* rcu_sched self-detected stall on CPU
@ 2016-09-15 4:02 NTU
2016-09-15 6:22 ` Mike Galbraith
0 siblings, 1 reply; 50+ messages in thread
From: NTU @ 2016-09-15 4:02 UTC (permalink / raw)
To: linux-kernel
[-- Attachment #1: Type: text/plain, Size: 656 bytes --]
Hello,
I've been testing out KASAN and experimenting with some other new
config settings related to security and kernel hardening, I ran into a
problem though and I've attached a snippet of my kernel log of the
stack trace as well as my kernel config. Also intermittently (every
few seconds just about) my system freezes for a short moment and
resumes, no errors pop up though in dmesg. My mouse just stops working
and the system is basically very choppy and sluggish, most likely
related to KASAN from the looks of it. I'm running a 4.2 GHz quad core
APU, if you need any more info let me know! (Kernel image is nearly
9MB with XZ compression!)
Thanks!
[-- Attachment #2: dmesg_trace.txt --]
[-- Type: text/plain, Size: 7593 bytes --]
[ 26.541937] INFO: rcu_sched self-detected stall on CPU
[ 26.542948] INFO: rcu_sched detected stalls on CPUs/tasks:
[ 26.542959] 3-...: (20987 ticks this GP) idle=2ef/140000000000001/0 softirq=182/182 fqs=5168
[ 26.542962] (detected by 1, t=21002 jiffies, g=-222, c=-223, q=14)
[ 26.542964] Task dump for CPU 3:
[ 26.542968] swapper/0 R running task 0 1 0 0x00000008
[ 26.542973] 0000000000000003 ffff8803a4bef228 0000000000015120 ffff8803a4be6400
[ 26.542976] ffffffffa900e5a0 0000000000000297 0000000000000000 0000000000000297
[ 26.542979] ffff88039d950c00 000000000006e660 ffff8803a4bef220 0000000000000297
[ 26.542980] Call Trace:
[ 26.542983] [<ffffffffa7fbd7c1>] ? 0xffffffffa7fbd7c1
[ 26.542985] [<ffffffffa7f17d35>] ? 0xffffffffa7f17d35
[ 26.542986] [<ffffffffa796c115>] ? 0xffffffffa796c115
[ 26.542988] [<ffffffffa7633d86>] ? 0xffffffffa7633d86
[ 26.542989] [<ffffffffa796c0a6>] ? 0xffffffffa796c0a6
[ 26.542991] [<ffffffffa796c761>] ? 0xffffffffa796c761
[ 26.542992] [<ffffffffa796a5d0>] ? 0xffffffffa796a5d0
[ 26.542993] [<ffffffffa7f17d35>] ? 0xffffffffa7f17d35
[ 26.542995] [<ffffffffa7657aee>] ? 0xffffffffa7657aee
[ 26.542996] [<ffffffffa77d2daf>] ? 0xffffffffa77d2daf
[ 26.542997] [<ffffffffa77d3241>] ? 0xffffffffa77d3241
[ 26.542999] [<ffffffffa768e427>] ? 0xffffffffa768e427
[ 26.543000] [<ffffffffa7680b62>] ? 0xffffffffa7680b62
[ 26.543002] [<ffffffffa7681d05>] ? 0xffffffffa7681d05
[ 26.543003] [<ffffffffa7682d36>] ? 0xffffffffa7682d36
[ 26.543004] [<ffffffffa76859e4>] ? 0xffffffffa76859e4
[ 26.543006] [<ffffffffa7677352>] ? 0xffffffffa7677352
[ 26.543007] [<ffffffffa767886a>] ? 0xffffffffa767886a
[ 26.543009] [<ffffffffa8e68a94>] ? 0xffffffffa8e68a94
[ 26.543010] [<ffffffffa8e7998f>] ? 0xffffffffa8e7998f
[ 26.543011] [<ffffffffa7967d0a>] ? 0xffffffffa7967d0a
[ 26.543013] [<ffffffffa7968cee>] ? 0xffffffffa7968cee
[ 26.543014] [<ffffffffa7f17bfe>] ? 0xffffffffa7f17bfe
[ 26.543016] [<ffffffffa796c1b6>] ? 0xffffffffa796c1b6
[ 26.543017] [<ffffffffa796c1b6>] ? 0xffffffffa796c1b6
[ 26.543018] [<ffffffffa7f47d98>] ? 0xffffffffa7f47d98
[ 26.543020] [<ffffffffa796c777>] ? 0xffffffffa796c777
[ 26.543021] [<ffffffffa796a5d0>] ? 0xffffffffa796a5d0
[ 26.543023] [<ffffffffa7f17d35>] ? 0xffffffffa7f17d35
[ 26.543024] [<ffffffffa7657aee>] ? 0xffffffffa7657aee
[ 26.543026] [<ffffffffa7657950>] ? 0xffffffffa7657950
[ 26.543027] [<ffffffffa7f57519>] ? 0xffffffffa7f57519
[ 26.543028] [<ffffffffa7f57577>] ? 0xffffffffa7f57577
[ 26.543030] [<ffffffffa77d2928>] ? 0xffffffffa77d2928
[ 26.543031] [<ffffffffa768d320>] ? 0xffffffffa768d320
[ 26.543033] [<ffffffffa767fccd>] ? 0xffffffffa767fccd
[ 26.543034] [<ffffffffa767fccd>] ? 0xffffffffa767fccd
[ 26.543035] [<ffffffffa7680ee7>] ? 0xffffffffa7680ee7
[ 26.543037] [<ffffffffa76806c0>] ? 0xffffffffa76806c0
[ 26.543038] [<ffffffffa8078048>] ? 0xffffffffa8078048
[ 26.543040] [<ffffffffa7620446>] ? 0xffffffffa7620446
[ 26.543041] [<ffffffffa7620446>] ? 0xffffffffa7620446
[ 26.543043] [<ffffffffa7fbd7c1>] ? 0xffffffffa7fbd7c1
[ 26.543044] [<ffffffffa7f17d35>] ? 0xffffffffa7f17d35
[ 26.543046] [<ffffffffa796c115>] ? 0xffffffffa796c115
[ 26.543047] [<ffffffffa7633d86>] ? 0xffffffffa7633d86
[ 26.543048] [<ffffffffa796c0a6>] ? 0xffffffffa796c0a6
[ 26.543050] [<ffffffffa796c761>] ? 0xffffffffa796c761
[ 26.543051] [<ffffffffa796a5d0>] ? 0xffffffffa796a5d0
[ 26.543052] [<ffffffffa7f17d35>] ? 0xffffffffa7f17d35
[ 26.543054] [<ffffffffa7657aee>] ? 0xffffffffa7657aee
[ 26.543055] [<ffffffffa77d2daf>] ? 0xffffffffa77d2daf
[ 26.543057] [<ffffffffa77d3241>] ? 0xffffffffa77d3241
[ 26.543058] [<ffffffffa7683199>] ? 0xffffffffa7683199
[ 26.543059] [<ffffffffa76859e4>] ? 0xffffffffa76859e4
[ 26.543061] [<ffffffffa7677352>] ? 0xffffffffa7677352
[ 26.543062] [<ffffffffa767886a>] ? 0xffffffffa767886a
[ 26.543063] [<ffffffffa8e68a94>] ? 0xffffffffa8e68a94
[ 26.543065] [<ffffffffa8e7998f>] ? 0xffffffffa8e7998f
[ 26.543066] [<ffffffffa79687af>] ? 0xffffffffa79687af
[ 26.543068] [<ffffffffa7967d0a>] ? 0xffffffffa7967d0a
[ 26.543069] [<ffffffffa7968cee>] ? 0xffffffffa7968cee
[ 26.543071] [<ffffffffa7f17bfe>] ? 0xffffffffa7f17bfe
[ 26.543072] [<ffffffffa796c1b6>] ? 0xffffffffa796c1b6
[ 26.543073] [<ffffffffa796c1b6>] ? 0xffffffffa796c1b6
[ 26.543075] [<ffffffffa7f47d98>] ? 0xffffffffa7f47d98
[ 26.543076] [<ffffffffa796c777>] ? 0xffffffffa796c777
[ 26.543078] [<ffffffffa796a5d0>] ? 0xffffffffa796a5d0
[ 26.543079] [<ffffffffa7f17d35>] ? 0xffffffffa7f17d35
[ 26.543080] [<ffffffffa7657aee>] ? 0xffffffffa7657aee
[ 26.543082] [<ffffffffa7657950>] ? 0xffffffffa7657950
[ 26.543083] [<ffffffffa7f57519>] ? 0xffffffffa7f57519
[ 26.543085] [<ffffffffa7f57577>] ? 0xffffffffa7f57577
[ 26.543086] [<ffffffffa77d2928>] ? 0xffffffffa77d2928
[ 26.543088] [<ffffffffa76928d6>] ? 0xffffffffa76928d6
[ 26.543089] [<ffffffffa769198f>] ? 0xffffffffa769198f
[ 26.543090] [<ffffffffa76935b9>] ? 0xffffffffa76935b9
[ 26.543092] [<ffffffffa7693110>] ? 0xffffffffa7693110
[ 26.543093] [<ffffffffa76859e4>] ? 0xffffffffa76859e4
[ 26.543095] [<ffffffffa7693867>] ? 0xffffffffa7693867
[ 26.543096] [<ffffffffa767886f>] ? 0xffffffffa767886f
[ 26.543098] [<ffffffffa8e68a94>] ? 0xffffffffa8e68a94
[ 26.543099] [<ffffffffa8e7998f>] ? 0xffffffffa8e7998f
[ 26.543101] [<ffffffffa8e68a60>] ? 0xffffffffa8e68a60
[ 26.757288] 3-...: (20987 ticks this GP) idle=2ef/140000000000001/0 softirq=182/182 fqs=5221
[ 26.758231] (t=21217 jiffies g=-222 c=-223 q=14)
[ 26.759200] Task dump for CPU 3:
[ 26.760162] swapper/0 R running task 0 1 0 0x00000008
[ 26.761198] ffffffffa9662f20 000000002fea3a50 ffff8803acf87c98 ffffffffa770d396
[ 26.762288] 0000000000000006 0000000000000010 0000000041b58ab3 ffffffffa94133d8
[ 26.763404] ffffffffa770d170 ffff8803acf87d30 ffffffffa7f57519 0000000000000008
[ 26.764568] Call Trace:
[ 26.765720] <IRQ> [<ffffffffa770d396>] 0xffffffffa770d396
[ 26.766934] [<ffffffffa770d170>] ? 0xffffffffa770d170
[ 26.768166] [<ffffffffa7f57519>] ? 0xffffffffa7f57519
[ 26.769397] [<ffffffffa7714ec1>] 0xffffffffa7714ec1
[ 26.770633] [<ffffffffa8e5e395>] 0xffffffffa8e5e395
[ 26.771876] [<ffffffffa7794356>] 0xffffffffa7794356
[ 26.773122] [<ffffffffa78242af>] ? 0xffffffffa78242af
[ 26.774380] [<ffffffffa779e4a0>] 0xffffffffa779e4a0
[ 26.775645] [<ffffffffa77c8253>] 0xffffffffa77c8253
[ 26.776907] [<ffffffffa779eb93>] ? 0xffffffffa779eb93
[ 26.778180] [<ffffffffa77c81a0>] ? 0xffffffffa77c81a0
[ 26.779460] [<ffffffffa779f30e>] 0xffffffffa779f30e
[ 26.780747] [<ffffffffa77a0fbc>] 0xffffffffa77a0fbc
[ 26.782037] [<ffffffffa8e7b26f>] 0xffffffffa8e7b26f
[ 26.783326] [<ffffffffa8e7b2d9>] 0xffffffffa8e7b2d9
[ 26.784608] [<ffffffffa8e7ab1c>] 0xffffffffa8e7ab1c
[ 26.785896] <EOI> [<ffffffffa76928d6>] ? 0xffffffffa76928d6
[ 26.787228] [<ffffffffa769198f>] ? 0xffffffffa769198f
[ 26.788572] [<ffffffffa76935b9>] 0xffffffffa76935b9
[ 26.789916] [<ffffffffa7693110>] ? 0xffffffffa7693110
[ 26.791268] [<ffffffffa76859e4>] ? 0xffffffffa76859e4
[ 26.792625] [<ffffffffa7693867>] 0xffffffffa7693867
[ 26.793991] [<ffffffffa767886f>] 0xffffffffa767886f
[ 26.795355] [<ffffffffa8e68a94>] 0xffffffffa8e68a94
[ 26.796720] [<ffffffffa8e7998f>] 0xffffffffa8e7998f
[ 26.798086] [<ffffffffa8e68a60>] ? 0xffffffffa8e68a60
[-- Attachment #3: .config --]
[-- Type: application/octet-stream, Size: 84697 bytes --]
#
# Automatically generated file; DO NOT EDIT.
# Linux/x86 4.8.0-rc6 Kernel Configuration
#
CONFIG_64BIT=y
CONFIG_X86_64=y
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_OUTPUT_FORMAT="elf64-x86-64"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/x86_64_defconfig"
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MIN=28
CONFIG_ARCH_MMAP_RND_BITS_MAX=32
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_ZONE_DMA32=y
CONFIG_AUDIT_ARCH=y
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_KASAN_SHADOW_OFFSET=0xdffffc0000000000
CONFIG_X86_64_SMP=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_DEBUG_RODATA=y
CONFIG_PGTABLE_LEVELS=4
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_CONSTRUCTORS=y
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_EXTABLE_SORT=y
#
# General setup
#
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_CROSS_COMPILE=""
# CONFIG_COMPILE_TEST is not set
CONFIG_LOCALVERSION="-HUGESEC"
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
# CONFIG_KERNEL_GZIP is not set
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_LZMA is not set
CONFIG_KERNEL_XZ=y
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_POSIX_MQUEUE_SYSCTL=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
# CONFIG_FHANDLE is not set
# CONFIG_USELIB is not set
CONFIG_AUDIT=y
CONFIG_HAVE_ARCH_AUDITSYSCALL=y
CONFIG_AUDITSYSCALL=y
CONFIG_AUDIT_WATCH=y
CONFIG_AUDIT_TREE=y
#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_DOMAIN_HIERARCHY=y
CONFIG_GENERIC_MSI_IRQ=y
CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
# CONFIG_IRQ_DOMAIN_DEBUG is not set
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_ARCH_CLOCKSOURCE_DATA=y
CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
CONFIG_GENERIC_CMOS_UPDATE=y
#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_HZ_PERIODIC=y
# CONFIG_NO_HZ_IDLE is not set
# CONFIG_NO_HZ_FULL is not set
# CONFIG_NO_HZ is not set
CONFIG_HIGH_RES_TIMERS=y
#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
# CONFIG_IRQ_TIME_ACCOUNTING is not set
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
#
# RCU Subsystem
#
CONFIG_TREE_RCU=y
# CONFIG_RCU_EXPERT is not set
CONFIG_SRCU=y
# CONFIG_TASKS_RCU is not set
CONFIG_RCU_STALL_COMMON=y
CONFIG_TREE_RCU_TRACE=y
# CONFIG_RCU_EXPEDITE_BOOT is not set
CONFIG_BUILD_BIN2C=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=17
CONFIG_LOG_CPU_MAX_BUF_SHIFT=15
CONFIG_NMI_LOG_BUF_SHIFT=13
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
CONFIG_ARCH_SUPPORTS_INT128=y
CONFIG_CGROUPS=y
# CONFIG_MEMCG is not set
# CONFIG_BLK_CGROUP is not set
CONFIG_CGROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
# CONFIG_CFS_BANDWIDTH is not set
# CONFIG_RT_GROUP_SCHED is not set
# CONFIG_CGROUP_PIDS is not set
# CONFIG_CGROUP_FREEZER is not set
# CONFIG_CGROUP_HUGETLB is not set
# CONFIG_CPUSETS is not set
# CONFIG_CGROUP_DEVICE is not set
# CONFIG_CGROUP_CPUACCT is not set
# CONFIG_CGROUP_PERF is not set
# CONFIG_CGROUP_DEBUG is not set
# CONFIG_CHECKPOINT_RESTORE is not set
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
# CONFIG_USER_NS is not set
CONFIG_PID_NS=y
CONFIG_NET_NS=y
CONFIG_SCHED_AUTOGROUP=y
# CONFIG_SYSFS_DEPRECATED is not set
# CONFIG_RELAY is not set
# CONFIG_BLK_DEV_INITRD is not set
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_SYSCTL=y
CONFIG_ANON_INODES=y
CONFIG_SYSCTL_EXCEPTION_TRACE=y
CONFIG_HAVE_PCSPKR_PLATFORM=y
CONFIG_BPF=y
CONFIG_EXPERT=y
CONFIG_MULTIUSER=y
# CONFIG_SGETMASK_SYSCALL is not set
CONFIG_SYSFS_SYSCALL=y
# CONFIG_SYSCTL_SYSCALL is not set
# CONFIG_KALLSYMS is not set
CONFIG_PRINTK=y
CONFIG_PRINTK_NMI=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
# CONFIG_PCSPKR_PLATFORM is not set
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
# CONFIG_BPF_SYSCALL is not set
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_ADVISE_SYSCALLS=y
CONFIG_USERFAULTFD=y
CONFIG_PCI_QUIRKS=y
# CONFIG_MEMBARRIER is not set
CONFIG_EMBEDDED=y
CONFIG_HAVE_PERF_EVENTS=y
#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLUB_DEBUG=y
# CONFIG_COMPAT_BRK is not set
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
CONFIG_SLAB_FREELIST_RANDOM=y
CONFIG_SLUB_CPU_PARTIAL=y
# CONFIG_SYSTEM_DATA_VERIFICATION is not set
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
# CONFIG_OPROFILE_EVENT_MULTIPLEX is not set
CONFIG_HAVE_OPROFILE=y
CONFIG_OPROFILE_NMI_TIMER=y
CONFIG_JUMP_LABEL=y
CONFIG_STATIC_KEYS_SELFTEST=y
# CONFIG_UPROBES is not set
# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_KPROBES_ON_FTRACE=y
CONFIG_HAVE_NMI=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y
CONFIG_HAVE_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_PERF_EVENTS_NMI=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
CONFIG_HAVE_CMPXCHG_LOCAL=y
CONFIG_HAVE_CMPXCHG_DOUBLE=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_SECCOMP_FILTER=y
CONFIG_HAVE_GCC_PLUGINS=y
CONFIG_GCC_PLUGINS=y
CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=y
CONFIG_GCC_PLUGIN_SANCOV=y
CONFIG_HAVE_CC_STACKPROTECTOR=y
CONFIG_CC_STACKPROTECTOR=y
# CONFIG_CC_STACKPROTECTOR_NONE is not set
# CONFIG_CC_STACKPROTECTOR_REGULAR is not set
CONFIG_CC_STACKPROTECTOR_STRONG=y
CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES=y
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_HAVE_ARCH_HUGE_VMAP=y
CONFIG_HAVE_ARCH_SOFT_DIRTY=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_HAVE_EXIT_THREAD=y
CONFIG_ARCH_MMAP_RND_BITS=32
CONFIG_HAVE_COPY_THREAD_TLS=y
CONFIG_HAVE_STACK_VALIDATION=y
# CONFIG_HAVE_ARCH_HASH is not set
CONFIG_ISA_BUS_API=y
# CONFIG_CPU_NO_EFFICIENT_FFS is not set
#
# GCOV-based kernel profiling
#
# CONFIG_GCOV_KERNEL is not set
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
# CONFIG_MODULES is not set
CONFIG_MODULES_TREE_LOOKUP=y
CONFIG_BLOCK=y
CONFIG_BLK_DEV_BSG=y
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
# CONFIG_BLK_CMDLINE_PARSER is not set
#
# Partition Types
#
CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION is not set
# CONFIG_AIX_PARTITION is not set
# CONFIG_OSF_PARTITION is not set
# CONFIG_AMIGA_PARTITION is not set
# CONFIG_ATARI_PARTITION is not set
# CONFIG_MAC_PARTITION is not set
CONFIG_MSDOS_PARTITION=y
# CONFIG_BSD_DISKLABEL is not set
# CONFIG_MINIX_SUBPARTITION is not set
# CONFIG_SOLARIS_X86_PARTITION is not set
# CONFIG_UNIXWARE_DISKLABEL is not set
# CONFIG_LDM_PARTITION is not set
# CONFIG_SGI_PARTITION is not set
# CONFIG_ULTRIX_PARTITION is not set
# CONFIG_SUN_PARTITION is not set
# CONFIG_KARMA_PARTITION is not set
CONFIG_EFI_PARTITION=y
# CONFIG_SYSV68_PARTITION is not set
# CONFIG_CMDLINE_PARTITION is not set
#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_DEADLINE=y
# CONFIG_IOSCHED_CFQ is not set
CONFIG_DEFAULT_DEADLINE=y
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="deadline"
CONFIG_PADATA=y
CONFIG_ASN1=y
CONFIG_UNINLINE_SPIN_UNLOCK=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_RWSEM_SPIN_ON_OWNER=y
CONFIG_LOCK_SPIN_ON_OWNER=y
CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_QUEUED_SPINLOCKS=y
CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
CONFIG_QUEUED_RWLOCKS=y
# CONFIG_FREEZER is not set
#
# Processor type and features
#
CONFIG_ZONE_DMA=y
CONFIG_SMP=y
CONFIG_X86_FEATURE_NAMES=y
CONFIG_X86_FAST_FEATURE_TESTS=y
CONFIG_X86_X2APIC=y
# CONFIG_X86_MPPARSE is not set
# CONFIG_GOLDFISH is not set
# CONFIG_X86_EXTENDED_PLATFORM is not set
# CONFIG_X86_INTEL_LPSS is not set
CONFIG_X86_AMD_PLATFORM_DEVICE=y
# CONFIG_IOSF_MBI is not set
CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y
CONFIG_SCHED_OMIT_FRAME_POINTER=y
# CONFIG_HYPERVISOR_GUEST is not set
CONFIG_NO_BOOTMEM=y
# CONFIG_MK8 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
CONFIG_GENERIC_CPU=y
CONFIG_X86_INTERNODE_CACHE_SHIFT=6
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=64
CONFIG_X86_DEBUGCTLMSR=y
CONFIG_PROCESSOR_SELECT=y
# CONFIG_CPU_SUP_INTEL is not set
CONFIG_CPU_SUP_AMD=y
# CONFIG_CPU_SUP_CENTAUR is not set
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_DMI=y
# CONFIG_GART_IOMMU is not set
# CONFIG_CALGARY_IOMMU is not set
CONFIG_SWIOTLB=y
CONFIG_IOMMU_HELPER=y
# CONFIG_MAXSMP is not set
CONFIG_NR_CPUS=4
# CONFIG_SCHED_SMT is not set
# CONFIG_SCHED_MC is not set
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
# CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS is not set
CONFIG_X86_MCE=y
# CONFIG_X86_MCE_INTEL is not set
CONFIG_X86_MCE_AMD=y
CONFIG_X86_MCE_THRESHOLD=y
# CONFIG_X86_MCE_INJECT is not set
#
# Performance monitoring
#
# CONFIG_PERF_EVENTS_AMD_POWER is not set
# CONFIG_VM86 is not set
CONFIG_X86_VSYSCALL_EMULATION=y
# CONFIG_I8K is not set
CONFIG_MICROCODE=y
# CONFIG_MICROCODE_INTEL is not set
CONFIG_MICROCODE_AMD=y
CONFIG_MICROCODE_OLD_INTERFACE=y
CONFIG_X86_MSR=y
CONFIG_X86_CPUID=y
CONFIG_ARCH_PHYS_ADDR_T_64BIT=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
# CONFIG_NUMA is not set
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_DEFAULT=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ARCH_PROC_KCORE_TEXT=y
CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_HAVE_MEMORY_PRESENT=y
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_SPARSEMEM_ALLOC_MEM_MAP_TOGETHER=y
CONFIG_SPARSEMEM_VMEMMAP=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
CONFIG_ARCH_DISCARD_MEMBLOCK=y
CONFIG_MEMORY_ISOLATION=y
# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
CONFIG_COMPACTION=y
CONFIG_MIGRATION=y
CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y
CONFIG_PHYS_ADDR_T_64BIT=y
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_MMU_NOTIFIER=y
CONFIG_KSM=y
CONFIG_DEFAULT_MMAP_MIN_ADDR=65536
CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y
CONFIG_MEMORY_FAILURE=y
CONFIG_HWPOISON_INJECT=y
CONFIG_TRANSPARENT_HUGEPAGE=y
# CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS is not set
CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y
CONFIG_TRANSPARENT_HUGE_PAGECACHE=y
CONFIG_CLEANCACHE=y
CONFIG_FRONTSWAP=y
# CONFIG_CMA is not set
CONFIG_ZSWAP=y
CONFIG_ZPOOL=y
CONFIG_ZBUD=y
CONFIG_Z3FOLD=y
CONFIG_ZSMALLOC=y
# CONFIG_PGTABLE_MAPPING is not set
CONFIG_ZSMALLOC_STAT=y
CONFIG_GENERIC_EARLY_IOREMAP=y
CONFIG_ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT=y
CONFIG_IDLE_PAGE_TRACKING=y
# CONFIG_X86_PMEM_LEGACY is not set
CONFIG_X86_CHECK_BIOS_CORRUPTION=y
CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK=y
CONFIG_X86_RESERVE_LOW=64
CONFIG_MTRR=y
CONFIG_MTRR_SANITIZER=y
CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=1
CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
CONFIG_X86_PAT=y
CONFIG_ARCH_USES_PG_UNCACHED=y
# CONFIG_ARCH_RANDOM is not set
# CONFIG_X86_SMAP is not set
# CONFIG_EFI is not set
CONFIG_SECCOMP=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
CONFIG_HZ_1000=y
CONFIG_HZ=1000
CONFIG_SCHED_HRTICK=y
# CONFIG_KEXEC is not set
# CONFIG_KEXEC_FILE is not set
# CONFIG_CRASH_DUMP is not set
CONFIG_PHYSICAL_START=0x1000000
CONFIG_RELOCATABLE=y
CONFIG_RANDOMIZE_BASE=y
CONFIG_X86_NEED_RELOCS=y
CONFIG_PHYSICAL_ALIGN=0x200000
CONFIG_RANDOMIZE_MEMORY=y
CONFIG_RANDOMIZE_MEMORY_PHYSICAL_PADDING=0x0
# CONFIG_HOTPLUG_CPU is not set
# CONFIG_LEGACY_VSYSCALL_NATIVE is not set
# CONFIG_LEGACY_VSYSCALL_EMULATE is not set
CONFIG_LEGACY_VSYSCALL_NONE=y
# CONFIG_CMDLINE_BOOL is not set
# CONFIG_MODIFY_LDT_SYSCALL is not set
CONFIG_HAVE_LIVEPATCH=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
#
# Power management and ACPI options
#
# CONFIG_SUSPEND is not set
# CONFIG_HIBERNATION is not set
# CONFIG_PM is not set
CONFIG_ACPI=y
CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y
CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y
CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
# CONFIG_ACPI_DEBUGGER is not set
# CONFIG_ACPI_PROCFS_POWER is not set
CONFIG_ACPI_REV_OVERRIDE_POSSIBLE=y
# CONFIG_ACPI_EC_DEBUGFS is not set
# CONFIG_ACPI_AC is not set
# CONFIG_ACPI_BATTERY is not set
CONFIG_ACPI_BUTTON=y
# CONFIG_ACPI_VIDEO is not set
# CONFIG_ACPI_DOCK is not set
CONFIG_ACPI_PROCESSOR_CSTATE=y
# CONFIG_ACPI_PROCESSOR is not set
# CONFIG_ACPI_CUSTOM_DSDT is not set
CONFIG_ARCH_HAS_ACPI_TABLE_UPGRADE=y
CONFIG_ACPI_DEBUG=y
CONFIG_ACPI_PCI_SLOT=y
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_CONTAINER=y
CONFIG_ACPI_HOTPLUG_IOAPIC=y
# CONFIG_ACPI_SBS is not set
CONFIG_ACPI_HED=y
# CONFIG_ACPI_CUSTOM_METHOD is not set
# CONFIG_ACPI_REDUCED_HARDWARE_ONLY is not set
# CONFIG_ACPI_NFIT is not set
CONFIG_HAVE_ACPI_APEI=y
CONFIG_HAVE_ACPI_APEI_NMI=y
# CONFIG_ACPI_APEI is not set
# CONFIG_DPTF_POWER is not set
CONFIG_ACPI_EXTLOG=y
# CONFIG_PMIC_OPREGION is not set
# CONFIG_ACPI_CONFIGFS is not set
# CONFIG_SFI is not set
#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
#
# CPU Idle
#
# CONFIG_CPU_IDLE is not set
# CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is not set
#
# Memory power savings
#
# CONFIG_I7300_IDLE is not set
#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_PCI_DOMAINS=y
# CONFIG_PCI_CNB20LE_QUIRK is not set
CONFIG_PCIEPORTBUS=y
CONFIG_PCIEAER=y
CONFIG_PCIE_ECRC=y
# CONFIG_PCIEAER_INJECT is not set
CONFIG_PCIEASPM=y
CONFIG_PCIEASPM_DEBUG=y
CONFIG_PCIEASPM_DEFAULT=y
# CONFIG_PCIEASPM_POWERSAVE is not set
# CONFIG_PCIEASPM_PERFORMANCE is not set
CONFIG_PCIE_DPC=y
CONFIG_PCI_BUS_ADDR_T_64BIT=y
CONFIG_PCI_MSI=y
CONFIG_PCI_MSI_IRQ_DOMAIN=y
CONFIG_PCI_DEBUG=y
CONFIG_PCI_REALLOC_ENABLE_AUTO=y
# CONFIG_PCI_STUB is not set
CONFIG_HT_IRQ=y
CONFIG_PCI_ATS=y
CONFIG_PCI_IOV=y
CONFIG_PCI_PRI=y
CONFIG_PCI_PASID=y
CONFIG_PCI_LABEL=y
# CONFIG_HOTPLUG_PCI is not set
#
# PCI host controller drivers
#
# CONFIG_PCIE_DW_PLAT is not set
CONFIG_ISA_BUS=y
CONFIG_ISA_DMA_API=y
CONFIG_AMD_NB=y
# CONFIG_PCCARD is not set
# CONFIG_RAPIDIO is not set
CONFIG_X86_SYSFB=y
#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
CONFIG_ELFCORE=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_BINFMT_SCRIPT=y
# CONFIG_HAVE_AOUT is not set
CONFIG_BINFMT_MISC=y
CONFIG_COREDUMP=y
# CONFIG_IA32_EMULATION is not set
# CONFIG_X86_X32 is not set
CONFIG_X86_DEV_DMA_OPS=y
CONFIG_PMC_ATOM=y
# CONFIG_VMD is not set
CONFIG_NET=y
CONFIG_NET_INGRESS=y
#
# Networking options
#
CONFIG_PACKET=y
CONFIG_PACKET_DIAG=y
CONFIG_UNIX=y
CONFIG_UNIX_DIAG=y
CONFIG_XFRM=y
CONFIG_XFRM_ALGO=y
CONFIG_XFRM_USER=y
# CONFIG_XFRM_SUB_POLICY is not set
# CONFIG_XFRM_MIGRATE is not set
# CONFIG_XFRM_STATISTICS is not set
CONFIG_XFRM_IPCOMP=y
CONFIG_NET_KEY=y
# CONFIG_NET_KEY_MIGRATE is not set
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE_DEMUX is not set
# CONFIG_NET_IP_TUNNEL is not set
# CONFIG_SYN_COOKIES is not set
# CONFIG_NET_IPVTI is not set
# CONFIG_NET_UDP_TUNNEL is not set
# CONFIG_NET_FOU is not set
CONFIG_INET_AH=y
CONFIG_INET_ESP=y
CONFIG_INET_IPCOMP=y
CONFIG_INET_XFRM_TUNNEL=y
CONFIG_INET_TUNNEL=y
CONFIG_INET_XFRM_MODE_TRANSPORT=y
CONFIG_INET_XFRM_MODE_TUNNEL=y
CONFIG_INET_XFRM_MODE_BEET=y
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
CONFIG_INET_UDP_DIAG=y
# CONFIG_INET_DIAG_DESTROY is not set
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
# CONFIG_IPV6 is not set
# CONFIG_NETLABEL is not set
CONFIG_NETWORK_SECMARK=y
# CONFIG_NET_PTP_CLASSIFY is not set
# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not set
# CONFIG_NETFILTER_ADVANCED is not set
#
# Core Netfilter Configuration
#
CONFIG_NETFILTER_INGRESS=y
CONFIG_NETFILTER_NETLINK=y
CONFIG_NETFILTER_NETLINK_LOG=y
CONFIG_NF_CONNTRACK=y
CONFIG_NF_LOG_COMMON=y
CONFIG_NF_CONNTRACK_SECMARK=y
CONFIG_NF_CONNTRACK_PROCFS=y
# CONFIG_NF_CONNTRACK_FTP is not set
# CONFIG_NF_CONNTRACK_IRC is not set
# CONFIG_NF_CONNTRACK_NETBIOS_NS is not set
# CONFIG_NF_CONNTRACK_SIP is not set
CONFIG_NF_CT_NETLINK=y
CONFIG_NETFILTER_NETLINK_GLUE_CT=y
CONFIG_NF_NAT=y
CONFIG_NF_NAT_NEEDED=y
# CONFIG_NF_NAT_AMANDA is not set
# CONFIG_NF_NAT_FTP is not set
# CONFIG_NF_NAT_IRC is not set
# CONFIG_NF_NAT_SIP is not set
# CONFIG_NF_NAT_TFTP is not set
CONFIG_NF_NAT_REDIRECT=y
# CONFIG_NF_TABLES is not set
CONFIG_NETFILTER_XTABLES=y
#
# Xtables combined modules
#
CONFIG_NETFILTER_XT_MARK=y
#
# Xtables targets
#
CONFIG_NETFILTER_XT_TARGET_CONNSECMARK=y
CONFIG_NETFILTER_XT_TARGET_LOG=y
CONFIG_NETFILTER_XT_NAT=y
CONFIG_NETFILTER_XT_TARGET_NETMAP=y
CONFIG_NETFILTER_XT_TARGET_NFLOG=y
CONFIG_NETFILTER_XT_TARGET_REDIRECT=y
CONFIG_NETFILTER_XT_TARGET_SECMARK=y
CONFIG_NETFILTER_XT_TARGET_TCPMSS=y
#
# Xtables matches
#
CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=y
CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y
CONFIG_NETFILTER_XT_MATCH_POLICY=y
CONFIG_NETFILTER_XT_MATCH_STATE=y
# CONFIG_IP_SET is not set
# CONFIG_IP_VS is not set
#
# IP: Netfilter Configuration
#
CONFIG_NF_DEFRAG_IPV4=y
CONFIG_NF_CONNTRACK_IPV4=y
CONFIG_NF_CONNTRACK_PROC_COMPAT=y
CONFIG_NF_DUP_IPV4=y
CONFIG_NF_LOG_ARP=y
CONFIG_NF_LOG_IPV4=y
CONFIG_NF_REJECT_IPV4=y
CONFIG_NF_NAT_IPV4=y
CONFIG_NF_NAT_MASQUERADE_IPV4=y
# CONFIG_NF_NAT_PPTP is not set
# CONFIG_NF_NAT_H323 is not set
CONFIG_IP_NF_IPTABLES=y
CONFIG_IP_NF_FILTER=y
CONFIG_IP_NF_TARGET_REJECT=y
CONFIG_IP_NF_NAT=y
CONFIG_IP_NF_TARGET_MASQUERADE=y
CONFIG_IP_NF_MANGLE=y
CONFIG_IP_NF_RAW=y
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_L2TP is not set
# CONFIG_BRIDGE is not set
CONFIG_HAVE_NET_DSA=y
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_IEEE802154 is not set
# CONFIG_NET_SCHED is not set
# CONFIG_DCB is not set
# CONFIG_DNS_RESOLVER is not set
# CONFIG_BATMAN_ADV is not set
# CONFIG_OPENVSWITCH is not set
# CONFIG_VSOCKETS is not set
CONFIG_NETLINK_DIAG=y
# CONFIG_MPLS is not set
# CONFIG_HSR is not set
# CONFIG_NET_SWITCHDEV is not set
# CONFIG_NET_L3_MASTER_DEV is not set
# CONFIG_NET_NCSI is not set
CONFIG_RPS=y
CONFIG_RFS_ACCEL=y
CONFIG_XPS=y
# CONFIG_SOCK_CGROUP_DATA is not set
# CONFIG_CGROUP_NET_PRIO is not set
# CONFIG_CGROUP_NET_CLASSID is not set
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y
CONFIG_NET_FLOW_LIMIT=y
#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
# CONFIG_AF_KCM is not set
# CONFIG_WIRELESS is not set
# CONFIG_WIMAX is not set
# CONFIG_RFKILL is not set
# CONFIG_NET_9P is not set
# CONFIG_CAIF is not set
# CONFIG_CEPH_LIB is not set
# CONFIG_NFC is not set
# CONFIG_LWTUNNEL is not set
# CONFIG_DST_CACHE is not set
# CONFIG_NET_DEVLINK is not set
CONFIG_MAY_USE_DEVLINK=y
CONFIG_HAVE_EBPF_JIT=y
#
# Device Drivers
#
#
# Generic Driver Options
#
# CONFIG_UEVENT_HELPER is not set
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
CONFIG_FIRMWARE_IN_KERNEL=y
CONFIG_EXTRA_FIRMWARE="radeon/hawaii_ce.bin radeon/hawaii_k_smc.bin radeon/hawaii_mc.bin radeon/hawaii_me.bin radeon/hawaii_mec.bin radeon/hawaii_pfp.bin radeon/hawaii_rlc.bin radeon/hawaii_sdma1.bin radeon/hawaii_sdma.bin radeon/hawaii_smc.bin radeon/hawaii_uvd.bin radeon/hawaii_vce.bin rtl_nic/rtl8168f-1.fw"
CONFIG_EXTRA_FIRMWARE_DIR="/lib/firmware"
# CONFIG_FW_LOADER_USER_HELPER_FALLBACK is not set
CONFIG_ALLOW_DEV_COREDUMP=y
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_SYS_HYPERVISOR is not set
# CONFIG_GENERIC_CPU_DEVICES is not set
CONFIG_GENERIC_CPU_AUTOPROBE=y
CONFIG_REGMAP=y
CONFIG_REGMAP_I2C=y
CONFIG_DMA_SHARED_BUFFER=y
# CONFIG_FENCE_TRACE is not set
#
# Bus devices
#
CONFIG_CONNECTOR=y
CONFIG_PROC_EVENTS=y
# CONFIG_MTD is not set
# CONFIG_OF is not set
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
# CONFIG_PARPORT is not set
CONFIG_PNP=y
CONFIG_PNP_DEBUG_MESSAGES=y
#
# Protocols
#
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_NULL_BLK is not set
# CONFIG_BLK_DEV_FD is not set
# CONFIG_BLK_DEV_PCIESSD_MTIP32XX is not set
CONFIG_ZRAM=y
# CONFIG_BLK_CPQ_CISS_DA is not set
# CONFIG_BLK_DEV_DAC960 is not set
# CONFIG_BLK_DEV_UMEM is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
# CONFIG_BLK_DEV_CRYPTOLOOP is not set
# CONFIG_BLK_DEV_DRBD is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SKD is not set
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_BLK_DEV_HD is not set
# CONFIG_BLK_DEV_RBD is not set
# CONFIG_BLK_DEV_RSXX is not set
# CONFIG_BLK_DEV_NVME is not set
# CONFIG_NVME_TARGET is not set
#
# Misc devices
#
# CONFIG_SENSORS_LIS3LV02D is not set
# CONFIG_AD525X_DPOT is not set
# CONFIG_DUMMY_IRQ is not set
# CONFIG_IBM_ASM is not set
# CONFIG_PHANTOM is not set
# CONFIG_SGI_IOC4 is not set
# CONFIG_TIFM_CORE is not set
# CONFIG_ICS932S401 is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_HP_ILO is not set
# CONFIG_APDS9802ALS is not set
# CONFIG_ISL29003 is not set
# CONFIG_ISL29020 is not set
# CONFIG_SENSORS_TSL2550 is not set
# CONFIG_SENSORS_BH1770 is not set
# CONFIG_SENSORS_APDS990X is not set
# CONFIG_HMC6352 is not set
# CONFIG_DS1682 is not set
# CONFIG_BMP085_I2C is not set
# CONFIG_USB_SWITCH_FSA9480 is not set
# CONFIG_SRAM is not set
# CONFIG_C2PORT is not set
#
# EEPROM support
#
# CONFIG_EEPROM_AT24 is not set
# CONFIG_EEPROM_LEGACY is not set
# CONFIG_EEPROM_MAX6875 is not set
# CONFIG_EEPROM_93CX6 is not set
# CONFIG_CB710_CORE is not set
#
# Texas Instruments shared transport line discipline
#
# CONFIG_SENSORS_LIS3_I2C is not set
#
# Altera FPGA firmware download module
#
# CONFIG_ALTERA_STAPL is not set
# CONFIG_INTEL_MEI is not set
# CONFIG_INTEL_MEI_ME is not set
# CONFIG_INTEL_MEI_TXE is not set
# CONFIG_VMWARE_VMCI is not set
#
# Intel MIC Bus Driver
#
# CONFIG_INTEL_MIC_BUS is not set
#
# SCIF Bus Driver
#
# CONFIG_SCIF_BUS is not set
#
# VOP Bus Driver
#
# CONFIG_VOP_BUS is not set
#
# Intel MIC Host Driver
#
#
# Intel MIC Card Driver
#
#
# SCIF Driver
#
#
# Intel MIC Coprocessor State Management (COSM) Drivers
#
#
# VOP Driver
#
# CONFIG_GENWQE is not set
# CONFIG_ECHO is not set
# CONFIG_CXL_BASE is not set
# CONFIG_CXL_AFU_DRIVER_OPS is not set
CONFIG_HAVE_IDE=y
# CONFIG_IDE is not set
#
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
# CONFIG_SCSI_NETLINK is not set
CONFIG_SCSI_MQ_DEFAULT=y
# CONFIG_SCSI_PROC_FS is not set
#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=y
# CONFIG_CHR_DEV_ST is not set
# CONFIG_CHR_DEV_OSST is not set
CONFIG_BLK_DEV_SR=y
# CONFIG_BLK_DEV_SR_VENDOR is not set
# CONFIG_CHR_DEV_SG is not set
# CONFIG_CHR_DEV_SCH is not set
CONFIG_SCSI_CONSTANTS=y
# CONFIG_SCSI_LOGGING is not set
CONFIG_SCSI_SCAN_ASYNC=y
#
# SCSI Transports
#
CONFIG_SCSI_SPI_ATTRS=y
# CONFIG_SCSI_FC_ATTRS is not set
# CONFIG_SCSI_ISCSI_ATTRS is not set
# CONFIG_SCSI_SAS_ATTRS is not set
# CONFIG_SCSI_SAS_LIBSAS is not set
# CONFIG_SCSI_SRP_ATTRS is not set
# CONFIG_SCSI_LOWLEVEL is not set
# CONFIG_SCSI_DH is not set
# CONFIG_SCSI_OSD_INITIATOR is not set
CONFIG_ATA=y
# CONFIG_ATA_NONSTANDARD is not set
CONFIG_ATA_VERBOSE_ERROR=y
# CONFIG_ATA_ACPI is not set
# CONFIG_SATA_PMP is not set
#
# Controllers with non-SFF native interface
#
CONFIG_SATA_AHCI=y
# CONFIG_SATA_AHCI_PLATFORM is not set
# CONFIG_SATA_INIC162X is not set
# CONFIG_SATA_ACARD_AHCI is not set
# CONFIG_SATA_SIL24 is not set
CONFIG_ATA_SFF=y
#
# SFF controllers with custom DMA interface
#
# CONFIG_PDC_ADMA is not set
# CONFIG_SATA_QSTOR is not set
# CONFIG_SATA_SX4 is not set
CONFIG_ATA_BMDMA=y
#
# SATA SFF controllers with BMDMA
#
# CONFIG_ATA_PIIX is not set
# CONFIG_SATA_DWC is not set
# CONFIG_SATA_MV is not set
# CONFIG_SATA_NV is not set
# CONFIG_SATA_PROMISE is not set
# CONFIG_SATA_SIL is not set
# CONFIG_SATA_SIS is not set
# CONFIG_SATA_SVW is not set
# CONFIG_SATA_ULI is not set
# CONFIG_SATA_VIA is not set
# CONFIG_SATA_VITESSE is not set
#
# PATA SFF controllers with BMDMA
#
# CONFIG_PATA_ALI is not set
# CONFIG_PATA_AMD is not set
# CONFIG_PATA_ARTOP is not set
CONFIG_PATA_ATIIXP=y
# CONFIG_PATA_ATP867X is not set
# CONFIG_PATA_CMD64X is not set
# CONFIG_PATA_CYPRESS is not set
# CONFIG_PATA_EFAR is not set
# CONFIG_PATA_HPT366 is not set
# CONFIG_PATA_HPT37X is not set
# CONFIG_PATA_HPT3X2N is not set
# CONFIG_PATA_HPT3X3 is not set
# CONFIG_PATA_IT8213 is not set
# CONFIG_PATA_IT821X is not set
# CONFIG_PATA_JMICRON is not set
# CONFIG_PATA_MARVELL is not set
# CONFIG_PATA_NETCELL is not set
# CONFIG_PATA_NINJA32 is not set
# CONFIG_PATA_NS87415 is not set
# CONFIG_PATA_OLDPIIX is not set
# CONFIG_PATA_OPTIDMA is not set
# CONFIG_PATA_PDC2027X is not set
# CONFIG_PATA_PDC_OLD is not set
# CONFIG_PATA_RADISYS is not set
# CONFIG_PATA_RDC is not set
# CONFIG_PATA_SCH is not set
# CONFIG_PATA_SERVERWORKS is not set
# CONFIG_PATA_SIL680 is not set
# CONFIG_PATA_SIS is not set
# CONFIG_PATA_TOSHIBA is not set
# CONFIG_PATA_TRIFLEX is not set
# CONFIG_PATA_VIA is not set
# CONFIG_PATA_WINBOND is not set
#
# PIO-only SFF controllers
#
# CONFIG_PATA_CMD640_PCI is not set
# CONFIG_PATA_MPIIX is not set
# CONFIG_PATA_NS87410 is not set
# CONFIG_PATA_OPTI is not set
# CONFIG_PATA_PLATFORM is not set
# CONFIG_PATA_RZ1000 is not set
#
# Generic fallback / legacy drivers
#
# CONFIG_ATA_GENERIC is not set
# CONFIG_PATA_LEGACY is not set
# CONFIG_MD is not set
# CONFIG_TARGET_CORE is not set
# CONFIG_FUSION is not set
#
# IEEE 1394 (FireWire) support
#
# CONFIG_FIREWIRE is not set
# CONFIG_FIREWIRE_NOSY is not set
# CONFIG_MACINTOSH_DRIVERS is not set
CONFIG_NETDEVICES=y
CONFIG_MII=y
# CONFIG_NET_CORE is not set
# CONFIG_ARCNET is not set
#
# CAIF transport drivers
#
#
# Distributed Switch Architecture drivers
#
CONFIG_ETHERNET=y
# CONFIG_NET_VENDOR_3COM is not set
# CONFIG_NET_VENDOR_ADAPTEC is not set
# CONFIG_NET_VENDOR_AGERE is not set
# CONFIG_NET_VENDOR_ALTEON is not set
# CONFIG_ALTERA_TSE is not set
# CONFIG_NET_VENDOR_AMD is not set
# CONFIG_NET_VENDOR_ARC is not set
# CONFIG_NET_VENDOR_ATHEROS is not set
# CONFIG_NET_VENDOR_AURORA is not set
# CONFIG_NET_CADENCE is not set
# CONFIG_NET_VENDOR_BROADCOM is not set
# CONFIG_NET_VENDOR_BROCADE is not set
# CONFIG_NET_VENDOR_CAVIUM is not set
# CONFIG_NET_VENDOR_CHELSIO is not set
# CONFIG_NET_VENDOR_CISCO is not set
# CONFIG_CX_ECAT is not set
# CONFIG_DNET is not set
# CONFIG_NET_VENDOR_DEC is not set
# CONFIG_NET_VENDOR_DLINK is not set
# CONFIG_NET_VENDOR_EMULEX is not set
# CONFIG_NET_VENDOR_EZCHIP is not set
# CONFIG_NET_VENDOR_EXAR is not set
# CONFIG_NET_VENDOR_HP is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_JME is not set
# CONFIG_NET_VENDOR_MARVELL is not set
# CONFIG_NET_VENDOR_MELLANOX is not set
# CONFIG_NET_VENDOR_MICREL is not set
# CONFIG_NET_VENDOR_MYRI is not set
# CONFIG_FEALNX is not set
# CONFIG_NET_VENDOR_NATSEMI is not set
# CONFIG_NET_VENDOR_NETRONOME is not set
# CONFIG_NET_VENDOR_NVIDIA is not set
# CONFIG_NET_VENDOR_OKI is not set
# CONFIG_ETHOC is not set
# CONFIG_NET_PACKET_ENGINE is not set
# CONFIG_NET_VENDOR_QLOGIC is not set
# CONFIG_NET_VENDOR_QUALCOMM is not set
CONFIG_NET_VENDOR_REALTEK=y
# CONFIG_8139CP is not set
# CONFIG_8139TOO is not set
CONFIG_R8169=y
# CONFIG_NET_VENDOR_RENESAS is not set
# CONFIG_NET_VENDOR_RDC is not set
# CONFIG_NET_VENDOR_ROCKER is not set
# CONFIG_NET_VENDOR_SAMSUNG is not set
# CONFIG_NET_VENDOR_SEEQ is not set
# CONFIG_NET_VENDOR_SILAN is not set
# CONFIG_NET_VENDOR_SIS is not set
# CONFIG_SFC is not set
# CONFIG_NET_VENDOR_SMSC is not set
# CONFIG_NET_VENDOR_STMICRO is not set
# CONFIG_NET_VENDOR_SUN is not set
# CONFIG_NET_VENDOR_SYNOPSYS is not set
# CONFIG_NET_VENDOR_TEHUTI is not set
# CONFIG_NET_VENDOR_TI is not set
# CONFIG_NET_VENDOR_VIA is not set
# CONFIG_NET_VENDOR_WIZNET is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_NET_SB1000 is not set
# CONFIG_PHYLIB is not set
# CONFIG_PPP is not set
# CONFIG_SLIP is not set
# CONFIG_USB_NET_DRIVERS is not set
# CONFIG_WLAN is not set
#
# Enable WiMAX (Networking options) to see the WiMAX drivers
#
# CONFIG_WAN is not set
# CONFIG_VMXNET3 is not set
# CONFIG_FUJITSU_ES is not set
# CONFIG_ISDN is not set
# CONFIG_NVM is not set
#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
# CONFIG_INPUT_POLLDEV is not set
# CONFIG_INPUT_SPARSEKMAP is not set
# CONFIG_INPUT_MATRIXKMAP is not set
#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=y
CONFIG_INPUT_MOUSEDEV_PSAUX=y
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
# CONFIG_INPUT_JOYDEV is not set
CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_EVBUG is not set
#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
# CONFIG_KEYBOARD_ADP5589 is not set
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_QT1070 is not set
# CONFIG_KEYBOARD_QT2160 is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_TCA6416 is not set
# CONFIG_KEYBOARD_TCA8418 is not set
# CONFIG_KEYBOARD_LM8333 is not set
# CONFIG_KEYBOARD_MAX7359 is not set
# CONFIG_KEYBOARD_MCS is not set
# CONFIG_KEYBOARD_MPR121 is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_OPENCORES is not set
# CONFIG_KEYBOARD_SAMSUNG is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_XTKBD is not set
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=y
# CONFIG_MOUSE_PS2_ALPS is not set
# CONFIG_MOUSE_PS2_BYD is not set
CONFIG_MOUSE_PS2_LOGIPS2PP=y
CONFIG_MOUSE_PS2_SYNAPTICS=y
# CONFIG_MOUSE_PS2_CYPRESS is not set
# CONFIG_MOUSE_PS2_LIFEBOOK is not set
# CONFIG_MOUSE_PS2_TRACKPOINT is not set
# CONFIG_MOUSE_PS2_ELANTECH is not set
# CONFIG_MOUSE_PS2_SENTELIC is not set
# CONFIG_MOUSE_PS2_TOUCHKIT is not set
# CONFIG_MOUSE_PS2_FOCALTECH is not set
# CONFIG_MOUSE_SERIAL is not set
# CONFIG_MOUSE_APPLETOUCH is not set
# CONFIG_MOUSE_BCM5974 is not set
# CONFIG_MOUSE_CYAPA is not set
# CONFIG_MOUSE_ELAN_I2C is not set
# CONFIG_MOUSE_VSXXXAA is not set
# CONFIG_MOUSE_SYNAPTICS_I2C is not set
# CONFIG_MOUSE_SYNAPTICS_USB is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
# CONFIG_INPUT_TOUCHSCREEN is not set
# CONFIG_INPUT_MISC is not set
# CONFIG_RMI4_CORE is not set
#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
CONFIG_SERIO_I8042=y
CONFIG_SERIO_SERPORT=y
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
# CONFIG_SERIO_ALTERA_PS2 is not set
# CONFIG_SERIO_PS2MULT is not set
# CONFIG_SERIO_ARC_PS2 is not set
# CONFIG_USERIO is not set
# CONFIG_GAMEPORT is not set
#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_UNIX98_PTYS=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_NOZOMI is not set
# CONFIG_N_GSM is not set
# CONFIG_TRACE_SINK is not set
CONFIG_DEVMEM=y
# CONFIG_DEVKMEM is not set
#
# Serial drivers
#
# CONFIG_SERIAL_8250 is not set
#
# Non-8250 serial port support
#
# CONFIG_SERIAL_UARTLITE is not set
# CONFIG_SERIAL_JSM is not set
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_SC16IS7XX is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_RP2 is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_TTY_PRINTK is not set
# CONFIG_IPMI_HANDLER is not set
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_TIMERIOMEM=y
# CONFIG_HW_RANDOM_INTEL is not set
# CONFIG_HW_RANDOM_AMD is not set
# CONFIG_HW_RANDOM_VIA is not set
CONFIG_NVRAM=y
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
# CONFIG_MWAVE is not set
# CONFIG_RAW_DRIVER is not set
CONFIG_HPET=y
CONFIG_HPET_MMAP=y
CONFIG_HPET_MMAP_DEFAULT=y
CONFIG_HANGCHECK_TIMER=y
# CONFIG_TCG_TPM is not set
# CONFIG_TELCLOCK is not set
CONFIG_DEVPORT=y
# CONFIG_XILLYBUS is not set
#
# I2C support
#
CONFIG_I2C=y
CONFIG_ACPI_I2C_OPREGION=y
CONFIG_I2C_BOARDINFO=y
# CONFIG_I2C_COMPAT is not set
CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_MUX is not set
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_ALGOBIT=y
#
# I2C Hardware Bus support
#
#
# PC SMBus host controller drivers
#
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
# CONFIG_I2C_AMD756 is not set
# CONFIG_I2C_AMD8111 is not set
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_ISCH is not set
# CONFIG_I2C_ISMT is not set
CONFIG_I2C_PIIX4=y
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
# CONFIG_I2C_SIS96X is not set
# CONFIG_I2C_VIA is not set
# CONFIG_I2C_VIAPRO is not set
#
# ACPI drivers
#
CONFIG_I2C_SCMI=y
#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_DESIGNWARE_PLATFORM is not set
# CONFIG_I2C_DESIGNWARE_PCI is not set
# CONFIG_I2C_EMEV2 is not set
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PCA_PLATFORM is not set
# CONFIG_I2C_PXA_PCI is not set
# CONFIG_I2C_SIMTEC is not set
# CONFIG_I2C_XILINX is not set
#
# External I2C/SMBus adapter drivers
#
# CONFIG_I2C_DIOLAN_U2C is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_ROBOTFUZZ_OSIF is not set
# CONFIG_I2C_TAOS_EVM is not set
# CONFIG_I2C_TINY_USB is not set
#
# Other I2C/SMBus bus drivers
#
# CONFIG_I2C_SLAVE is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# CONFIG_SPI is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set
#
# PPS support
#
# CONFIG_PPS is not set
#
# PPS generators support
#
#
# PTP clock support
#
# CONFIG_PTP_1588_CLOCK is not set
#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
CONFIG_PINCTRL=y
#
# Pin controllers
#
# CONFIG_DEBUG_PINCTRL is not set
# CONFIG_PINCTRL_CHERRYVIEW is not set
# CONFIG_PINCTRL_BROXTON is not set
# CONFIG_PINCTRL_SUNRISEPOINT is not set
# CONFIG_GPIOLIB is not set
# CONFIG_W1 is not set
CONFIG_POWER_SUPPLY=y
# CONFIG_POWER_SUPPLY_DEBUG is not set
# CONFIG_PDA_POWER is not set
# CONFIG_TEST_POWER is not set
# CONFIG_BATTERY_DS2780 is not set
# CONFIG_BATTERY_DS2781 is not set
# CONFIG_BATTERY_DS2782 is not set
# CONFIG_BATTERY_SBS is not set
# CONFIG_BATTERY_BQ27XXX is not set
# CONFIG_BATTERY_MAX17040 is not set
# CONFIG_BATTERY_MAX17042 is not set
# CONFIG_CHARGER_MAX8903 is not set
# CONFIG_CHARGER_LP8727 is not set
# CONFIG_CHARGER_BQ2415X is not set
# CONFIG_CHARGER_SMB347 is not set
# CONFIG_BATTERY_GAUGE_LTC2941 is not set
# CONFIG_POWER_RESET is not set
# CONFIG_POWER_AVS is not set
CONFIG_HWMON=y
# CONFIG_HWMON_VID is not set
# CONFIG_HWMON_DEBUG_CHIP is not set
#
# Native drivers
#
# CONFIG_SENSORS_ABITUGURU is not set
# CONFIG_SENSORS_ABITUGURU3 is not set
# CONFIG_SENSORS_AD7414 is not set
# CONFIG_SENSORS_AD7418 is not set
# CONFIG_SENSORS_ADM1021 is not set
# CONFIG_SENSORS_ADM1025 is not set
# CONFIG_SENSORS_ADM1026 is not set
# CONFIG_SENSORS_ADM1029 is not set
# CONFIG_SENSORS_ADM1031 is not set
# CONFIG_SENSORS_ADM9240 is not set
# CONFIG_SENSORS_ADT7410 is not set
# CONFIG_SENSORS_ADT7411 is not set
# CONFIG_SENSORS_ADT7462 is not set
# CONFIG_SENSORS_ADT7470 is not set
# CONFIG_SENSORS_ADT7475 is not set
# CONFIG_SENSORS_ASC7621 is not set
# CONFIG_SENSORS_K8TEMP is not set
CONFIG_SENSORS_K10TEMP=y
CONFIG_SENSORS_FAM15H_POWER=y
# CONFIG_SENSORS_APPLESMC is not set
# CONFIG_SENSORS_ASB100 is not set
# CONFIG_SENSORS_ATXP1 is not set
# CONFIG_SENSORS_DS620 is not set
# CONFIG_SENSORS_DS1621 is not set
# CONFIG_SENSORS_DELL_SMM is not set
# CONFIG_SENSORS_I5K_AMB is not set
# CONFIG_SENSORS_F71805F is not set
# CONFIG_SENSORS_F71882FG is not set
# CONFIG_SENSORS_F75375S is not set
# CONFIG_SENSORS_FSCHMD is not set
# CONFIG_SENSORS_FTSTEUTATES is not set
# CONFIG_SENSORS_GL518SM is not set
# CONFIG_SENSORS_GL520SM is not set
# CONFIG_SENSORS_G760A is not set
# CONFIG_SENSORS_G762 is not set
# CONFIG_SENSORS_HIH6130 is not set
# CONFIG_SENSORS_I5500 is not set
# CONFIG_SENSORS_CORETEMP is not set
# CONFIG_SENSORS_IT87 is not set
# CONFIG_SENSORS_JC42 is not set
# CONFIG_SENSORS_POWR1220 is not set
# CONFIG_SENSORS_LINEAGE is not set
# CONFIG_SENSORS_LTC2945 is not set
# CONFIG_SENSORS_LTC2990 is not set
# CONFIG_SENSORS_LTC4151 is not set
# CONFIG_SENSORS_LTC4215 is not set
# CONFIG_SENSORS_LTC4222 is not set
# CONFIG_SENSORS_LTC4245 is not set
# CONFIG_SENSORS_LTC4260 is not set
# CONFIG_SENSORS_LTC4261 is not set
# CONFIG_SENSORS_MAX16065 is not set
# CONFIG_SENSORS_MAX1619 is not set
# CONFIG_SENSORS_MAX1668 is not set
# CONFIG_SENSORS_MAX197 is not set
# CONFIG_SENSORS_MAX6639 is not set
# CONFIG_SENSORS_MAX6642 is not set
# CONFIG_SENSORS_MAX6650 is not set
# CONFIG_SENSORS_MAX6697 is not set
# CONFIG_SENSORS_MAX31790 is not set
# CONFIG_SENSORS_MCP3021 is not set
# CONFIG_SENSORS_LM63 is not set
# CONFIG_SENSORS_LM73 is not set
# CONFIG_SENSORS_LM75 is not set
# CONFIG_SENSORS_LM77 is not set
# CONFIG_SENSORS_LM78 is not set
# CONFIG_SENSORS_LM80 is not set
# CONFIG_SENSORS_LM83 is not set
# CONFIG_SENSORS_LM85 is not set
# CONFIG_SENSORS_LM87 is not set
# CONFIG_SENSORS_LM90 is not set
# CONFIG_SENSORS_LM92 is not set
# CONFIG_SENSORS_LM93 is not set
# CONFIG_SENSORS_LM95234 is not set
# CONFIG_SENSORS_LM95241 is not set
# CONFIG_SENSORS_LM95245 is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_PC87427 is not set
# CONFIG_SENSORS_NTC_THERMISTOR is not set
# CONFIG_SENSORS_NCT6683 is not set
# CONFIG_SENSORS_NCT6775 is not set
# CONFIG_SENSORS_NCT7802 is not set
# CONFIG_SENSORS_NCT7904 is not set
# CONFIG_SENSORS_PCF8591 is not set
# CONFIG_PMBUS is not set
# CONFIG_SENSORS_SHT21 is not set
# CONFIG_SENSORS_SHT3x is not set
# CONFIG_SENSORS_SHTC1 is not set
# CONFIG_SENSORS_SIS5595 is not set
# CONFIG_SENSORS_DME1737 is not set
# CONFIG_SENSORS_EMC1403 is not set
# CONFIG_SENSORS_EMC2103 is not set
# CONFIG_SENSORS_EMC6W201 is not set
# CONFIG_SENSORS_SMSC47M1 is not set
# CONFIG_SENSORS_SMSC47M192 is not set
# CONFIG_SENSORS_SMSC47B397 is not set
# CONFIG_SENSORS_SCH56XX_COMMON is not set
# CONFIG_SENSORS_SCH5627 is not set
# CONFIG_SENSORS_SCH5636 is not set
# CONFIG_SENSORS_SMM665 is not set
# CONFIG_SENSORS_ADC128D818 is not set
# CONFIG_SENSORS_ADS1015 is not set
# CONFIG_SENSORS_ADS7828 is not set
# CONFIG_SENSORS_AMC6821 is not set
# CONFIG_SENSORS_INA209 is not set
# CONFIG_SENSORS_INA2XX is not set
# CONFIG_SENSORS_INA3221 is not set
# CONFIG_SENSORS_TC74 is not set
# CONFIG_SENSORS_THMC50 is not set
# CONFIG_SENSORS_TMP102 is not set
# CONFIG_SENSORS_TMP103 is not set
# CONFIG_SENSORS_TMP401 is not set
# CONFIG_SENSORS_TMP421 is not set
# CONFIG_SENSORS_VIA_CPUTEMP is not set
# CONFIG_SENSORS_VIA686A is not set
# CONFIG_SENSORS_VT1211 is not set
# CONFIG_SENSORS_VT8231 is not set
# CONFIG_SENSORS_W83781D is not set
# CONFIG_SENSORS_W83791D is not set
# CONFIG_SENSORS_W83792D is not set
# CONFIG_SENSORS_W83793 is not set
# CONFIG_SENSORS_W83795 is not set
# CONFIG_SENSORS_W83L785TS is not set
# CONFIG_SENSORS_W83L786NG is not set
# CONFIG_SENSORS_W83627HF is not set
# CONFIG_SENSORS_W83627EHF is not set
#
# ACPI drivers
#
# CONFIG_SENSORS_ACPI_POWER is not set
# CONFIG_SENSORS_ATK0110 is not set
# CONFIG_THERMAL is not set
CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_CORE=y
CONFIG_WATCHDOG_NOWAYOUT=y
CONFIG_WATCHDOG_SYSFS=y
#
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
# CONFIG_XILINX_WATCHDOG is not set
# CONFIG_ZIIRAVE_WATCHDOG is not set
# CONFIG_CADENCE_WATCHDOG is not set
# CONFIG_DW_WATCHDOG is not set
# CONFIG_MAX63XX_WATCHDOG is not set
# CONFIG_ACQUIRE_WDT is not set
# CONFIG_ADVANTECH_WDT is not set
# CONFIG_ALIM1535_WDT is not set
# CONFIG_ALIM7101_WDT is not set
# CONFIG_EBC_C384_WDT is not set
# CONFIG_F71808E_WDT is not set
CONFIG_SP5100_TCO=y
# CONFIG_SBC_FITPC2_WATCHDOG is not set
# CONFIG_EUROTECH_WDT is not set
# CONFIG_IB700_WDT is not set
# CONFIG_IBMASR is not set
# CONFIG_WAFER_WDT is not set
# CONFIG_I6300ESB_WDT is not set
# CONFIG_IE6XX_WDT is not set
# CONFIG_ITCO_WDT is not set
# CONFIG_IT8712F_WDT is not set
# CONFIG_IT87_WDT is not set
# CONFIG_HP_WATCHDOG is not set
# CONFIG_SC1200_WDT is not set
# CONFIG_PC87413_WDT is not set
# CONFIG_NV_TCO is not set
# CONFIG_60XX_WDT is not set
# CONFIG_CPU5_WDT is not set
# CONFIG_SMSC_SCH311X_WDT is not set
# CONFIG_SMSC37B787_WDT is not set
# CONFIG_VIA_WDT is not set
# CONFIG_W83627HF_WDT is not set
# CONFIG_W83877F_WDT is not set
# CONFIG_W83977F_WDT is not set
# CONFIG_MACHZ_WDT is not set
# CONFIG_SBC_EPX_C3_WATCHDOG is not set
# CONFIG_NI903X_WDT is not set
#
# PCI-based Watchdog Cards
#
# CONFIG_PCIPCWATCHDOG is not set
# CONFIG_WDTPCI is not set
#
# USB-based Watchdog Cards
#
# CONFIG_USBPCWATCHDOG is not set
CONFIG_SSB_POSSIBLE=y
#
# Sonics Silicon Backplane
#
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y
#
# Broadcom specific AMBA
#
# CONFIG_BCMA is not set
#
# Multifunction device drivers
#
# CONFIG_MFD_CORE is not set
# CONFIG_MFD_AS3711 is not set
# CONFIG_PMIC_ADP5520 is not set
# CONFIG_MFD_BCM590XX is not set
# CONFIG_MFD_AXP20X_I2C is not set
# CONFIG_MFD_CROS_EC is not set
# CONFIG_PMIC_DA903X is not set
# CONFIG_MFD_DA9052_I2C is not set
# CONFIG_MFD_DA9055 is not set
# CONFIG_MFD_DA9062 is not set
# CONFIG_MFD_DA9063 is not set
# CONFIG_MFD_DA9150 is not set
# CONFIG_MFD_DLN2 is not set
# CONFIG_MFD_MC13XXX_I2C is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_MFD_INTEL_QUARK_I2C_GPIO is not set
# CONFIG_LPC_ICH is not set
# CONFIG_LPC_SCH is not set
# CONFIG_MFD_INTEL_LPSS_ACPI is not set
# CONFIG_MFD_INTEL_LPSS_PCI is not set
# CONFIG_MFD_JANZ_CMODIO is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_88PM800 is not set
# CONFIG_MFD_88PM805 is not set
# CONFIG_MFD_88PM860X is not set
# CONFIG_MFD_MAX14577 is not set
# CONFIG_MFD_MAX77693 is not set
# CONFIG_MFD_MAX77843 is not set
# CONFIG_MFD_MAX8907 is not set
# CONFIG_MFD_MAX8925 is not set
# CONFIG_MFD_MAX8997 is not set
# CONFIG_MFD_MAX8998 is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_MENF21BMC is not set
# CONFIG_MFD_VIPERBOARD is not set
# CONFIG_MFD_RETU is not set
# CONFIG_MFD_PCF50633 is not set
# CONFIG_MFD_RDC321X is not set
# CONFIG_MFD_RTSX_PCI is not set
# CONFIG_MFD_RT5033 is not set
# CONFIG_MFD_RTSX_USB is not set
# CONFIG_MFD_RC5T583 is not set
# CONFIG_MFD_SEC_CORE is not set
# CONFIG_MFD_SI476X_CORE is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_SKY81452 is not set
# CONFIG_MFD_SMSC is not set
# CONFIG_ABX500_CORE is not set
# CONFIG_MFD_SYSCON is not set
# CONFIG_MFD_TI_AM335X_TSCADC is not set
# CONFIG_MFD_LP3943 is not set
# CONFIG_MFD_LP8788 is not set
# CONFIG_MFD_PALMAS is not set
# CONFIG_TPS6105X is not set
# CONFIG_TPS6507X is not set
# CONFIG_MFD_TPS65086 is not set
# CONFIG_MFD_TPS65090 is not set
# CONFIG_MFD_TPS65217 is not set
# CONFIG_MFD_TPS65218 is not set
# CONFIG_MFD_TPS6586X is not set
# CONFIG_MFD_TPS65912_I2C is not set
# CONFIG_MFD_TPS80031 is not set
# CONFIG_TWL4030_CORE is not set
# CONFIG_TWL6040_CORE is not set
# CONFIG_MFD_WL1273_CORE is not set
# CONFIG_MFD_LM3533 is not set
# CONFIG_MFD_TMIO is not set
# CONFIG_MFD_VX855 is not set
# CONFIG_MFD_ARIZONA_I2C is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM831X_I2C is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_WM8994 is not set
# CONFIG_REGULATOR is not set
# CONFIG_MEDIA_SUPPORT is not set
#
# Graphics support
#
CONFIG_AGP=y
# CONFIG_AGP_AMD64 is not set
# CONFIG_AGP_INTEL is not set
# CONFIG_AGP_SIS is not set
# CONFIG_AGP_VIA is not set
# CONFIG_VGA_ARB is not set
# CONFIG_VGA_SWITCHEROO is not set
CONFIG_DRM=y
# CONFIG_DRM_DP_AUX_CHARDEV is not set
CONFIG_DRM_KMS_HELPER=y
CONFIG_DRM_KMS_FB_HELPER=y
CONFIG_DRM_FBDEV_EMULATION=y
# CONFIG_DRM_LOAD_EDID_FIRMWARE is not set
CONFIG_DRM_TTM=y
#
# I2C encoder or helper chips
#
# CONFIG_DRM_I2C_CH7006 is not set
# CONFIG_DRM_I2C_SIL164 is not set
# CONFIG_DRM_I2C_NXP_TDA998X is not set
# CONFIG_DRM_TDFX is not set
# CONFIG_DRM_R128 is not set
CONFIG_DRM_RADEON=y
# CONFIG_DRM_RADEON_USERPTR is not set
# CONFIG_DRM_AMDGPU is not set
#
# ACP (Audio CoProcessor) Configuration
#
# CONFIG_DRM_NOUVEAU is not set
# CONFIG_DRM_I915 is not set
# CONFIG_DRM_MGA is not set
# CONFIG_DRM_SIS is not set
# CONFIG_DRM_VIA is not set
# CONFIG_DRM_SAVAGE is not set
# CONFIG_DRM_VGEM is not set
# CONFIG_DRM_VMWGFX is not set
# CONFIG_DRM_GMA500 is not set
# CONFIG_DRM_UDL is not set
# CONFIG_DRM_AST is not set
# CONFIG_DRM_MGAG200 is not set
# CONFIG_DRM_CIRRUS_QEMU is not set
# CONFIG_DRM_QXL is not set
# CONFIG_DRM_BOCHS is not set
CONFIG_DRM_BRIDGE=y
#
# Display Interface Bridges
#
# CONFIG_DRM_ANALOGIX_ANX78XX is not set
# CONFIG_HSA_AMD is not set
#
# Frame buffer Devices
#
CONFIG_FB=y
CONFIG_FIRMWARE_EDID=y
CONFIG_FB_CMDLINE=y
CONFIG_FB_NOTIFY=y
# CONFIG_FB_DDC is not set
# CONFIG_FB_BOOT_VESA_SUPPORT is not set
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
CONFIG_FB_SYS_FILLRECT=y
CONFIG_FB_SYS_COPYAREA=y
CONFIG_FB_SYS_IMAGEBLIT=y
# CONFIG_FB_FOREIGN_ENDIAN is not set
CONFIG_FB_SYS_FOPS=y
CONFIG_FB_DEFERRED_IO=y
# CONFIG_FB_SVGALIB is not set
# CONFIG_FB_MACMODES is not set
# CONFIG_FB_BACKLIGHT is not set
# CONFIG_FB_MODE_HELPERS is not set
# CONFIG_FB_TILEBLITTING is not set
#
# Frame buffer hardware drivers
#
# CONFIG_FB_CIRRUS is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_CYBER2000 is not set
# CONFIG_FB_ARC is not set
# CONFIG_FB_ASILIANT is not set
# CONFIG_FB_IMSTT is not set
# CONFIG_FB_VGA16 is not set
# CONFIG_FB_UVESA is not set
# CONFIG_FB_VESA is not set
# CONFIG_FB_N411 is not set
# CONFIG_FB_HGA is not set
# CONFIG_FB_OPENCORES is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_NVIDIA is not set
# CONFIG_FB_RIVA is not set
# CONFIG_FB_I740 is not set
# CONFIG_FB_LE80578 is not set
# CONFIG_FB_MATROX is not set
# CONFIG_FB_RADEON is not set
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_ATY is not set
# CONFIG_FB_S3 is not set
# CONFIG_FB_SAVAGE is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_NEOMAGIC is not set
# CONFIG_FB_KYRO is not set
# CONFIG_FB_3DFX is not set
# CONFIG_FB_VOODOO1 is not set
# CONFIG_FB_VT8623 is not set
# CONFIG_FB_TRIDENT is not set
# CONFIG_FB_ARK is not set
# CONFIG_FB_PM3 is not set
# CONFIG_FB_CARMINE is not set
# CONFIG_FB_SMSCUFX is not set
# CONFIG_FB_UDL is not set
# CONFIG_FB_IBM_GXT4500 is not set
# CONFIG_FB_VIRTUAL is not set
# CONFIG_FB_METRONOME is not set
# CONFIG_FB_MB862XX is not set
# CONFIG_FB_BROADSHEET is not set
# CONFIG_FB_AUO_K190X is not set
CONFIG_FB_SIMPLE=y
# CONFIG_FB_SM712 is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=y
# CONFIG_LCD_PLATFORM is not set
CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_BACKLIGHT_GENERIC=y
# CONFIG_BACKLIGHT_APPLE is not set
# CONFIG_BACKLIGHT_PM8941_WLED is not set
# CONFIG_BACKLIGHT_SAHARA is not set
# CONFIG_BACKLIGHT_ADP8860 is not set
# CONFIG_BACKLIGHT_ADP8870 is not set
# CONFIG_BACKLIGHT_LM3639 is not set
# CONFIG_BACKLIGHT_LV5207LP is not set
# CONFIG_BACKLIGHT_BD6107 is not set
# CONFIG_VGASTATE is not set
CONFIG_HDMI=y
#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
# CONFIG_VGACON_SOFT_SCROLLBACK is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_DUMMY_CONSOLE_COLUMNS=80
CONFIG_DUMMY_CONSOLE_ROWS=25
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
# CONFIG_LOGO is not set
CONFIG_SOUND=y
CONFIG_SOUND_OSS_CORE=y
CONFIG_SOUND_OSS_CORE_PRECLAIM=y
CONFIG_SND=y
CONFIG_SND_TIMER=y
CONFIG_SND_PCM=y
CONFIG_SND_HWDEP=y
CONFIG_SND_RAWMIDI=y
CONFIG_SND_JACK=y
CONFIG_SND_JACK_INPUT_DEV=y
CONFIG_SND_SEQUENCER=y
# CONFIG_SND_SEQ_DUMMY is not set
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=y
CONFIG_SND_PCM_OSS=y
CONFIG_SND_PCM_OSS_PLUGINS=y
CONFIG_SND_PCM_TIMER=y
CONFIG_SND_SEQUENCER_OSS=y
CONFIG_SND_HRTIMER=y
CONFIG_SND_SEQ_HRTIMER_DEFAULT=y
# CONFIG_SND_DYNAMIC_MINORS is not set
# CONFIG_SND_SUPPORT_OLD_API is not set
CONFIG_SND_PROC_FS=y
CONFIG_SND_VERBOSE_PROCFS=y
# CONFIG_SND_VERBOSE_PRINTK is not set
# CONFIG_SND_DEBUG is not set
CONFIG_SND_VMASTER=y
CONFIG_SND_DMA_SGBUF=y
CONFIG_SND_RAWMIDI_SEQ=y
# CONFIG_SND_OPL3_LIB_SEQ is not set
# CONFIG_SND_OPL4_LIB_SEQ is not set
# CONFIG_SND_SBAWE_SEQ is not set
# CONFIG_SND_EMU10K1_SEQ is not set
# CONFIG_SND_DRIVERS is not set
CONFIG_SND_PCI=y
# CONFIG_SND_AD1889 is not set
# CONFIG_SND_ALS300 is not set
# CONFIG_SND_ALS4000 is not set
# CONFIG_SND_ALI5451 is not set
# CONFIG_SND_ASIHPI is not set
# CONFIG_SND_ATIIXP is not set
# CONFIG_SND_ATIIXP_MODEM is not set
# CONFIG_SND_AU8810 is not set
# CONFIG_SND_AU8820 is not set
# CONFIG_SND_AU8830 is not set
# CONFIG_SND_AW2 is not set
# CONFIG_SND_AZT3328 is not set
# CONFIG_SND_BT87X is not set
# CONFIG_SND_CA0106 is not set
# CONFIG_SND_CMIPCI is not set
# CONFIG_SND_OXYGEN is not set
# CONFIG_SND_CS4281 is not set
# CONFIG_SND_CS46XX is not set
# CONFIG_SND_CTXFI is not set
# CONFIG_SND_DARLA20 is not set
# CONFIG_SND_GINA20 is not set
# CONFIG_SND_LAYLA20 is not set
# CONFIG_SND_DARLA24 is not set
# CONFIG_SND_GINA24 is not set
# CONFIG_SND_LAYLA24 is not set
# CONFIG_SND_MONA is not set
# CONFIG_SND_MIA is not set
# CONFIG_SND_ECHO3G is not set
# CONFIG_SND_INDIGO is not set
# CONFIG_SND_INDIGOIO is not set
# CONFIG_SND_INDIGODJ is not set
# CONFIG_SND_INDIGOIOX is not set
# CONFIG_SND_INDIGODJX is not set
# CONFIG_SND_EMU10K1 is not set
# CONFIG_SND_EMU10K1X is not set
# CONFIG_SND_ENS1370 is not set
# CONFIG_SND_ENS1371 is not set
# CONFIG_SND_ES1938 is not set
# CONFIG_SND_ES1968 is not set
# CONFIG_SND_FM801 is not set
# CONFIG_SND_HDSP is not set
# CONFIG_SND_HDSPM is not set
# CONFIG_SND_ICE1712 is not set
# CONFIG_SND_ICE1724 is not set
# CONFIG_SND_INTEL8X0 is not set
# CONFIG_SND_INTEL8X0M is not set
# CONFIG_SND_KORG1212 is not set
# CONFIG_SND_LOLA is not set
# CONFIG_SND_LX6464ES is not set
# CONFIG_SND_MAESTRO3 is not set
# CONFIG_SND_MIXART is not set
# CONFIG_SND_NM256 is not set
# CONFIG_SND_PCXHR is not set
# CONFIG_SND_RIPTIDE is not set
# CONFIG_SND_RME32 is not set
# CONFIG_SND_RME96 is not set
# CONFIG_SND_RME9652 is not set
# CONFIG_SND_SE6X is not set
# CONFIG_SND_SONICVIBES is not set
# CONFIG_SND_TRIDENT is not set
# CONFIG_SND_VIA82XX is not set
# CONFIG_SND_VIA82XX_MODEM is not set
# CONFIG_SND_VIRTUOSO is not set
# CONFIG_SND_VX222 is not set
# CONFIG_SND_YMFPCI is not set
#
# HD-Audio
#
CONFIG_SND_HDA=y
CONFIG_SND_HDA_INTEL=y
# CONFIG_SND_HDA_HWDEP is not set
# CONFIG_SND_HDA_RECONFIG is not set
# CONFIG_SND_HDA_INPUT_BEEP is not set
# CONFIG_SND_HDA_PATCH_LOADER is not set
# CONFIG_SND_HDA_CODEC_REALTEK is not set
# CONFIG_SND_HDA_CODEC_ANALOG is not set
# CONFIG_SND_HDA_CODEC_SIGMATEL is not set
# CONFIG_SND_HDA_CODEC_VIA is not set
# CONFIG_SND_HDA_CODEC_HDMI is not set
# CONFIG_SND_HDA_CODEC_CIRRUS is not set
# CONFIG_SND_HDA_CODEC_CONEXANT is not set
# CONFIG_SND_HDA_CODEC_CA0110 is not set
# CONFIG_SND_HDA_CODEC_CA0132 is not set
# CONFIG_SND_HDA_CODEC_CMEDIA is not set
# CONFIG_SND_HDA_CODEC_SI3054 is not set
CONFIG_SND_HDA_GENERIC=y
CONFIG_SND_HDA_CORE=y
CONFIG_SND_HDA_PREALLOC_SIZE=256
CONFIG_SND_USB=y
CONFIG_SND_USB_AUDIO=y
# CONFIG_SND_USB_UA101 is not set
# CONFIG_SND_USB_USX2Y is not set
# CONFIG_SND_USB_CAIAQ is not set
# CONFIG_SND_USB_US122L is not set
# CONFIG_SND_USB_6FIRE is not set
# CONFIG_SND_USB_HIFACE is not set
# CONFIG_SND_BCD2000 is not set
# CONFIG_SND_USB_POD is not set
# CONFIG_SND_USB_PODHD is not set
# CONFIG_SND_USB_TONEPORT is not set
# CONFIG_SND_USB_VARIAX is not set
# CONFIG_SND_SOC is not set
# CONFIG_SOUND_PRIME is not set
#
# HID support
#
CONFIG_HID=y
# CONFIG_HID_BATTERY_STRENGTH is not set
# CONFIG_HIDRAW is not set
# CONFIG_UHID is not set
CONFIG_HID_GENERIC=y
#
# Special HID drivers
#
# CONFIG_HID_A4TECH is not set
# CONFIG_HID_ACRUX is not set
# CONFIG_HID_APPLE is not set
# CONFIG_HID_APPLEIR is not set
# CONFIG_HID_AUREAL is not set
# CONFIG_HID_BELKIN is not set
# CONFIG_HID_BETOP_FF is not set
# CONFIG_HID_CHERRY is not set
# CONFIG_HID_CHICONY is not set
# CONFIG_HID_PRODIKEYS is not set
# CONFIG_HID_CMEDIA is not set
# CONFIG_HID_CYPRESS is not set
# CONFIG_HID_DRAGONRISE is not set
# CONFIG_HID_EMS_FF is not set
# CONFIG_HID_ELECOM is not set
# CONFIG_HID_ELO is not set
# CONFIG_HID_EZKEY is not set
# CONFIG_HID_GEMBIRD is not set
# CONFIG_HID_GFRM is not set
# CONFIG_HID_HOLTEK is not set
# CONFIG_HID_KEYTOUCH is not set
# CONFIG_HID_KYE is not set
# CONFIG_HID_UCLOGIC is not set
# CONFIG_HID_WALTOP is not set
# CONFIG_HID_GYRATION is not set
# CONFIG_HID_ICADE is not set
# CONFIG_HID_TWINHAN is not set
# CONFIG_HID_KENSINGTON is not set
# CONFIG_HID_LCPOWER is not set
# CONFIG_HID_LENOVO is not set
# CONFIG_HID_LOGITECH is not set
# CONFIG_HID_MAGICMOUSE is not set
# CONFIG_HID_MICROSOFT is not set
# CONFIG_HID_MONTEREY is not set
# CONFIG_HID_MULTITOUCH is not set
# CONFIG_HID_NTRIG is not set
# CONFIG_HID_ORTEK is not set
# CONFIG_HID_PANTHERLORD is not set
# CONFIG_HID_PENMOUNT is not set
# CONFIG_HID_PETALYNX is not set
# CONFIG_HID_PICOLCD is not set
# CONFIG_HID_PLANTRONICS is not set
# CONFIG_HID_PRIMAX is not set
# CONFIG_HID_ROCCAT is not set
# CONFIG_HID_SAITEK is not set
# CONFIG_HID_SAMSUNG is not set
# CONFIG_HID_SPEEDLINK is not set
# CONFIG_HID_STEELSERIES is not set
# CONFIG_HID_SUNPLUS is not set
# CONFIG_HID_RMI is not set
# CONFIG_HID_GREENASIA is not set
# CONFIG_HID_SMARTJOYPLUS is not set
# CONFIG_HID_TIVO is not set
# CONFIG_HID_TOPSEED is not set
# CONFIG_HID_THRUSTMASTER is not set
# CONFIG_HID_WACOM is not set
# CONFIG_HID_XINMO is not set
# CONFIG_HID_ZEROPLUS is not set
# CONFIG_HID_ZYDACRON is not set
# CONFIG_HID_SENSOR_HUB is not set
# CONFIG_HID_ALPS is not set
#
# USB HID support
#
CONFIG_USB_HID=y
# CONFIG_HID_PID is not set
# CONFIG_USB_HIDDEV is not set
#
# I2C HID support
#
# CONFIG_I2C_HID is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_COMMON=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB=y
# CONFIG_USB_ANNOUNCE_NEW_DEVICES is not set
#
# Miscellaneous USB options
#
CONFIG_USB_DEFAULT_PERSIST=y
# CONFIG_USB_DYNAMIC_MINORS is not set
# CONFIG_USB_OTG_WHITELIST is not set
# CONFIG_USB_OTG_BLACKLIST_HUB is not set
# CONFIG_USB_ULPI_BUS is not set
# CONFIG_USB_MON is not set
# CONFIG_USB_WUSB_CBAF is not set
#
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not set
CONFIG_USB_XHCI_HCD=y
CONFIG_USB_XHCI_PCI=y
# CONFIG_USB_XHCI_PLATFORM is not set
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
CONFIG_USB_EHCI_TT_NEWSCHED=y
CONFIG_USB_EHCI_PCI=y
# CONFIG_USB_EHCI_HCD_PLATFORM is not set
# CONFIG_USB_OXU210HP_HCD is not set
# CONFIG_USB_ISP116X_HCD is not set
# CONFIG_USB_ISP1362_HCD is not set
# CONFIG_USB_FOTG210_HCD is not set
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_PCI=y
# CONFIG_USB_OHCI_HCD_PLATFORM is not set
# CONFIG_USB_UHCI_HCD is not set
# CONFIG_USB_SL811_HCD is not set
# CONFIG_USB_R8A66597_HCD is not set
# CONFIG_USB_HCD_TEST_MODE is not set
#
# USB Device Class drivers
#
# CONFIG_USB_ACM is not set
# CONFIG_USB_PRINTER is not set
# CONFIG_USB_WDM is not set
# CONFIG_USB_TMC is not set
#
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
#
#
# also be needed; see USB_STORAGE Help for more info
#
CONFIG_USB_STORAGE=y
# CONFIG_USB_STORAGE_DEBUG is not set
# CONFIG_USB_STORAGE_REALTEK is not set
# CONFIG_USB_STORAGE_DATAFAB is not set
# CONFIG_USB_STORAGE_FREECOM is not set
# CONFIG_USB_STORAGE_ISD200 is not set
# CONFIG_USB_STORAGE_USBAT is not set
# CONFIG_USB_STORAGE_SDDR09 is not set
# CONFIG_USB_STORAGE_SDDR55 is not set
# CONFIG_USB_STORAGE_JUMPSHOT is not set
# CONFIG_USB_STORAGE_ALAUDA is not set
# CONFIG_USB_STORAGE_ONETOUCH is not set
# CONFIG_USB_STORAGE_KARMA is not set
# CONFIG_USB_STORAGE_CYPRESS_ATACB is not set
# CONFIG_USB_STORAGE_ENE_UB6250 is not set
# CONFIG_USB_UAS is not set
#
# USB Imaging devices
#
# CONFIG_USB_MDC800 is not set
# CONFIG_USB_MICROTEK is not set
# CONFIG_USBIP_CORE is not set
# CONFIG_USB_MUSB_HDRC is not set
# CONFIG_USB_DWC3 is not set
# CONFIG_USB_DWC2 is not set
# CONFIG_USB_CHIPIDEA is not set
# CONFIG_USB_ISP1760 is not set
#
# USB port drivers
#
CONFIG_USB_SERIAL=y
# CONFIG_USB_SERIAL_CONSOLE is not set
# CONFIG_USB_SERIAL_GENERIC is not set
# CONFIG_USB_SERIAL_SIMPLE is not set
# CONFIG_USB_SERIAL_AIRCABLE is not set
# CONFIG_USB_SERIAL_ARK3116 is not set
# CONFIG_USB_SERIAL_BELKIN is not set
# CONFIG_USB_SERIAL_CH341 is not set
# CONFIG_USB_SERIAL_WHITEHEAT is not set
# CONFIG_USB_SERIAL_DIGI_ACCELEPORT is not set
# CONFIG_USB_SERIAL_CP210X is not set
# CONFIG_USB_SERIAL_CYPRESS_M8 is not set
# CONFIG_USB_SERIAL_EMPEG is not set
CONFIG_USB_SERIAL_FTDI_SIO=y
# CONFIG_USB_SERIAL_VISOR is not set
# CONFIG_USB_SERIAL_IPAQ is not set
# CONFIG_USB_SERIAL_IR is not set
# CONFIG_USB_SERIAL_EDGEPORT is not set
# CONFIG_USB_SERIAL_EDGEPORT_TI is not set
# CONFIG_USB_SERIAL_F81232 is not set
# CONFIG_USB_SERIAL_GARMIN is not set
# CONFIG_USB_SERIAL_IPW is not set
# CONFIG_USB_SERIAL_IUU is not set
# CONFIG_USB_SERIAL_KEYSPAN_PDA is not set
# CONFIG_USB_SERIAL_KEYSPAN is not set
# CONFIG_USB_SERIAL_KLSI is not set
# CONFIG_USB_SERIAL_KOBIL_SCT is not set
# CONFIG_USB_SERIAL_MCT_U232 is not set
# CONFIG_USB_SERIAL_METRO is not set
# CONFIG_USB_SERIAL_MOS7720 is not set
# CONFIG_USB_SERIAL_MOS7840 is not set
# CONFIG_USB_SERIAL_MXUPORT is not set
# CONFIG_USB_SERIAL_NAVMAN is not set
# CONFIG_USB_SERIAL_PL2303 is not set
# CONFIG_USB_SERIAL_OTI6858 is not set
# CONFIG_USB_SERIAL_QCAUX is not set
# CONFIG_USB_SERIAL_QUALCOMM is not set
# CONFIG_USB_SERIAL_SPCP8X5 is not set
# CONFIG_USB_SERIAL_SAFE is not set
# CONFIG_USB_SERIAL_SIERRAWIRELESS is not set
# CONFIG_USB_SERIAL_SYMBOL is not set
# CONFIG_USB_SERIAL_TI is not set
# CONFIG_USB_SERIAL_CYBERJACK is not set
# CONFIG_USB_SERIAL_XIRCOM is not set
# CONFIG_USB_SERIAL_OPTION is not set
# CONFIG_USB_SERIAL_OMNINET is not set
# CONFIG_USB_SERIAL_OPTICON is not set
# CONFIG_USB_SERIAL_XSENS_MT is not set
# CONFIG_USB_SERIAL_WISHBONE is not set
# CONFIG_USB_SERIAL_SSU100 is not set
# CONFIG_USB_SERIAL_QT2 is not set
# CONFIG_USB_SERIAL_DEBUG is not set
#
# USB Miscellaneous drivers
#
# CONFIG_USB_EMI62 is not set
# CONFIG_USB_EMI26 is not set
# CONFIG_USB_ADUTUX is not set
# CONFIG_USB_SEVSEG is not set
# CONFIG_USB_RIO500 is not set
# CONFIG_USB_LEGOTOWER is not set
# CONFIG_USB_LCD is not set
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_IDMOUSE is not set
# CONFIG_USB_FTDI_ELAN is not set
# CONFIG_USB_APPLEDISPLAY is not set
# CONFIG_USB_SISUSBVGA is not set
# CONFIG_USB_LD is not set
# CONFIG_USB_TRANCEVIBRATOR is not set
# CONFIG_USB_IOWARRIOR is not set
# CONFIG_USB_TEST is not set
# CONFIG_USB_EHSET_TEST_FIXTURE is not set
# CONFIG_USB_ISIGHTFW is not set
# CONFIG_USB_YUREX is not set
# CONFIG_USB_EZUSB_FX2 is not set
# CONFIG_USB_HSIC_USB3503 is not set
# CONFIG_USB_LINK_LAYER_TEST is not set
# CONFIG_USB_CHAOSKEY is not set
# CONFIG_UCSI is not set
#
# USB Physical Layer drivers
#
# CONFIG_USB_PHY is not set
# CONFIG_NOP_USB_XCEIV is not set
# CONFIG_USB_ISP1301 is not set
# CONFIG_USB_GADGET is not set
# CONFIG_UWB is not set
CONFIG_MMC=y
# CONFIG_MMC_DEBUG is not set
#
# MMC/SD/SDIO Card Drivers
#
CONFIG_MMC_BLOCK=y
CONFIG_MMC_BLOCK_MINORS=8
CONFIG_MMC_BLOCK_BOUNCE=y
# CONFIG_SDIO_UART is not set
# CONFIG_MMC_TEST is not set
#
# MMC/SD/SDIO Host Controller Drivers
#
# CONFIG_MMC_SDHCI is not set
# CONFIG_MMC_WBSD is not set
# CONFIG_MMC_TIFM_SD is not set
# CONFIG_MMC_CB710 is not set
# CONFIG_MMC_VIA_SDMMC is not set
# CONFIG_MMC_VUB300 is not set
# CONFIG_MMC_USHC is not set
# CONFIG_MMC_USDHI6ROL0 is not set
# CONFIG_MMC_TOSHIBA_PCI is not set
# CONFIG_MMC_MTK is not set
CONFIG_MEMSTICK=y
# CONFIG_MEMSTICK_DEBUG is not set
#
# MemoryStick drivers
#
# CONFIG_MEMSTICK_UNSAFE_RESUME is not set
CONFIG_MSPRO_BLOCK=y
# CONFIG_MS_BLOCK is not set
#
# MemoryStick Host Controller Drivers
#
# CONFIG_MEMSTICK_TIFM_MS is not set
# CONFIG_MEMSTICK_JMICRON_38X is not set
# CONFIG_MEMSTICK_R592 is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_INFINIBAND is not set
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_EDAC=y
CONFIG_EDAC_LEGACY_SYSFS=y
CONFIG_EDAC_DEBUG=y
CONFIG_EDAC_DECODE_MCE=y
CONFIG_EDAC_MM_EDAC=y
CONFIG_EDAC_AMD64=y
# CONFIG_EDAC_AMD64_ERROR_INJECTION is not set
# CONFIG_EDAC_E752X is not set
# CONFIG_EDAC_I82975X is not set
# CONFIG_EDAC_I3000 is not set
# CONFIG_EDAC_I3200 is not set
# CONFIG_EDAC_IE31200 is not set
# CONFIG_EDAC_X38 is not set
# CONFIG_EDAC_I5400 is not set
# CONFIG_EDAC_I5000 is not set
# CONFIG_EDAC_I5100 is not set
# CONFIG_EDAC_I7300 is not set
CONFIG_RTC_LIB=y
CONFIG_RTC_MC146818_LIB=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_HCTOSYS=y
CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
CONFIG_RTC_SYSTOHC=y
CONFIG_RTC_SYSTOHC_DEVICE="rtc0"
# CONFIG_RTC_DEBUG is not set
#
# RTC interfaces
#
CONFIG_RTC_INTF_SYSFS=y
CONFIG_RTC_INTF_PROC=y
CONFIG_RTC_INTF_DEV=y
# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
# CONFIG_RTC_DRV_TEST is not set
#
# I2C RTC drivers
#
# CONFIG_RTC_DRV_ABB5ZES3 is not set
# CONFIG_RTC_DRV_ABX80X is not set
# CONFIG_RTC_DRV_DS1307 is not set
# CONFIG_RTC_DRV_DS1374 is not set
# CONFIG_RTC_DRV_DS1672 is not set
# CONFIG_RTC_DRV_MAX6900 is not set
# CONFIG_RTC_DRV_RS5C372 is not set
# CONFIG_RTC_DRV_ISL1208 is not set
# CONFIG_RTC_DRV_ISL12022 is not set
# CONFIG_RTC_DRV_ISL12057 is not set
# CONFIG_RTC_DRV_X1205 is not set
# CONFIG_RTC_DRV_PCF8523 is not set
# CONFIG_RTC_DRV_PCF85063 is not set
# CONFIG_RTC_DRV_PCF8563 is not set
# CONFIG_RTC_DRV_PCF8583 is not set
# CONFIG_RTC_DRV_M41T80 is not set
# CONFIG_RTC_DRV_BQ32K is not set
# CONFIG_RTC_DRV_S35390A is not set
# CONFIG_RTC_DRV_FM3130 is not set
# CONFIG_RTC_DRV_RX8010 is not set
# CONFIG_RTC_DRV_RX8581 is not set
# CONFIG_RTC_DRV_RX8025 is not set
# CONFIG_RTC_DRV_EM3027 is not set
# CONFIG_RTC_DRV_RV8803 is not set
#
# SPI RTC drivers
#
CONFIG_RTC_I2C_AND_SPI=y
#
# SPI and I2C RTC drivers
#
# CONFIG_RTC_DRV_DS3232 is not set
# CONFIG_RTC_DRV_PCF2127 is not set
# CONFIG_RTC_DRV_RV3029C2 is not set
#
# Platform RTC drivers
#
CONFIG_RTC_DRV_CMOS=y
# CONFIG_RTC_DRV_DS1286 is not set
# CONFIG_RTC_DRV_DS1511 is not set
# CONFIG_RTC_DRV_DS1553 is not set
# CONFIG_RTC_DRV_DS1685_FAMILY is not set
# CONFIG_RTC_DRV_DS1742 is not set
# CONFIG_RTC_DRV_DS2404 is not set
# CONFIG_RTC_DRV_STK17TA8 is not set
# CONFIG_RTC_DRV_M48T86 is not set
# CONFIG_RTC_DRV_M48T35 is not set
# CONFIG_RTC_DRV_M48T59 is not set
# CONFIG_RTC_DRV_MSM6242 is not set
# CONFIG_RTC_DRV_BQ4802 is not set
# CONFIG_RTC_DRV_RP5C01 is not set
# CONFIG_RTC_DRV_V3020 is not set
#
# on-CPU RTC drivers
#
#
# HID Sensor RTC drivers
#
# CONFIG_RTC_DRV_HID_SENSOR_TIME is not set
CONFIG_DMADEVICES=y
CONFIG_DMADEVICES_DEBUG=y
CONFIG_DMADEVICES_VDEBUG=y
#
# DMA Devices
#
CONFIG_DMA_ACPI=y
# CONFIG_INTEL_IDMA64 is not set
# CONFIG_INTEL_IOATDMA is not set
# CONFIG_QCOM_HIDMA_MGMT is not set
# CONFIG_QCOM_HIDMA is not set
# CONFIG_DW_DMAC is not set
# CONFIG_DW_DMAC_PCI is not set
#
# DMABUF options
#
# CONFIG_SYNC_FILE is not set
# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set
# CONFIG_VFIO is not set
# CONFIG_VIRT_DRIVERS is not set
#
# Virtio drivers
#
# CONFIG_VIRTIO_PCI is not set
# CONFIG_VIRTIO_MMIO is not set
#
# Microsoft Hyper-V guest support
#
# CONFIG_STAGING is not set
# CONFIG_X86_PLATFORM_DEVICES is not set
# CONFIG_CHROME_PLATFORMS is not set
CONFIG_CLKDEV_LOOKUP=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_COMMON_CLK=y
#
# Common Clock Framework
#
# CONFIG_COMMON_CLK_SI5351 is not set
# CONFIG_COMMON_CLK_CDCE706 is not set
# CONFIG_COMMON_CLK_CS2000_CP is not set
# CONFIG_COMMON_CLK_NXP is not set
# CONFIG_COMMON_CLK_PXA is not set
# CONFIG_COMMON_CLK_PIC32 is not set
# CONFIG_SUNXI_CCU is not set
#
# Hardware Spinlock drivers
#
#
# Clock Source drivers
#
CONFIG_CLKEVT_I8253=y
CONFIG_CLKBLD_I8253=y
# CONFIG_ATMEL_PIT is not set
# CONFIG_SH_TIMER_CMT is not set
# CONFIG_SH_TIMER_MTU2 is not set
# CONFIG_SH_TIMER_TMU is not set
# CONFIG_EM_TIMER_STI is not set
# CONFIG_MAILBOX is not set
CONFIG_IOMMU_API=y
CONFIG_IOMMU_SUPPORT=y
#
# Generic IOMMU Pagetable Support
#
CONFIG_IOMMU_IOVA=y
CONFIG_AMD_IOMMU=y
CONFIG_AMD_IOMMU_V2=y
CONFIG_DMAR_TABLE=y
# CONFIG_INTEL_IOMMU is not set
CONFIG_IRQ_REMAP=y
#
# Remoteproc drivers
#
# CONFIG_STE_MODEM_RPROC is not set
#
# Rpmsg drivers
#
#
# SOC (System On Chip) specific Drivers
#
#
# Broadcom SoC drivers
#
# CONFIG_SUNXI_SRAM is not set
# CONFIG_SOC_TI is not set
# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
# CONFIG_NTB is not set
# CONFIG_VME_BUS is not set
# CONFIG_PWM is not set
CONFIG_ARM_GIC_MAX_NR=1
# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set
# CONFIG_FMC is not set
#
# PHY Subsystem
#
# CONFIG_GENERIC_PHY is not set
# CONFIG_PHY_PXA_28NM_HSIC is not set
# CONFIG_PHY_PXA_28NM_USB2 is not set
# CONFIG_BCM_KONA_USB2_PHY is not set
# CONFIG_POWERCAP is not set
# CONFIG_MCB is not set
#
# Performance monitor support
#
CONFIG_RAS=y
# CONFIG_MCE_AMD_INJ is not set
# CONFIG_THUNDERBOLT is not set
#
# Android
#
# CONFIG_ANDROID is not set
# CONFIG_LIBNVDIMM is not set
# CONFIG_DEV_DAX is not set
# CONFIG_NVMEM is not set
# CONFIG_STM is not set
# CONFIG_INTEL_TH is not set
#
# FPGA Configuration Support
#
# CONFIG_FPGA is not set
#
# Firmware Drivers
#
# CONFIG_EDD is not set
# CONFIG_FIRMWARE_MEMMAP is not set
# CONFIG_DELL_RBU is not set
# CONFIG_DCDBAS is not set
CONFIG_DMIID=y
# CONFIG_DMI_SYSFS is not set
CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
# CONFIG_ISCSI_IBFT_FIND is not set
# CONFIG_FW_CFG_SYSFS is not set
# CONFIG_GOOGLE_FIRMWARE is not set
CONFIG_UEFI_CPER=y
#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
# CONFIG_EXT2_FS is not set
# CONFIG_EXT3_FS is not set
CONFIG_EXT4_FS=y
# CONFIG_EXT4_USE_FOR_EXT2 is not set
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
CONFIG_EXT4_ENCRYPTION=y
CONFIG_EXT4_FS_ENCRYPTION=y
# CONFIG_EXT4_DEBUG is not set
CONFIG_JBD2=y
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_OCFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
# CONFIG_F2FS_FS is not set
# CONFIG_FS_DAX is not set
CONFIG_FS_POSIX_ACL=y
# CONFIG_EXPORTFS_BLOCK_OPS is not set
CONFIG_FILE_LOCKING=y
# CONFIG_MANDATORY_FILE_LOCKING is not set
CONFIG_FS_ENCRYPTION=y
CONFIG_FSNOTIFY=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY_USER=y
CONFIG_FANOTIFY=y
# CONFIG_FANOTIFY_ACCESS_PERMISSIONS is not set
# CONFIG_QUOTA is not set
# CONFIG_QUOTACTL is not set
# CONFIG_AUTOFS4_FS is not set
CONFIG_FUSE_FS=y
# CONFIG_CUSE is not set
# CONFIG_OVERLAY_FS is not set
#
# Caches
#
# CONFIG_FSCACHE is not set
#
# CD-ROM/DVD Filesystems
#
CONFIG_ISO9660_FS=y
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_UDF_FS=y
CONFIG_UDF_NLS=y
#
# DOS/FAT/NT Filesystems
#
CONFIG_FAT_FS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
CONFIG_FAT_DEFAULT_UTF8=y
CONFIG_NTFS_FS=y
# CONFIG_NTFS_DEBUG is not set
CONFIG_NTFS_RW=y
#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
# CONFIG_PROC_CHILDREN is not set
CONFIG_KERNFS=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_TMPFS_XATTR=y
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_CONFIGFS_FS=y
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_NETWORK_FILESYSTEMS=y
# CONFIG_NFS_FS is not set
# CONFIG_NFSD is not set
# CONFIG_CEPH_FS is not set
# CONFIG_CIFS is not set
# CONFIG_NCP_FS is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
CONFIG_NLS_CODEPAGE_437=y
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
CONFIG_NLS_ISO8859_15=y
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
# CONFIG_NLS_MAC_ROMAN is not set
# CONFIG_NLS_MAC_CELTIC is not set
# CONFIG_NLS_MAC_CENTEURO is not set
# CONFIG_NLS_MAC_CROATIAN is not set
# CONFIG_NLS_MAC_CYRILLIC is not set
# CONFIG_NLS_MAC_GAELIC is not set
# CONFIG_NLS_MAC_GREEK is not set
# CONFIG_NLS_MAC_ICELAND is not set
# CONFIG_NLS_MAC_INUIT is not set
# CONFIG_NLS_MAC_ROMANIAN is not set
# CONFIG_NLS_MAC_TURKISH is not set
CONFIG_NLS_UTF8=y
# CONFIG_DLM is not set
#
# Kernel hacking
#
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
#
# printk and dmesg options
#
# CONFIG_PRINTK_TIME is not set
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=5
CONFIG_BOOT_PRINTK_DELAY=y
# CONFIG_DYNAMIC_DEBUG is not set
#
# Compile-time checks and compiler options
#
CONFIG_DEBUG_INFO=y
# CONFIG_DEBUG_INFO_REDUCED is not set
# CONFIG_DEBUG_INFO_SPLIT is not set
# CONFIG_DEBUG_INFO_DWARF4 is not set
# CONFIG_GDB_SCRIPTS is not set
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_FRAME_WARN=1024
# CONFIG_STRIP_ASM_SYMS is not set
CONFIG_READABLE_ASM=y
# CONFIG_UNUSED_SYMBOLS is not set
CONFIG_PAGE_OWNER=y
CONFIG_DEBUG_FS=y
CONFIG_HEADERS_CHECK=y
# CONFIG_DEBUG_SECTION_MISMATCH is not set
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
CONFIG_ARCH_WANT_FRAME_POINTERS=y
CONFIG_FRAME_POINTER=y
CONFIG_STACK_VALIDATION=y
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# CONFIG_MAGIC_SYSRQ is not set
CONFIG_DEBUG_KERNEL=y
#
# Memory Debugging
#
CONFIG_PAGE_EXTENSION=y
CONFIG_DEBUG_PAGEALLOC=y
CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT=y
CONFIG_PAGE_POISONING=y
# CONFIG_PAGE_POISONING_NO_SANITY is not set
CONFIG_PAGE_POISONING_ZERO=y
# CONFIG_DEBUG_OBJECTS is not set
CONFIG_SLUB_DEBUG_ON=y
# CONFIG_SLUB_STATS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_VIRTUAL is not set
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_DEBUG_PER_CPU_MAPS=y
CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
CONFIG_DEBUG_STACKOVERFLOW=y
CONFIG_HAVE_ARCH_KMEMCHECK=y
# CONFIG_KMEMCHECK is not set
CONFIG_HAVE_ARCH_KASAN=y
CONFIG_KASAN=y
# CONFIG_KASAN_OUTLINE is not set
CONFIG_KASAN_INLINE=y
CONFIG_ARCH_HAS_KCOV=y
CONFIG_KCOV=y
CONFIG_KCOV_INSTRUMENT_ALL=y
CONFIG_DEBUG_SHIRQ=y
#
# Debug Lockups and Hangs
#
CONFIG_LOCKUP_DETECTOR=y
CONFIG_HARDLOCKUP_DETECTOR=y
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC_VALUE=1
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=1
CONFIG_DETECT_HUNG_TASK=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y
CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=1
CONFIG_WQ_WATCHDOG=y
CONFIG_PANIC_ON_OOPS=y
CONFIG_PANIC_ON_OOPS_VALUE=1
CONFIG_PANIC_TIMEOUT=0
# CONFIG_SCHED_DEBUG is not set
CONFIG_SCHED_INFO=y
# CONFIG_SCHEDSTATS is not set
CONFIG_SCHED_STACK_END_CHECK=y
CONFIG_DEBUG_TIMEKEEPING=y
# CONFIG_TIMER_STATS is not set
#
# Lock Debugging (spinlocks, mutexes, etc...)
#
CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_MUTEXES=y
# CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
# CONFIG_DEBUG_ATOMIC_SLEEP is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_LOCK_TORTURE_TEST is not set
CONFIG_STACKTRACE=y
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_PI_LIST is not set
# CONFIG_DEBUG_SG is not set
CONFIG_DEBUG_NOTIFIERS=y
CONFIG_DEBUG_CREDENTIALS=y
#
# RCU Debugging
#
# CONFIG_PROVE_RCU is not set
# CONFIG_SPARSE_RCU_POINTER is not set
# CONFIG_TORTURE_TEST is not set
# CONFIG_RCU_PERF_TEST is not set
# CONFIG_RCU_TORTURE_TEST is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=21
CONFIG_RCU_TRACE=y
CONFIG_RCU_EQS_DEBUG=y
# CONFIG_DEBUG_WQ_FORCE_RR_CPU is not set
# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
# CONFIG_NOTIFIER_ERROR_INJECTION is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_LATENCYTOP is not set
CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_FENTRY=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_TRACE_CLOCK=y
CONFIG_RING_BUFFER=y
CONFIG_RING_BUFFER_ALLOW_SWAP=y
CONFIG_TRACING_SUPPORT=y
# CONFIG_FTRACE is not set
#
# Runtime Testing
#
# CONFIG_LKDTM is not set
# CONFIG_TEST_LIST_SORT is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_RBTREE_TEST is not set
# CONFIG_ATOMIC64_SELFTEST is not set
# CONFIG_TEST_HEXDUMP is not set
# CONFIG_TEST_STRING_HELPERS is not set
# CONFIG_TEST_KSTRTOX is not set
# CONFIG_TEST_PRINTF is not set
# CONFIG_TEST_BITMAP is not set
# CONFIG_TEST_UUID is not set
# CONFIG_TEST_RHASHTABLE is not set
# CONFIG_TEST_HASH is not set
# CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
# CONFIG_BUILD_DOCSRC is not set
# CONFIG_DMA_API_DEBUG is not set
# CONFIG_TEST_FIRMWARE is not set
# CONFIG_TEST_UDELAY is not set
# CONFIG_MEMTEST is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
# CONFIG_UBSAN is not set
CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y
CONFIG_STRICT_DEVMEM=y
CONFIG_IO_STRICT_DEVMEM=y
CONFIG_X86_VERBOSE_BOOTUP=y
CONFIG_EARLY_PRINTK=y
# CONFIG_EARLY_PRINTK_DBGP is not set
CONFIG_X86_PTDUMP_CORE=y
# CONFIG_X86_PTDUMP is not set
CONFIG_DEBUG_RODATA_TEST=y
CONFIG_DEBUG_WX=y
CONFIG_DOUBLEFAULT=y
# CONFIG_DEBUG_TLBFLUSH is not set
# CONFIG_IOMMU_STRESS is not set
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
CONFIG_IO_DELAY_TYPE_0X80=0
CONFIG_IO_DELAY_TYPE_0XED=1
CONFIG_IO_DELAY_TYPE_UDELAY=2
CONFIG_IO_DELAY_TYPE_NONE=3
# CONFIG_IO_DELAY_0X80 is not set
# CONFIG_IO_DELAY_0XED is not set
# CONFIG_IO_DELAY_UDELAY is not set
CONFIG_IO_DELAY_NONE=y
CONFIG_DEFAULT_IO_DELAY_TYPE=3
CONFIG_DEBUG_BOOT_PARAMS=y
CONFIG_CPA_DEBUG=y
CONFIG_OPTIMIZE_INLINING=y
CONFIG_DEBUG_ENTRY=y
CONFIG_DEBUG_NMI_SELFTEST=y
CONFIG_X86_DEBUG_FPU=y
# CONFIG_PUNIT_ATOM_DEBUG is not set
#
# Security options
#
CONFIG_KEYS=y
CONFIG_PERSISTENT_KEYRINGS=y
# CONFIG_BIG_KEYS is not set
CONFIG_ENCRYPTED_KEYS=y
# CONFIG_KEY_DH_OPERATIONS is not set
CONFIG_SECURITY_DMESG_RESTRICT=y
CONFIG_SECURITY=y
# CONFIG_SECURITYFS is not set
CONFIG_SECURITY_NETWORK=y
CONFIG_SECURITY_NETWORK_XFRM=y
CONFIG_SECURITY_PATH=y
CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
CONFIG_HAVE_ARCH_HARDENED_USERCOPY=y
# CONFIG_HARDENED_USERCOPY is not set
# CONFIG_SECURITY_SELINUX is not set
# CONFIG_SECURITY_SMACK is not set
# CONFIG_SECURITY_TOMOYO is not set
# CONFIG_SECURITY_APPARMOR is not set
CONFIG_SECURITY_LOADPIN=y
# CONFIG_SECURITY_LOADPIN_ENABLED is not set
CONFIG_SECURITY_YAMA=y
CONFIG_INTEGRITY=y
CONFIG_INTEGRITY_SIGNATURE=y
CONFIG_INTEGRITY_ASYMMETRIC_KEYS=y
CONFIG_INTEGRITY_AUDIT=y
# CONFIG_IMA is not set
# CONFIG_EVM is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_DEFAULT_SECURITY=""
CONFIG_CRYPTO=y
#
# Crypto core or helper
#
CONFIG_CRYPTO_FIPS=y
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_BLKCIPHER=y
CONFIG_CRYPTO_BLKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_RNG_DEFAULT=y
CONFIG_CRYPTO_AKCIPHER2=y
CONFIG_CRYPTO_AKCIPHER=y
CONFIG_CRYPTO_KPP2=y
CONFIG_CRYPTO_RSA=y
# CONFIG_CRYPTO_DH is not set
# CONFIG_CRYPTO_ECDH is not set
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
# CONFIG_CRYPTO_USER is not set
# CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set
CONFIG_CRYPTO_GF128MUL=y
CONFIG_CRYPTO_NULL=y
CONFIG_CRYPTO_NULL2=y
CONFIG_CRYPTO_PCRYPT=y
CONFIG_CRYPTO_WORKQUEUE=y
# CONFIG_CRYPTO_CRYPTD is not set
# CONFIG_CRYPTO_MCRYPTD is not set
CONFIG_CRYPTO_AUTHENC=y
#
# Authenticated Encryption with Associated Data
#
CONFIG_CRYPTO_CCM=y
CONFIG_CRYPTO_GCM=y
# CONFIG_CRYPTO_CHACHA20POLY1305 is not set
CONFIG_CRYPTO_SEQIV=y
CONFIG_CRYPTO_ECHAINIV=y
#
# Block modes
#
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_CTR=y
CONFIG_CRYPTO_CTS=y
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_LRW=y
CONFIG_CRYPTO_PCBC=y
CONFIG_CRYPTO_XTS=y
CONFIG_CRYPTO_KEYWRAP=y
#
# Hash modes
#
CONFIG_CRYPTO_CMAC=y
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_XCBC=y
CONFIG_CRYPTO_VMAC=y
#
# Digest
#
CONFIG_CRYPTO_CRC32C=y
# CONFIG_CRYPTO_CRC32C_INTEL is not set
CONFIG_CRYPTO_CRC32=y
# CONFIG_CRYPTO_CRC32_PCLMUL is not set
CONFIG_CRYPTO_CRCT10DIF=y
# CONFIG_CRYPTO_CRCT10DIF_PCLMUL is not set
CONFIG_CRYPTO_GHASH=y
CONFIG_CRYPTO_POLY1305=y
# CONFIG_CRYPTO_POLY1305_X86_64 is not set
CONFIG_CRYPTO_MD4=y
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_MICHAEL_MIC=y
CONFIG_CRYPTO_RMD128=y
CONFIG_CRYPTO_RMD160=y
CONFIG_CRYPTO_RMD256=y
CONFIG_CRYPTO_RMD320=y
CONFIG_CRYPTO_SHA1=y
# CONFIG_CRYPTO_SHA1_SSSE3 is not set
# CONFIG_CRYPTO_SHA256_SSSE3 is not set
# CONFIG_CRYPTO_SHA512_SSSE3 is not set
# CONFIG_CRYPTO_SHA1_MB is not set
# CONFIG_CRYPTO_SHA256_MB is not set
# CONFIG_CRYPTO_SHA512_MB is not set
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=y
CONFIG_CRYPTO_SHA3=y
CONFIG_CRYPTO_TGR192=y
CONFIG_CRYPTO_WP512=y
# CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL is not set
#
# Ciphers
#
CONFIG_CRYPTO_AES=y
# CONFIG_CRYPTO_AES_X86_64 is not set
# CONFIG_CRYPTO_AES_NI_INTEL is not set
CONFIG_CRYPTO_ANUBIS=y
CONFIG_CRYPTO_ARC4=y
CONFIG_CRYPTO_BLOWFISH=y
CONFIG_CRYPTO_BLOWFISH_COMMON=y
# CONFIG_CRYPTO_BLOWFISH_X86_64 is not set
CONFIG_CRYPTO_CAMELLIA=y
# CONFIG_CRYPTO_CAMELLIA_X86_64 is not set
# CONFIG_CRYPTO_CAMELLIA_AESNI_AVX_X86_64 is not set
# CONFIG_CRYPTO_CAMELLIA_AESNI_AVX2_X86_64 is not set
CONFIG_CRYPTO_CAST_COMMON=y
CONFIG_CRYPTO_CAST5=y
# CONFIG_CRYPTO_CAST5_AVX_X86_64 is not set
CONFIG_CRYPTO_CAST6=y
# CONFIG_CRYPTO_CAST6_AVX_X86_64 is not set
CONFIG_CRYPTO_DES=y
# CONFIG_CRYPTO_DES3_EDE_X86_64 is not set
CONFIG_CRYPTO_FCRYPT=y
CONFIG_CRYPTO_KHAZAD=y
CONFIG_CRYPTO_SALSA20=y
# CONFIG_CRYPTO_SALSA20_X86_64 is not set
CONFIG_CRYPTO_CHACHA20=y
# CONFIG_CRYPTO_CHACHA20_X86_64 is not set
CONFIG_CRYPTO_SEED=y
CONFIG_CRYPTO_SERPENT=y
# CONFIG_CRYPTO_SERPENT_SSE2_X86_64 is not set
# CONFIG_CRYPTO_SERPENT_AVX_X86_64 is not set
# CONFIG_CRYPTO_SERPENT_AVX2_X86_64 is not set
CONFIG_CRYPTO_TEA=y
CONFIG_CRYPTO_TWOFISH=y
CONFIG_CRYPTO_TWOFISH_COMMON=y
# CONFIG_CRYPTO_TWOFISH_X86_64 is not set
# CONFIG_CRYPTO_TWOFISH_X86_64_3WAY is not set
# CONFIG_CRYPTO_TWOFISH_AVX_X86_64 is not set
#
# Compression
#
CONFIG_CRYPTO_DEFLATE=y
CONFIG_CRYPTO_LZO=y
CONFIG_CRYPTO_842=y
CONFIG_CRYPTO_LZ4=y
CONFIG_CRYPTO_LZ4HC=y
#
# Random Number Generation
#
CONFIG_CRYPTO_ANSI_CPRNG=y
CONFIG_CRYPTO_DRBG_MENU=y
CONFIG_CRYPTO_DRBG_HMAC=y
CONFIG_CRYPTO_DRBG_HASH=y
CONFIG_CRYPTO_DRBG_CTR=y
CONFIG_CRYPTO_DRBG=y
CONFIG_CRYPTO_JITTERENTROPY=y
# CONFIG_CRYPTO_USER_API_HASH is not set
# CONFIG_CRYPTO_USER_API_SKCIPHER is not set
# CONFIG_CRYPTO_USER_API_RNG is not set
# CONFIG_CRYPTO_USER_API_AEAD is not set
CONFIG_CRYPTO_HASH_INFO=y
# CONFIG_CRYPTO_HW is not set
CONFIG_ASYMMETRIC_KEY_TYPE=y
CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=y
CONFIG_X509_CERTIFICATE_PARSER=y
CONFIG_PKCS7_MESSAGE_PARSER=y
#
# Certificates for signature checking
#
# CONFIG_SYSTEM_TRUSTED_KEYRING is not set
CONFIG_HAVE_KVM=y
# CONFIG_VIRTUALIZATION is not set
# CONFIG_BINARY_PRINTF is not set
#
# Library routines
#
CONFIG_BITREVERSE=y
# CONFIG_HAVE_ARCH_BITREVERSE is not set
CONFIG_RATIONAL=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_NET_UTILS=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_IOMAP=y
CONFIG_GENERIC_IO=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
# CONFIG_CRC_CCITT is not set
CONFIG_CRC16=y
CONFIG_CRC_T10DIF=y
CONFIG_CRC_ITU_T=y
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC7 is not set
CONFIG_LIBCRC32C=y
# CONFIG_CRC8 is not set
# CONFIG_AUDIT_ARCH_COMPAT_GENERIC is not set
CONFIG_RANDOM32_SELFTEST=y
CONFIG_842_COMPRESS=y
CONFIG_842_DECOMPRESS=y
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_LZ4_COMPRESS=y
CONFIG_LZ4HC_COMPRESS=y
CONFIG_LZ4_DECOMPRESS=y
CONFIG_XZ_DEC=y
CONFIG_XZ_DEC_X86=y
# CONFIG_XZ_DEC_POWERPC is not set
# CONFIG_XZ_DEC_IA64 is not set
# CONFIG_XZ_DEC_ARM is not set
# CONFIG_XZ_DEC_ARMTHUMB is not set
# CONFIG_XZ_DEC_SPARC is not set
CONFIG_XZ_DEC_BCJ=y
# CONFIG_XZ_DEC_TEST is not set
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_INTERVAL_TREE=y
CONFIG_RADIX_TREE_MULTIORDER=y
CONFIG_ASSOCIATIVE_ARRAY=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAS_DMA=y
CONFIG_CPUMASK_OFFSTACK=y
CONFIG_CPU_RMAP=y
CONFIG_DQL=y
CONFIG_GLOB=y
# CONFIG_GLOB_SELFTEST is not set
CONFIG_NLATTR=y
CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
CONFIG_CLZ_TAB=y
# CONFIG_CORDIC is not set
# CONFIG_DDR is not set
CONFIG_IRQ_POLL=y
CONFIG_MPILIB=y
CONFIG_SIGNATURE=y
CONFIG_OID_REGISTRY=y
CONFIG_FONT_SUPPORT=y
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
# CONFIG_SG_SPLIT is not set
CONFIG_SG_POOL=y
CONFIG_ARCH_HAS_SG_CHAIN=y
CONFIG_ARCH_HAS_PMEM_API=y
CONFIG_ARCH_HAS_MMIO_FLUSH=y
CONFIG_STACKDEPOT=y
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2016-09-15 4:02 rcu_sched self-detected stall on CPU NTU
@ 2016-09-15 6:22 ` Mike Galbraith
2016-09-15 17:15 ` NTU
0 siblings, 1 reply; 50+ messages in thread
From: Mike Galbraith @ 2016-09-15 6:22 UTC (permalink / raw)
To: NTU, linux-kernel
On Wed, 2016-09-14 at 23:02 -0500, NTU wrote:
> [ 26.542980] Call Trace:
> [ 26.542983] [<ffffffffa7fbd7c1>] ? 0xffffffffa7fbd7c1
> [ 26.542985] [<ffffffffa7f17d35>] ? 0xffffffffa7f17d35
> [ 26.542986] [<ffffffffa796c115>] ? 0xffffffffa796c115
> [ 26.542988] [<ffffffffa7633d86>] ? 0xffffffffa7633d86
> [ 26.542989] [<ffffffffa796c0a6>] ? 0xffffffffa796c0a6
...
The stack trace is useless without symbols.
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2016-09-15 6:22 ` Mike Galbraith
@ 2016-09-15 17:15 ` NTU
2016-09-20 14:34 ` NTU
0 siblings, 1 reply; 50+ messages in thread
From: NTU @ 2016-09-15 17:15 UTC (permalink / raw)
To: linux-kernel
[-- Attachment #1: Type: text/plain, Size: 538 bytes --]
Sorry!!
Alec Ari
On Thu, Sep 15, 2016 at 1:22 AM, Mike Galbraith
<umgwanakikbuti@gmail.com> wrote:
> On Wed, 2016-09-14 at 23:02 -0500, NTU wrote:
>> [ 26.542980] Call Trace:
>> [ 26.542983] [<ffffffffa7fbd7c1>] ? 0xffffffffa7fbd7c1
>> [ 26.542985] [<ffffffffa7f17d35>] ? 0xffffffffa7f17d35
>> [ 26.542986] [<ffffffffa796c115>] ? 0xffffffffa796c115
>> [ 26.542988] [<ffffffffa7633d86>] ? 0xffffffffa7633d86
>> [ 26.542989] [<ffffffffa796c0a6>] ? 0xffffffffa796c0a6
> ...
>
> The stack trace is useless without symbols.
[-- Attachment #2: dmesg_trace_sym.txt --]
[-- Type: text/plain, Size: 2922 bytes --]
[ 5.094204] debug: unmapping init [mem 0xffffffffb2717000-0xffffffffb284dfff]
[ 5.098544] Write protecting the kernel read-only data: 32768k
[ 5.103870] Testing CPA: undo ffffffffb0400000-ffffffffb2400000
[ 5.109293] Testing CPA: again
[ 5.114695] debug: unmapping init [mem 0xffff880262881000-0xffff8802629fffff]
[ 5.119041] debug: unmapping init [mem 0xffff880262f30000-0xffff880262ffffff]
[ 26.098243] INFO: rcu_sched self-detected stall on CPU
[ 26.102209] 0-...: (20984 ticks this GP) idle=e5d/140000000000001/0 softirq=196/196 fqs=5248
[ 26.106247] (t=21000 jiffies g=-219 c=-220 q=12)
[ 26.110323] Task dump for CPU 0:
[ 26.114397] swapper/0 R running task 0 1 0 0x00000008
[ 26.118502] ffffffffb2463020 0000000074ef7c0c ffff8803ace07c98 ffffffffb050d416
[ 26.122620] 0000000000000006 0000000000000010 0000000041b58ab3 ffffffffb22d8e95
[ 26.126749] ffffffffb050d1f0 ffff8803ace07d30 ffffffffb0d59b59 000000000000000f
[ 26.130922] Call Trace:
[ 26.135064] <IRQ> [<ffffffffb050d416>] sched_show_task+0x226/0x380
[ 26.139255] [<ffffffffb050d1f0>] ? SyS_sched_rr_get_interval+0x250/0x250
[ 26.143423] [<ffffffffb0d59b59>] ? _find_next_bit+0xe9/0x120
[ 26.147605] [<ffffffffb0514f41>] dump_cpu_task+0x71/0x90
[ 26.151766] [<ffffffffb1c60a15>] rcu_dump_cpu_stacks+0x180/0x1a6
[ 26.155944] [<ffffffffb0594576>] rcu_check_callbacks+0x1706/0x17f0
[ 26.160166] [<ffffffffb062662f>] ? __acct_update_integrals+0x21f/0x2a0
[ 26.164410] [<ffffffffb059e6c0>] update_process_times+0x30/0x60
[ 26.168622] [<ffffffffb05c8533>] tick_sched_timer+0xb3/0x420
[ 26.172808] [<ffffffffb05c8480>] ? tick_init_highres+0x20/0x20
[ 26.177013] [<ffffffffb059f52e>] __hrtimer_run_queues+0x25e/0x4e0
[ 26.181207] [<ffffffffb05a11dc>] hrtimer_interrupt+0x17c/0x450
[ 26.185436] [<ffffffffb1c7d8ef>] smp_trace_apic_timer_interrupt+0xdf/0x140
[ 26.189679] [<ffffffffb1c7d959>] smp_apic_timer_interrupt+0x9/0xb
[ 26.193895] [<ffffffffb1c7d19c>] apic_timer_interrupt+0x7c/0x90
[ 26.198079] <EOI> [<ffffffffb0493640>] ? ptdump_walk_pgd_level_core+0x4b0/0x710
[ 26.202346] [<ffffffffb0493190>] ? note_page+0x1790/0x1790
[ 26.206594] [<ffffffffb0485a64>] ? set_memory_np+0x34/0x40
[ 26.210890] [<ffffffffb04938e7>] ptdump_walk_pgd_level_checkwx+0x17/0x20
[ 26.215212] [<ffffffffb04788ef>] mark_rodata_ro+0x1cf/0x230
[ 26.219534] [<ffffffffb1c6b114>] kernel_init+0x34/0x180
[ 26.223866] [<ffffffffb1c7c00f>] ret_from_fork+0x1f/0x40
[ 26.228146] [<ffffffffb1c6b0e0>] ? rest_init+0xa0/0xa0
[ 32.053216] CPA self-test:
[ 32.258851] 4k 4187648 large 0 gb 0 x 1837[ffff880000099000-ffff880100000000] miss 268800
[ 32.467012] 4k 4187648 large 0 gb 0 x 1837[ffff880000099000-ffff880100000000] miss 268800
[ 32.673716] 4k 4187648 large 0 gb 0 x 1837[ffff880000099000-ffff880100000000] miss 268800
[ 32.678052] ok.
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2016-09-15 17:15 ` NTU
@ 2016-09-20 14:34 ` NTU
0 siblings, 0 replies; 50+ messages in thread
From: NTU @ 2016-09-20 14:34 UTC (permalink / raw)
To: linux-kernel
[-- Attachment #1: Type: text/plain, Size: 920 bytes --]
Well this time I got a lot more symbols for you guys! I didn't change
anything except reboot a couple times. Log is attached. I don't debug
symbols often (never done it with kernel code before) but I'll give it
a shot with gdb and report back, I'll be glad to help solve this
issue.
Alec Ari
On Thu, Sep 15, 2016 at 12:15 PM, NTU <neotheuser@gmail.com> wrote:
> Sorry!!
>
> Alec Ari
>
> On Thu, Sep 15, 2016 at 1:22 AM, Mike Galbraith
> <umgwanakikbuti@gmail.com> wrote:
>> On Wed, 2016-09-14 at 23:02 -0500, NTU wrote:
>>> [ 26.542980] Call Trace:
>>> [ 26.542983] [<ffffffffa7fbd7c1>] ? 0xffffffffa7fbd7c1
>>> [ 26.542985] [<ffffffffa7f17d35>] ? 0xffffffffa7f17d35
>>> [ 26.542986] [<ffffffffa796c115>] ? 0xffffffffa796c115
>>> [ 26.542988] [<ffffffffa7633d86>] ? 0xffffffffa7633d86
>>> [ 26.542989] [<ffffffffa796c0a6>] ? 0xffffffffa796c0a6
>> ...
>>
>> The stack trace is useless without symbols.
[-- Attachment #2: stall_second.txt --]
[-- Type: text/plain, Size: 8886 bytes --]
[ 25.304576] INFO: rcu_sched self-detected stall on CPU
[ 25.305585] INFO: rcu_sched detected stalls on CPUs/tasks:
[ 25.305595] 3-...: (20987 ticks this GP) idle=943/140000000000001/0 softirq=146/146 fqs=5170
[ 25.305599] (detected by 1, t=21002 jiffies, g=-222, c=-223, q=6)
[ 25.305600] Task dump for CPU 3:
[ 25.305604] swapper/0 R running task 0 1 0 0x00000008
[ 25.305609] 0000000000000003 ffff8803a4bef228 0000000000015120 ffff8803a4be4780
[ 25.305613] ffffffffa0e0e600 0000000000000297 0000000000000000 0000000000000297
[ 25.305616] ffff88039dd91ed0 0000000000085d8c ffff8803a4bef220 0000000000000297
[ 25.305617] Call Trace:
[ 25.305626] [<ffffffff9fdbfe01>] ? depot_save_stack+0x181/0x610
[ 25.305630] [<ffffffff9fd1a205>] ? free_cpumask_var+0x15/0x20
[ 25.305635] [<ffffffff9f76e495>] ? save_stack+0xb5/0xd0
[ 25.305638] [<ffffffff9f433d86>] ? save_stack_trace+0x26/0x50
[ 25.305641] [<ffffffff9f76e426>] ? save_stack+0x46/0xd0
[ 25.305644] [<ffffffff9f76eae1>] ? kasan_slab_free+0x71/0xb0
[ 25.305646] [<ffffffff9f76c950>] ? kfree+0x80/0x140
[ 25.305649] [<ffffffff9fd1a205>] ? free_cpumask_var+0x15/0x20
[ 25.305653] [<ffffffff9f457b6e>] ? native_send_call_func_ipi+0x19e/0x3e0
[ 25.305657] [<ffffffff9f5d308f>] ? smp_call_function_many+0x51f/0x900
[ 25.305660] [<ffffffff9f5d3521>] ? on_each_cpu+0x31/0x50
[ 25.305664] [<ffffffff9f48e4a7>] ? flush_tlb_all+0x17/0x20
[ 25.305667] [<ffffffff9f480be2>] ? __change_page_attr_set_clr+0x4a2/0x2340
[ 25.305670] [<ffffffff9f481d85>] ? __change_page_attr_set_clr+0x1645/0x2340
[ 25.305673] [<ffffffff9f482db6>] ? change_page_attr_set_clr+0x336/0xa60
[ 25.305676] [<ffffffff9f485a64>] ? set_memory_np+0x34/0x40
[ 25.305679] [<ffffffff9f4773d2>] ? free_init_pages+0x122/0x130
[ 25.305682] [<ffffffff9f4788ea>] ? mark_rodata_ro+0x1ca/0x230
[ 25.305685] [<ffffffffa0c6b114>] ? kernel_init+0x34/0x180
[ 25.305688] [<ffffffffa0c7c00f>] ? ret_from_fork+0x1f/0x40
[ 25.305691] [<ffffffff9f76a08a>] ? alloc_debug_processing+0x5a/0x1b0
[ 25.305694] [<ffffffff9f76b06e>] ? ___slab_alloc.constprop.58+0x2de/0x420
[ 25.305697] [<ffffffff9fd1a0ce>] ? alloc_cpumask_var_node+0x5e/0xf0
[ 25.305700] [<ffffffff9f76e536>] ? kasan_unpoison_shadow+0x36/0x50
[ 25.305703] [<ffffffff9f76e536>] ? kasan_unpoison_shadow+0x36/0x50
[ 25.305706] [<ffffffff9fd4a3d8>] ? __bitmap_weight+0xd8/0x160
[ 25.305709] [<ffffffff9f76eaf7>] ? kasan_slab_free+0x87/0xb0
[ 25.305711] [<ffffffff9f76c950>] ? kfree+0x80/0x140
[ 25.305714] [<ffffffff9fd1a205>] ? free_cpumask_var+0x15/0x20
[ 25.305718] [<ffffffff9f457b6e>] ? native_send_call_func_ipi+0x19e/0x3e0
[ 25.305721] [<ffffffff9f4579d0>] ? native_smp_send_reschedule+0x110/0x110
[ 25.305724] [<ffffffff9fd59b59>] ? _find_next_bit+0xe9/0x120
[ 25.305726] [<ffffffff9fd59bb7>] ? find_next_bit+0x27/0x30
[ 25.305730] [<ffffffff9f5d2c08>] ? smp_call_function_many+0x98/0x900
[ 25.305733] [<ffffffff9f48d3a0>] ? flush_tlb_func+0x130/0x130
[ 25.305736] [<ffffffff9f47fd4d>] ? lookup_address_in_pgd+0x32d/0x440
[ 25.305739] [<ffffffff9f47fd4d>] ? lookup_address_in_pgd+0x32d/0x440
[ 25.305742] [<ffffffff9f480f67>] ? __change_page_attr_set_clr+0x827/0x2340
[ 25.305745] [<ffffffff9f480740>] ? print_split+0x830/0x830
[ 25.305748] [<ffffffff9fe7a688>] ? bitfill_aligned+0x148/0x1a0
[ 25.305751] [<ffffffff9f420446>] ? print_context_stack+0x76/0xe0
[ 25.305755] [<ffffffff9f420446>] ? print_context_stack+0x76/0xe0
[ 25.305758] [<ffffffff9fdbfe01>] ? depot_save_stack+0x181/0x610
[ 25.305761] [<ffffffff9fd1a205>] ? free_cpumask_var+0x15/0x20
[ 25.305763] [<ffffffff9f76e495>] ? save_stack+0xb5/0xd0
[ 25.305766] [<ffffffff9f433d86>] ? save_stack_trace+0x26/0x50
[ 25.305769] [<ffffffff9f76e426>] ? save_stack+0x46/0xd0
[ 25.305771] [<ffffffff9f76eae1>] ? kasan_slab_free+0x71/0xb0
[ 25.305774] [<ffffffff9f76c950>] ? kfree+0x80/0x140
[ 25.305777] [<ffffffff9fd1a205>] ? free_cpumask_var+0x15/0x20
[ 25.305780] [<ffffffff9f457b6e>] ? native_send_call_func_ipi+0x19e/0x3e0
[ 25.305783] [<ffffffff9f5d308f>] ? smp_call_function_many+0x51f/0x900
[ 25.305786] [<ffffffff9f5d3521>] ? on_each_cpu+0x31/0x50
[ 25.305789] [<ffffffff9f483219>] ? change_page_attr_set_clr+0x799/0xa60
[ 25.305792] [<ffffffff9f485a64>] ? set_memory_np+0x34/0x40
[ 25.305795] [<ffffffff9f4773d2>] ? free_init_pages+0x122/0x130
[ 25.305797] [<ffffffff9f4788ea>] ? mark_rodata_ro+0x1ca/0x230
[ 25.305800] [<ffffffffa0c6b114>] ? kernel_init+0x34/0x180
[ 25.305803] [<ffffffffa0c7c00f>] ? ret_from_fork+0x1f/0x40
[ 25.305805] [<ffffffff9f76ab2f>] ? deactivate_slab+0x34f/0x3c0
[ 25.305808] [<ffffffff9f76a08a>] ? alloc_debug_processing+0x5a/0x1b0
[ 25.305811] [<ffffffff9f76b06e>] ? ___slab_alloc.constprop.58+0x2de/0x420
[ 25.305814] [<ffffffff9fd1a0ce>] ? alloc_cpumask_var_node+0x5e/0xf0
[ 25.305817] [<ffffffff9f76e536>] ? kasan_unpoison_shadow+0x36/0x50
[ 25.305820] [<ffffffff9f76e536>] ? kasan_unpoison_shadow+0x36/0x50
[ 25.305823] [<ffffffff9fd4a3d8>] ? __bitmap_weight+0xd8/0x160
[ 25.305826] [<ffffffff9f76eaf7>] ? kasan_slab_free+0x87/0xb0
[ 25.305828] [<ffffffff9f76c950>] ? kfree+0x80/0x140
[ 25.305831] [<ffffffff9fd1a205>] ? free_cpumask_var+0x15/0x20
[ 25.305834] [<ffffffff9f457b6e>] ? native_send_call_func_ipi+0x19e/0x3e0
[ 25.305837] [<ffffffff9f4579d0>] ? native_smp_send_reschedule+0x110/0x110
[ 25.305840] [<ffffffff9fd59b59>] ? _find_next_bit+0xe9/0x120
[ 25.305843] [<ffffffff9fd59bb7>] ? find_next_bit+0x27/0x30
[ 25.305846] [<ffffffff9f5d2c08>] ? smp_call_function_many+0x98/0x900
[ 25.305849] [<ffffffff9f492948>] ? note_page+0xf48/0x1790
[ 25.305853] [<ffffffff9f493639>] ? ptdump_walk_pgd_level_core+0x4a9/0x710
[ 25.305856] [<ffffffff9f493190>] ? note_page+0x1790/0x1790
[ 25.305858] [<ffffffff9f485a64>] ? set_memory_np+0x34/0x40
[ 25.305862] [<ffffffff9f4938e7>] ? ptdump_walk_pgd_level_checkwx+0x17/0x20
[ 25.305865] [<ffffffff9f4788ef>] ? mark_rodata_ro+0x1cf/0x230
[ 25.305867] [<ffffffffa0c6b114>] ? kernel_init+0x34/0x180
[ 25.305870] [<ffffffffa0c7c00f>] ? ret_from_fork+0x1f/0x40
[ 25.305873] [<ffffffffa0c6b0e0>] ? rest_init+0xa0/0xa0
[ 25.614915] 3-...: (20987 ticks this GP) idle=943/140000000000001/0 softirq=146/146 fqs=5247
[ 25.617229] (t=21313 jiffies g=-222 c=-223 q=6)
[ 25.619552] Task dump for CPU 3:
[ 25.621852] swapper/0 R running task 0 1 0 0x00000008
[ 25.624211] ffffffffa1463020 000000003fbfb87f ffff8803acf87c98 ffffffff9f50d416
[ 25.626592] 0000000000000006 0000000000000010 0000000041b58ab3 ffffffffa12d8e95
[ 25.628989] ffffffff9f50d1f0 ffff8803acf87d30 ffffffff9fd59b59 0000000000000008
[ 25.631408] Call Trace:
[ 25.633840] <IRQ> [<ffffffff9f50d416>] sched_show_task+0x226/0x380
[ 25.636338] [<ffffffff9f50d1f0>] ? SyS_sched_rr_get_interval+0x250/0x250
[ 25.638860] [<ffffffff9fd59b59>] ? _find_next_bit+0xe9/0x120
[ 25.641381] [<ffffffff9f514f41>] dump_cpu_task+0x71/0x90
[ 25.643903] [<ffffffffa0c60a15>] rcu_dump_cpu_stacks+0x180/0x1a6
[ 25.646435] [<ffffffff9f594576>] rcu_check_callbacks+0x1706/0x17f0
[ 25.648966] [<ffffffff9f62662f>] ? __acct_update_integrals+0x21f/0x2a0
[ 25.651491] [<ffffffff9f59e6c0>] update_process_times+0x30/0x60
[ 25.654018] [<ffffffff9f5c8533>] tick_sched_timer+0xb3/0x420
[ 25.656541] [<ffffffff9f59edb3>] ? __remove_hrtimer+0x73/0x180
[ 25.659059] [<ffffffff9f5c8480>] ? tick_init_highres+0x20/0x20
[ 25.661571] [<ffffffff9f59f52e>] __hrtimer_run_queues+0x25e/0x4e0
[ 25.664128] [<ffffffff9f5a11dc>] hrtimer_interrupt+0x17c/0x450
[ 25.666664] [<ffffffffa0c7d8ef>] smp_trace_apic_timer_interrupt+0xdf/0x140
[ 25.669241] [<ffffffffa0c7d959>] smp_apic_timer_interrupt+0x9/0xb
[ 25.671793] [<ffffffffa0c7d19c>] apic_timer_interrupt+0x7c/0x90
[ 25.674336] <EOI> [<ffffffff9f492948>] ? note_page+0xf48/0x1790
[ 25.676946] [<ffffffff9f493639>] ptdump_walk_pgd_level_core+0x4a9/0x710
[ 25.679576] [<ffffffff9f493190>] ? note_page+0x1790/0x1790
[ 25.682197] [<ffffffff9f485a64>] ? set_memory_np+0x34/0x40
[ 25.684813] [<ffffffff9f4938e7>] ptdump_walk_pgd_level_checkwx+0x17/0x20
[ 25.687463] [<ffffffff9f4788ef>] mark_rodata_ro+0x1cf/0x230
[ 25.690119] [<ffffffffa0c6b114>] kernel_init+0x34/0x180
[ 25.692779] [<ffffffffa0c7c00f>] ret_from_fork+0x1f/0x40
[ 25.695445] [<ffffffffa0c6b0e0>] ? rest_init+0xa0/0xa0
[ 32.049408] CPA self-test:
[ 32.253030] 4k 4187648 large 0 gb 0 x 1837[ffff880000099000-ffff880100000000] miss 268800
[ 32.457951] 4k 4187648 large 0 gb 0 x 1837[ffff880000099000-ffff880100000000] miss 268800
[ 32.662578] 4k 4187648 large 0 gb 0 x 1837[ffff880000099000-ffff880100000000] miss 268800
[ 32.665359] ok.
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-12 6:53 ` Michael Ellerman
@ 2022-04-12 13:36 ` Paul E. McKenney
-1 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-12 13:36 UTC (permalink / raw)
To: Michael Ellerman
Cc: Zhouyi Zhou, rcu, Miguel Ojeda, linuxppc-dev, Nicholas Piggin
On Tue, Apr 12, 2022 at 04:53:06PM +1000, Michael Ellerman wrote:
> "Paul E. McKenney" <paulmck@kernel.org> writes:
> > On Sun, Apr 10, 2022 at 09:33:43PM +1000, Michael Ellerman wrote:
> >> Zhouyi Zhou <zhouzhouyi@gmail.com> writes:
> >> > On Fri, Apr 8, 2022 at 10:07 PM Paul E. McKenney <paulmck@kernel.org> wrote:
> >> >> On Fri, Apr 08, 2022 at 06:02:19PM +0800, Zhouyi Zhou wrote:
> >> >> > On Fri, Apr 8, 2022 at 3:23 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
> >> ...
> >> >> > > I haven't seen it in my testing. But using Miguel's config I can
> >> >> > > reproduce it seemingly on every boot.
> >> >> > >
> >> >> > > For me it bisects to:
> >> >> > >
> >> >> > > 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
> >> >> > >
> >> >> > > Which seems plausible.
> >> >> > I also bisect to 35de589cb879 ("powerpc/time: improve decrementer
> >> >> > clockevent processing")
> >> ...
> >> >>
> >> >> > > Reverting that on mainline makes the bug go away.
> >>
> >> >> > I also revert that on the mainline, and am currently doing a pressure
> >> >> > test (by repeatedly invoking qemu and checking the console.log) on PPC
> >> >> > VM in Oregon State University.
> >>
> >> > After 306 rounds of stress test on mainline without triggering the bug
> >> > (last for 4 hours and 27 minutes), I think the bug is indeed caused by
> >> > 35de589cb879 ("powerpc/time: improve decrementer clockevent
> >> > processing") and stop the test for now.
> >>
> >> Thanks for testing, that's pretty conclusive.
> >>
> >> I'm not inclined to actually revert it yet.
> >>
> >> We need to understand if there's actually a bug in the patch, or if it's
> >> just exposing some existing bug/bad behavior we have. The fact that it
> >> only appears with CONFIG_HIGH_RES_TIMERS=n is suspicious.
> >>
> >> Do we have some code that inadvertently relies on something enabled by
> >> HIGH_RES_TIMERS=y, or do we have a bug that is hidden by HIGH_RES_TIMERS=y ?
> >
> > For whatever it is worth, moderate rcutorture runs to completion without
> > errors with CONFIG_HIGH_RES_TIMERS=n on 64-bit x86.
>
> Thanks for testing that, I don't have any big x86 machines to test on :)
>
> > Also for whatever it is worth, I don't know of anything other than
> > microcontrollers or the larger IoT devices that would want their kernels
> > built with CONFIG_HIGH_RES_TIMERS=n. Which might be a failure of
> > imagination on my part, but so it goes.
>
> Yeah I agree, like I said before I wasn't even aware you could turn it
> off. So I think we'll definitely add a select HIGH_RES_TIMERS in future,
> but first I need to work out why we are seeing stalls with it disabled.
Good point, and fair enough!
Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-12 13:36 ` Paul E. McKenney
0 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-12 13:36 UTC (permalink / raw)
To: Michael Ellerman
Cc: rcu, Zhouyi Zhou, linuxppc-dev, Nicholas Piggin, Miguel Ojeda
On Tue, Apr 12, 2022 at 04:53:06PM +1000, Michael Ellerman wrote:
> "Paul E. McKenney" <paulmck@kernel.org> writes:
> > On Sun, Apr 10, 2022 at 09:33:43PM +1000, Michael Ellerman wrote:
> >> Zhouyi Zhou <zhouzhouyi@gmail.com> writes:
> >> > On Fri, Apr 8, 2022 at 10:07 PM Paul E. McKenney <paulmck@kernel.org> wrote:
> >> >> On Fri, Apr 08, 2022 at 06:02:19PM +0800, Zhouyi Zhou wrote:
> >> >> > On Fri, Apr 8, 2022 at 3:23 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
> >> ...
> >> >> > > I haven't seen it in my testing. But using Miguel's config I can
> >> >> > > reproduce it seemingly on every boot.
> >> >> > >
> >> >> > > For me it bisects to:
> >> >> > >
> >> >> > > 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
> >> >> > >
> >> >> > > Which seems plausible.
> >> >> > I also bisect to 35de589cb879 ("powerpc/time: improve decrementer
> >> >> > clockevent processing")
> >> ...
> >> >>
> >> >> > > Reverting that on mainline makes the bug go away.
> >>
> >> >> > I also revert that on the mainline, and am currently doing a pressure
> >> >> > test (by repeatedly invoking qemu and checking the console.log) on PPC
> >> >> > VM in Oregon State University.
> >>
> >> > After 306 rounds of stress test on mainline without triggering the bug
> >> > (last for 4 hours and 27 minutes), I think the bug is indeed caused by
> >> > 35de589cb879 ("powerpc/time: improve decrementer clockevent
> >> > processing") and stop the test for now.
> >>
> >> Thanks for testing, that's pretty conclusive.
> >>
> >> I'm not inclined to actually revert it yet.
> >>
> >> We need to understand if there's actually a bug in the patch, or if it's
> >> just exposing some existing bug/bad behavior we have. The fact that it
> >> only appears with CONFIG_HIGH_RES_TIMERS=n is suspicious.
> >>
> >> Do we have some code that inadvertently relies on something enabled by
> >> HIGH_RES_TIMERS=y, or do we have a bug that is hidden by HIGH_RES_TIMERS=y ?
> >
> > For whatever it is worth, moderate rcutorture runs to completion without
> > errors with CONFIG_HIGH_RES_TIMERS=n on 64-bit x86.
>
> Thanks for testing that, I don't have any big x86 machines to test on :)
>
> > Also for whatever it is worth, I don't know of anything other than
> > microcontrollers or the larger IoT devices that would want their kernels
> > built with CONFIG_HIGH_RES_TIMERS=n. Which might be a failure of
> > imagination on my part, but so it goes.
>
> Yeah I agree, like I said before I wasn't even aware you could turn it
> off. So I think we'll definitely add a select HIGH_RES_TIMERS in future,
> but first I need to work out why we are seeing stalls with it disabled.
Good point, and fair enough!
Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-11 3:05 ` Paul E. McKenney
@ 2022-04-12 6:53 ` Michael Ellerman
-1 siblings, 0 replies; 50+ messages in thread
From: Michael Ellerman @ 2022-04-12 6:53 UTC (permalink / raw)
To: paulmck; +Cc: rcu, Zhouyi Zhou, linuxppc-dev, Nicholas Piggin, Miguel Ojeda
"Paul E. McKenney" <paulmck@kernel.org> writes:
> On Sun, Apr 10, 2022 at 09:33:43PM +1000, Michael Ellerman wrote:
>> Zhouyi Zhou <zhouzhouyi@gmail.com> writes:
>> > On Fri, Apr 8, 2022 at 10:07 PM Paul E. McKenney <paulmck@kernel.org> wrote:
>> >> On Fri, Apr 08, 2022 at 06:02:19PM +0800, Zhouyi Zhou wrote:
>> >> > On Fri, Apr 8, 2022 at 3:23 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
>> ...
>> >> > > I haven't seen it in my testing. But using Miguel's config I can
>> >> > > reproduce it seemingly on every boot.
>> >> > >
>> >> > > For me it bisects to:
>> >> > >
>> >> > > 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
>> >> > >
>> >> > > Which seems plausible.
>> >> > I also bisect to 35de589cb879 ("powerpc/time: improve decrementer
>> >> > clockevent processing")
>> ...
>> >>
>> >> > > Reverting that on mainline makes the bug go away.
>>
>> >> > I also revert that on the mainline, and am currently doing a pressure
>> >> > test (by repeatedly invoking qemu and checking the console.log) on PPC
>> >> > VM in Oregon State University.
>>
>> > After 306 rounds of stress test on mainline without triggering the bug
>> > (last for 4 hours and 27 minutes), I think the bug is indeed caused by
>> > 35de589cb879 ("powerpc/time: improve decrementer clockevent
>> > processing") and stop the test for now.
>>
>> Thanks for testing, that's pretty conclusive.
>>
>> I'm not inclined to actually revert it yet.
>>
>> We need to understand if there's actually a bug in the patch, or if it's
>> just exposing some existing bug/bad behavior we have. The fact that it
>> only appears with CONFIG_HIGH_RES_TIMERS=n is suspicious.
>>
>> Do we have some code that inadvertently relies on something enabled by
>> HIGH_RES_TIMERS=y, or do we have a bug that is hidden by HIGH_RES_TIMERS=y ?
>
> For whatever it is worth, moderate rcutorture runs to completion without
> errors with CONFIG_HIGH_RES_TIMERS=n on 64-bit x86.
Thanks for testing that, I don't have any big x86 machines to test on :)
> Also for whatever it is worth, I don't know of anything other than
> microcontrollers or the larger IoT devices that would want their kernels
> built with CONFIG_HIGH_RES_TIMERS=n. Which might be a failure of
> imagination on my part, but so it goes.
Yeah I agree, like I said before I wasn't even aware you could turn it
off. So I think we'll definitely add a select HIGH_RES_TIMERS in future,
but first I need to work out why we are seeing stalls with it disabled.
cheers
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-12 6:53 ` Michael Ellerman
0 siblings, 0 replies; 50+ messages in thread
From: Michael Ellerman @ 2022-04-12 6:53 UTC (permalink / raw)
To: paulmck; +Cc: Zhouyi Zhou, rcu, Miguel Ojeda, linuxppc-dev, Nicholas Piggin
"Paul E. McKenney" <paulmck@kernel.org> writes:
> On Sun, Apr 10, 2022 at 09:33:43PM +1000, Michael Ellerman wrote:
>> Zhouyi Zhou <zhouzhouyi@gmail.com> writes:
>> > On Fri, Apr 8, 2022 at 10:07 PM Paul E. McKenney <paulmck@kernel.org> wrote:
>> >> On Fri, Apr 08, 2022 at 06:02:19PM +0800, Zhouyi Zhou wrote:
>> >> > On Fri, Apr 8, 2022 at 3:23 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
>> ...
>> >> > > I haven't seen it in my testing. But using Miguel's config I can
>> >> > > reproduce it seemingly on every boot.
>> >> > >
>> >> > > For me it bisects to:
>> >> > >
>> >> > > 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
>> >> > >
>> >> > > Which seems plausible.
>> >> > I also bisect to 35de589cb879 ("powerpc/time: improve decrementer
>> >> > clockevent processing")
>> ...
>> >>
>> >> > > Reverting that on mainline makes the bug go away.
>>
>> >> > I also revert that on the mainline, and am currently doing a pressure
>> >> > test (by repeatedly invoking qemu and checking the console.log) on PPC
>> >> > VM in Oregon State University.
>>
>> > After 306 rounds of stress test on mainline without triggering the bug
>> > (last for 4 hours and 27 minutes), I think the bug is indeed caused by
>> > 35de589cb879 ("powerpc/time: improve decrementer clockevent
>> > processing") and stop the test for now.
>>
>> Thanks for testing, that's pretty conclusive.
>>
>> I'm not inclined to actually revert it yet.
>>
>> We need to understand if there's actually a bug in the patch, or if it's
>> just exposing some existing bug/bad behavior we have. The fact that it
>> only appears with CONFIG_HIGH_RES_TIMERS=n is suspicious.
>>
>> Do we have some code that inadvertently relies on something enabled by
>> HIGH_RES_TIMERS=y, or do we have a bug that is hidden by HIGH_RES_TIMERS=y ?
>
> For whatever it is worth, moderate rcutorture runs to completion without
> errors with CONFIG_HIGH_RES_TIMERS=n on 64-bit x86.
Thanks for testing that, I don't have any big x86 machines to test on :)
> Also for whatever it is worth, I don't know of anything other than
> microcontrollers or the larger IoT devices that would want their kernels
> built with CONFIG_HIGH_RES_TIMERS=n. Which might be a failure of
> imagination on my part, but so it goes.
Yeah I agree, like I said before I wasn't even aware you could turn it
off. So I think we'll definitely add a select HIGH_RES_TIMERS in future,
but first I need to work out why we are seeing stalls with it disabled.
cheers
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-10 11:33 ` Michael Ellerman
@ 2022-04-11 3:05 ` Paul E. McKenney
0 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-11 3:05 UTC (permalink / raw)
To: Michael Ellerman
Cc: Zhouyi Zhou, rcu, Miguel Ojeda, linuxppc-dev, Nicholas Piggin
On Sun, Apr 10, 2022 at 09:33:43PM +1000, Michael Ellerman wrote:
> Zhouyi Zhou <zhouzhouyi@gmail.com> writes:
> > On Fri, Apr 8, 2022 at 10:07 PM Paul E. McKenney <paulmck@kernel.org> wrote:
> >> On Fri, Apr 08, 2022 at 06:02:19PM +0800, Zhouyi Zhou wrote:
> >> > On Fri, Apr 8, 2022 at 3:23 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
> ...
> >> > > I haven't seen it in my testing. But using Miguel's config I can
> >> > > reproduce it seemingly on every boot.
> >> > >
> >> > > For me it bisects to:
> >> > >
> >> > > 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
> >> > >
> >> > > Which seems plausible.
> >> > I also bisect to 35de589cb879 ("powerpc/time: improve decrementer
> >> > clockevent processing")
> ...
> >>
> >> > > Reverting that on mainline makes the bug go away.
>
> >> > I also revert that on the mainline, and am currently doing a pressure
> >> > test (by repeatedly invoking qemu and checking the console.log) on PPC
> >> > VM in Oregon State University.
>
> > After 306 rounds of stress test on mainline without triggering the bug
> > (last for 4 hours and 27 minutes), I think the bug is indeed caused by
> > 35de589cb879 ("powerpc/time: improve decrementer clockevent
> > processing") and stop the test for now.
>
> Thanks for testing, that's pretty conclusive.
>
> I'm not inclined to actually revert it yet.
>
> We need to understand if there's actually a bug in the patch, or if it's
> just exposing some existing bug/bad behavior we have. The fact that it
> only appears with CONFIG_HIGH_RES_TIMERS=n is suspicious.
>
> Do we have some code that inadvertently relies on something enabled by
> HIGH_RES_TIMERS=y, or do we have a bug that is hidden by HIGH_RES_TIMERS=y ?
For whatever it is worth, moderate rcutorture runs to completion without
errors with CONFIG_HIGH_RES_TIMERS=n on 64-bit x86.
Also for whatever it is worth, I don't know of anything other than
microcontrollers or the larger IoT devices that would want their kernels
built with CONFIG_HIGH_RES_TIMERS=n. Which might be a failure of
imagination on my part, but so it goes.
Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-11 3:05 ` Paul E. McKenney
0 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-11 3:05 UTC (permalink / raw)
To: Michael Ellerman
Cc: rcu, Zhouyi Zhou, linuxppc-dev, Nicholas Piggin, Miguel Ojeda
On Sun, Apr 10, 2022 at 09:33:43PM +1000, Michael Ellerman wrote:
> Zhouyi Zhou <zhouzhouyi@gmail.com> writes:
> > On Fri, Apr 8, 2022 at 10:07 PM Paul E. McKenney <paulmck@kernel.org> wrote:
> >> On Fri, Apr 08, 2022 at 06:02:19PM +0800, Zhouyi Zhou wrote:
> >> > On Fri, Apr 8, 2022 at 3:23 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
> ...
> >> > > I haven't seen it in my testing. But using Miguel's config I can
> >> > > reproduce it seemingly on every boot.
> >> > >
> >> > > For me it bisects to:
> >> > >
> >> > > 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
> >> > >
> >> > > Which seems plausible.
> >> > I also bisect to 35de589cb879 ("powerpc/time: improve decrementer
> >> > clockevent processing")
> ...
> >>
> >> > > Reverting that on mainline makes the bug go away.
>
> >> > I also revert that on the mainline, and am currently doing a pressure
> >> > test (by repeatedly invoking qemu and checking the console.log) on PPC
> >> > VM in Oregon State University.
>
> > After 306 rounds of stress test on mainline without triggering the bug
> > (last for 4 hours and 27 minutes), I think the bug is indeed caused by
> > 35de589cb879 ("powerpc/time: improve decrementer clockevent
> > processing") and stop the test for now.
>
> Thanks for testing, that's pretty conclusive.
>
> I'm not inclined to actually revert it yet.
>
> We need to understand if there's actually a bug in the patch, or if it's
> just exposing some existing bug/bad behavior we have. The fact that it
> only appears with CONFIG_HIGH_RES_TIMERS=n is suspicious.
>
> Do we have some code that inadvertently relies on something enabled by
> HIGH_RES_TIMERS=y, or do we have a bug that is hidden by HIGH_RES_TIMERS=y ?
For whatever it is worth, moderate rcutorture runs to completion without
errors with CONFIG_HIGH_RES_TIMERS=n on 64-bit x86.
Also for whatever it is worth, I don't know of anything other than
microcontrollers or the larger IoT devices that would want their kernels
built with CONFIG_HIGH_RES_TIMERS=n. Which might be a failure of
imagination on my part, but so it goes.
Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-08 14:25 ` Zhouyi Zhou
(?)
@ 2022-04-10 11:33 ` Michael Ellerman
2022-04-11 3:05 ` Paul E. McKenney
-1 siblings, 1 reply; 50+ messages in thread
From: Michael Ellerman @ 2022-04-10 11:33 UTC (permalink / raw)
To: Zhouyi Zhou, Paul E. McKenney
Cc: rcu, Miguel Ojeda, linuxppc-dev, Nicholas Piggin
Zhouyi Zhou <zhouzhouyi@gmail.com> writes:
> On Fri, Apr 8, 2022 at 10:07 PM Paul E. McKenney <paulmck@kernel.org> wrote:
>> On Fri, Apr 08, 2022 at 06:02:19PM +0800, Zhouyi Zhou wrote:
>> > On Fri, Apr 8, 2022 at 3:23 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
...
>> > > I haven't seen it in my testing. But using Miguel's config I can
>> > > reproduce it seemingly on every boot.
>> > >
>> > > For me it bisects to:
>> > >
>> > > 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
>> > >
>> > > Which seems plausible.
>> > I also bisect to 35de589cb879 ("powerpc/time: improve decrementer
>> > clockevent processing")
...
>>
>> > > Reverting that on mainline makes the bug go away.
>> > I also revert that on the mainline, and am currently doing a pressure
>> > test (by repeatedly invoking qemu and checking the console.log) on PPC
>> > VM in Oregon State University.
> After 306 rounds of stress test on mainline without triggering the bug
> (last for 4 hours and 27 minutes), I think the bug is indeed caused by
> 35de589cb879 ("powerpc/time: improve decrementer clockevent
> processing") and stop the test for now.
Thanks for testing, that's pretty conclusive.
I'm not inclined to actually revert it yet.
We need to understand if there's actually a bug in the patch, or if it's
just exposing some existing bug/bad behavior we have. The fact that it
only appears with CONFIG_HIGH_RES_TIMERS=n is suspicious.
Do we have some code that inadvertently relies on something enabled by
HIGH_RES_TIMERS=y, or do we have a bug that is hidden by HIGH_RES_TIMERS=y ?
cheers
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-08 14:42 ` Michael Ellerman
@ 2022-04-08 17:02 ` Miguel Ojeda
2022-04-08 17:02 ` Miguel Ojeda
1 sibling, 0 replies; 50+ messages in thread
From: Miguel Ojeda @ 2022-04-08 17:02 UTC (permalink / raw)
To: Michael Ellerman
Cc: Paul E. McKenney, Zhouyi Zhou, rcu, linuxppc-dev, Nicholas Piggin
On Fri, Apr 8, 2022 at 4:42 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
>
> The Rust CI has it disabled because I copied that from the x86 defconfig
> they were using back when I added the Rust support. I think that was
> meant to be a stripped down fast config for CI, but the result is it's
Indeed, that was my intention when I created the original config.
> So I'll send a patch to turn HIGH_RES_TIMERS on for the Rust CI, and we
> can debug this further without blocking them.
Thanks! I can also do it on your behalf, if you prefer, when I sync with -rc1.
Cheers,
Miguel
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-08 17:02 ` Miguel Ojeda
0 siblings, 0 replies; 50+ messages in thread
From: Miguel Ojeda @ 2022-04-08 17:02 UTC (permalink / raw)
To: Michael Ellerman
Cc: rcu, Zhouyi Zhou, linuxppc-dev, Nicholas Piggin, Paul E. McKenney
On Fri, Apr 8, 2022 at 4:42 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
>
> The Rust CI has it disabled because I copied that from the x86 defconfig
> they were using back when I added the Rust support. I think that was
> meant to be a stripped down fast config for CI, but the result is it's
Indeed, that was my intention when I created the original config.
> So I'll send a patch to turn HIGH_RES_TIMERS on for the Rust CI, and we
> can debug this further without blocking them.
Thanks! I can also do it on your behalf, if you prefer, when I sync with -rc1.
Cheers,
Miguel
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-08 14:42 ` Michael Ellerman
@ 2022-04-08 15:52 ` Paul E. McKenney
2022-04-08 17:02 ` Miguel Ojeda
1 sibling, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-08 15:52 UTC (permalink / raw)
To: Michael Ellerman
Cc: Zhouyi Zhou, rcu, Miguel Ojeda, linuxppc-dev, Nicholas Piggin
On Sat, Apr 09, 2022 at 12:42:39AM +1000, Michael Ellerman wrote:
> Michael Ellerman <mpe@ellerman.id.au> writes:
> > "Paul E. McKenney" <paulmck@kernel.org> writes:
> >> On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> >>> Hi
> >>>
> >>> I can reproduce it in a ppc virtual cloud server provided by Oregon
> >>> State University. Following is what I do:
> >>> 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> >>> -o linux-5.18-rc1.tar.gz
> >>> 2) tar zxf linux-5.18-rc1.tar.gz
> >>> 3) cp config linux-5.18-rc1/.config
> >>> 4) cd linux-5.18-rc1
> >>> 5) make vmlinux -j 8
> >>> 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> >>> -smp 2 (QEMU 4.2.1)
> >>> 7) after 12 rounds, the bug got reproduced:
> >>> (http://154.223.142.244/logs/20220406/qemu.log.txt)
> >>
> >> Just to make sure, are you both seeing the same thing? Last I knew,
> >> Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> >> built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> >> I miss something?
> >>
> >> Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> >> kthread slept for three milliseconds, but did not wake up for more than
> >> 20 seconds. This kthread would normally have awakened on CPU 1, but
> >> CPU 1 looks to me to be very unhealthy, as can be seen in your console
> >> output below (but maybe my idea of what is healthy for powerpc systems
> >> is outdated). Please see also the inline annotations.
> >>
> >> Thoughts from the PPC guys?
> >
> > I haven't seen it in my testing. But using Miguel's config I can
> > reproduce it seemingly on every boot.
> >
> > For me it bisects to:
> >
> > 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
> >
> > Which seems plausible.
> >
> > Reverting that on mainline makes the bug go away.
> >
> > I don't see an obvious bug in the diff, but I could be wrong, or the old
> > code was papering over an existing bug?
> >
> > I'll try and work out what it is about Miguel's config that exposes
> > this vs our defconfig, that might give us a clue.
>
> It's CONFIG_HIGH_RES_TIMERS=n which triggers the stall.
>
> I can reproduce just with:
>
> $ make ppc64le_guest_defconfig
> $ ./scripts/config -d HIGH_RES_TIMERS
>
> We have no defconfigs that disable HIGH_RES_TIMERS, I didn't even
> realise you could disable it TBH :)
>
> The Rust CI has it disabled because I copied that from the x86 defconfig
> they were using back when I added the Rust support. I think that was
> meant to be a stripped down fast config for CI, but the result is it's
> just using a badly tested combination which is not helpful.
>
> So I'll send a patch to turn HIGH_RES_TIMERS on for the Rust CI, and we
> can debug this further without blocking them.
Would it make sense to select HIGH_RES_TIMERS from one of the Kconfig*
files in arch/powerpc? Asking for a friend. ;-)
Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-08 15:52 ` Paul E. McKenney
0 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-08 15:52 UTC (permalink / raw)
To: Michael Ellerman
Cc: rcu, Zhouyi Zhou, linuxppc-dev, Nicholas Piggin, Miguel Ojeda
On Sat, Apr 09, 2022 at 12:42:39AM +1000, Michael Ellerman wrote:
> Michael Ellerman <mpe@ellerman.id.au> writes:
> > "Paul E. McKenney" <paulmck@kernel.org> writes:
> >> On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> >>> Hi
> >>>
> >>> I can reproduce it in a ppc virtual cloud server provided by Oregon
> >>> State University. Following is what I do:
> >>> 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> >>> -o linux-5.18-rc1.tar.gz
> >>> 2) tar zxf linux-5.18-rc1.tar.gz
> >>> 3) cp config linux-5.18-rc1/.config
> >>> 4) cd linux-5.18-rc1
> >>> 5) make vmlinux -j 8
> >>> 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> >>> -smp 2 (QEMU 4.2.1)
> >>> 7) after 12 rounds, the bug got reproduced:
> >>> (http://154.223.142.244/logs/20220406/qemu.log.txt)
> >>
> >> Just to make sure, are you both seeing the same thing? Last I knew,
> >> Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> >> built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> >> I miss something?
> >>
> >> Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> >> kthread slept for three milliseconds, but did not wake up for more than
> >> 20 seconds. This kthread would normally have awakened on CPU 1, but
> >> CPU 1 looks to me to be very unhealthy, as can be seen in your console
> >> output below (but maybe my idea of what is healthy for powerpc systems
> >> is outdated). Please see also the inline annotations.
> >>
> >> Thoughts from the PPC guys?
> >
> > I haven't seen it in my testing. But using Miguel's config I can
> > reproduce it seemingly on every boot.
> >
> > For me it bisects to:
> >
> > 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
> >
> > Which seems plausible.
> >
> > Reverting that on mainline makes the bug go away.
> >
> > I don't see an obvious bug in the diff, but I could be wrong, or the old
> > code was papering over an existing bug?
> >
> > I'll try and work out what it is about Miguel's config that exposes
> > this vs our defconfig, that might give us a clue.
>
> It's CONFIG_HIGH_RES_TIMERS=n which triggers the stall.
>
> I can reproduce just with:
>
> $ make ppc64le_guest_defconfig
> $ ./scripts/config -d HIGH_RES_TIMERS
>
> We have no defconfigs that disable HIGH_RES_TIMERS, I didn't even
> realise you could disable it TBH :)
>
> The Rust CI has it disabled because I copied that from the x86 defconfig
> they were using back when I added the Rust support. I think that was
> meant to be a stripped down fast config for CI, but the result is it's
> just using a badly tested combination which is not helpful.
>
> So I'll send a patch to turn HIGH_RES_TIMERS on for the Rust CI, and we
> can debug this further without blocking them.
Would it make sense to select HIGH_RES_TIMERS from one of the Kconfig*
files in arch/powerpc? Asking for a friend. ;-)
Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-08 7:23 ` Michael Ellerman
` (2 preceding siblings ...)
2022-04-08 14:06 ` Paul E. McKenney
@ 2022-04-08 14:42 ` Michael Ellerman
2022-04-08 15:52 ` Paul E. McKenney
2022-04-08 17:02 ` Miguel Ojeda
3 siblings, 2 replies; 50+ messages in thread
From: Michael Ellerman @ 2022-04-08 14:42 UTC (permalink / raw)
To: paulmck, Zhouyi Zhou; +Cc: rcu, Miguel Ojeda, linuxppc-dev, Nicholas Piggin
Michael Ellerman <mpe@ellerman.id.au> writes:
> "Paul E. McKenney" <paulmck@kernel.org> writes:
>> On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
>>> Hi
>>>
>>> I can reproduce it in a ppc virtual cloud server provided by Oregon
>>> State University. Following is what I do:
>>> 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
>>> -o linux-5.18-rc1.tar.gz
>>> 2) tar zxf linux-5.18-rc1.tar.gz
>>> 3) cp config linux-5.18-rc1/.config
>>> 4) cd linux-5.18-rc1
>>> 5) make vmlinux -j 8
>>> 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
>>> -smp 2 (QEMU 4.2.1)
>>> 7) after 12 rounds, the bug got reproduced:
>>> (http://154.223.142.244/logs/20220406/qemu.log.txt)
>>
>> Just to make sure, are you both seeing the same thing? Last I knew,
>> Zhouyi was chasing an RCU-tasks issue that appears only in kernels
>> built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
>> I miss something?
>>
>> Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
>> kthread slept for three milliseconds, but did not wake up for more than
>> 20 seconds. This kthread would normally have awakened on CPU 1, but
>> CPU 1 looks to me to be very unhealthy, as can be seen in your console
>> output below (but maybe my idea of what is healthy for powerpc systems
>> is outdated). Please see also the inline annotations.
>>
>> Thoughts from the PPC guys?
>
> I haven't seen it in my testing. But using Miguel's config I can
> reproduce it seemingly on every boot.
>
> For me it bisects to:
>
> 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
>
> Which seems plausible.
>
> Reverting that on mainline makes the bug go away.
>
> I don't see an obvious bug in the diff, but I could be wrong, or the old
> code was papering over an existing bug?
>
> I'll try and work out what it is about Miguel's config that exposes
> this vs our defconfig, that might give us a clue.
It's CONFIG_HIGH_RES_TIMERS=n which triggers the stall.
I can reproduce just with:
$ make ppc64le_guest_defconfig
$ ./scripts/config -d HIGH_RES_TIMERS
We have no defconfigs that disable HIGH_RES_TIMERS, I didn't even
realise you could disable it TBH :)
The Rust CI has it disabled because I copied that from the x86 defconfig
they were using back when I added the Rust support. I think that was
meant to be a stripped down fast config for CI, but the result is it's
just using a badly tested combination which is not helpful.
So I'll send a patch to turn HIGH_RES_TIMERS on for the Rust CI, and we
can debug this further without blocking them.
cheers
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-08 14:07 ` Paul E. McKenney
@ 2022-04-08 14:25 ` Zhouyi Zhou
-1 siblings, 0 replies; 50+ messages in thread
From: Zhouyi Zhou @ 2022-04-08 14:25 UTC (permalink / raw)
To: Paul E. McKenney
Cc: Michael Ellerman, rcu, Miguel Ojeda, linuxppc-dev, Nicholas Piggin
On Fri, Apr 8, 2022 at 10:07 PM Paul E. McKenney <paulmck@kernel.org> wrote:
>
> On Fri, Apr 08, 2022 at 06:02:19PM +0800, Zhouyi Zhou wrote:
> > On Fri, Apr 8, 2022 at 3:23 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
> > >
> > > "Paul E. McKenney" <paulmck@kernel.org> writes:
> > > > On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> > > >> Hi
> > > >>
> > > >> I can reproduce it in a ppc virtual cloud server provided by Oregon
> > > >> State University. Following is what I do:
> > > >> 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> > > >> -o linux-5.18-rc1.tar.gz
> > > >> 2) tar zxf linux-5.18-rc1.tar.gz
> > > >> 3) cp config linux-5.18-rc1/.config
> > > >> 4) cd linux-5.18-rc1
> > > >> 5) make vmlinux -j 8
> > > >> 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> > > >> -smp 2 (QEMU 4.2.1)
> > > >> 7) after 12 rounds, the bug got reproduced:
> > > >> (http://154.223.142.244/logs/20220406/qemu.log.txt)
> > > >
> > > > Just to make sure, are you both seeing the same thing? Last I knew,
> > > > Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> > > > built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> > > > I miss something?
> > > >
> > > > Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> > > > kthread slept for three milliseconds, but did not wake up for more than
> > > > 20 seconds. This kthread would normally have awakened on CPU 1, but
> > > > CPU 1 looks to me to be very unhealthy, as can be seen in your console
> > > > output below (but maybe my idea of what is healthy for powerpc systems
> > > > is outdated). Please see also the inline annotations.
> > > >
> > > > Thoughts from the PPC guys?
> > >
> > > I haven't seen it in my testing. But using Miguel's config I can
> > > reproduce it seemingly on every boot.
> > >
> > > For me it bisects to:
> > >
> > > 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
> > >
> > > Which seems plausible.
> > I also bisect to 35de589cb879 ("powerpc/time: improve decrementer
> > clockevent processing")
>
> Very good! Thank you all!!!
You are very welcome ;-) and Thank you all!!!!
>
> Thanx, Paul
>
> > > Reverting that on mainline makes the bug go away.
> > I also revert that on the mainline, and am currently doing a pressure
> > test (by repeatedly invoking qemu and checking the console.log) on PPC
> > VM in Oregon State University.
After 306 rounds of stress test on mainline without triggering the bug
(last for 4 hours and 27 minutes), I think the bug is indeed caused by
35de589cb879 ("powerpc/time: improve decrementer clockevent
processing") and stop the test for now.
Thanks ;-)
Zhouyi
> > >
> > > I don't see an obvious bug in the diff, but I could be wrong, or the old
> > > code was papering over an existing bug?
> > >
> > > I'll try and work out what it is about Miguel's config that exposes
> > > this vs our defconfig, that might give us a clue.
> > Great job!
> > >
> > > cheers
> > Thanks
> > Zhouyi
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-08 14:25 ` Zhouyi Zhou
0 siblings, 0 replies; 50+ messages in thread
From: Zhouyi Zhou @ 2022-04-08 14:25 UTC (permalink / raw)
To: Paul E. McKenney; +Cc: rcu, linuxppc-dev, Nicholas Piggin, Miguel Ojeda
On Fri, Apr 8, 2022 at 10:07 PM Paul E. McKenney <paulmck@kernel.org> wrote:
>
> On Fri, Apr 08, 2022 at 06:02:19PM +0800, Zhouyi Zhou wrote:
> > On Fri, Apr 8, 2022 at 3:23 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
> > >
> > > "Paul E. McKenney" <paulmck@kernel.org> writes:
> > > > On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> > > >> Hi
> > > >>
> > > >> I can reproduce it in a ppc virtual cloud server provided by Oregon
> > > >> State University. Following is what I do:
> > > >> 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> > > >> -o linux-5.18-rc1.tar.gz
> > > >> 2) tar zxf linux-5.18-rc1.tar.gz
> > > >> 3) cp config linux-5.18-rc1/.config
> > > >> 4) cd linux-5.18-rc1
> > > >> 5) make vmlinux -j 8
> > > >> 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> > > >> -smp 2 (QEMU 4.2.1)
> > > >> 7) after 12 rounds, the bug got reproduced:
> > > >> (http://154.223.142.244/logs/20220406/qemu.log.txt)
> > > >
> > > > Just to make sure, are you both seeing the same thing? Last I knew,
> > > > Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> > > > built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> > > > I miss something?
> > > >
> > > > Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> > > > kthread slept for three milliseconds, but did not wake up for more than
> > > > 20 seconds. This kthread would normally have awakened on CPU 1, but
> > > > CPU 1 looks to me to be very unhealthy, as can be seen in your console
> > > > output below (but maybe my idea of what is healthy for powerpc systems
> > > > is outdated). Please see also the inline annotations.
> > > >
> > > > Thoughts from the PPC guys?
> > >
> > > I haven't seen it in my testing. But using Miguel's config I can
> > > reproduce it seemingly on every boot.
> > >
> > > For me it bisects to:
> > >
> > > 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
> > >
> > > Which seems plausible.
> > I also bisect to 35de589cb879 ("powerpc/time: improve decrementer
> > clockevent processing")
>
> Very good! Thank you all!!!
You are very welcome ;-) and Thank you all!!!!
>
> Thanx, Paul
>
> > > Reverting that on mainline makes the bug go away.
> > I also revert that on the mainline, and am currently doing a pressure
> > test (by repeatedly invoking qemu and checking the console.log) on PPC
> > VM in Oregon State University.
After 306 rounds of stress test on mainline without triggering the bug
(last for 4 hours and 27 minutes), I think the bug is indeed caused by
35de589cb879 ("powerpc/time: improve decrementer clockevent
processing") and stop the test for now.
Thanks ;-)
Zhouyi
> > >
> > > I don't see an obvious bug in the diff, but I could be wrong, or the old
> > > code was papering over an existing bug?
> > >
> > > I'll try and work out what it is about Miguel's config that exposes
> > > this vs our defconfig, that might give us a clue.
> > Great job!
> > >
> > > cheers
> > Thanks
> > Zhouyi
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-08 10:02 ` Zhouyi Zhou
@ 2022-04-08 14:07 ` Paul E. McKenney
-1 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-08 14:07 UTC (permalink / raw)
To: Zhouyi Zhou
Cc: Michael Ellerman, rcu, Miguel Ojeda, linuxppc-dev, Nicholas Piggin
On Fri, Apr 08, 2022 at 06:02:19PM +0800, Zhouyi Zhou wrote:
> On Fri, Apr 8, 2022 at 3:23 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
> >
> > "Paul E. McKenney" <paulmck@kernel.org> writes:
> > > On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> > >> Hi
> > >>
> > >> I can reproduce it in a ppc virtual cloud server provided by Oregon
> > >> State University. Following is what I do:
> > >> 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> > >> -o linux-5.18-rc1.tar.gz
> > >> 2) tar zxf linux-5.18-rc1.tar.gz
> > >> 3) cp config linux-5.18-rc1/.config
> > >> 4) cd linux-5.18-rc1
> > >> 5) make vmlinux -j 8
> > >> 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> > >> -smp 2 (QEMU 4.2.1)
> > >> 7) after 12 rounds, the bug got reproduced:
> > >> (http://154.223.142.244/logs/20220406/qemu.log.txt)
> > >
> > > Just to make sure, are you both seeing the same thing? Last I knew,
> > > Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> > > built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> > > I miss something?
> > >
> > > Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> > > kthread slept for three milliseconds, but did not wake up for more than
> > > 20 seconds. This kthread would normally have awakened on CPU 1, but
> > > CPU 1 looks to me to be very unhealthy, as can be seen in your console
> > > output below (but maybe my idea of what is healthy for powerpc systems
> > > is outdated). Please see also the inline annotations.
> > >
> > > Thoughts from the PPC guys?
> >
> > I haven't seen it in my testing. But using Miguel's config I can
> > reproduce it seemingly on every boot.
> >
> > For me it bisects to:
> >
> > 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
> >
> > Which seems plausible.
> I also bisect to 35de589cb879 ("powerpc/time: improve decrementer
> clockevent processing")
Very good! Thank you all!!!
Thanx, Paul
> > Reverting that on mainline makes the bug go away.
> I also revert that on the mainline, and am currently doing a pressure
> test (by repeatedly invoking qemu and checking the console.log) on PPC
> VM in Oregon State University.
> >
> > I don't see an obvious bug in the diff, but I could be wrong, or the old
> > code was papering over an existing bug?
> >
> > I'll try and work out what it is about Miguel's config that exposes
> > this vs our defconfig, that might give us a clue.
> Great job!
> >
> > cheers
> Thanks
> Zhouyi
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-08 14:07 ` Paul E. McKenney
0 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-08 14:07 UTC (permalink / raw)
To: Zhouyi Zhou; +Cc: rcu, linuxppc-dev, Nicholas Piggin, Miguel Ojeda
On Fri, Apr 08, 2022 at 06:02:19PM +0800, Zhouyi Zhou wrote:
> On Fri, Apr 8, 2022 at 3:23 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
> >
> > "Paul E. McKenney" <paulmck@kernel.org> writes:
> > > On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> > >> Hi
> > >>
> > >> I can reproduce it in a ppc virtual cloud server provided by Oregon
> > >> State University. Following is what I do:
> > >> 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> > >> -o linux-5.18-rc1.tar.gz
> > >> 2) tar zxf linux-5.18-rc1.tar.gz
> > >> 3) cp config linux-5.18-rc1/.config
> > >> 4) cd linux-5.18-rc1
> > >> 5) make vmlinux -j 8
> > >> 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> > >> -smp 2 (QEMU 4.2.1)
> > >> 7) after 12 rounds, the bug got reproduced:
> > >> (http://154.223.142.244/logs/20220406/qemu.log.txt)
> > >
> > > Just to make sure, are you both seeing the same thing? Last I knew,
> > > Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> > > built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> > > I miss something?
> > >
> > > Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> > > kthread slept for three milliseconds, but did not wake up for more than
> > > 20 seconds. This kthread would normally have awakened on CPU 1, but
> > > CPU 1 looks to me to be very unhealthy, as can be seen in your console
> > > output below (but maybe my idea of what is healthy for powerpc systems
> > > is outdated). Please see also the inline annotations.
> > >
> > > Thoughts from the PPC guys?
> >
> > I haven't seen it in my testing. But using Miguel's config I can
> > reproduce it seemingly on every boot.
> >
> > For me it bisects to:
> >
> > 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
> >
> > Which seems plausible.
> I also bisect to 35de589cb879 ("powerpc/time: improve decrementer
> clockevent processing")
Very good! Thank you all!!!
Thanx, Paul
> > Reverting that on mainline makes the bug go away.
> I also revert that on the mainline, and am currently doing a pressure
> test (by repeatedly invoking qemu and checking the console.log) on PPC
> VM in Oregon State University.
> >
> > I don't see an obvious bug in the diff, but I could be wrong, or the old
> > code was papering over an existing bug?
> >
> > I'll try and work out what it is about Miguel's config that exposes
> > this vs our defconfig, that might give us a clue.
> Great job!
> >
> > cheers
> Thanks
> Zhouyi
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-08 7:23 ` Michael Ellerman
@ 2022-04-08 14:06 ` Paul E. McKenney
2022-04-08 13:52 ` Miguel Ojeda
` (2 subsequent siblings)
3 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-08 14:06 UTC (permalink / raw)
To: Michael Ellerman
Cc: Zhouyi Zhou, rcu, Miguel Ojeda, linuxppc-dev, Nicholas Piggin
On Fri, Apr 08, 2022 at 05:23:32PM +1000, Michael Ellerman wrote:
> "Paul E. McKenney" <paulmck@kernel.org> writes:
> > On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> >> Hi
> >>
> >> I can reproduce it in a ppc virtual cloud server provided by Oregon
> >> State University. Following is what I do:
> >> 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> >> -o linux-5.18-rc1.tar.gz
> >> 2) tar zxf linux-5.18-rc1.tar.gz
> >> 3) cp config linux-5.18-rc1/.config
> >> 4) cd linux-5.18-rc1
> >> 5) make vmlinux -j 8
> >> 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> >> -smp 2 (QEMU 4.2.1)
> >> 7) after 12 rounds, the bug got reproduced:
> >> (http://154.223.142.244/logs/20220406/qemu.log.txt)
> >
> > Just to make sure, are you both seeing the same thing? Last I knew,
> > Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> > built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> > I miss something?
> >
> > Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> > kthread slept for three milliseconds, but did not wake up for more than
> > 20 seconds. This kthread would normally have awakened on CPU 1, but
> > CPU 1 looks to me to be very unhealthy, as can be seen in your console
> > output below (but maybe my idea of what is healthy for powerpc systems
> > is outdated). Please see also the inline annotations.
> >
> > Thoughts from the PPC guys?
>
> I haven't seen it in my testing. But using Miguel's config I can
> reproduce it seemingly on every boot.
>
> For me it bisects to:
>
> 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
>
> Which seems plausible.
>
> Reverting that on mainline makes the bug go away.
Thank you for looking into this!
> I don't see an obvious bug in the diff, but I could be wrong, or the old
> code was papering over an existing bug?
>
> I'll try and work out what it is about Miguel's config that exposes
> this vs our defconfig, that might give us a clue.
I have recently had some RCU bugs that were due to Kconfig failing to
rule out broken .config files. Maybe this is something similar?
Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-08 14:06 ` Paul E. McKenney
0 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-08 14:06 UTC (permalink / raw)
To: Michael Ellerman
Cc: rcu, Zhouyi Zhou, linuxppc-dev, Nicholas Piggin, Miguel Ojeda
On Fri, Apr 08, 2022 at 05:23:32PM +1000, Michael Ellerman wrote:
> "Paul E. McKenney" <paulmck@kernel.org> writes:
> > On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> >> Hi
> >>
> >> I can reproduce it in a ppc virtual cloud server provided by Oregon
> >> State University. Following is what I do:
> >> 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> >> -o linux-5.18-rc1.tar.gz
> >> 2) tar zxf linux-5.18-rc1.tar.gz
> >> 3) cp config linux-5.18-rc1/.config
> >> 4) cd linux-5.18-rc1
> >> 5) make vmlinux -j 8
> >> 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> >> -smp 2 (QEMU 4.2.1)
> >> 7) after 12 rounds, the bug got reproduced:
> >> (http://154.223.142.244/logs/20220406/qemu.log.txt)
> >
> > Just to make sure, are you both seeing the same thing? Last I knew,
> > Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> > built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> > I miss something?
> >
> > Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> > kthread slept for three milliseconds, but did not wake up for more than
> > 20 seconds. This kthread would normally have awakened on CPU 1, but
> > CPU 1 looks to me to be very unhealthy, as can be seen in your console
> > output below (but maybe my idea of what is healthy for powerpc systems
> > is outdated). Please see also the inline annotations.
> >
> > Thoughts from the PPC guys?
>
> I haven't seen it in my testing. But using Miguel's config I can
> reproduce it seemingly on every boot.
>
> For me it bisects to:
>
> 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
>
> Which seems plausible.
>
> Reverting that on mainline makes the bug go away.
Thank you for looking into this!
> I don't see an obvious bug in the diff, but I could be wrong, or the old
> code was papering over an existing bug?
>
> I'll try and work out what it is about Miguel's config that exposes
> this vs our defconfig, that might give us a clue.
I have recently had some RCU bugs that were due to Kconfig failing to
rule out broken .config files. Maybe this is something similar?
Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-08 7:23 ` Michael Ellerman
@ 2022-04-08 13:52 ` Miguel Ojeda
2022-04-08 13:52 ` Miguel Ojeda
` (2 subsequent siblings)
3 siblings, 0 replies; 50+ messages in thread
From: Miguel Ojeda @ 2022-04-08 13:52 UTC (permalink / raw)
To: Michael Ellerman
Cc: Paul E. McKenney, Zhouyi Zhou, rcu, linuxppc-dev, Nicholas Piggin
On Fri, Apr 8, 2022 at 9:23 AM Michael Ellerman <mpe@ellerman.id.au> wrote:
>
> I haven't seen it in my testing. But using Miguel's config I can
> reproduce it seemingly on every boot.
Hmm... I noticed this for some kernel builds: in some builds/commits,
it triggered the very first time, while in others I had to re-try
quite a few times. It could be a "fluke", but since it happened to you
too (and Zhouyi seemed to need 12 tries), it may be that particular
kernel builds makes the bug much more likely.
> For me it bisects to:
>
> 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
>
> Which seems plausible.
>
> Reverting that on mainline makes the bug go away.
That is great, thanks for that -- I can revert that one in our CI meanwhile.
> I'll try and work out what it is about Miguel's config that exposes
> this vs our defconfig, that might give us a clue.
Yeah, it is one based on the "debug" one you sent for Rust PPC.
Assuming you based that one on the others we had for other archs, then
I guess we are bound to find some things like this at times like with
randconfig, since I made them to be fairly minimal and "custom"... :)
Cheers,
Miguel
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-08 13:52 ` Miguel Ojeda
0 siblings, 0 replies; 50+ messages in thread
From: Miguel Ojeda @ 2022-04-08 13:52 UTC (permalink / raw)
To: Michael Ellerman
Cc: rcu, Zhouyi Zhou, linuxppc-dev, Nicholas Piggin, Paul E. McKenney
On Fri, Apr 8, 2022 at 9:23 AM Michael Ellerman <mpe@ellerman.id.au> wrote:
>
> I haven't seen it in my testing. But using Miguel's config I can
> reproduce it seemingly on every boot.
Hmm... I noticed this for some kernel builds: in some builds/commits,
it triggered the very first time, while in others I had to re-try
quite a few times. It could be a "fluke", but since it happened to you
too (and Zhouyi seemed to need 12 tries), it may be that particular
kernel builds makes the bug much more likely.
> For me it bisects to:
>
> 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
>
> Which seems plausible.
>
> Reverting that on mainline makes the bug go away.
That is great, thanks for that -- I can revert that one in our CI meanwhile.
> I'll try and work out what it is about Miguel's config that exposes
> this vs our defconfig, that might give us a clue.
Yeah, it is one based on the "debug" one you sent for Rust PPC.
Assuming you based that one on the others we had for other archs, then
I guess we are bound to find some things like this at times like with
randconfig, since I made them to be fairly minimal and "custom"... :)
Cheers,
Miguel
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-08 7:23 ` Michael Ellerman
@ 2022-04-08 10:02 ` Zhouyi Zhou
2022-04-08 13:52 ` Miguel Ojeda
` (2 subsequent siblings)
3 siblings, 0 replies; 50+ messages in thread
From: Zhouyi Zhou @ 2022-04-08 10:02 UTC (permalink / raw)
To: Michael Ellerman
Cc: Paul E. McKenney, rcu, Miguel Ojeda, linuxppc-dev, Nicholas Piggin
On Fri, Apr 8, 2022 at 3:23 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
>
> "Paul E. McKenney" <paulmck@kernel.org> writes:
> > On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> >> Hi
> >>
> >> I can reproduce it in a ppc virtual cloud server provided by Oregon
> >> State University. Following is what I do:
> >> 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> >> -o linux-5.18-rc1.tar.gz
> >> 2) tar zxf linux-5.18-rc1.tar.gz
> >> 3) cp config linux-5.18-rc1/.config
> >> 4) cd linux-5.18-rc1
> >> 5) make vmlinux -j 8
> >> 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> >> -smp 2 (QEMU 4.2.1)
> >> 7) after 12 rounds, the bug got reproduced:
> >> (http://154.223.142.244/logs/20220406/qemu.log.txt)
> >
> > Just to make sure, are you both seeing the same thing? Last I knew,
> > Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> > built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> > I miss something?
> >
> > Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> > kthread slept for three milliseconds, but did not wake up for more than
> > 20 seconds. This kthread would normally have awakened on CPU 1, but
> > CPU 1 looks to me to be very unhealthy, as can be seen in your console
> > output below (but maybe my idea of what is healthy for powerpc systems
> > is outdated). Please see also the inline annotations.
> >
> > Thoughts from the PPC guys?
>
> I haven't seen it in my testing. But using Miguel's config I can
> reproduce it seemingly on every boot.
>
> For me it bisects to:
>
> 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
>
> Which seems plausible.
I also bisect to 35de589cb879 ("powerpc/time: improve decrementer
clockevent processing")
>
> Reverting that on mainline makes the bug go away.
I also revert that on the mainline, and am currently doing a pressure
test (by repeatedly invoking qemu and checking the console.log) on PPC
VM in Oregon State University.
>
> I don't see an obvious bug in the diff, but I could be wrong, or the old
> code was papering over an existing bug?
>
> I'll try and work out what it is about Miguel's config that exposes
> this vs our defconfig, that might give us a clue.
Great job!
>
> cheers
Thanks
Zhouyi
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-08 10:02 ` Zhouyi Zhou
0 siblings, 0 replies; 50+ messages in thread
From: Zhouyi Zhou @ 2022-04-08 10:02 UTC (permalink / raw)
To: Michael Ellerman
Cc: rcu, Miguel Ojeda, linuxppc-dev, Nicholas Piggin, Paul E. McKenney
On Fri, Apr 8, 2022 at 3:23 PM Michael Ellerman <mpe@ellerman.id.au> wrote:
>
> "Paul E. McKenney" <paulmck@kernel.org> writes:
> > On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> >> Hi
> >>
> >> I can reproduce it in a ppc virtual cloud server provided by Oregon
> >> State University. Following is what I do:
> >> 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> >> -o linux-5.18-rc1.tar.gz
> >> 2) tar zxf linux-5.18-rc1.tar.gz
> >> 3) cp config linux-5.18-rc1/.config
> >> 4) cd linux-5.18-rc1
> >> 5) make vmlinux -j 8
> >> 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> >> -smp 2 (QEMU 4.2.1)
> >> 7) after 12 rounds, the bug got reproduced:
> >> (http://154.223.142.244/logs/20220406/qemu.log.txt)
> >
> > Just to make sure, are you both seeing the same thing? Last I knew,
> > Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> > built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> > I miss something?
> >
> > Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> > kthread slept for three milliseconds, but did not wake up for more than
> > 20 seconds. This kthread would normally have awakened on CPU 1, but
> > CPU 1 looks to me to be very unhealthy, as can be seen in your console
> > output below (but maybe my idea of what is healthy for powerpc systems
> > is outdated). Please see also the inline annotations.
> >
> > Thoughts from the PPC guys?
>
> I haven't seen it in my testing. But using Miguel's config I can
> reproduce it seemingly on every boot.
>
> For me it bisects to:
>
> 35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
>
> Which seems plausible.
I also bisect to 35de589cb879 ("powerpc/time: improve decrementer
clockevent processing")
>
> Reverting that on mainline makes the bug go away.
I also revert that on the mainline, and am currently doing a pressure
test (by repeatedly invoking qemu and checking the console.log) on PPC
VM in Oregon State University.
>
> I don't see an obvious bug in the diff, but I could be wrong, or the old
> code was papering over an existing bug?
>
> I'll try and work out what it is about Miguel's config that exposes
> this vs our defconfig, that might give us a clue.
Great job!
>
> cheers
Thanks
Zhouyi
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-06 17:00 ` Paul E. McKenney
(?)
(?)
@ 2022-04-08 7:23 ` Michael Ellerman
2022-04-08 10:02 ` Zhouyi Zhou
` (3 more replies)
-1 siblings, 4 replies; 50+ messages in thread
From: Michael Ellerman @ 2022-04-08 7:23 UTC (permalink / raw)
To: paulmck, Zhouyi Zhou; +Cc: rcu, Miguel Ojeda, linuxppc-dev, Nicholas Piggin
"Paul E. McKenney" <paulmck@kernel.org> writes:
> On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
>> Hi
>>
>> I can reproduce it in a ppc virtual cloud server provided by Oregon
>> State University. Following is what I do:
>> 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
>> -o linux-5.18-rc1.tar.gz
>> 2) tar zxf linux-5.18-rc1.tar.gz
>> 3) cp config linux-5.18-rc1/.config
>> 4) cd linux-5.18-rc1
>> 5) make vmlinux -j 8
>> 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
>> -smp 2 (QEMU 4.2.1)
>> 7) after 12 rounds, the bug got reproduced:
>> (http://154.223.142.244/logs/20220406/qemu.log.txt)
>
> Just to make sure, are you both seeing the same thing? Last I knew,
> Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> I miss something?
>
> Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> kthread slept for three milliseconds, but did not wake up for more than
> 20 seconds. This kthread would normally have awakened on CPU 1, but
> CPU 1 looks to me to be very unhealthy, as can be seen in your console
> output below (but maybe my idea of what is healthy for powerpc systems
> is outdated). Please see also the inline annotations.
>
> Thoughts from the PPC guys?
I haven't seen it in my testing. But using Miguel's config I can
reproduce it seemingly on every boot.
For me it bisects to:
35de589cb879 ("powerpc/time: improve decrementer clockevent processing")
Which seems plausible.
Reverting that on mainline makes the bug go away.
I don't see an obvious bug in the diff, but I could be wrong, or the old
code was papering over an existing bug?
I'll try and work out what it is about Miguel's config that exposes
this vs our defconfig, that might give us a clue.
cheers
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-07 23:14 ` Zhouyi Zhou
@ 2022-04-08 1:43 ` Paul E. McKenney
-1 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-08 1:43 UTC (permalink / raw)
To: Zhouyi Zhou; +Cc: Miguel Ojeda, linuxppc-dev, rcu
On Fri, Apr 08, 2022 at 07:14:20AM +0800, Zhouyi Zhou wrote:
> Dear Paul and Miguel
>
> On Fri, Apr 8, 2022 at 1:55 AM Paul E. McKenney <paulmck@kernel.org> wrote:
> >
> > On Thu, Apr 07, 2022 at 07:05:58PM +0200, Miguel Ojeda wrote:
> > > On Thu, Apr 7, 2022 at 5:15 PM Paul E. McKenney <paulmck@kernel.org> wrote:
> > > >
> > > > Ah. So you would instead look for boot to have completed within 10
> > > > seconds? Either way, reliable automation might well more important than
> > > > reduction in time.
> > >
> > > No (although I guess that could be an option), I was only pointing out
> > > that when no stall is produced, the run should be much quicker than 30
> > > seconds (at least it was in my setup), which would be the majority of the runs.
> >
> > Ah, thank you for the clarification!
> Thank both of you for the information. In my setup (PPC cloud VM), the
> majority of the runs complete at least for 50 seconds. From last
> evening to this morning (Beijing Time), following experiments have
> been done:
> 1) torture mainline: the test quickly finished by hitting "rcu_sched
> self-detected stall" after 12 runs
> 2) torture v5.17: the test last 10 hours plus 14 minutes, 702 runs
> have been done without trigger the bug
>
> Conclusion:
> There must be a commit that causes the bug as Paul has pointed out.
> I am going to do the bisect, and estimate to locate the bug within a
> week (at most).
> This is a good learning experience, thanks for the guidance ;-)
Very good, and looking forward to seeing what you find.
Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-08 1:43 ` Paul E. McKenney
0 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-08 1:43 UTC (permalink / raw)
To: Zhouyi Zhou; +Cc: rcu, Miguel Ojeda, linuxppc-dev
On Fri, Apr 08, 2022 at 07:14:20AM +0800, Zhouyi Zhou wrote:
> Dear Paul and Miguel
>
> On Fri, Apr 8, 2022 at 1:55 AM Paul E. McKenney <paulmck@kernel.org> wrote:
> >
> > On Thu, Apr 07, 2022 at 07:05:58PM +0200, Miguel Ojeda wrote:
> > > On Thu, Apr 7, 2022 at 5:15 PM Paul E. McKenney <paulmck@kernel.org> wrote:
> > > >
> > > > Ah. So you would instead look for boot to have completed within 10
> > > > seconds? Either way, reliable automation might well more important than
> > > > reduction in time.
> > >
> > > No (although I guess that could be an option), I was only pointing out
> > > that when no stall is produced, the run should be much quicker than 30
> > > seconds (at least it was in my setup), which would be the majority of the runs.
> >
> > Ah, thank you for the clarification!
> Thank both of you for the information. In my setup (PPC cloud VM), the
> majority of the runs complete at least for 50 seconds. From last
> evening to this morning (Beijing Time), following experiments have
> been done:
> 1) torture mainline: the test quickly finished by hitting "rcu_sched
> self-detected stall" after 12 runs
> 2) torture v5.17: the test last 10 hours plus 14 minutes, 702 runs
> have been done without trigger the bug
>
> Conclusion:
> There must be a commit that causes the bug as Paul has pointed out.
> I am going to do the bisect, and estimate to locate the bug within a
> week (at most).
> This is a good learning experience, thanks for the guidance ;-)
Very good, and looking forward to seeing what you find.
Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-07 17:55 ` Paul E. McKenney
@ 2022-04-07 23:14 ` Zhouyi Zhou
-1 siblings, 0 replies; 50+ messages in thread
From: Zhouyi Zhou @ 2022-04-07 23:14 UTC (permalink / raw)
To: Paul E. McKenney; +Cc: Miguel Ojeda, linuxppc-dev, rcu, Zhouyi Zhou
Dear Paul and Miguel
On Fri, Apr 8, 2022 at 1:55 AM Paul E. McKenney <paulmck@kernel.org> wrote:
>
> On Thu, Apr 07, 2022 at 07:05:58PM +0200, Miguel Ojeda wrote:
> > On Thu, Apr 7, 2022 at 5:15 PM Paul E. McKenney <paulmck@kernel.org> wrote:
> > >
> > > Ah. So you would instead look for boot to have completed within 10
> > > seconds? Either way, reliable automation might well more important than
> > > reduction in time.
> >
> > No (although I guess that could be an option), I was only pointing out
> > that when no stall is produced, the run should be much quicker than 30
> > seconds (at least it was in my setup), which would be the majority of the runs.
>
> Ah, thank you for the clarification!
Thank both of you for the information. In my setup (PPC cloud VM), the
majority of the runs complete at least for 50 seconds. From last
evening to this morning (Beijing Time), following experiments have
been done:
1) torture mainline: the test quickly finished by hitting "rcu_sched
self-detected stall" after 12 runs
2) torture v5.17: the test last 10 hours plus 14 minutes, 702 runs
have been done without trigger the bug
Conclusion:
There must be a commit that causes the bug as Paul has pointed out.
I am going to do the bisect, and estimate to locate the bug within a
week (at most).
This is a good learning experience, thanks for the guidance ;-)
Kind Regards
Zhouyi
>
> Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-07 23:14 ` Zhouyi Zhou
0 siblings, 0 replies; 50+ messages in thread
From: Zhouyi Zhou @ 2022-04-07 23:14 UTC (permalink / raw)
To: Paul E. McKenney; +Cc: rcu, Miguel Ojeda, linuxppc-dev, Zhouyi Zhou
Dear Paul and Miguel
On Fri, Apr 8, 2022 at 1:55 AM Paul E. McKenney <paulmck@kernel.org> wrote:
>
> On Thu, Apr 07, 2022 at 07:05:58PM +0200, Miguel Ojeda wrote:
> > On Thu, Apr 7, 2022 at 5:15 PM Paul E. McKenney <paulmck@kernel.org> wrote:
> > >
> > > Ah. So you would instead look for boot to have completed within 10
> > > seconds? Either way, reliable automation might well more important than
> > > reduction in time.
> >
> > No (although I guess that could be an option), I was only pointing out
> > that when no stall is produced, the run should be much quicker than 30
> > seconds (at least it was in my setup), which would be the majority of the runs.
>
> Ah, thank you for the clarification!
Thank both of you for the information. In my setup (PPC cloud VM), the
majority of the runs complete at least for 50 seconds. From last
evening to this morning (Beijing Time), following experiments have
been done:
1) torture mainline: the test quickly finished by hitting "rcu_sched
self-detected stall" after 12 runs
2) torture v5.17: the test last 10 hours plus 14 minutes, 702 runs
have been done without trigger the bug
Conclusion:
There must be a commit that causes the bug as Paul has pointed out.
I am going to do the bisect, and estimate to locate the bug within a
week (at most).
This is a good learning experience, thanks for the guidance ;-)
Kind Regards
Zhouyi
>
> Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-07 17:05 ` Miguel Ojeda
@ 2022-04-07 17:55 ` Paul E. McKenney
-1 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-07 17:55 UTC (permalink / raw)
To: Miguel Ojeda; +Cc: Zhouyi Zhou, linuxppc-dev, rcu
On Thu, Apr 07, 2022 at 07:05:58PM +0200, Miguel Ojeda wrote:
> On Thu, Apr 7, 2022 at 5:15 PM Paul E. McKenney <paulmck@kernel.org> wrote:
> >
> > Ah. So you would instead look for boot to have completed within 10
> > seconds? Either way, reliable automation might well more important than
> > reduction in time.
>
> No (although I guess that could be an option), I was only pointing out
> that when no stall is produced, the run should be much quicker than 30
> seconds (at least it was in my setup), which would be the majority of the runs.
Ah, thank you for the clarification!
Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-07 17:55 ` Paul E. McKenney
0 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-07 17:55 UTC (permalink / raw)
To: Miguel Ojeda; +Cc: rcu, Zhouyi Zhou, linuxppc-dev
On Thu, Apr 07, 2022 at 07:05:58PM +0200, Miguel Ojeda wrote:
> On Thu, Apr 7, 2022 at 5:15 PM Paul E. McKenney <paulmck@kernel.org> wrote:
> >
> > Ah. So you would instead look for boot to have completed within 10
> > seconds? Either way, reliable automation might well more important than
> > reduction in time.
>
> No (although I guess that could be an option), I was only pointing out
> that when no stall is produced, the run should be much quicker than 30
> seconds (at least it was in my setup), which would be the majority of the runs.
Ah, thank you for the clarification!
Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-07 15:15 ` Paul E. McKenney
@ 2022-04-07 17:05 ` Miguel Ojeda
-1 siblings, 0 replies; 50+ messages in thread
From: Miguel Ojeda @ 2022-04-07 17:05 UTC (permalink / raw)
To: Paul E. McKenney; +Cc: Zhouyi Zhou, linuxppc-dev, rcu
On Thu, Apr 7, 2022 at 5:15 PM Paul E. McKenney <paulmck@kernel.org> wrote:
>
> Ah. So you would instead look for boot to have completed within 10
> seconds? Either way, reliable automation might well more important than
> reduction in time.
No (although I guess that could be an option), I was only pointing out
that when no stall is produced, the run should be much quicker than 30
seconds (at least it was in my setup), which would be the majority of the runs.
Cheers,
Miguel
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-07 17:05 ` Miguel Ojeda
0 siblings, 0 replies; 50+ messages in thread
From: Miguel Ojeda @ 2022-04-07 17:05 UTC (permalink / raw)
To: Paul E. McKenney; +Cc: rcu, Zhouyi Zhou, linuxppc-dev
On Thu, Apr 7, 2022 at 5:15 PM Paul E. McKenney <paulmck@kernel.org> wrote:
>
> Ah. So you would instead look for boot to have completed within 10
> seconds? Either way, reliable automation might well more important than
> reduction in time.
No (although I guess that could be an option), I was only pointing out
that when no stall is produced, the run should be much quicker than 30
seconds (at least it was in my setup), which would be the majority of the runs.
Cheers,
Miguel
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-07 10:07 ` Miguel Ojeda
@ 2022-04-07 15:15 ` Paul E. McKenney
-1 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-07 15:15 UTC (permalink / raw)
To: Miguel Ojeda; +Cc: Zhouyi Zhou, linuxppc-dev, rcu
On Thu, Apr 07, 2022 at 12:07:34PM +0200, Miguel Ojeda wrote:
> On Thu, Apr 7, 2022 at 4:27 AM Zhouyi Zhou <zhouzhouyi@gmail.com> wrote:
> >
> > Yes, this happens within 30 seconds after kernel boot. If we take all
> > into account (qemu preparing, kernel loading), we can do one test
> > within 54 seconds.
>
> When it does not trigger, the run should be 20 seconds quicker than
> that (e.g. 10 seconds), since we don't wait for the stall timeout. I
> guess the timeout could also be reduced a fair bit to make failures
> quicker, but they do not contribute as much as the successes anyway.
Ah. So you would instead look for boot to have completed within 10
seconds? Either way, reliable automation might well more important than
reduction in time.
> Thanks a lot for running the bisect on that server, Zhouyi!
What Miguel said!
Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-07 15:15 ` Paul E. McKenney
0 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-07 15:15 UTC (permalink / raw)
To: Miguel Ojeda; +Cc: rcu, Zhouyi Zhou, linuxppc-dev
On Thu, Apr 07, 2022 at 12:07:34PM +0200, Miguel Ojeda wrote:
> On Thu, Apr 7, 2022 at 4:27 AM Zhouyi Zhou <zhouzhouyi@gmail.com> wrote:
> >
> > Yes, this happens within 30 seconds after kernel boot. If we take all
> > into account (qemu preparing, kernel loading), we can do one test
> > within 54 seconds.
>
> When it does not trigger, the run should be 20 seconds quicker than
> that (e.g. 10 seconds), since we don't wait for the stall timeout. I
> guess the timeout could also be reduced a fair bit to make failures
> quicker, but they do not contribute as much as the successes anyway.
Ah. So you would instead look for boot to have completed within 10
seconds? Either way, reliable automation might well more important than
reduction in time.
> Thanks a lot for running the bisect on that server, Zhouyi!
What Miguel said!
Thanx, Paul
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-07 2:26 ` Zhouyi Zhou
@ 2022-04-07 10:07 ` Miguel Ojeda
-1 siblings, 0 replies; 50+ messages in thread
From: Miguel Ojeda @ 2022-04-07 10:07 UTC (permalink / raw)
To: Zhouyi Zhou; +Cc: Paul E. McKenney, linuxppc-dev, rcu
On Thu, Apr 7, 2022 at 4:27 AM Zhouyi Zhou <zhouzhouyi@gmail.com> wrote:
>
> Yes, this happens within 30 seconds after kernel boot. If we take all
> into account (qemu preparing, kernel loading), we can do one test
> within 54 seconds.
When it does not trigger, the run should be 20 seconds quicker than
that (e.g. 10 seconds), since we don't wait for the stall timeout. I
guess the timeout could also be reduced a fair bit to make failures
quicker, but they do not contribute as much as the successes anyway.
Thanks a lot for running the bisect on that server, Zhouyi!
Cheers,
Miguel
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-07 10:07 ` Miguel Ojeda
0 siblings, 0 replies; 50+ messages in thread
From: Miguel Ojeda @ 2022-04-07 10:07 UTC (permalink / raw)
To: Zhouyi Zhou; +Cc: rcu, linuxppc-dev, Paul E. McKenney
On Thu, Apr 7, 2022 at 4:27 AM Zhouyi Zhou <zhouzhouyi@gmail.com> wrote:
>
> Yes, this happens within 30 seconds after kernel boot. If we take all
> into account (qemu preparing, kernel loading), we can do one test
> within 54 seconds.
When it does not trigger, the run should be 20 seconds quicker than
that (e.g. 10 seconds), since we don't wait for the stall timeout. I
guess the timeout could also be reduced a fair bit to make failures
quicker, but they do not contribute as much as the successes anyway.
Thanks a lot for running the bisect on that server, Zhouyi!
Cheers,
Miguel
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-06 19:50 ` Paul E. McKenney
@ 2022-04-07 2:26 ` Zhouyi Zhou
-1 siblings, 0 replies; 50+ messages in thread
From: Zhouyi Zhou @ 2022-04-07 2:26 UTC (permalink / raw)
To: Paul E. McKenney; +Cc: Miguel Ojeda, linuxppc-dev, rcu, Zhouyi Zhou
Hi Paul
On Thu, Apr 7, 2022 at 3:50 AM Paul E. McKenney <paulmck@kernel.org> wrote:
>
> On Thu, Apr 07, 2022 at 02:25:59AM +0800, Zhouyi Zhou wrote:
> > Hi Paul
> >
> > On Thu, Apr 7, 2022 at 1:00 AM Paul E. McKenney <paulmck@kernel.org> wrote:
> > >
> > > On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> > > > Hi
> > > >
> > > > I can reproduce it in a ppc virtual cloud server provided by Oregon
> > > > State University. Following is what I do:
> > > > 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> > > > -o linux-5.18-rc1.tar.gz
> > > > 2) tar zxf linux-5.18-rc1.tar.gz
> > > > 3) cp config linux-5.18-rc1/.config
> > > > 4) cd linux-5.18-rc1
> > > > 5) make vmlinux -j 8
> > > > 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> > > > -smp 2 (QEMU 4.2.1)
> > > > 7) after 12 rounds, the bug got reproduced:
> > > > (http://154.223.142.244/logs/20220406/qemu.log.txt)
> > >
> > > Just to make sure, are you both seeing the same thing? Last I knew,
> > > Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> > > built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> > > I miss something?
> > We are both seeing the same thing, I work in parallel.
> > 1) I am chasing the RCU-tasks issue which I will report my discoveries
> > to you later.
> > 2) I am reproducing the RCU CPU stall issue reported by Miguel
> > yesterday. Lucky enough, I can reproduce it and thanks to Oregon State
> > University who provides me with the environment! I am also very
> > interested in helping chase the reason behind the issue. Lucky enough
> > the issue can be reproduced in a non-hardware accelerated qemu
> > environment so that I can give a hand.
>
> How quickly does this happen? The console log that Miguel sent had
> within 30 seconds of boot. If it always happens this quickly, it
Yes, this happens within 30 seconds after kernel boot. If we take all
into account (qemu preparing, kernel loading), we can do one test
within 54 seconds.
> should be possible to do a bisection, especially when running qemu.
Thank you for your guidance! I will do it.
> The trick would be to boot a given commit until you see it fail on the
> one hand or until it boots successfully 70 times. In the latter case,
> report success to "git bisect", in the former case report failure.
Yes, I will do it.
> If the one-out-of-5 failure rate is accurate, you will have a 99.997%
> chance of reporting the correct failure state on each step, resulting
> in better than a 99.9% chance of converging on the correct commit.
Agree, I have learned that probability from your book.
>
> Of course, you would hit the preceding commit hard to double-check.
Agree
>
> Does this seem reasonable? Or am I being overly optimstic on the
> failure times?
This is very reasonable, I have written a test script (based on the
script I used to test RCU-tasks issue), and will perform the bisection
in the coming days.
#!/bin/sh
if [ "$#" -ne 1 ]; then
echo "Usage: test.sh kernel"
exit
fi
COUNTER=0
while [ $COUNTER -lt 1000 ] ; do
mv /tmp/console.log /tmp/console.log.orig
echo $COUNTER > /tmp/console.log
date
qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
-smp 2 -serial file:/tmp/console.log -m 2048 -append "console=ttyS0"&
qemu_pid=$!
echo "Start round $COUNTER"
while true ; do
if grep -q "rcu_sched self-detected stall" /tmp/console.log;
then
echo "find rcu_sched detected stalls"
break
fi
if grep -q "Unable to mount root fs" /tmp/console.log;
then
echo "kernel test round $COUNTER finish"
break
fi
sleep 1
done
kill $qemu_pid
if grep -q "rcu_sched self-detected stall" /tmp/console.log;
then
echo $COUNTER
exit
fi
COUNTER=$(($COUNTER+1))
done
Thanks
Zhouyi
>
> Thanx, Paul
>
> > Thanks
> > Zhouyi
> > >
> > > Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> > > kthread slept for three milliseconds, but did not wake up for more than
> > > 20 seconds. This kthread would normally have awakened on CPU 1, but
> > > CPU 1 looks to me to be very unhealthy, as can be seen in your console
> > > output below (but maybe my idea of what is healthy for powerpc systems
> > > is outdated). Please see also the inline annotations.
> > >
> > > Thoughts from the PPC guys?
> > >
> > > Thanx, Paul
> > >
> > > ------------------------------------------------------------------------
> > >
> > > [ 21.186912] rcu: INFO: rcu_sched self-detected stall on CPU
> > > [ 21.187331] rcu: 1-...!: (4712629 ticks this GP) idle=2c1/0/0x3 softirq=8/8 fqs=0
> > > [ 21.187529] (t=21000 jiffies g=-1183 q=3)
> > > [ 21.187681] rcu: rcu_sched kthread timer wakeup didn't happen for 20997 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
> > >
> > > The grace-period kthread is still asleep (->state=0x402).
> > > This indicates that the three-jiffy timer has somehow been
> > > prevented from expiring for almost a full 21 seconds. Of course,
> > > if timers don't work, RCU cannot work.
> > >
> > > [ 21.187770] rcu: Possible timer handling issue on cpu=1 timer-softirq=1
> > > [ 21.187927] rcu: rcu_sched kthread starved for 21001 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
> > > [ 21.188019] rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
> > > [ 21.188087] rcu: RCU grace-period kthread stack dump:
> > > [ 21.188196] task:rcu_sched state:I stack: 0 pid: 10 ppid: 2 flags:0x00000800
> > > [ 21.188453] Call Trace:
> > > [ 21.188525] [c0000000061e78a0] [c0000000061e78e0] 0xc0000000061e78e0 (unreliable)
> > > [ 21.188900] [c0000000061e7a90] [c000000000017210] __switch_to+0x250/0x310
> > > [ 21.189210] [c0000000061e7b00] [c0000000003ed660] __schedule+0x210/0x660
> > > [ 21.189315] [c0000000061e7b80] [c0000000003edb14] schedule+0x64/0x110
> > > [ 21.189387] [c0000000061e7bb0] [c0000000003f6648] schedule_timeout+0x1d8/0x390
> > > [ 21.189473] [c0000000061e7c80] [c00000000011111c] rcu_gp_fqs_loop+0x2dc/0x3d0
> > > [ 21.189555] [c0000000061e7d30] [c0000000001144ec] rcu_gp_kthread+0x13c/0x160
> > > [ 21.189633] [c0000000061e7dc0] [c0000000000c1770] kthread+0x110/0x120
> > > [ 21.189714] [c0000000061e7e10] [c00000000000c9e4] ret_from_kernel_thread+0x5c/0x64
> > >
> > > The above stack trace is expected behavior when the RCU
> > > grace-period kthread is waiting to do its next FQS scan.
> > >
> > > [ 21.189938] rcu: Stack dump where RCU GP kthread last ran:
> > >
> > > And here is the stalled CPU, which also happens to be the CPU
> > > that RCU last ran on:
> > >
> > > [ 21.189992] Task dump for CPU 1:
> > > [ 21.190059] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
> > > [ 21.190169] Call Trace:
> > > [ 21.190194] [c0000000061ef2d0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
> > > [ 21.190278] [c0000000061ef340] [c000000000116ca0] rcu_check_gp_kthread_starvation+0x16c/0x19c
> > > [ 21.190370] [c0000000061ef3c0] [c000000000114f7c] rcu_sched_clock_irq+0x7ec/0xaf0
> > > [ 21.190448] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
> > > [ 21.190524] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
> > > [ 21.190608] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
> > > [ 21.190699] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > > [ 21.190837] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
> > >
> > > Up through this point is just the stack trace of the the
> > > code doing the stack dump that the RCU CPU stall warning code
> > > asked for.
> > >
> > > [ 21.190941] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
> > >
> > > This NIP does not look at all good to me. But I freely confess
> > > that I am out of date on what Power machines do.
> > >
> > > [ 21.191031] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
> > > [ 21.191109] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
> > > [ 21.191274] CFAR: 0000000000000000 IRQMASK: 0
> > > [ 21.191274] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
> > > [ 21.191274] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
> > > [ 21.191274] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
> > > [ 21.191274] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
> > > [ 21.191274] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
> > > [ 21.191274] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
> > > [ 21.191274] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
> > > [ 21.191274] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
> > > [ 21.191932] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
> > > [ 21.192024] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
> > > [ 21.192118] --- interrupt: 900
> > > [ 21.192158] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
> > > [ 21.192227] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
> > > [ 21.192307] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
> > > [ 21.192397] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > > [ 21.192495] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> > > [ 21.192566] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
> > > [ 21.192615] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
> > > [ 21.192659] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
> > > [ 21.192755] CFAR: 0000000000000000 IRQMASK: 0
> > > [ 21.192755] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
> > > [ 21.192755] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
> > > [ 21.192755] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
> > > [ 21.192755] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
> > > [ 21.192755] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
> > > [ 21.192755] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
> > > [ 21.192755] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
> > > [ 21.192755] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
> > > [ 21.193290] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
> > > [ 21.193363] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
> > > [ 21.193428] --- interrupt: 900
> > > [ 21.193457] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
> > > [ 21.193512] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
> > > [ 21.193590] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
> > > [ 21.193679] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
> > > [ 21.193747] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
> > > [ 21.193901] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
> > > [ 21.194002] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x14
> > > [ 21.194245] Task dump for CPU 1:
> > > [ 21.194284] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
> > > [ 21.194374] Call Trace:
> > > [ 21.194400] [c0000000061ef2b0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
> > > [ 21.194479] [c0000000061ef320] [c000000000116df8] rcu_dump_cpu_stacks+0x128/0x188
> > > [ 21.194567] [c0000000061ef3c0] [c000000000114f9c] rcu_sched_clock_irq+0x80c/0xaf0
> > > [ 21.194642] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
> > > [ 21.194712] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
> > > [ 21.194828] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
> > > [ 21.194942] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > > [ 21.195035] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
> > > [ 21.195104] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
> > > [ 21.195152] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
> > > [ 21.195199] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
> > > [ 21.195296] CFAR: 0000000000000000 IRQMASK: 0
> > > [ 21.195296] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
> > > [ 21.195296] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
> > > [ 21.195296] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
> > > [ 21.195296] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
> > > [ 21.195296] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
> > > [ 21.195296] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
> > > [ 21.195296] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
> > > [ 21.195296] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
> > > [ 21.195850] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
> > > [ 21.195944] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
> > > [ 21.196027] --- interrupt: 900
> > > [ 21.196056] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
> > > [ 21.196119] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
> > > [ 21.196192] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
> > > [ 21.196282] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > > [ 21.196373] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> > > [ 21.196439] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
> > > [ 21.196489] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
> > > [ 21.196534] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
> > > [ 21.196627] CFAR: 0000000000000000 IRQMASK: 0
> > > [ 21.196627] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
> > > [ 21.196627] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
> > > [ 21.196627] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
> > > [ 21.196627] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
> > > [ 21.196627] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
> > > [ 21.196627] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
> > > [ 21.196627] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
> > > [ 21.196627] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
> > > [ 21.197168] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
> > > [ 21.197239] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
> > > [ 21.197305] --- interrupt: 900
> > > [ 21.197333] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
> > > [ 21.197390] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
> > > [ 21.197470] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
> > > [ 21.197556] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
> > > [ 21.197620] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
> > > [ 21.197696] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
> > > [ 21.197820] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x1I4
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-07 2:26 ` Zhouyi Zhou
0 siblings, 0 replies; 50+ messages in thread
From: Zhouyi Zhou @ 2022-04-07 2:26 UTC (permalink / raw)
To: Paul E. McKenney; +Cc: rcu, Miguel Ojeda, linuxppc-dev, Zhouyi Zhou
Hi Paul
On Thu, Apr 7, 2022 at 3:50 AM Paul E. McKenney <paulmck@kernel.org> wrote:
>
> On Thu, Apr 07, 2022 at 02:25:59AM +0800, Zhouyi Zhou wrote:
> > Hi Paul
> >
> > On Thu, Apr 7, 2022 at 1:00 AM Paul E. McKenney <paulmck@kernel.org> wrote:
> > >
> > > On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> > > > Hi
> > > >
> > > > I can reproduce it in a ppc virtual cloud server provided by Oregon
> > > > State University. Following is what I do:
> > > > 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> > > > -o linux-5.18-rc1.tar.gz
> > > > 2) tar zxf linux-5.18-rc1.tar.gz
> > > > 3) cp config linux-5.18-rc1/.config
> > > > 4) cd linux-5.18-rc1
> > > > 5) make vmlinux -j 8
> > > > 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> > > > -smp 2 (QEMU 4.2.1)
> > > > 7) after 12 rounds, the bug got reproduced:
> > > > (http://154.223.142.244/logs/20220406/qemu.log.txt)
> > >
> > > Just to make sure, are you both seeing the same thing? Last I knew,
> > > Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> > > built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> > > I miss something?
> > We are both seeing the same thing, I work in parallel.
> > 1) I am chasing the RCU-tasks issue which I will report my discoveries
> > to you later.
> > 2) I am reproducing the RCU CPU stall issue reported by Miguel
> > yesterday. Lucky enough, I can reproduce it and thanks to Oregon State
> > University who provides me with the environment! I am also very
> > interested in helping chase the reason behind the issue. Lucky enough
> > the issue can be reproduced in a non-hardware accelerated qemu
> > environment so that I can give a hand.
>
> How quickly does this happen? The console log that Miguel sent had
> within 30 seconds of boot. If it always happens this quickly, it
Yes, this happens within 30 seconds after kernel boot. If we take all
into account (qemu preparing, kernel loading), we can do one test
within 54 seconds.
> should be possible to do a bisection, especially when running qemu.
Thank you for your guidance! I will do it.
> The trick would be to boot a given commit until you see it fail on the
> one hand or until it boots successfully 70 times. In the latter case,
> report success to "git bisect", in the former case report failure.
Yes, I will do it.
> If the one-out-of-5 failure rate is accurate, you will have a 99.997%
> chance of reporting the correct failure state on each step, resulting
> in better than a 99.9% chance of converging on the correct commit.
Agree, I have learned that probability from your book.
>
> Of course, you would hit the preceding commit hard to double-check.
Agree
>
> Does this seem reasonable? Or am I being overly optimstic on the
> failure times?
This is very reasonable, I have written a test script (based on the
script I used to test RCU-tasks issue), and will perform the bisection
in the coming days.
#!/bin/sh
if [ "$#" -ne 1 ]; then
echo "Usage: test.sh kernel"
exit
fi
COUNTER=0
while [ $COUNTER -lt 1000 ] ; do
mv /tmp/console.log /tmp/console.log.orig
echo $COUNTER > /tmp/console.log
date
qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
-smp 2 -serial file:/tmp/console.log -m 2048 -append "console=ttyS0"&
qemu_pid=$!
echo "Start round $COUNTER"
while true ; do
if grep -q "rcu_sched self-detected stall" /tmp/console.log;
then
echo "find rcu_sched detected stalls"
break
fi
if grep -q "Unable to mount root fs" /tmp/console.log;
then
echo "kernel test round $COUNTER finish"
break
fi
sleep 1
done
kill $qemu_pid
if grep -q "rcu_sched self-detected stall" /tmp/console.log;
then
echo $COUNTER
exit
fi
COUNTER=$(($COUNTER+1))
done
Thanks
Zhouyi
>
> Thanx, Paul
>
> > Thanks
> > Zhouyi
> > >
> > > Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> > > kthread slept for three milliseconds, but did not wake up for more than
> > > 20 seconds. This kthread would normally have awakened on CPU 1, but
> > > CPU 1 looks to me to be very unhealthy, as can be seen in your console
> > > output below (but maybe my idea of what is healthy for powerpc systems
> > > is outdated). Please see also the inline annotations.
> > >
> > > Thoughts from the PPC guys?
> > >
> > > Thanx, Paul
> > >
> > > ------------------------------------------------------------------------
> > >
> > > [ 21.186912] rcu: INFO: rcu_sched self-detected stall on CPU
> > > [ 21.187331] rcu: 1-...!: (4712629 ticks this GP) idle=2c1/0/0x3 softirq=8/8 fqs=0
> > > [ 21.187529] (t=21000 jiffies g=-1183 q=3)
> > > [ 21.187681] rcu: rcu_sched kthread timer wakeup didn't happen for 20997 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
> > >
> > > The grace-period kthread is still asleep (->state=0x402).
> > > This indicates that the three-jiffy timer has somehow been
> > > prevented from expiring for almost a full 21 seconds. Of course,
> > > if timers don't work, RCU cannot work.
> > >
> > > [ 21.187770] rcu: Possible timer handling issue on cpu=1 timer-softirq=1
> > > [ 21.187927] rcu: rcu_sched kthread starved for 21001 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
> > > [ 21.188019] rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
> > > [ 21.188087] rcu: RCU grace-period kthread stack dump:
> > > [ 21.188196] task:rcu_sched state:I stack: 0 pid: 10 ppid: 2 flags:0x00000800
> > > [ 21.188453] Call Trace:
> > > [ 21.188525] [c0000000061e78a0] [c0000000061e78e0] 0xc0000000061e78e0 (unreliable)
> > > [ 21.188900] [c0000000061e7a90] [c000000000017210] __switch_to+0x250/0x310
> > > [ 21.189210] [c0000000061e7b00] [c0000000003ed660] __schedule+0x210/0x660
> > > [ 21.189315] [c0000000061e7b80] [c0000000003edb14] schedule+0x64/0x110
> > > [ 21.189387] [c0000000061e7bb0] [c0000000003f6648] schedule_timeout+0x1d8/0x390
> > > [ 21.189473] [c0000000061e7c80] [c00000000011111c] rcu_gp_fqs_loop+0x2dc/0x3d0
> > > [ 21.189555] [c0000000061e7d30] [c0000000001144ec] rcu_gp_kthread+0x13c/0x160
> > > [ 21.189633] [c0000000061e7dc0] [c0000000000c1770] kthread+0x110/0x120
> > > [ 21.189714] [c0000000061e7e10] [c00000000000c9e4] ret_from_kernel_thread+0x5c/0x64
> > >
> > > The above stack trace is expected behavior when the RCU
> > > grace-period kthread is waiting to do its next FQS scan.
> > >
> > > [ 21.189938] rcu: Stack dump where RCU GP kthread last ran:
> > >
> > > And here is the stalled CPU, which also happens to be the CPU
> > > that RCU last ran on:
> > >
> > > [ 21.189992] Task dump for CPU 1:
> > > [ 21.190059] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
> > > [ 21.190169] Call Trace:
> > > [ 21.190194] [c0000000061ef2d0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
> > > [ 21.190278] [c0000000061ef340] [c000000000116ca0] rcu_check_gp_kthread_starvation+0x16c/0x19c
> > > [ 21.190370] [c0000000061ef3c0] [c000000000114f7c] rcu_sched_clock_irq+0x7ec/0xaf0
> > > [ 21.190448] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
> > > [ 21.190524] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
> > > [ 21.190608] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
> > > [ 21.190699] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > > [ 21.190837] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
> > >
> > > Up through this point is just the stack trace of the the
> > > code doing the stack dump that the RCU CPU stall warning code
> > > asked for.
> > >
> > > [ 21.190941] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
> > >
> > > This NIP does not look at all good to me. But I freely confess
> > > that I am out of date on what Power machines do.
> > >
> > > [ 21.191031] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
> > > [ 21.191109] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
> > > [ 21.191274] CFAR: 0000000000000000 IRQMASK: 0
> > > [ 21.191274] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
> > > [ 21.191274] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
> > > [ 21.191274] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
> > > [ 21.191274] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
> > > [ 21.191274] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
> > > [ 21.191274] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
> > > [ 21.191274] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
> > > [ 21.191274] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
> > > [ 21.191932] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
> > > [ 21.192024] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
> > > [ 21.192118] --- interrupt: 900
> > > [ 21.192158] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
> > > [ 21.192227] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
> > > [ 21.192307] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
> > > [ 21.192397] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > > [ 21.192495] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> > > [ 21.192566] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
> > > [ 21.192615] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
> > > [ 21.192659] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
> > > [ 21.192755] CFAR: 0000000000000000 IRQMASK: 0
> > > [ 21.192755] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
> > > [ 21.192755] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
> > > [ 21.192755] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
> > > [ 21.192755] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
> > > [ 21.192755] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
> > > [ 21.192755] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
> > > [ 21.192755] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
> > > [ 21.192755] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
> > > [ 21.193290] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
> > > [ 21.193363] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
> > > [ 21.193428] --- interrupt: 900
> > > [ 21.193457] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
> > > [ 21.193512] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
> > > [ 21.193590] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
> > > [ 21.193679] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
> > > [ 21.193747] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
> > > [ 21.193901] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
> > > [ 21.194002] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x14
> > > [ 21.194245] Task dump for CPU 1:
> > > [ 21.194284] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
> > > [ 21.194374] Call Trace:
> > > [ 21.194400] [c0000000061ef2b0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
> > > [ 21.194479] [c0000000061ef320] [c000000000116df8] rcu_dump_cpu_stacks+0x128/0x188
> > > [ 21.194567] [c0000000061ef3c0] [c000000000114f9c] rcu_sched_clock_irq+0x80c/0xaf0
> > > [ 21.194642] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
> > > [ 21.194712] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
> > > [ 21.194828] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
> > > [ 21.194942] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > > [ 21.195035] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
> > > [ 21.195104] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
> > > [ 21.195152] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
> > > [ 21.195199] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
> > > [ 21.195296] CFAR: 0000000000000000 IRQMASK: 0
> > > [ 21.195296] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
> > > [ 21.195296] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
> > > [ 21.195296] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
> > > [ 21.195296] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
> > > [ 21.195296] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
> > > [ 21.195296] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
> > > [ 21.195296] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
> > > [ 21.195296] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
> > > [ 21.195850] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
> > > [ 21.195944] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
> > > [ 21.196027] --- interrupt: 900
> > > [ 21.196056] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
> > > [ 21.196119] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
> > > [ 21.196192] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
> > > [ 21.196282] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > > [ 21.196373] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> > > [ 21.196439] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
> > > [ 21.196489] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
> > > [ 21.196534] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
> > > [ 21.196627] CFAR: 0000000000000000 IRQMASK: 0
> > > [ 21.196627] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
> > > [ 21.196627] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
> > > [ 21.196627] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
> > > [ 21.196627] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
> > > [ 21.196627] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
> > > [ 21.196627] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
> > > [ 21.196627] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
> > > [ 21.196627] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
> > > [ 21.197168] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
> > > [ 21.197239] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
> > > [ 21.197305] --- interrupt: 900
> > > [ 21.197333] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
> > > [ 21.197390] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
> > > [ 21.197470] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
> > > [ 21.197556] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
> > > [ 21.197620] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
> > > [ 21.197696] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
> > > [ 21.197820] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x1I4
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-06 18:25 ` Zhouyi Zhou
@ 2022-04-06 19:50 ` Paul E. McKenney
-1 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-06 19:50 UTC (permalink / raw)
To: Zhouyi Zhou; +Cc: rcu, Miguel Ojeda, linuxppc-dev
On Thu, Apr 07, 2022 at 02:25:59AM +0800, Zhouyi Zhou wrote:
> Hi Paul
>
> On Thu, Apr 7, 2022 at 1:00 AM Paul E. McKenney <paulmck@kernel.org> wrote:
> >
> > On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> > > Hi
> > >
> > > I can reproduce it in a ppc virtual cloud server provided by Oregon
> > > State University. Following is what I do:
> > > 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> > > -o linux-5.18-rc1.tar.gz
> > > 2) tar zxf linux-5.18-rc1.tar.gz
> > > 3) cp config linux-5.18-rc1/.config
> > > 4) cd linux-5.18-rc1
> > > 5) make vmlinux -j 8
> > > 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> > > -smp 2 (QEMU 4.2.1)
> > > 7) after 12 rounds, the bug got reproduced:
> > > (http://154.223.142.244/logs/20220406/qemu.log.txt)
> >
> > Just to make sure, are you both seeing the same thing? Last I knew,
> > Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> > built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> > I miss something?
> We are both seeing the same thing, I work in parallel.
> 1) I am chasing the RCU-tasks issue which I will report my discoveries
> to you later.
> 2) I am reproducing the RCU CPU stall issue reported by Miguel
> yesterday. Lucky enough, I can reproduce it and thanks to Oregon State
> University who provides me with the environment! I am also very
> interested in helping chase the reason behind the issue. Lucky enough
> the issue can be reproduced in a non-hardware accelerated qemu
> environment so that I can give a hand.
How quickly does this happen? The console log that Miguel sent had
within 30 seconds of boot. If it always happens this quickly, it
should be possible to do a bisection, especially when running qemu.
The trick would be to boot a given commit until you see it fail on the
one hand or until it boots successfully 70 times. In the latter case,
report success to "git bisect", in the former case report failure.
If the one-out-of-5 failure rate is accurate, you will have a 99.997%
chance of reporting the correct failure state on each step, resulting
in better than a 99.9% chance of converging on the correct commit.
Of course, you would hit the preceding commit hard to double-check.
Does this seem reasonable? Or am I being overly optimstic on the
failure times?
Thanx, Paul
> Thanks
> Zhouyi
> >
> > Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> > kthread slept for three milliseconds, but did not wake up for more than
> > 20 seconds. This kthread would normally have awakened on CPU 1, but
> > CPU 1 looks to me to be very unhealthy, as can be seen in your console
> > output below (but maybe my idea of what is healthy for powerpc systems
> > is outdated). Please see also the inline annotations.
> >
> > Thoughts from the PPC guys?
> >
> > Thanx, Paul
> >
> > ------------------------------------------------------------------------
> >
> > [ 21.186912] rcu: INFO: rcu_sched self-detected stall on CPU
> > [ 21.187331] rcu: 1-...!: (4712629 ticks this GP) idle=2c1/0/0x3 softirq=8/8 fqs=0
> > [ 21.187529] (t=21000 jiffies g=-1183 q=3)
> > [ 21.187681] rcu: rcu_sched kthread timer wakeup didn't happen for 20997 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
> >
> > The grace-period kthread is still asleep (->state=0x402).
> > This indicates that the three-jiffy timer has somehow been
> > prevented from expiring for almost a full 21 seconds. Of course,
> > if timers don't work, RCU cannot work.
> >
> > [ 21.187770] rcu: Possible timer handling issue on cpu=1 timer-softirq=1
> > [ 21.187927] rcu: rcu_sched kthread starved for 21001 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
> > [ 21.188019] rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
> > [ 21.188087] rcu: RCU grace-period kthread stack dump:
> > [ 21.188196] task:rcu_sched state:I stack: 0 pid: 10 ppid: 2 flags:0x00000800
> > [ 21.188453] Call Trace:
> > [ 21.188525] [c0000000061e78a0] [c0000000061e78e0] 0xc0000000061e78e0 (unreliable)
> > [ 21.188900] [c0000000061e7a90] [c000000000017210] __switch_to+0x250/0x310
> > [ 21.189210] [c0000000061e7b00] [c0000000003ed660] __schedule+0x210/0x660
> > [ 21.189315] [c0000000061e7b80] [c0000000003edb14] schedule+0x64/0x110
> > [ 21.189387] [c0000000061e7bb0] [c0000000003f6648] schedule_timeout+0x1d8/0x390
> > [ 21.189473] [c0000000061e7c80] [c00000000011111c] rcu_gp_fqs_loop+0x2dc/0x3d0
> > [ 21.189555] [c0000000061e7d30] [c0000000001144ec] rcu_gp_kthread+0x13c/0x160
> > [ 21.189633] [c0000000061e7dc0] [c0000000000c1770] kthread+0x110/0x120
> > [ 21.189714] [c0000000061e7e10] [c00000000000c9e4] ret_from_kernel_thread+0x5c/0x64
> >
> > The above stack trace is expected behavior when the RCU
> > grace-period kthread is waiting to do its next FQS scan.
> >
> > [ 21.189938] rcu: Stack dump where RCU GP kthread last ran:
> >
> > And here is the stalled CPU, which also happens to be the CPU
> > that RCU last ran on:
> >
> > [ 21.189992] Task dump for CPU 1:
> > [ 21.190059] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
> > [ 21.190169] Call Trace:
> > [ 21.190194] [c0000000061ef2d0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
> > [ 21.190278] [c0000000061ef340] [c000000000116ca0] rcu_check_gp_kthread_starvation+0x16c/0x19c
> > [ 21.190370] [c0000000061ef3c0] [c000000000114f7c] rcu_sched_clock_irq+0x7ec/0xaf0
> > [ 21.190448] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
> > [ 21.190524] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
> > [ 21.190608] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
> > [ 21.190699] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > [ 21.190837] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
> >
> > Up through this point is just the stack trace of the the
> > code doing the stack dump that the RCU CPU stall warning code
> > asked for.
> >
> > [ 21.190941] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
> >
> > This NIP does not look at all good to me. But I freely confess
> > that I am out of date on what Power machines do.
> >
> > [ 21.191031] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
> > [ 21.191109] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
> > [ 21.191274] CFAR: 0000000000000000 IRQMASK: 0
> > [ 21.191274] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
> > [ 21.191274] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
> > [ 21.191274] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
> > [ 21.191274] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
> > [ 21.191274] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
> > [ 21.191274] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
> > [ 21.191274] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
> > [ 21.191274] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
> > [ 21.191932] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
> > [ 21.192024] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
> > [ 21.192118] --- interrupt: 900
> > [ 21.192158] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
> > [ 21.192227] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
> > [ 21.192307] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
> > [ 21.192397] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > [ 21.192495] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> > [ 21.192566] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
> > [ 21.192615] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
> > [ 21.192659] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
> > [ 21.192755] CFAR: 0000000000000000 IRQMASK: 0
> > [ 21.192755] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
> > [ 21.192755] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
> > [ 21.192755] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
> > [ 21.192755] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
> > [ 21.192755] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
> > [ 21.192755] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
> > [ 21.192755] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
> > [ 21.192755] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
> > [ 21.193290] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
> > [ 21.193363] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
> > [ 21.193428] --- interrupt: 900
> > [ 21.193457] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
> > [ 21.193512] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
> > [ 21.193590] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
> > [ 21.193679] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
> > [ 21.193747] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
> > [ 21.193901] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
> > [ 21.194002] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x14
> > [ 21.194245] Task dump for CPU 1:
> > [ 21.194284] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
> > [ 21.194374] Call Trace:
> > [ 21.194400] [c0000000061ef2b0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
> > [ 21.194479] [c0000000061ef320] [c000000000116df8] rcu_dump_cpu_stacks+0x128/0x188
> > [ 21.194567] [c0000000061ef3c0] [c000000000114f9c] rcu_sched_clock_irq+0x80c/0xaf0
> > [ 21.194642] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
> > [ 21.194712] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
> > [ 21.194828] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
> > [ 21.194942] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > [ 21.195035] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
> > [ 21.195104] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
> > [ 21.195152] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
> > [ 21.195199] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
> > [ 21.195296] CFAR: 0000000000000000 IRQMASK: 0
> > [ 21.195296] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
> > [ 21.195296] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
> > [ 21.195296] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
> > [ 21.195296] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
> > [ 21.195296] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
> > [ 21.195296] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
> > [ 21.195296] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
> > [ 21.195296] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
> > [ 21.195850] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
> > [ 21.195944] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
> > [ 21.196027] --- interrupt: 900
> > [ 21.196056] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
> > [ 21.196119] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
> > [ 21.196192] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
> > [ 21.196282] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > [ 21.196373] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> > [ 21.196439] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
> > [ 21.196489] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
> > [ 21.196534] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
> > [ 21.196627] CFAR: 0000000000000000 IRQMASK: 0
> > [ 21.196627] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
> > [ 21.196627] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
> > [ 21.196627] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
> > [ 21.196627] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
> > [ 21.196627] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
> > [ 21.196627] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
> > [ 21.196627] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
> > [ 21.196627] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
> > [ 21.197168] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
> > [ 21.197239] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
> > [ 21.197305] --- interrupt: 900
> > [ 21.197333] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
> > [ 21.197390] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
> > [ 21.197470] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
> > [ 21.197556] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
> > [ 21.197620] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
> > [ 21.197696] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
> > [ 21.197820] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x1I4
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-06 19:50 ` Paul E. McKenney
0 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-06 19:50 UTC (permalink / raw)
To: Zhouyi Zhou; +Cc: Miguel Ojeda, linuxppc-dev, rcu
On Thu, Apr 07, 2022 at 02:25:59AM +0800, Zhouyi Zhou wrote:
> Hi Paul
>
> On Thu, Apr 7, 2022 at 1:00 AM Paul E. McKenney <paulmck@kernel.org> wrote:
> >
> > On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> > > Hi
> > >
> > > I can reproduce it in a ppc virtual cloud server provided by Oregon
> > > State University. Following is what I do:
> > > 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> > > -o linux-5.18-rc1.tar.gz
> > > 2) tar zxf linux-5.18-rc1.tar.gz
> > > 3) cp config linux-5.18-rc1/.config
> > > 4) cd linux-5.18-rc1
> > > 5) make vmlinux -j 8
> > > 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> > > -smp 2 (QEMU 4.2.1)
> > > 7) after 12 rounds, the bug got reproduced:
> > > (http://154.223.142.244/logs/20220406/qemu.log.txt)
> >
> > Just to make sure, are you both seeing the same thing? Last I knew,
> > Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> > built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> > I miss something?
> We are both seeing the same thing, I work in parallel.
> 1) I am chasing the RCU-tasks issue which I will report my discoveries
> to you later.
> 2) I am reproducing the RCU CPU stall issue reported by Miguel
> yesterday. Lucky enough, I can reproduce it and thanks to Oregon State
> University who provides me with the environment! I am also very
> interested in helping chase the reason behind the issue. Lucky enough
> the issue can be reproduced in a non-hardware accelerated qemu
> environment so that I can give a hand.
How quickly does this happen? The console log that Miguel sent had
within 30 seconds of boot. If it always happens this quickly, it
should be possible to do a bisection, especially when running qemu.
The trick would be to boot a given commit until you see it fail on the
one hand or until it boots successfully 70 times. In the latter case,
report success to "git bisect", in the former case report failure.
If the one-out-of-5 failure rate is accurate, you will have a 99.997%
chance of reporting the correct failure state on each step, resulting
in better than a 99.9% chance of converging on the correct commit.
Of course, you would hit the preceding commit hard to double-check.
Does this seem reasonable? Or am I being overly optimstic on the
failure times?
Thanx, Paul
> Thanks
> Zhouyi
> >
> > Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> > kthread slept for three milliseconds, but did not wake up for more than
> > 20 seconds. This kthread would normally have awakened on CPU 1, but
> > CPU 1 looks to me to be very unhealthy, as can be seen in your console
> > output below (but maybe my idea of what is healthy for powerpc systems
> > is outdated). Please see also the inline annotations.
> >
> > Thoughts from the PPC guys?
> >
> > Thanx, Paul
> >
> > ------------------------------------------------------------------------
> >
> > [ 21.186912] rcu: INFO: rcu_sched self-detected stall on CPU
> > [ 21.187331] rcu: 1-...!: (4712629 ticks this GP) idle=2c1/0/0x3 softirq=8/8 fqs=0
> > [ 21.187529] (t=21000 jiffies g=-1183 q=3)
> > [ 21.187681] rcu: rcu_sched kthread timer wakeup didn't happen for 20997 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
> >
> > The grace-period kthread is still asleep (->state=0x402).
> > This indicates that the three-jiffy timer has somehow been
> > prevented from expiring for almost a full 21 seconds. Of course,
> > if timers don't work, RCU cannot work.
> >
> > [ 21.187770] rcu: Possible timer handling issue on cpu=1 timer-softirq=1
> > [ 21.187927] rcu: rcu_sched kthread starved for 21001 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
> > [ 21.188019] rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
> > [ 21.188087] rcu: RCU grace-period kthread stack dump:
> > [ 21.188196] task:rcu_sched state:I stack: 0 pid: 10 ppid: 2 flags:0x00000800
> > [ 21.188453] Call Trace:
> > [ 21.188525] [c0000000061e78a0] [c0000000061e78e0] 0xc0000000061e78e0 (unreliable)
> > [ 21.188900] [c0000000061e7a90] [c000000000017210] __switch_to+0x250/0x310
> > [ 21.189210] [c0000000061e7b00] [c0000000003ed660] __schedule+0x210/0x660
> > [ 21.189315] [c0000000061e7b80] [c0000000003edb14] schedule+0x64/0x110
> > [ 21.189387] [c0000000061e7bb0] [c0000000003f6648] schedule_timeout+0x1d8/0x390
> > [ 21.189473] [c0000000061e7c80] [c00000000011111c] rcu_gp_fqs_loop+0x2dc/0x3d0
> > [ 21.189555] [c0000000061e7d30] [c0000000001144ec] rcu_gp_kthread+0x13c/0x160
> > [ 21.189633] [c0000000061e7dc0] [c0000000000c1770] kthread+0x110/0x120
> > [ 21.189714] [c0000000061e7e10] [c00000000000c9e4] ret_from_kernel_thread+0x5c/0x64
> >
> > The above stack trace is expected behavior when the RCU
> > grace-period kthread is waiting to do its next FQS scan.
> >
> > [ 21.189938] rcu: Stack dump where RCU GP kthread last ran:
> >
> > And here is the stalled CPU, which also happens to be the CPU
> > that RCU last ran on:
> >
> > [ 21.189992] Task dump for CPU 1:
> > [ 21.190059] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
> > [ 21.190169] Call Trace:
> > [ 21.190194] [c0000000061ef2d0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
> > [ 21.190278] [c0000000061ef340] [c000000000116ca0] rcu_check_gp_kthread_starvation+0x16c/0x19c
> > [ 21.190370] [c0000000061ef3c0] [c000000000114f7c] rcu_sched_clock_irq+0x7ec/0xaf0
> > [ 21.190448] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
> > [ 21.190524] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
> > [ 21.190608] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
> > [ 21.190699] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > [ 21.190837] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
> >
> > Up through this point is just the stack trace of the the
> > code doing the stack dump that the RCU CPU stall warning code
> > asked for.
> >
> > [ 21.190941] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
> >
> > This NIP does not look at all good to me. But I freely confess
> > that I am out of date on what Power machines do.
> >
> > [ 21.191031] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
> > [ 21.191109] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
> > [ 21.191274] CFAR: 0000000000000000 IRQMASK: 0
> > [ 21.191274] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
> > [ 21.191274] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
> > [ 21.191274] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
> > [ 21.191274] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
> > [ 21.191274] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
> > [ 21.191274] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
> > [ 21.191274] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
> > [ 21.191274] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
> > [ 21.191932] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
> > [ 21.192024] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
> > [ 21.192118] --- interrupt: 900
> > [ 21.192158] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
> > [ 21.192227] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
> > [ 21.192307] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
> > [ 21.192397] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > [ 21.192495] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> > [ 21.192566] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
> > [ 21.192615] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
> > [ 21.192659] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
> > [ 21.192755] CFAR: 0000000000000000 IRQMASK: 0
> > [ 21.192755] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
> > [ 21.192755] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
> > [ 21.192755] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
> > [ 21.192755] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
> > [ 21.192755] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
> > [ 21.192755] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
> > [ 21.192755] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
> > [ 21.192755] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
> > [ 21.193290] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
> > [ 21.193363] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
> > [ 21.193428] --- interrupt: 900
> > [ 21.193457] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
> > [ 21.193512] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
> > [ 21.193590] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
> > [ 21.193679] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
> > [ 21.193747] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
> > [ 21.193901] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
> > [ 21.194002] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x14
> > [ 21.194245] Task dump for CPU 1:
> > [ 21.194284] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
> > [ 21.194374] Call Trace:
> > [ 21.194400] [c0000000061ef2b0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
> > [ 21.194479] [c0000000061ef320] [c000000000116df8] rcu_dump_cpu_stacks+0x128/0x188
> > [ 21.194567] [c0000000061ef3c0] [c000000000114f9c] rcu_sched_clock_irq+0x80c/0xaf0
> > [ 21.194642] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
> > [ 21.194712] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
> > [ 21.194828] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
> > [ 21.194942] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > [ 21.195035] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
> > [ 21.195104] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
> > [ 21.195152] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
> > [ 21.195199] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
> > [ 21.195296] CFAR: 0000000000000000 IRQMASK: 0
> > [ 21.195296] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
> > [ 21.195296] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
> > [ 21.195296] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
> > [ 21.195296] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
> > [ 21.195296] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
> > [ 21.195296] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
> > [ 21.195296] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
> > [ 21.195296] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
> > [ 21.195850] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
> > [ 21.195944] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
> > [ 21.196027] --- interrupt: 900
> > [ 21.196056] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
> > [ 21.196119] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
> > [ 21.196192] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
> > [ 21.196282] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> > [ 21.196373] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> > [ 21.196439] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
> > [ 21.196489] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
> > [ 21.196534] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
> > [ 21.196627] CFAR: 0000000000000000 IRQMASK: 0
> > [ 21.196627] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
> > [ 21.196627] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
> > [ 21.196627] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
> > [ 21.196627] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
> > [ 21.196627] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
> > [ 21.196627] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
> > [ 21.196627] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
> > [ 21.196627] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
> > [ 21.197168] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
> > [ 21.197239] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
> > [ 21.197305] --- interrupt: 900
> > [ 21.197333] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
> > [ 21.197390] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
> > [ 21.197470] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
> > [ 21.197556] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
> > [ 21.197620] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
> > [ 21.197696] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
> > [ 21.197820] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x1I4
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-06 17:00 ` Paul E. McKenney
@ 2022-04-06 18:25 ` Zhouyi Zhou
-1 siblings, 0 replies; 50+ messages in thread
From: Zhouyi Zhou @ 2022-04-06 18:25 UTC (permalink / raw)
To: Paul E. McKenney, Zhouyi Zhou; +Cc: rcu, Miguel Ojeda, linuxppc-dev
Hi Paul
On Thu, Apr 7, 2022 at 1:00 AM Paul E. McKenney <paulmck@kernel.org> wrote:
>
> On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> > Hi
> >
> > I can reproduce it in a ppc virtual cloud server provided by Oregon
> > State University. Following is what I do:
> > 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> > -o linux-5.18-rc1.tar.gz
> > 2) tar zxf linux-5.18-rc1.tar.gz
> > 3) cp config linux-5.18-rc1/.config
> > 4) cd linux-5.18-rc1
> > 5) make vmlinux -j 8
> > 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> > -smp 2 (QEMU 4.2.1)
> > 7) after 12 rounds, the bug got reproduced:
> > (http://154.223.142.244/logs/20220406/qemu.log.txt)
>
> Just to make sure, are you both seeing the same thing? Last I knew,
> Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> I miss something?
We are both seeing the same thing, I work in parallel.
1) I am chasing the RCU-tasks issue which I will report my discoveries
to you later.
2) I am reproducing the RCU CPU stall issue reported by Miguel
yesterday. Lucky enough, I can reproduce it and thanks to Oregon State
University who provides me with the environment! I am also very
interested in helping chase the reason behind the issue. Lucky enough
the issue can be reproduced in a non-hardware accelerated qemu
environment so that I can give a hand.
Thanks
Zhouyi
>
> Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> kthread slept for three milliseconds, but did not wake up for more than
> 20 seconds. This kthread would normally have awakened on CPU 1, but
> CPU 1 looks to me to be very unhealthy, as can be seen in your console
> output below (but maybe my idea of what is healthy for powerpc systems
> is outdated). Please see also the inline annotations.
>
> Thoughts from the PPC guys?
>
> Thanx, Paul
>
> ------------------------------------------------------------------------
>
> [ 21.186912] rcu: INFO: rcu_sched self-detected stall on CPU
> [ 21.187331] rcu: 1-...!: (4712629 ticks this GP) idle=2c1/0/0x3 softirq=8/8 fqs=0
> [ 21.187529] (t=21000 jiffies g=-1183 q=3)
> [ 21.187681] rcu: rcu_sched kthread timer wakeup didn't happen for 20997 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
>
> The grace-period kthread is still asleep (->state=0x402).
> This indicates that the three-jiffy timer has somehow been
> prevented from expiring for almost a full 21 seconds. Of course,
> if timers don't work, RCU cannot work.
>
> [ 21.187770] rcu: Possible timer handling issue on cpu=1 timer-softirq=1
> [ 21.187927] rcu: rcu_sched kthread starved for 21001 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
> [ 21.188019] rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
> [ 21.188087] rcu: RCU grace-period kthread stack dump:
> [ 21.188196] task:rcu_sched state:I stack: 0 pid: 10 ppid: 2 flags:0x00000800
> [ 21.188453] Call Trace:
> [ 21.188525] [c0000000061e78a0] [c0000000061e78e0] 0xc0000000061e78e0 (unreliable)
> [ 21.188900] [c0000000061e7a90] [c000000000017210] __switch_to+0x250/0x310
> [ 21.189210] [c0000000061e7b00] [c0000000003ed660] __schedule+0x210/0x660
> [ 21.189315] [c0000000061e7b80] [c0000000003edb14] schedule+0x64/0x110
> [ 21.189387] [c0000000061e7bb0] [c0000000003f6648] schedule_timeout+0x1d8/0x390
> [ 21.189473] [c0000000061e7c80] [c00000000011111c] rcu_gp_fqs_loop+0x2dc/0x3d0
> [ 21.189555] [c0000000061e7d30] [c0000000001144ec] rcu_gp_kthread+0x13c/0x160
> [ 21.189633] [c0000000061e7dc0] [c0000000000c1770] kthread+0x110/0x120
> [ 21.189714] [c0000000061e7e10] [c00000000000c9e4] ret_from_kernel_thread+0x5c/0x64
>
> The above stack trace is expected behavior when the RCU
> grace-period kthread is waiting to do its next FQS scan.
>
> [ 21.189938] rcu: Stack dump where RCU GP kthread last ran:
>
> And here is the stalled CPU, which also happens to be the CPU
> that RCU last ran on:
>
> [ 21.189992] Task dump for CPU 1:
> [ 21.190059] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
> [ 21.190169] Call Trace:
> [ 21.190194] [c0000000061ef2d0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
> [ 21.190278] [c0000000061ef340] [c000000000116ca0] rcu_check_gp_kthread_starvation+0x16c/0x19c
> [ 21.190370] [c0000000061ef3c0] [c000000000114f7c] rcu_sched_clock_irq+0x7ec/0xaf0
> [ 21.190448] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
> [ 21.190524] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
> [ 21.190608] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
> [ 21.190699] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> [ 21.190837] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
>
> Up through this point is just the stack trace of the the
> code doing the stack dump that the RCU CPU stall warning code
> asked for.
>
> [ 21.190941] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
>
> This NIP does not look at all good to me. But I freely confess
> that I am out of date on what Power machines do.
>
> [ 21.191031] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
> [ 21.191109] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
> [ 21.191274] CFAR: 0000000000000000 IRQMASK: 0
> [ 21.191274] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
> [ 21.191274] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
> [ 21.191274] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
> [ 21.191274] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
> [ 21.191274] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
> [ 21.191274] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
> [ 21.191274] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
> [ 21.191274] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
> [ 21.191932] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
> [ 21.192024] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
> [ 21.192118] --- interrupt: 900
> [ 21.192158] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
> [ 21.192227] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
> [ 21.192307] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
> [ 21.192397] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> [ 21.192495] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> [ 21.192566] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
> [ 21.192615] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
> [ 21.192659] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
> [ 21.192755] CFAR: 0000000000000000 IRQMASK: 0
> [ 21.192755] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
> [ 21.192755] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
> [ 21.192755] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
> [ 21.192755] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
> [ 21.192755] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
> [ 21.192755] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
> [ 21.192755] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
> [ 21.192755] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
> [ 21.193290] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
> [ 21.193363] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
> [ 21.193428] --- interrupt: 900
> [ 21.193457] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
> [ 21.193512] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
> [ 21.193590] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
> [ 21.193679] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
> [ 21.193747] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
> [ 21.193901] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
> [ 21.194002] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x14
> [ 21.194245] Task dump for CPU 1:
> [ 21.194284] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
> [ 21.194374] Call Trace:
> [ 21.194400] [c0000000061ef2b0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
> [ 21.194479] [c0000000061ef320] [c000000000116df8] rcu_dump_cpu_stacks+0x128/0x188
> [ 21.194567] [c0000000061ef3c0] [c000000000114f9c] rcu_sched_clock_irq+0x80c/0xaf0
> [ 21.194642] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
> [ 21.194712] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
> [ 21.194828] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
> [ 21.194942] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> [ 21.195035] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
> [ 21.195104] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
> [ 21.195152] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
> [ 21.195199] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
> [ 21.195296] CFAR: 0000000000000000 IRQMASK: 0
> [ 21.195296] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
> [ 21.195296] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
> [ 21.195296] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
> [ 21.195296] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
> [ 21.195296] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
> [ 21.195296] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
> [ 21.195296] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
> [ 21.195296] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
> [ 21.195850] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
> [ 21.195944] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
> [ 21.196027] --- interrupt: 900
> [ 21.196056] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
> [ 21.196119] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
> [ 21.196192] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
> [ 21.196282] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> [ 21.196373] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> [ 21.196439] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
> [ 21.196489] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
> [ 21.196534] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
> [ 21.196627] CFAR: 0000000000000000 IRQMASK: 0
> [ 21.196627] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
> [ 21.196627] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
> [ 21.196627] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
> [ 21.196627] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
> [ 21.196627] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
> [ 21.196627] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
> [ 21.196627] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
> [ 21.196627] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
> [ 21.197168] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
> [ 21.197239] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
> [ 21.197305] --- interrupt: 900
> [ 21.197333] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
> [ 21.197390] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
> [ 21.197470] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
> [ 21.197556] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
> [ 21.197620] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
> [ 21.197696] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
> [ 21.197820] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x1I4
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-06 18:25 ` Zhouyi Zhou
0 siblings, 0 replies; 50+ messages in thread
From: Zhouyi Zhou @ 2022-04-06 18:25 UTC (permalink / raw)
To: Paul E. McKenney, Zhouyi Zhou; +Cc: Miguel Ojeda, linuxppc-dev, rcu
Hi Paul
On Thu, Apr 7, 2022 at 1:00 AM Paul E. McKenney <paulmck@kernel.org> wrote:
>
> On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> > Hi
> >
> > I can reproduce it in a ppc virtual cloud server provided by Oregon
> > State University. Following is what I do:
> > 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> > -o linux-5.18-rc1.tar.gz
> > 2) tar zxf linux-5.18-rc1.tar.gz
> > 3) cp config linux-5.18-rc1/.config
> > 4) cd linux-5.18-rc1
> > 5) make vmlinux -j 8
> > 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> > -smp 2 (QEMU 4.2.1)
> > 7) after 12 rounds, the bug got reproduced:
> > (http://154.223.142.244/logs/20220406/qemu.log.txt)
>
> Just to make sure, are you both seeing the same thing? Last I knew,
> Zhouyi was chasing an RCU-tasks issue that appears only in kernels
> built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
> I miss something?
We are both seeing the same thing, I work in parallel.
1) I am chasing the RCU-tasks issue which I will report my discoveries
to you later.
2) I am reproducing the RCU CPU stall issue reported by Miguel
yesterday. Lucky enough, I can reproduce it and thanks to Oregon State
University who provides me with the environment! I am also very
interested in helping chase the reason behind the issue. Lucky enough
the issue can be reproduced in a non-hardware accelerated qemu
environment so that I can give a hand.
Thanks
Zhouyi
>
> Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
> kthread slept for three milliseconds, but did not wake up for more than
> 20 seconds. This kthread would normally have awakened on CPU 1, but
> CPU 1 looks to me to be very unhealthy, as can be seen in your console
> output below (but maybe my idea of what is healthy for powerpc systems
> is outdated). Please see also the inline annotations.
>
> Thoughts from the PPC guys?
>
> Thanx, Paul
>
> ------------------------------------------------------------------------
>
> [ 21.186912] rcu: INFO: rcu_sched self-detected stall on CPU
> [ 21.187331] rcu: 1-...!: (4712629 ticks this GP) idle=2c1/0/0x3 softirq=8/8 fqs=0
> [ 21.187529] (t=21000 jiffies g=-1183 q=3)
> [ 21.187681] rcu: rcu_sched kthread timer wakeup didn't happen for 20997 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
>
> The grace-period kthread is still asleep (->state=0x402).
> This indicates that the three-jiffy timer has somehow been
> prevented from expiring for almost a full 21 seconds. Of course,
> if timers don't work, RCU cannot work.
>
> [ 21.187770] rcu: Possible timer handling issue on cpu=1 timer-softirq=1
> [ 21.187927] rcu: rcu_sched kthread starved for 21001 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
> [ 21.188019] rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
> [ 21.188087] rcu: RCU grace-period kthread stack dump:
> [ 21.188196] task:rcu_sched state:I stack: 0 pid: 10 ppid: 2 flags:0x00000800
> [ 21.188453] Call Trace:
> [ 21.188525] [c0000000061e78a0] [c0000000061e78e0] 0xc0000000061e78e0 (unreliable)
> [ 21.188900] [c0000000061e7a90] [c000000000017210] __switch_to+0x250/0x310
> [ 21.189210] [c0000000061e7b00] [c0000000003ed660] __schedule+0x210/0x660
> [ 21.189315] [c0000000061e7b80] [c0000000003edb14] schedule+0x64/0x110
> [ 21.189387] [c0000000061e7bb0] [c0000000003f6648] schedule_timeout+0x1d8/0x390
> [ 21.189473] [c0000000061e7c80] [c00000000011111c] rcu_gp_fqs_loop+0x2dc/0x3d0
> [ 21.189555] [c0000000061e7d30] [c0000000001144ec] rcu_gp_kthread+0x13c/0x160
> [ 21.189633] [c0000000061e7dc0] [c0000000000c1770] kthread+0x110/0x120
> [ 21.189714] [c0000000061e7e10] [c00000000000c9e4] ret_from_kernel_thread+0x5c/0x64
>
> The above stack trace is expected behavior when the RCU
> grace-period kthread is waiting to do its next FQS scan.
>
> [ 21.189938] rcu: Stack dump where RCU GP kthread last ran:
>
> And here is the stalled CPU, which also happens to be the CPU
> that RCU last ran on:
>
> [ 21.189992] Task dump for CPU 1:
> [ 21.190059] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
> [ 21.190169] Call Trace:
> [ 21.190194] [c0000000061ef2d0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
> [ 21.190278] [c0000000061ef340] [c000000000116ca0] rcu_check_gp_kthread_starvation+0x16c/0x19c
> [ 21.190370] [c0000000061ef3c0] [c000000000114f7c] rcu_sched_clock_irq+0x7ec/0xaf0
> [ 21.190448] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
> [ 21.190524] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
> [ 21.190608] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
> [ 21.190699] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> [ 21.190837] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
>
> Up through this point is just the stack trace of the the
> code doing the stack dump that the RCU CPU stall warning code
> asked for.
>
> [ 21.190941] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
>
> This NIP does not look at all good to me. But I freely confess
> that I am out of date on what Power machines do.
>
> [ 21.191031] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
> [ 21.191109] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
> [ 21.191274] CFAR: 0000000000000000 IRQMASK: 0
> [ 21.191274] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
> [ 21.191274] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
> [ 21.191274] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
> [ 21.191274] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
> [ 21.191274] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
> [ 21.191274] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
> [ 21.191274] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
> [ 21.191274] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
> [ 21.191932] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
> [ 21.192024] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
> [ 21.192118] --- interrupt: 900
> [ 21.192158] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
> [ 21.192227] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
> [ 21.192307] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
> [ 21.192397] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> [ 21.192495] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> [ 21.192566] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
> [ 21.192615] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
> [ 21.192659] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
> [ 21.192755] CFAR: 0000000000000000 IRQMASK: 0
> [ 21.192755] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
> [ 21.192755] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
> [ 21.192755] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
> [ 21.192755] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
> [ 21.192755] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
> [ 21.192755] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
> [ 21.192755] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
> [ 21.192755] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
> [ 21.193290] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
> [ 21.193363] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
> [ 21.193428] --- interrupt: 900
> [ 21.193457] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
> [ 21.193512] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
> [ 21.193590] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
> [ 21.193679] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
> [ 21.193747] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
> [ 21.193901] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
> [ 21.194002] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x14
> [ 21.194245] Task dump for CPU 1:
> [ 21.194284] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
> [ 21.194374] Call Trace:
> [ 21.194400] [c0000000061ef2b0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
> [ 21.194479] [c0000000061ef320] [c000000000116df8] rcu_dump_cpu_stacks+0x128/0x188
> [ 21.194567] [c0000000061ef3c0] [c000000000114f9c] rcu_sched_clock_irq+0x80c/0xaf0
> [ 21.194642] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
> [ 21.194712] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
> [ 21.194828] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
> [ 21.194942] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> [ 21.195035] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
> [ 21.195104] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
> [ 21.195152] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
> [ 21.195199] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
> [ 21.195296] CFAR: 0000000000000000 IRQMASK: 0
> [ 21.195296] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
> [ 21.195296] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
> [ 21.195296] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
> [ 21.195296] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
> [ 21.195296] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
> [ 21.195296] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
> [ 21.195296] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
> [ 21.195296] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
> [ 21.195850] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
> [ 21.195944] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
> [ 21.196027] --- interrupt: 900
> [ 21.196056] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
> [ 21.196119] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
> [ 21.196192] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
> [ 21.196282] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
> [ 21.196373] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> [ 21.196439] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
> [ 21.196489] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
> [ 21.196534] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
> [ 21.196627] CFAR: 0000000000000000 IRQMASK: 0
> [ 21.196627] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
> [ 21.196627] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
> [ 21.196627] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
> [ 21.196627] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
> [ 21.196627] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
> [ 21.196627] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
> [ 21.196627] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
> [ 21.196627] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
> [ 21.197168] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
> [ 21.197239] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
> [ 21.197305] --- interrupt: 900
> [ 21.197333] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
> [ 21.197390] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
> [ 21.197470] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
> [ 21.197556] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
> [ 21.197620] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
> [ 21.197696] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
> [ 21.197820] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x1I4
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-06 9:31 ` Zhouyi Zhou
@ 2022-04-06 17:00 ` Paul E. McKenney
-1 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-06 17:00 UTC (permalink / raw)
To: Zhouyi Zhou; +Cc: rcu, Miguel Ojeda, linuxppc-dev
On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> Hi
>
> I can reproduce it in a ppc virtual cloud server provided by Oregon
> State University. Following is what I do:
> 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> -o linux-5.18-rc1.tar.gz
> 2) tar zxf linux-5.18-rc1.tar.gz
> 3) cp config linux-5.18-rc1/.config
> 4) cd linux-5.18-rc1
> 5) make vmlinux -j 8
> 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> -smp 2 (QEMU 4.2.1)
> 7) after 12 rounds, the bug got reproduced:
> (http://154.223.142.244/logs/20220406/qemu.log.txt)
Just to make sure, are you both seeing the same thing? Last I knew,
Zhouyi was chasing an RCU-tasks issue that appears only in kernels
built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
I miss something?
Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
kthread slept for three milliseconds, but did not wake up for more than
20 seconds. This kthread would normally have awakened on CPU 1, but
CPU 1 looks to me to be very unhealthy, as can be seen in your console
output below (but maybe my idea of what is healthy for powerpc systems
is outdated). Please see also the inline annotations.
Thoughts from the PPC guys?
Thanx, Paul
------------------------------------------------------------------------
[ 21.186912] rcu: INFO: rcu_sched self-detected stall on CPU
[ 21.187331] rcu: 1-...!: (4712629 ticks this GP) idle=2c1/0/0x3 softirq=8/8 fqs=0
[ 21.187529] (t=21000 jiffies g=-1183 q=3)
[ 21.187681] rcu: rcu_sched kthread timer wakeup didn't happen for 20997 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
The grace-period kthread is still asleep (->state=0x402).
This indicates that the three-jiffy timer has somehow been
prevented from expiring for almost a full 21 seconds. Of course,
if timers don't work, RCU cannot work.
[ 21.187770] rcu: Possible timer handling issue on cpu=1 timer-softirq=1
[ 21.187927] rcu: rcu_sched kthread starved for 21001 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
[ 21.188019] rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
[ 21.188087] rcu: RCU grace-period kthread stack dump:
[ 21.188196] task:rcu_sched state:I stack: 0 pid: 10 ppid: 2 flags:0x00000800
[ 21.188453] Call Trace:
[ 21.188525] [c0000000061e78a0] [c0000000061e78e0] 0xc0000000061e78e0 (unreliable)
[ 21.188900] [c0000000061e7a90] [c000000000017210] __switch_to+0x250/0x310
[ 21.189210] [c0000000061e7b00] [c0000000003ed660] __schedule+0x210/0x660
[ 21.189315] [c0000000061e7b80] [c0000000003edb14] schedule+0x64/0x110
[ 21.189387] [c0000000061e7bb0] [c0000000003f6648] schedule_timeout+0x1d8/0x390
[ 21.189473] [c0000000061e7c80] [c00000000011111c] rcu_gp_fqs_loop+0x2dc/0x3d0
[ 21.189555] [c0000000061e7d30] [c0000000001144ec] rcu_gp_kthread+0x13c/0x160
[ 21.189633] [c0000000061e7dc0] [c0000000000c1770] kthread+0x110/0x120
[ 21.189714] [c0000000061e7e10] [c00000000000c9e4] ret_from_kernel_thread+0x5c/0x64
The above stack trace is expected behavior when the RCU
grace-period kthread is waiting to do its next FQS scan.
[ 21.189938] rcu: Stack dump where RCU GP kthread last ran:
And here is the stalled CPU, which also happens to be the CPU
that RCU last ran on:
[ 21.189992] Task dump for CPU 1:
[ 21.190059] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
[ 21.190169] Call Trace:
[ 21.190194] [c0000000061ef2d0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
[ 21.190278] [c0000000061ef340] [c000000000116ca0] rcu_check_gp_kthread_starvation+0x16c/0x19c
[ 21.190370] [c0000000061ef3c0] [c000000000114f7c] rcu_sched_clock_irq+0x7ec/0xaf0
[ 21.190448] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
[ 21.190524] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
[ 21.190608] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
[ 21.190699] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
[ 21.190837] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
Up through this point is just the stack trace of the the
code doing the stack dump that the RCU CPU stall warning code
asked for.
[ 21.190941] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
This NIP does not look at all good to me. But I freely confess
that I am out of date on what Power machines do.
[ 21.191031] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
[ 21.191109] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
[ 21.191274] CFAR: 0000000000000000 IRQMASK: 0
[ 21.191274] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
[ 21.191274] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
[ 21.191274] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
[ 21.191274] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
[ 21.191274] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
[ 21.191274] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
[ 21.191274] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
[ 21.191274] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
[ 21.191932] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
[ 21.192024] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
[ 21.192118] --- interrupt: 900
[ 21.192158] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
[ 21.192227] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
[ 21.192307] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
[ 21.192397] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
[ 21.192495] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
[ 21.192566] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
[ 21.192615] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
[ 21.192659] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
[ 21.192755] CFAR: 0000000000000000 IRQMASK: 0
[ 21.192755] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
[ 21.192755] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
[ 21.192755] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
[ 21.192755] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
[ 21.192755] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
[ 21.192755] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
[ 21.192755] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
[ 21.192755] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
[ 21.193290] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
[ 21.193363] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
[ 21.193428] --- interrupt: 900
[ 21.193457] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
[ 21.193512] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
[ 21.193590] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
[ 21.193679] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
[ 21.193747] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
[ 21.193901] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
[ 21.194002] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x14
[ 21.194245] Task dump for CPU 1:
[ 21.194284] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
[ 21.194374] Call Trace:
[ 21.194400] [c0000000061ef2b0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
[ 21.194479] [c0000000061ef320] [c000000000116df8] rcu_dump_cpu_stacks+0x128/0x188
[ 21.194567] [c0000000061ef3c0] [c000000000114f9c] rcu_sched_clock_irq+0x80c/0xaf0
[ 21.194642] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
[ 21.194712] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
[ 21.194828] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
[ 21.194942] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
[ 21.195035] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
[ 21.195104] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
[ 21.195152] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
[ 21.195199] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
[ 21.195296] CFAR: 0000000000000000 IRQMASK: 0
[ 21.195296] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
[ 21.195296] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
[ 21.195296] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
[ 21.195296] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
[ 21.195296] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
[ 21.195296] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
[ 21.195296] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
[ 21.195296] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
[ 21.195850] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
[ 21.195944] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
[ 21.196027] --- interrupt: 900
[ 21.196056] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
[ 21.196119] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
[ 21.196192] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
[ 21.196282] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
[ 21.196373] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
[ 21.196439] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
[ 21.196489] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
[ 21.196534] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
[ 21.196627] CFAR: 0000000000000000 IRQMASK: 0
[ 21.196627] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
[ 21.196627] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
[ 21.196627] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
[ 21.196627] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
[ 21.196627] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
[ 21.196627] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
[ 21.196627] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
[ 21.196627] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
[ 21.197168] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
[ 21.197239] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
[ 21.197305] --- interrupt: 900
[ 21.197333] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
[ 21.197390] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
[ 21.197470] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
[ 21.197556] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
[ 21.197620] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
[ 21.197696] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
[ 21.197820] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x1I4
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-06 17:00 ` Paul E. McKenney
0 siblings, 0 replies; 50+ messages in thread
From: Paul E. McKenney @ 2022-04-06 17:00 UTC (permalink / raw)
To: Zhouyi Zhou; +Cc: Miguel Ojeda, linuxppc-dev, rcu
On Wed, Apr 06, 2022 at 05:31:10PM +0800, Zhouyi Zhou wrote:
> Hi
>
> I can reproduce it in a ppc virtual cloud server provided by Oregon
> State University. Following is what I do:
> 1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
> -o linux-5.18-rc1.tar.gz
> 2) tar zxf linux-5.18-rc1.tar.gz
> 3) cp config linux-5.18-rc1/.config
> 4) cd linux-5.18-rc1
> 5) make vmlinux -j 8
> 6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
> -smp 2 (QEMU 4.2.1)
> 7) after 12 rounds, the bug got reproduced:
> (http://154.223.142.244/logs/20220406/qemu.log.txt)
Just to make sure, are you both seeing the same thing? Last I knew,
Zhouyi was chasing an RCU-tasks issue that appears only in kernels
built with CONFIG_PROVE_RCU=y, which Miguel does not have set. Or did
I miss something?
Miguel is instead seeing an RCU CPU stall warning where RCU's grace-period
kthread slept for three milliseconds, but did not wake up for more than
20 seconds. This kthread would normally have awakened on CPU 1, but
CPU 1 looks to me to be very unhealthy, as can be seen in your console
output below (but maybe my idea of what is healthy for powerpc systems
is outdated). Please see also the inline annotations.
Thoughts from the PPC guys?
Thanx, Paul
------------------------------------------------------------------------
[ 21.186912] rcu: INFO: rcu_sched self-detected stall on CPU
[ 21.187331] rcu: 1-...!: (4712629 ticks this GP) idle=2c1/0/0x3 softirq=8/8 fqs=0
[ 21.187529] (t=21000 jiffies g=-1183 q=3)
[ 21.187681] rcu: rcu_sched kthread timer wakeup didn't happen for 20997 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
The grace-period kthread is still asleep (->state=0x402).
This indicates that the three-jiffy timer has somehow been
prevented from expiring for almost a full 21 seconds. Of course,
if timers don't work, RCU cannot work.
[ 21.187770] rcu: Possible timer handling issue on cpu=1 timer-softirq=1
[ 21.187927] rcu: rcu_sched kthread starved for 21001 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
[ 21.188019] rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
[ 21.188087] rcu: RCU grace-period kthread stack dump:
[ 21.188196] task:rcu_sched state:I stack: 0 pid: 10 ppid: 2 flags:0x00000800
[ 21.188453] Call Trace:
[ 21.188525] [c0000000061e78a0] [c0000000061e78e0] 0xc0000000061e78e0 (unreliable)
[ 21.188900] [c0000000061e7a90] [c000000000017210] __switch_to+0x250/0x310
[ 21.189210] [c0000000061e7b00] [c0000000003ed660] __schedule+0x210/0x660
[ 21.189315] [c0000000061e7b80] [c0000000003edb14] schedule+0x64/0x110
[ 21.189387] [c0000000061e7bb0] [c0000000003f6648] schedule_timeout+0x1d8/0x390
[ 21.189473] [c0000000061e7c80] [c00000000011111c] rcu_gp_fqs_loop+0x2dc/0x3d0
[ 21.189555] [c0000000061e7d30] [c0000000001144ec] rcu_gp_kthread+0x13c/0x160
[ 21.189633] [c0000000061e7dc0] [c0000000000c1770] kthread+0x110/0x120
[ 21.189714] [c0000000061e7e10] [c00000000000c9e4] ret_from_kernel_thread+0x5c/0x64
The above stack trace is expected behavior when the RCU
grace-period kthread is waiting to do its next FQS scan.
[ 21.189938] rcu: Stack dump where RCU GP kthread last ran:
And here is the stalled CPU, which also happens to be the CPU
that RCU last ran on:
[ 21.189992] Task dump for CPU 1:
[ 21.190059] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
[ 21.190169] Call Trace:
[ 21.190194] [c0000000061ef2d0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
[ 21.190278] [c0000000061ef340] [c000000000116ca0] rcu_check_gp_kthread_starvation+0x16c/0x19c
[ 21.190370] [c0000000061ef3c0] [c000000000114f7c] rcu_sched_clock_irq+0x7ec/0xaf0
[ 21.190448] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
[ 21.190524] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
[ 21.190608] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
[ 21.190699] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
[ 21.190837] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
Up through this point is just the stack trace of the the
code doing the stack dump that the RCU CPU stall warning code
asked for.
[ 21.190941] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
This NIP does not look at all good to me. But I freely confess
that I am out of date on what Power machines do.
[ 21.191031] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
[ 21.191109] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
[ 21.191274] CFAR: 0000000000000000 IRQMASK: 0
[ 21.191274] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
[ 21.191274] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
[ 21.191274] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
[ 21.191274] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
[ 21.191274] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
[ 21.191274] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
[ 21.191274] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
[ 21.191274] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
[ 21.191932] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
[ 21.192024] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
[ 21.192118] --- interrupt: 900
[ 21.192158] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
[ 21.192227] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
[ 21.192307] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
[ 21.192397] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
[ 21.192495] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
[ 21.192566] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
[ 21.192615] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
[ 21.192659] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
[ 21.192755] CFAR: 0000000000000000 IRQMASK: 0
[ 21.192755] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
[ 21.192755] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
[ 21.192755] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
[ 21.192755] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
[ 21.192755] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
[ 21.192755] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
[ 21.192755] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
[ 21.192755] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
[ 21.193290] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
[ 21.193363] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
[ 21.193428] --- interrupt: 900
[ 21.193457] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
[ 21.193512] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
[ 21.193590] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
[ 21.193679] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
[ 21.193747] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
[ 21.193901] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
[ 21.194002] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x14
[ 21.194245] Task dump for CPU 1:
[ 21.194284] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
[ 21.194374] Call Trace:
[ 21.194400] [c0000000061ef2b0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
[ 21.194479] [c0000000061ef320] [c000000000116df8] rcu_dump_cpu_stacks+0x128/0x188
[ 21.194567] [c0000000061ef3c0] [c000000000114f9c] rcu_sched_clock_irq+0x80c/0xaf0
[ 21.194642] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
[ 21.194712] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
[ 21.194828] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
[ 21.194942] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
[ 21.195035] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
[ 21.195104] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
[ 21.195152] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
[ 21.195199] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
[ 21.195296] CFAR: 0000000000000000 IRQMASK: 0
[ 21.195296] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
[ 21.195296] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
[ 21.195296] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
[ 21.195296] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
[ 21.195296] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
[ 21.195296] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
[ 21.195296] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
[ 21.195296] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
[ 21.195850] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
[ 21.195944] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
[ 21.196027] --- interrupt: 900
[ 21.196056] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
[ 21.196119] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
[ 21.196192] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
[ 21.196282] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
[ 21.196373] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
[ 21.196439] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
[ 21.196489] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
[ 21.196534] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
[ 21.196627] CFAR: 0000000000000000 IRQMASK: 0
[ 21.196627] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
[ 21.196627] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
[ 21.196627] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
[ 21.196627] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
[ 21.196627] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
[ 21.196627] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
[ 21.196627] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
[ 21.196627] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
[ 21.197168] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
[ 21.197239] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
[ 21.197305] --- interrupt: 900
[ 21.197333] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
[ 21.197390] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
[ 21.197470] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
[ 21.197556] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
[ 21.197620] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
[ 21.197696] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
[ 21.197820] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x1I4
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
2022-04-05 21:41 Miguel Ojeda
@ 2022-04-06 9:31 ` Zhouyi Zhou
0 siblings, 0 replies; 50+ messages in thread
From: Zhouyi Zhou @ 2022-04-06 9:31 UTC (permalink / raw)
To: Miguel Ojeda; +Cc: rcu, linuxppc-dev
Hi
I can reproduce it in a ppc virtual cloud server provided by Oregon
State University. Following is what I do:
1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
-o linux-5.18-rc1.tar.gz
2) tar zxf linux-5.18-rc1.tar.gz
3) cp config linux-5.18-rc1/.config
4) cd linux-5.18-rc1
5) make vmlinux -j 8
6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
-smp 2 (QEMU 4.2.1)
7) after 12 rounds, the bug got reproduced:
(http://154.223.142.244/logs/20220406/qemu.log.txt)
Cheers ;-)
Zhouyi
On Wed, Apr 6, 2022 at 3:47 PM Miguel Ojeda
<miguel.ojeda.sandonis@gmail.com> wrote:
>
> Hi PPC/RCU,
>
> While merging v5.18-rc1 changes I noticed our CI PPC runs broke. I
> reproduced the problem in v5.18-rc1 as well as next-20220405, under
> both QEMU 4.2.1 and 6.1.0, with `-smp 2`; but I cannot reproduce it in
> v5.17 from a few tries.
>
> Sadly, the problem is not deterministic although it is not too hard to
> reproduce (1 out of 5?). Please see attached config and QEMU output.
>
> Cheers,
> Miguel
^ permalink raw reply [flat|nested] 50+ messages in thread
* Re: rcu_sched self-detected stall on CPU
@ 2022-04-06 9:31 ` Zhouyi Zhou
0 siblings, 0 replies; 50+ messages in thread
From: Zhouyi Zhou @ 2022-04-06 9:31 UTC (permalink / raw)
To: Miguel Ojeda; +Cc: linuxppc-dev, rcu
Hi
I can reproduce it in a ppc virtual cloud server provided by Oregon
State University. Following is what I do:
1) curl -l https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot/linux-5.18-rc1.tar.gz
-o linux-5.18-rc1.tar.gz
2) tar zxf linux-5.18-rc1.tar.gz
3) cp config linux-5.18-rc1/.config
4) cd linux-5.18-rc1
5) make vmlinux -j 8
6) qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot
-smp 2 (QEMU 4.2.1)
7) after 12 rounds, the bug got reproduced:
(http://154.223.142.244/logs/20220406/qemu.log.txt)
Cheers ;-)
Zhouyi
On Wed, Apr 6, 2022 at 3:47 PM Miguel Ojeda
<miguel.ojeda.sandonis@gmail.com> wrote:
>
> Hi PPC/RCU,
>
> While merging v5.18-rc1 changes I noticed our CI PPC runs broke. I
> reproduced the problem in v5.18-rc1 as well as next-20220405, under
> both QEMU 4.2.1 and 6.1.0, with `-smp 2`; but I cannot reproduce it in
> v5.17 from a few tries.
>
> Sadly, the problem is not deterministic although it is not too hard to
> reproduce (1 out of 5?). Please see attached config and QEMU output.
>
> Cheers,
> Miguel
^ permalink raw reply [flat|nested] 50+ messages in thread
* rcu_sched self-detected stall on CPU
@ 2022-04-05 21:41 Miguel Ojeda
2022-04-06 9:31 ` Zhouyi Zhou
0 siblings, 1 reply; 50+ messages in thread
From: Miguel Ojeda @ 2022-04-05 21:41 UTC (permalink / raw)
To: linuxppc-dev, rcu
[-- Attachment #1: Type: text/plain, Size: 400 bytes --]
Hi PPC/RCU,
While merging v5.18-rc1 changes I noticed our CI PPC runs broke. I
reproduced the problem in v5.18-rc1 as well as next-20220405, under
both QEMU 4.2.1 and 6.1.0, with `-smp 2`; but I cannot reproduce it in
v5.17 from a few tries.
Sadly, the problem is not deterministic although it is not too hard to
reproduce (1 out of 5?). Please see attached config and QEMU output.
Cheers,
Miguel
[-- Attachment #2: qemu --]
[-- Type: application/octet-stream, Size: 20395 bytes --]
# qemu-system-ppc64 -kernel vmlinux -nographic -vga none -no-reboot -smp 2
qemu-system-ppc64: warning: TCG doesn't support requested feature, cap-cfpc=workaround
qemu-system-ppc64: warning: TCG doesn't support requested feature, cap-sbbc=workaround
qemu-system-ppc64: warning: TCG doesn't support requested feature, cap-ibs=workaround
SLOF **********************************************************************
QEMU Starting
Build Date = Jan 31 2020 20:27:09
FW Version = buildd@ release 20191209
Press "s" to enter Open Firmware.
Populating /vdevice methods
Populating /vdevice/vty@71000000
Populating /vdevice/nvram@71000001
Populating /vdevice/l-lan@71000002
Populating /vdevice/v-scsi@71000003
SCSI: Looking for devices
8200000000000000 CD-ROM : "QEMU QEMU CD-ROM 2.5+"
Populating /pci@800000020000000
No NVRAM common partition, re-initializing...
Scanning USB
Using default console: /vdevice/vty@71000000
Detected RAM kernel at 400000 (121f8f0 bytes)
Welcome to Open Firmware
Copyright (c) 2004, 2017 IBM Corporation All rights reserved.
This program and the accompanying materials are made available
under the terms of the BSD License available at
http://www.opensource.org/licenses/bsd-license.php
Booting from memory...
OF stdout device is: /vdevice/vty@71000000
Preparing to boot Linux version 5.18.0-rc1 (root@test) (powerpc64le-linux-gnu-gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #2 SMP Tue Apr 5 21:09:40 UTC 2022
Detected machine type: 0000000000000101
command line:
Max number of cores passed to firmware: 2 (NR_CPUS = 2)
Calling ibm,client-architecture-support...qemu-system-ppc64: warning: TCG doesn't support requested feature, cap-cfpc=workaround
qemu-system-ppc64: warning: TCG doesn't support requested feature, cap-sbbc=workaround
qemu-system-ppc64: warning: TCG doesn't support requested feature, cap-ibs=workaround
SLOF **********************************************************************
QEMU Starting
Build Date = Jan 31 2020 20:27:09
FW Version = buildd@ release 20191209
Press "s" to enter Open Firmware.
Populating /vdevice methods
Populating /vdevice/vty@71000000
Populating /vdevice/nvram@71000001
Populating /vdevice/l-lan@71000002
Populating /vdevice/v-scsi@71000003
SCSI: Looking for devices
8200000000000000 CD-ROM : "QEMU QEMU CD-ROM 2.5+"
Populating /pci@800000020000000
Scanning USB
Using default console: /vdevice/vty@71000000
Detected RAM kernel at 400000 (121f8f0 bytes)
Welcome to Open Firmware
Copyright (c) 2004, 2017 IBM Corporation All rights reserved.
This program and the accompanying materials are made available
under the terms of the BSD License available at
http://www.opensource.org/licenses/bsd-license.php
Booting from memory...
OF stdout device is: /vdevice/vty@71000000
Preparing to boot Linux version 5.18.0-rc1 (root@test) (powerpc64le-linux-gnu-gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #2 SMP Tue Apr 5 21:09:40 UTC 2022
Detected machine type: 0000000000000101
command line:
Max number of cores passed to firmware: 2 (NR_CPUS = 2)
Calling ibm,client-architecture-support... done
memory layout at init:
memory_limit : 0000000000000000 (16 MB aligned)
alloc_bottom : 0000000001630000
alloc_top : 0000000020000000
alloc_top_hi : 0000000020000000
rmo_top : 0000000020000000
ram_top : 0000000020000000
instantiating rtas at 0x000000001fff0000... done
prom_hold_cpus: skipped
copying OF device tree...
Building dt strings...
Building dt structure...
Device tree strings 0x0000000001640000 -> 0x0000000001640a77
Device tree struct 0x0000000001650000 -> 0x0000000001660000
Quiescing Open Firmware ...
Booting Linux via __start() @ 0x0000000000400000 ...
[ 0.000000] radix-mmu: Page sizes from device-tree:
[ 0.000000] radix-mmu: Page size shift = 12 AP=0x0
[ 0.000000] radix-mmu: Page size shift = 16 AP=0x5
[ 0.000000] radix-mmu: Page size shift = 21 AP=0x1
[ 0.000000] radix-mmu: Page size shift = 30 AP=0x2
[ 0.000000] Activating Kernel Userspace Access Prevention
[ 0.000000] Activating Kernel Userspace Execution Prevention
[ 0.000000] radix-mmu: Mapped 0x0000000000000000-0x0000000001200000 with 2.00 MiB pages (exec)
[ 0.000000] radix-mmu: Mapped 0x0000000001200000-0x0000000020000000 with 2.00 MiB pages
[ 0.000000] lpar: Using radix MMU under hypervisor
[ 0.000000] Linux version 5.18.0-rc1 (root@test) (powerpc64le-linux-gnu-gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #2 SMP Tue Apr 5 21:09:40 UTC 2022
[ 0.000000] Using pSeries machine description
[ 0.000000] printk: bootconsole [udbg0] enabled
[ 0.000000] Partition configured for 2 cpus.
[ 0.000000] CPU maps initialized for 1 thread per core
[ 0.000000] -----------------------------------------------------
[ 0.000000] phys_mem_size = 0x20000000
[ 0.000000] dcache_bsize = 0x80
[ 0.000000] icache_bsize = 0x80
[ 0.000000] cpu_features = 0x0001c06b8f4f9187
[ 0.000000] possible = 0x000ffbebcf5fb187
[ 0.000000] always = 0x0000006b8b5c9181
[ 0.000000] cpu_user_features = 0xdc0065c2 0xaef00000
[ 0.000000] mmu_features = 0x3c007641
[ 0.000000] firmware_features = 0x00000085455a445f
[ 0.000000] vmalloc start = 0xc008000000000000
[ 0.000000] IO start = 0xc00a000000000000
[ 0.000000] vmemmap start = 0xc00c000000000000
[ 0.000000] -----------------------------------------------------
[ 0.000000] rfi-flush: fallback displacement flush available
[ 0.000000] rfi-flush: ori type flush available
[ 0.000000] rfi-flush: mttrig type flush available
[ 0.000000] count-cache-flush: software flush enabled.
[ 0.000000] link-stack-flush: software flush enabled.
[ 0.000000] stf-barrier: eieio barrier available
[ 0.000000] PPC64 nvram contains 65536 bytes
[ 0.000000] PV qspinlock hash table entries: 4096 (order: 0, 65536 bytes, linear)
[ 0.000000] barrier-nospec: using ORI speculation barrier
[ 0.000000] Zone ranges:
[ 0.000000] Normal [mem 0x0000000000000000-0x000000001fffffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000000000-0x000000001fffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000001fffffff]
[ 0.000000] percpu: Embedded 2 pages/cpu s32544 r0 d98528 u131072
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 8185
[ 0.000000] Kernel command line:
[ 0.000000] Dentry cache hash table entries: 65536 (order: 3, 524288 bytes, linear)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 2, 262144 bytes, linear)
[ 0.000000] mem auto-init: stack:off, heap alloc:on, heap free:on
[ 0.000000] mem auto-init: clearing system memory may take some time...
[ 0.000000] Memory: 418560K/524288K available (4096K kernel code, 704K rwdata, 768K rodata, 1024K init, 446K bss, 105728K reserved, 0K cma-reserved)
[ 0.000000] random: get_random_u64 called from __kmem_cache_create+0x34/0x520 with crng_init=0
[ 0.000000] SLUB: HWalign=128, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[ 0.000000] rcu: Hierarchical RCU implementation.
[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 100 jiffies.
[ 0.000000] NR_IRQS: 512, nr_irqs: 512, preallocated irqs: 16
[ 0.000000] xive: Using IRQ range [0-1]
[ 0.000000] xive: Interrupt handling initialized with spapr backend
[ 0.000000] xive: Using priority 6 for all interrupts
[ 0.000000] xive: Using 64kB queues
[ 0.000061] time_init: 56 bit decrementer (max: 7fffffffffffff)
[ 0.000505] clocksource: timebase: mask: 0xffffffffffffffff max_cycles: 0x761537d007, max_idle_ns: 440795202126 ns
[ 0.000999] clocksource: timebase mult[1f40000] shift[24] registered
[ 0.007895] Console: colour dummy device 80x25
[ 0.008493] printk: console [hvc0] enabled
[ 0.008493] printk: console [hvc0] enabled
[ 0.010438] printk: bootconsole [udbg0] disabled
[ 0.010438] printk: bootconsole [udbg0] disabled
[ 0.011696] pid_max: default: 32768 minimum: 301
[ 0.012503] Mount-cache hash table entries: 8192 (order: 0, 65536 bytes, linear)
[ 0.012575] Mountpoint-cache hash table entries: 8192 (order: 0, 65536 bytes, linear)
[ 0.041799] POWER9 performance monitor hardware support registered
[ 0.042735] rcu: Hierarchical SRCU implementation.
[ 0.045220] smp: Bringing up secondary CPUs ...
[ 0.066059] smp: Brought up 1 node, 2 CPUs
[ 0.093530] devtmpfs: initialized
[ 0.100032] PCI host bridge /pci@800000020000000 ranges:
[ 0.100607] IO 0x0000200000000000..0x000020000000ffff -> 0x0000000000000000
[ 0.100734] MEM 0x0000200080000000..0x00002000ffffffff -> 0x0000000080000000
[ 0.100805] MEM 0x0000210000000000..0x000021ffffffffff -> 0x0000210000000000
[ 0.101744] PCI: OF: PROBE_ONLY disabled
[ 0.102198] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns
[ 0.102371] futex hash table entries: 512 (order: 0, 65536 bytes, linear)
Linux ppc64le
#2 SMP Tue Apr 5[ 0.110196] EEH: pSeries platform initialized
[ 0.115987] software IO TLB: tearing down default memory pool
[ 0.134293] PCI: Probing PCI hardware
[ 0.136684] PCI host bridge to bus 0000:00
[ 0.136999] pci_bus 0000:00: root bus resource [io 0x10000-0x1ffff] (bus address [0x0000-0xffff])
[ 0.137449] pci_bus 0000:00: root bus resource [mem 0x200080000000-0x2000ffffffff] (bus address [0x80000000-0xffffffff])
[ 0.137535] pci_bus 0000:00: root bus resource [mem 0x210000000000-0x21ffffffffff 64bit]
[ 0.137720] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.142416] IOMMU table initialized, virtual merging enabled
[ 0.143475] pci_bus 0000:00: resource 4 [io 0x10000-0x1ffff]
[ 0.143541] pci_bus 0000:00: resource 5 [mem 0x200080000000-0x2000ffffffff]
[ 0.143575] pci_bus 0000:00: resource 6 [mem 0x210000000000-0x21ffffffffff 64bit]
[ 0.143754] EEH: No capable adapters found: recovery disabled.
[ 0.166254] vgaarb: loaded
[ 0.168227] clocksource: Switched to clocksource timebase
[ 0.182817] PCI: CLS 0 bytes, default 128
[ 1.790625] workingset: timestamp_bits=62 max_order=13 bucket_order=0
[ 21.186912] rcu: INFO: rcu_sched self-detected stall on CPU
[ 21.187331] rcu: 1-...!: (4712629 ticks this GP) idle=2c1/0/0x3 softirq=8/8 fqs=0
[ 21.187529] (t=21000 jiffies g=-1183 q=3)
[ 21.187681] rcu: rcu_sched kthread timer wakeup didn't happen for 20997 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
[ 21.187770] rcu: Possible timer handling issue on cpu=1 timer-softirq=1
[ 21.187927] rcu: rcu_sched kthread starved for 21001 jiffies! g-1183 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
[ 21.188019] rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
[ 21.188087] rcu: RCU grace-period kthread stack dump:
[ 21.188196] task:rcu_sched state:I stack: 0 pid: 10 ppid: 2 flags:0x00000800
[ 21.188453] Call Trace:
[ 21.188525] [c0000000061e78a0] [c0000000061e78e0] 0xc0000000061e78e0 (unreliable)
[ 21.188900] [c0000000061e7a90] [c000000000017210] __switch_to+0x250/0x310
[ 21.189210] [c0000000061e7b00] [c0000000003ed660] __schedule+0x210/0x660
[ 21.189315] [c0000000061e7b80] [c0000000003edb14] schedule+0x64/0x110
[ 21.189387] [c0000000061e7bb0] [c0000000003f6648] schedule_timeout+0x1d8/0x390
[ 21.189473] [c0000000061e7c80] [c00000000011111c] rcu_gp_fqs_loop+0x2dc/0x3d0
[ 21.189555] [c0000000061e7d30] [c0000000001144ec] rcu_gp_kthread+0x13c/0x160
[ 21.189633] [c0000000061e7dc0] [c0000000000c1770] kthread+0x110/0x120
[ 21.189714] [c0000000061e7e10] [c00000000000c9e4] ret_from_kernel_thread+0x5c/0x64
[ 21.189938] rcu: Stack dump where RCU GP kthread last ran:
[ 21.189992] Task dump for CPU 1:
[ 21.190059] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
[ 21.190169] Call Trace:
[ 21.190194] [c0000000061ef2d0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
[ 21.190278] [c0000000061ef340] [c000000000116ca0] rcu_check_gp_kthread_starvation+0x16c/0x19c
[ 21.190370] [c0000000061ef3c0] [c000000000114f7c] rcu_sched_clock_irq+0x7ec/0xaf0
[ 21.190448] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
[ 21.190524] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
[ 21.190608] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
[ 21.190699] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
[ 21.190837] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
[ 21.190941] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
[ 21.191031] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
[ 21.191109] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
[ 21.191274] CFAR: 0000000000000000 IRQMASK: 0
[ 21.191274] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
[ 21.191274] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
[ 21.191274] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
[ 21.191274] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
[ 21.191274] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
[ 21.191274] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
[ 21.191274] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
[ 21.191274] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
[ 21.191932] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
[ 21.192024] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
[ 21.192118] --- interrupt: 900
[ 21.192158] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
[ 21.192227] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
[ 21.192307] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
[ 21.192397] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
[ 21.192495] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
[ 21.192566] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
[ 21.192615] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
[ 21.192659] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
[ 21.192755] CFAR: 0000000000000000 IRQMASK: 0
[ 21.192755] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
[ 21.192755] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
[ 21.192755] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
[ 21.192755] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
[ 21.192755] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
[ 21.192755] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
[ 21.192755] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
[ 21.192755] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
[ 21.193290] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
[ 21.193363] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
[ 21.193428] --- interrupt: 900
[ 21.193457] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
[ 21.193512] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
[ 21.193590] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
[ 21.193679] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
[ 21.193747] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
[ 21.193901] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
[ 21.194002] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x14
[ 21.194245] Task dump for CPU 1:
[ 21.194284] task:swapper/1 state:R running task stack: 0 pid: 0 ppid: 1 flags:0x00000804
[ 21.194374] Call Trace:
[ 21.194400] [c0000000061ef2b0] [c0000000000c9a40] sched_show_task+0x180/0x1c0 (unreliable)
[ 21.194479] [c0000000061ef320] [c000000000116df8] rcu_dump_cpu_stacks+0x128/0x188
[ 21.194567] [c0000000061ef3c0] [c000000000114f9c] rcu_sched_clock_irq+0x80c/0xaf0
[ 21.194642] [c0000000061ef4b0] [c000000000120fdc] update_process_times+0xbc/0x140
[ 21.194712] [c0000000061ef4f0] [c000000000136a24] tick_nohz_handler+0xf4/0x1b0
[ 21.194828] [c0000000061ef540] [c00000000001c828] timer_interrupt+0x148/0x2d0
[ 21.194942] [c0000000061ef590] [c0000000000098e8] decrementer_common_virt+0x208/0x210
[ 21.195035] --- interrupt: 900 at arch_local_irq_restore+0x168/0x170
[ 21.195104] NIP: c000000000013608 LR: c0000000003f8114 CTR: c0000000000dc630
[ 21.195152] REGS: c0000000061ef600 TRAP: 0900 Not tainted (5.18.0-rc1)
[ 21.195199] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22000202 XER: 00000000
[ 21.195296] CFAR: 0000000000000000 IRQMASK: 0
[ 21.195296] GPR00: c00000000009c368 c0000000061ef8a0 c00000000116a700 0000000000000000
[ 21.195296] GPR04: 0000000000000000 0000000000000000 000000001ee30000 ffffffffffffffff
[ 21.195296] GPR08: 000000001ee30000 0000000000000000 0000000000008002 7265677368657265
[ 21.195296] GPR12: c0000000000dc630 c00000001ffe5800 0000000000000000 0000000000000000
[ 21.195296] GPR16: 0000000000000282 0000000000000000 0000000000000000 c0000000061eff00
[ 21.195296] GPR20: 0000000000000000 0000000000000001 c0000000061b9f80 c000000001195a10
[ 21.195296] GPR24: c000000001193a00 00000000fffb6cc4 000000000000000a c0000000010721e8
[ 21.195296] GPR28: c000000001076800 c000000001070380 c0000000010716d8 c0000000061b9f80
[ 21.195850] NIP [c000000000013608] arch_local_irq_restore+0x168/0x170
[ 21.195944] LR [c0000000003f8114] __do_softirq+0xd4/0x2ec
[ 21.196027] --- interrupt: 900
[ 21.196056] [c0000000061ef8a0] [c0000000061b9f80] 0xc0000000061b9f80 (unreliable)
[ 21.196119] [c0000000061ef9b0] [c00000000009c368] irq_exit+0xc8/0x110
[ 21.196192] [c0000000061ef9d0] [c00000000001c858] timer_interrupt+0x178/0x2d0
[ 21.196282] [c0000000061efa20] [c0000000000098e8] decrementer_common_virt+0x208/0x210
[ 21.196373] --- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
[ 21.196439] NIP: c000000000072988 LR: c000000000074fa8 CTR: c000000000074f10
[ 21.196489] REGS: c0000000061efa90 TRAP: 0900 Not tainted (5.18.0-rc1)
[ 21.196534] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28000202 XER: 00000000
[ 21.196627] CFAR: 0000000000000000 IRQMASK: 0
[ 21.196627] GPR00: 0000000028000202 c0000000061efd30 c00000000116a700 0000000000000000
[ 21.196627] GPR04: c00000001fea0280 ffffffffffffffff 0000000001f40000 000000019d088fcf
[ 21.196627] GPR08: 000000001ee30000 c00000001ffe5400 0000000000000001 0000000100000000
[ 21.196627] GPR12: c000000000074f10 c00000001ffe5800 0000000000000000 0000000000000000
[ 21.196627] GPR16: 0000000000000000 0000000000000000 0000000000000000 c0000000061eff00
[ 21.196627] GPR20: c00000000003d440 0000000000000001 c000000001195b30 c000000001195a10
[ 21.196627] GPR24: 0000000000080000 c0000000061ba000 c000000001195a98 0000000000000001
[ 21.196627] GPR28: 0000000000000001 c0000000010716d0 c0000000010716d8 c0000000010716d0
[ 21.197168] NIP [c000000000072988] plpar_hcall_norets_notrace+0x18/0x2c
[ 21.197239] LR [c000000000074fa8] pseries_lpar_idle+0x98/0x1b0
[ 21.197305] --- interrupt: 900
[ 21.197333] [c0000000061efd30] [0000000000000001] 0x1 (unreliable)
[ 21.197390] [c0000000061efdb0] [c000000000018b54] arch_cpu_idle+0x44/0x180
[ 21.197470] [c0000000061efde0] [c0000000003f75bc] default_idle_call+0x4c/0x7c
[ 21.197556] [c0000000061efe00] [c0000000000e1384] do_idle+0x114/0x1e0
[ 21.197620] [c0000000061efe60] [c0000000000e1664] cpu_startup_entry+0x34/0x40
[ 21.197696] [c0000000061efe90] [c00000000003f044] start_secondary+0x624/0xa00
[ 21.197820] [c0000000061eff90] [c00000000000cd54] start_secondary_prolog+0x10/0x14
[-- Attachment #3: config --]
[-- Type: application/octet-stream, Size: 35266 bytes --]
#
# Automatically generated file; DO NOT EDIT.
# Linux/powerpc 5.18.0-rc1 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="powerpc64le-linux-gnu-gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0"
CONFIG_CC_IS_GCC=y
CONFIG_GCC_VERSION=90400
CONFIG_CLANG_VERSION=0
CONFIG_AS_IS_GNU=y
CONFIG_AS_VERSION=23400
CONFIG_LD_IS_BFD=y
CONFIG_LD_VERSION=23400
CONFIG_LLD_VERSION=0
CONFIG_CC_CAN_LINK=y
CONFIG_CC_CAN_LINK_STATIC=y
CONFIG_CC_HAS_ASM_GOTO=y
CONFIG_CC_HAS_ASM_INLINE=y
CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
CONFIG_PAHOLE_VERSION=0
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_TABLE_SORT=y
CONFIG_THREAD_INFO_IN_TASK=y
#
# General setup
#
CONFIG_INIT_ENV_ARG_LIMIT=32
# CONFIG_COMPILE_TEST is not set
CONFIG_WERROR=y
CONFIG_LOCALVERSION=""
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_BUILD_SALT=""
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_XZ is not set
CONFIG_DEFAULT_INIT=""
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SWAP=y
# CONFIG_SYSVIPC is not set
# CONFIG_WATCH_QUEUE is not set
# CONFIG_CROSS_MEMORY_ATTACH is not set
# CONFIG_USELIB is not set
CONFIG_HAVE_ARCH_AUDITSYSCALL=y
#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
CONFIG_GENERIC_IRQ_MIGRATION=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_DOMAIN_HIERARCHY=y
CONFIG_GENERIC_MSI_IRQ=y
CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
# end of IRQ subsystem
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_ARCH_HAS_TICK_BROADCAST=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_GENERIC_CMOS_UPDATE=y
#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
CONFIG_NO_HZ_IDLE=y
# CONFIG_NO_HZ_FULL is not set
# CONFIG_NO_HZ is not set
# CONFIG_HIGH_RES_TIMERS is not set
# end of Timers subsystem
CONFIG_HAVE_EBPF_JIT=y
#
# BPF subsystem
#
# CONFIG_BPF_SYSCALL is not set
# end of BPF subsystem
CONFIG_PREEMPT_VOLUNTARY_BUILD=y
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
# CONFIG_SCHED_CORE is not set
#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_VIRT_CPU_ACCOUNTING_NATIVE is not set
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
# CONFIG_IRQ_TIME_ACCOUNTING is not set
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_PSI is not set
# end of CPU/Task time and stats accounting
CONFIG_CPU_ISOLATION=y
#
# RCU Subsystem
#
CONFIG_TREE_RCU=y
# CONFIG_RCU_EXPERT is not set
CONFIG_SRCU=y
CONFIG_TREE_SRCU=y
CONFIG_RCU_STALL_COMMON=y
CONFIG_RCU_NEED_SEGCBLIST=y
# end of RCU Subsystem
# CONFIG_IKCONFIG is not set
# CONFIG_IKHEADERS is not set
CONFIG_LOG_BUF_SHIFT=16
CONFIG_LOG_CPU_MAX_BUF_SHIFT=12
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=13
#
# Scheduler features
#
# end of Scheduler features
CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
CONFIG_CC_HAS_INT128=y
CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
# CONFIG_CGROUPS is not set
CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
CONFIG_TIME_NS=y
# CONFIG_USER_NS is not set
# CONFIG_PID_NS is not set
# CONFIG_CHECKPOINT_RESTORE is not set
# CONFIG_SCHED_AUTOGROUP is not set
# CONFIG_SYSFS_DEPRECATED is not set
# CONFIG_RELAY is not set
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
# CONFIG_RD_GZIP is not set
# CONFIG_RD_BZIP2 is not set
# CONFIG_RD_LZMA is not set
# CONFIG_RD_XZ is not set
# CONFIG_RD_LZO is not set
# CONFIG_RD_LZ4 is not set
# CONFIG_RD_ZSTD is not set
# CONFIG_BOOT_CONFIG is not set
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_HAVE_LD_DEAD_CODE_DATA_ELIMINATION=y
CONFIG_LD_ORPHAN_WARN=y
CONFIG_SYSCTL=y
CONFIG_SYSCTL_EXCEPTION_TRACE=y
CONFIG_HAVE_PCSPKR_PLATFORM=y
# CONFIG_EXPERT is not set
CONFIG_MULTIUSER=y
CONFIG_SGETMASK_SYSCALL=y
CONFIG_SYSFS_SYSCALL=y
CONFIG_FHANDLE=y
CONFIG_POSIX_TIMERS=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_PCSPKR_PLATFORM=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_FUTEX_PI=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_IO_URING=y
CONFIG_ADVISE_SYSCALLS=y
CONFIG_MEMBARRIER=y
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_BASE_RELATIVE=y
# CONFIG_USERFAULTFD is not set
CONFIG_ARCH_HAS_MEMBARRIER_CALLBACKS=y
CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
CONFIG_RSEQ=y
# CONFIG_EMBEDDED is not set
CONFIG_HAVE_PERF_EVENTS=y
#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# end of Kernel Performance Events And Counters
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLUB_DEBUG=y
# CONFIG_COMPAT_BRK is not set
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLAB_MERGE_DEFAULT is not set
# CONFIG_SLAB_FREELIST_RANDOM is not set
CONFIG_SLAB_FREELIST_HARDENED=y
# CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set
CONFIG_SLUB_CPU_PARTIAL=y
# CONFIG_PROFILING is not set
# end of General setup
CONFIG_PPC64=y
#
# Processor support
#
CONFIG_PPC_BOOK3S_64=y
# CONFIG_PPC_BOOK3E_64 is not set
CONFIG_GENERIC_CPU=y
# CONFIG_POWER7_CPU is not set
# CONFIG_POWER8_CPU is not set
# CONFIG_POWER9_CPU is not set
CONFIG_PPC_BOOK3S=y
CONFIG_PPC_FPU_REGS=y
CONFIG_PPC_FPU=y
CONFIG_ALTIVEC=y
CONFIG_VSX=y
CONFIG_PPC_64S_HASH_MMU=y
CONFIG_PPC_RADIX_MMU=y
CONFIG_PPC_RADIX_MMU_DEFAULT=y
CONFIG_PPC_KUEP=y
CONFIG_PPC_KUAP=y
# CONFIG_PPC_KUAP_DEBUG is not set
CONFIG_PPC_PKEY=y
CONFIG_PPC_MM_SLICES=y
CONFIG_PPC_HAVE_PMU_SUPPORT=y
# CONFIG_PMU_SYSFS is not set
CONFIG_PPC_PERF_CTRS=y
CONFIG_FORCE_SMP=y
CONFIG_SMP=y
CONFIG_NR_CPUS=2
CONFIG_PPC_DOORBELL=y
# end of Processor support
# CONFIG_CPU_BIG_ENDIAN is not set
CONFIG_CPU_LITTLE_ENDIAN=y
CONFIG_PPC64_BOOT_WRAPPER=y
CONFIG_64BIT=y
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MAX=29
CONFIG_ARCH_MMAP_RND_BITS_MIN=14
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=13
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=7
CONFIG_NR_IRQS=512
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_PPC=y
CONFIG_PPC_BARRIER_NOSPEC=y
CONFIG_EARLY_PRINTK=y
CONFIG_PANIC_TIMEOUT=-1
# CONFIG_COMPAT is not set
CONFIG_SCHED_OMIT_FRAME_POINTER=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_PPC_UDBG_16550=y
CONFIG_AUDIT_ARCH=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_SUSPEND_NONZERO_CPU=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_PPC_DAWR=y
CONFIG_PGTABLE_LEVELS=4
CONFIG_PPC_MSI_BITMAP=y
CONFIG_PPC_XICS=y
CONFIG_PPC_ICP_NATIVE=y
CONFIG_PPC_ICP_HV=y
CONFIG_PPC_ICS_RTAS=y
CONFIG_PPC_XIVE=y
CONFIG_PPC_XIVE_SPAPR=y
#
# Platform support
#
# CONFIG_PPC_POWERNV is not set
CONFIG_PPC_PSERIES=y
CONFIG_PARAVIRT_SPINLOCKS=y
CONFIG_PPC_SPLPAR=y
# CONFIG_PSERIES_ENERGY is not set
CONFIG_IO_EVENT_IRQ=y
# CONFIG_LPARCFG is not set
# CONFIG_PPC_SMLPAR is not set
# CONFIG_HV_PERF_CTRS is not set
CONFIG_IBMVIO=y
# CONFIG_PPC_SVM is not set
CONFIG_PPC_VAS=y
# CONFIG_KVM_GUEST is not set
# CONFIG_EPAPR_PARAVIRT is not set
CONFIG_PPC_OF_BOOT_TRAMPOLINE=y
# CONFIG_PPC_DT_CPU_FTRS is not set
# CONFIG_UDBG_RTAS_CONSOLE is not set
CONFIG_PPC_SMP_MUXED_IPI=y
CONFIG_MPIC=y
# CONFIG_MPIC_MSGR is not set
CONFIG_PPC_I8259=y
CONFIG_PPC_RTAS=y
CONFIG_RTAS_ERROR_LOGGING=y
CONFIG_PPC_RTAS_DAEMON=y
# CONFIG_RTAS_PROC is not set
CONFIG_EEH=y
#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
# end of CPU Frequency scaling
#
# CPUIdle driver
#
#
# CPU Idle
#
# CONFIG_CPU_IDLE is not set
# end of CPU Idle
# end of CPUIdle driver
# CONFIG_GEN_RTC is not set
# end of Platform support
#
# Kernel options
#
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
CONFIG_HZ_1000=y
CONFIG_HZ=1000
# CONFIG_PPC_TRANSACTIONAL_MEM is not set
CONFIG_HOTPLUG_CPU=y
CONFIG_PPC_QUEUED_SPINLOCKS=y
CONFIG_ARCH_CPU_PROBE_RELEASE=y
# CONFIG_PPC64_SUPPORTS_MEMORY_FAILURE is not set
# CONFIG_KEXEC is not set
CONFIG_RELOCATABLE=y
# CONFIG_RELOCATABLE_TEST is not set
# CONFIG_CRASH_DUMP is not set
# CONFIG_FA_DUMP is not set
# CONFIG_IRQ_ALL_CPUS is not set
# CONFIG_NUMA is not set
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_DEFAULT=y
CONFIG_ILLEGAL_POINTER_VALUE=0x5deadbeef0000000
# CONFIG_PPC_4K_PAGES is not set
CONFIG_PPC_64K_PAGES=y
CONFIG_PPC_PAGE_SHIFT=16
CONFIG_THREAD_SHIFT=14
CONFIG_DATA_SHIFT=24
CONFIG_FORCE_MAX_ZONEORDER=9
# CONFIG_PPC_SUBPAGE_PROT is not set
# CONFIG_PPC_PROT_SAO_LPAR is not set
CONFIG_SCHED_SMT=y
CONFIG_PPC_DENORMALISATION=y
CONFIG_CMDLINE=""
CONFIG_EXTRA_TARGETS=""
# CONFIG_SUSPEND is not set
# CONFIG_HIBERNATION is not set
# CONFIG_PM is not set
# CONFIG_PPC_MEM_KEYS is not set
CONFIG_PPC_RTAS_FILTER=y
# end of Kernel options
CONFIG_ISA_DMA_API=y
#
# Bus options
#
CONFIG_GENERIC_ISA_DMA=y
# CONFIG_FSL_LBC is not set
# end of Bus options
CONFIG_NONSTATIC_KERNEL=y
CONFIG_PAGE_OFFSET=0xc000000000000000
CONFIG_KERNEL_START=0xc000000000000000
CONFIG_PHYSICAL_START=0x00000000
CONFIG_ARCH_RANDOM=y
# CONFIG_VIRTUALIZATION is not set
#
# General architecture-dependent options
#
# CONFIG_KPROBES is not set
CONFIG_JUMP_LABEL=y
# CONFIG_STATIC_KEYS_SELFTEST is not set
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_KPROBES_ON_FTRACE=y
CONFIG_HAVE_FUNCTION_ERROR_INJECTION=y
CONFIG_HAVE_NMI=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
CONFIG_ARCH_HAS_SET_MEMORY=y
CONFIG_HAVE_ASM_MODVERSIONS=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_RSEQ=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_PERF_EVENTS_NMI=y
CONFIG_HAVE_NMI_WATCHDOG=y
CONFIG_HAVE_HARDLOCKUP_DETECTOR_ARCH=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_HAVE_ARCH_JUMP_LABEL_RELATIVE=y
CONFIG_MMU_GATHER_TABLE_FREE=y
CONFIG_MMU_GATHER_RCU_TABLE_FREE=y
CONFIG_MMU_GATHER_PAGE_SIZE=y
CONFIG_ARCH_WANT_IRQS_OFF_ACTIVATE_MM=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_ARCH_WEAK_RELEASE_ACQUIRE=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_HAVE_ARCH_SECCOMP=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
# CONFIG_SECCOMP is not set
CONFIG_HAVE_STACKPROTECTOR=y
CONFIG_STACKPROTECTOR=y
CONFIG_STACKPROTECTOR_STRONG=y
CONFIG_LTO_NONE=y
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_MOVE_PUD=y
CONFIG_HAVE_MOVE_PMD=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_HAVE_ARCH_HUGE_VMAP=y
CONFIG_HAVE_ARCH_HUGE_VMALLOC=y
CONFIG_HAVE_ARCH_SOFT_DIRTY=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_ARCH_MMAP_RND_BITS=14
CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
CONFIG_HAVE_RELIABLE_STACKTRACE=y
CONFIG_HAVE_ARCH_NVRAM_OPS=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_OLD_SIGSUSPEND=y
# CONFIG_COMPAT_32BIT_TIME is not set
CONFIG_ARCH_OPTIONAL_KERNEL_RWX=y
CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT=y
CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
CONFIG_STRICT_KERNEL_RWX=y
CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
CONFIG_STRICT_MODULE_RWX=y
CONFIG_ARCH_HAS_PHYS_TO_DMA=y
CONFIG_ARCH_WANT_LD_ORPHAN_WARN=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
#
# GCOV-based kernel profiling
#
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# end of GCOV-based kernel profiling
CONFIG_HAVE_GCC_PLUGINS=y
# end of General architecture-dependent options
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
# CONFIG_MODULE_FORCE_LOAD is not set
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
CONFIG_MODULE_COMPRESS_NONE=y
# CONFIG_MODULE_COMPRESS_GZIP is not set
# CONFIG_MODULE_COMPRESS_XZ is not set
# CONFIG_MODULE_COMPRESS_ZSTD is not set
# CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS is not set
CONFIG_MODPROBE_PATH="/sbin/modprobe"
CONFIG_MODULES_TREE_LOOKUP=y
CONFIG_BLOCK=y
CONFIG_BLOCK_LEGACY_AUTOLOAD=y
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
# CONFIG_BLK_DEV_ZONED is not set
# CONFIG_BLK_WBT is not set
# CONFIG_BLK_SED_OPAL is not set
# CONFIG_BLK_INLINE_ENCRYPTION is not set
#
# Partition Types
#
CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION is not set
# CONFIG_AIX_PARTITION is not set
# CONFIG_OSF_PARTITION is not set
# CONFIG_AMIGA_PARTITION is not set
# CONFIG_ATARI_PARTITION is not set
# CONFIG_MAC_PARTITION is not set
# CONFIG_MSDOS_PARTITION is not set
# CONFIG_LDM_PARTITION is not set
# CONFIG_SGI_PARTITION is not set
# CONFIG_ULTRIX_PARTITION is not set
# CONFIG_SUN_PARTITION is not set
# CONFIG_KARMA_PARTITION is not set
# CONFIG_EFI_PARTITION is not set
# CONFIG_SYSV68_PARTITION is not set
# CONFIG_CMDLINE_PARTITION is not set
# end of Partition Types
CONFIG_BLK_MQ_PCI=y
#
# IO Schedulers
#
# CONFIG_MQ_IOSCHED_DEADLINE is not set
# CONFIG_MQ_IOSCHED_KYBER is not set
# CONFIG_IOSCHED_BFQ is not set
# end of IO Schedulers
CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
CONFIG_INLINE_READ_UNLOCK=y
CONFIG_INLINE_READ_UNLOCK_IRQ=y
CONFIG_INLINE_WRITE_UNLOCK=y
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_MUTEX_SPIN_ON_OWNER=y
CONFIG_RWSEM_SPIN_ON_OWNER=y
CONFIG_LOCK_SPIN_ON_OWNER=y
CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_QUEUED_SPINLOCKS=y
CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
CONFIG_QUEUED_RWLOCKS=y
CONFIG_ARCH_HAS_MMIOWB=y
CONFIG_MMIOWB=y
CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y
#
# Executable file formats
#
CONFIG_BINFMT_ELF=y
CONFIG_ELFCORE=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_BINFMT_SCRIPT=y
# CONFIG_BINFMT_MISC is not set
CONFIG_COREDUMP=y
# end of Executable file formats
#
# Memory Management options
#
CONFIG_SELECT_MEMORY_MODEL=y
# CONFIG_FLATMEM_MANUAL is not set
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_SPARSEMEM_VMEMMAP=y
CONFIG_HAVE_FAST_GUP=y
CONFIG_ARCH_KEEP_MEMBLOCK=y
CONFIG_EXCLUSIVE_SYSTEM_RAM=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
# CONFIG_MEMORY_HOTPLUG is not set
CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
CONFIG_COMPACTION=y
# CONFIG_PAGE_REPORTING is not set
CONFIG_MIGRATION=y
CONFIG_ARCH_ENABLE_THP_MIGRATION=y
CONFIG_PHYS_ADDR_T_64BIT=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_TRANSPARENT_HUGEPAGE=y
# CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS is not set
CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
# CONFIG_CMA is not set
# CONFIG_ZPOOL is not set
# CONFIG_ZSMALLOC is not set
CONFIG_GENERIC_EARLY_IOREMAP=y
# CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
# CONFIG_IDLE_PAGE_TRACKING is not set
CONFIG_ARCH_HAS_CURRENT_STACK_POINTER=y
CONFIG_ARCH_HAS_PTE_DEVMAP=y
# CONFIG_PERCPU_STATS is not set
#
# GUP_TEST needs to have DEBUG_FS enabled
#
# CONFIG_READ_ONLY_THP_FOR_FS is not set
CONFIG_ARCH_HAS_PTE_SPECIAL=y
# CONFIG_ANON_VMA_NAME is not set
#
# Data Access Monitoring
#
# CONFIG_DAMON is not set
# end of Data Access Monitoring
# end of Memory Management options
# CONFIG_NET is not set
#
# Device Drivers
#
CONFIG_HAVE_PCI=y
CONFIG_FORCE_PCI=y
CONFIG_PCI=y
CONFIG_PCI_DOMAINS=y
CONFIG_PCI_SYSCALL=y
# CONFIG_PCIEPORTBUS is not set
CONFIG_PCIEASPM=y
CONFIG_PCIEASPM_DEFAULT=y
# CONFIG_PCIEASPM_POWERSAVE is not set
# CONFIG_PCIEASPM_POWER_SUPERSAVE is not set
# CONFIG_PCIEASPM_PERFORMANCE is not set
# CONFIG_PCIE_PTM is not set
CONFIG_PCI_MSI=y
CONFIG_PCI_MSI_IRQ_DOMAIN=y
CONFIG_PCI_MSI_ARCH_FALLBACKS=y
CONFIG_PCI_QUIRKS=y
# CONFIG_PCI_STUB is not set
# CONFIG_PCI_IOV is not set
# CONFIG_PCI_PRI is not set
# CONFIG_PCI_PASID is not set
CONFIG_VGA_ARB=y
CONFIG_VGA_ARB_MAX_GPUS=16
# CONFIG_HOTPLUG_PCI is not set
#
# PCI controller drivers
#
# CONFIG_PCI_FTPCI100 is not set
# CONFIG_PCI_HOST_GENERIC is not set
# CONFIG_PCIE_XILINX is not set
# CONFIG_PCIE_MICROCHIP_HOST is not set
#
# DesignWare PCI Core Support
#
# CONFIG_PCIE_DW_PLAT_HOST is not set
# CONFIG_PCI_MESON is not set
# end of DesignWare PCI Core Support
#
# Mobiveil PCIe Core Support
#
# end of Mobiveil PCIe Core Support
#
# Cadence PCIe controllers support
#
# CONFIG_PCIE_CADENCE_PLAT_HOST is not set
# CONFIG_PCI_J721E_HOST is not set
# end of Cadence PCIe controllers support
# end of PCI controller drivers
#
# PCI Endpoint
#
# CONFIG_PCI_ENDPOINT is not set
# end of PCI Endpoint
#
# PCI switch controller drivers
#
# CONFIG_PCI_SW_SWITCHTEC is not set
# end of PCI switch controller drivers
# CONFIG_CXL_BUS is not set
# CONFIG_PCCARD is not set
# CONFIG_RAPIDIO is not set
#
# Generic Driver Options
#
# CONFIG_UEVENT_HELPER is not set
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_DEVTMPFS_SAFE is not set
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
#
# Firmware loader
#
CONFIG_FW_LOADER=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_FW_LOADER_USER_HELPER is not set
# CONFIG_FW_LOADER_COMPRESS is not set
# end of Firmware loader
CONFIG_ALLOW_DEV_COREDUMP=y
# CONFIG_TEST_ASYNC_DRIVER_PROBE is not set
CONFIG_GENERIC_CPU_AUTOPROBE=y
CONFIG_GENERIC_CPU_VULNERABILITIES=y
# end of Generic Driver Options
#
# Bus devices
#
# CONFIG_MHI_BUS is not set
# end of Bus devices
#
# Firmware Drivers
#
#
# ARM System Control and Management Interface Protocol
#
# end of ARM System Control and Management Interface Protocol
# CONFIG_GOOGLE_FIRMWARE is not set
#
# Tegra firmware driver
#
# end of Tegra firmware driver
# end of Firmware Drivers
# CONFIG_GNSS is not set
# CONFIG_MTD is not set
CONFIG_DTC=y
CONFIG_OF=y
# CONFIG_OF_UNITTEST is not set
CONFIG_OF_FLATTREE=y
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_OF_KOBJ=y
CONFIG_OF_DYNAMIC=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_IRQ=y
CONFIG_OF_RESERVED_MEM=y
# CONFIG_OF_OVERLAY is not set
CONFIG_OF_DMA_DEFAULT_COHERENT=y
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
# CONFIG_PARPORT is not set
# CONFIG_BLK_DEV is not set
#
# NVME Support
#
# CONFIG_BLK_DEV_NVME is not set
# CONFIG_NVME_FC is not set
# end of NVME Support
#
# Misc devices
#
# CONFIG_DUMMY_IRQ is not set
# CONFIG_IBMVMC is not set
# CONFIG_PHANTOM is not set
# CONFIG_TIFM_CORE is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_HP_ILO is not set
# CONFIG_SRAM is not set
# CONFIG_DW_XDATA_PCIE is not set
# CONFIG_PCI_ENDPOINT_TEST is not set
# CONFIG_XILINX_SDFEC is not set
# CONFIG_OPEN_DICE is not set
# CONFIG_C2PORT is not set
#
# EEPROM support
#
# CONFIG_EEPROM_93CX6 is not set
# end of EEPROM support
# CONFIG_CB710_CORE is not set
#
# Texas Instruments shared transport line discipline
#
# end of Texas Instruments shared transport line discipline
#
# Altera FPGA firmware download module (requires I2C)
#
# CONFIG_GENWQE is not set
# CONFIG_ECHO is not set
# CONFIG_BCM_VK is not set
# CONFIG_MISC_ALCOR_PCI is not set
# CONFIG_MISC_RTSX_PCI is not set
# CONFIG_HABANA_AI is not set
# CONFIG_PVPANIC is not set
# end of Misc devices
#
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_RAID_ATTRS is not set
# CONFIG_SCSI is not set
# end of SCSI device support
# CONFIG_ATA is not set
# CONFIG_MD is not set
# CONFIG_TARGET_CORE is not set
# CONFIG_FUSION is not set
#
# IEEE 1394 (FireWire) support
#
# CONFIG_FIREWIRE is not set
# CONFIG_FIREWIRE_NOSY is not set
# end of IEEE 1394 (FireWire) support
# CONFIG_MACINTOSH_DRIVERS is not set
#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
# CONFIG_INPUT_SPARSEKMAP is not set
# CONFIG_INPUT_MATRIXKMAP is not set
#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_EVDEV is not set
# CONFIG_INPUT_EVBUG is not set
#
# Input Device Drivers
#
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
# CONFIG_INPUT_TOUCHSCREEN is not set
# CONFIG_INPUT_MISC is not set
# CONFIG_RMI4_CORE is not set
#
# Hardware I/O ports
#
# CONFIG_SERIO is not set
CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
# CONFIG_GAMEPORT is not set
# end of Hardware I/O ports
# end of Input device support
#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
# CONFIG_VT_HW_CONSOLE_BINDING is not set
CONFIG_UNIX98_PTYS=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_LDISC_AUTOLOAD is not set
#
# Serial drivers
#
CONFIG_SERIAL_EARLYCON=y
CONFIG_SERIAL_8250=y
# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
# CONFIG_SERIAL_8250_16550A_VARIANTS is not set
# CONFIG_SERIAL_8250_FINTEK is not set
CONFIG_SERIAL_8250_CONSOLE=y
# CONFIG_SERIAL_8250_PCI is not set
CONFIG_SERIAL_8250_NR_UARTS=1
CONFIG_SERIAL_8250_RUNTIME_UARTS=1
# CONFIG_SERIAL_8250_EXTENDED is not set
CONFIG_SERIAL_8250_FSL=y
# CONFIG_SERIAL_8250_DW is not set
# CONFIG_SERIAL_8250_RT288X is not set
CONFIG_SERIAL_8250_PERICOM=y
# CONFIG_SERIAL_OF_PLATFORM is not set
#
# Non-8250 serial port support
#
# CONFIG_SERIAL_UARTLITE is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_ICOM is not set
# CONFIG_SERIAL_JSM is not set
# CONFIG_SERIAL_SIFIVE is not set
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_XILINX_PS_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_RP2 is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_FSL_LINFLEXUART is not set
# CONFIG_SERIAL_CONEXANT_DIGICOLOR is not set
# end of Serial drivers
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_PPC_EPAPR_HV_BYTECHAN is not set
# CONFIG_NOZOMI is not set
# CONFIG_NULL_TTY is not set
CONFIG_HVC_DRIVER=y
CONFIG_HVC_IRQ=y
CONFIG_HVC_CONSOLE=y
# CONFIG_HVC_OLD_HVSI is not set
# CONFIG_HVC_RTAS is not set
# CONFIG_HVC_UDBG is not set
# CONFIG_HVCS is not set
# CONFIG_SERIAL_DEV_BUS is not set
# CONFIG_VIRTIO_CONSOLE is not set
# CONFIG_IBM_BSR is not set
# CONFIG_IPMI_HANDLER is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_APPLICOM is not set
# CONFIG_DEVMEM is not set
# CONFIG_NVRAM is not set
CONFIG_DEVPORT=y
# CONFIG_HANGCHECK_TIMER is not set
# CONFIG_TCG_TPM is not set
# CONFIG_XILLYBUS is not set
# CONFIG_RANDOM_TRUST_CPU is not set
# CONFIG_RANDOM_TRUST_BOOTLOADER is not set
# end of Character devices
#
# I2C support
#
# CONFIG_I2C is not set
# end of I2C support
# CONFIG_I3C is not set
# CONFIG_SPI is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set
# CONFIG_PPS is not set
#
# PTP clock support
#
CONFIG_PTP_1588_CLOCK_OPTIONAL=y
#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
# end of PTP clock support
# CONFIG_PINCTRL is not set
# CONFIG_GPIOLIB is not set
# CONFIG_W1 is not set
# CONFIG_POWER_RESET is not set
# CONFIG_POWER_SUPPLY is not set
# CONFIG_HWMON is not set
# CONFIG_THERMAL is not set
# CONFIG_WATCHDOG is not set
CONFIG_SSB_POSSIBLE=y
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y
# CONFIG_BCMA is not set
#
# Multifunction device drivers
#
# CONFIG_MFD_ATMEL_FLEXCOM is not set
# CONFIG_MFD_ATMEL_HLCDC is not set
# CONFIG_MFD_MADERA is not set
# CONFIG_MFD_HI6421_PMIC is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_LPC_ICH is not set
# CONFIG_LPC_SCH is not set
# CONFIG_MFD_JANZ_CMODIO is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_RDC321X is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_SYSCON is not set
# CONFIG_MFD_TI_AM335X_TSCADC is not set
# CONFIG_MFD_TQMX86 is not set
# CONFIG_MFD_VX855 is not set
# end of Multifunction device drivers
# CONFIG_REGULATOR is not set
# CONFIG_RC_CORE is not set
#
# CEC support
#
# CONFIG_MEDIA_CEC_SUPPORT is not set
# end of CEC support
# CONFIG_MEDIA_SUPPORT is not set
#
# Graphics support
#
# CONFIG_AGP is not set
# CONFIG_DRM is not set
#
# ARM devices
#
# end of ARM devices
#
# Frame buffer Devices
#
# CONFIG_FB is not set
# end of Frame buffer Devices
#
# Backlight & LCD device support
#
# CONFIG_LCD_CLASS_DEVICE is not set
# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
# end of Backlight & LCD device support
#
# Console display driver support
#
# CONFIG_VGA_CONSOLE is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_DUMMY_CONSOLE_COLUMNS=80
CONFIG_DUMMY_CONSOLE_ROWS=25
# end of Console display driver support
# end of Graphics support
# CONFIG_SOUND is not set
#
# HID support
#
# CONFIG_HID is not set
# end of HID support
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
# CONFIG_USB_SUPPORT is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_ACCESSIBILITY is not set
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_RTC_LIB=y
# CONFIG_RTC_CLASS is not set
# CONFIG_DMADEVICES is not set
#
# DMABUF options
#
# CONFIG_SYNC_FILE is not set
# CONFIG_DMABUF_HEAPS is not set
# end of DMABUF options
# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set
# CONFIG_VFIO is not set
# CONFIG_VIRT_DRIVERS is not set
# CONFIG_VIRTIO_MENU is not set
# CONFIG_VHOST_MENU is not set
#
# Microsoft Hyper-V guest support
#
# end of Microsoft Hyper-V guest support
# CONFIG_GREYBUS is not set
# CONFIG_COMEDI is not set
# CONFIG_STAGING is not set
# CONFIG_GOLDFISH is not set
# CONFIG_COMMON_CLK is not set
# CONFIG_HWSPINLOCK is not set
#
# Clock Source drivers
#
CONFIG_I8253_LOCK=y
CONFIG_CLKBLD_I8253=y
# CONFIG_MICROCHIP_PIT64B is not set
# end of Clock Source drivers
# CONFIG_MAILBOX is not set
# CONFIG_IOMMU_SUPPORT is not set
#
# Remoteproc drivers
#
# CONFIG_REMOTEPROC is not set
# end of Remoteproc drivers
#
# Rpmsg drivers
#
# CONFIG_RPMSG_VIRTIO is not set
# end of Rpmsg drivers
# CONFIG_SOUNDWIRE is not set
#
# SOC (System On Chip) specific Drivers
#
#
# Amlogic SoC drivers
#
# end of Amlogic SoC drivers
#
# Broadcom SoC drivers
#
# end of Broadcom SoC drivers
#
# NXP/Freescale QorIQ SoC drivers
#
# CONFIG_QUICC_ENGINE is not set
# end of NXP/Freescale QorIQ SoC drivers
#
# i.MX SoC drivers
#
# end of i.MX SoC drivers
#
# Enable LiteX SoC Builder specific drivers
#
# CONFIG_LITEX_SOC_CONTROLLER is not set
# end of Enable LiteX SoC Builder specific drivers
#
# Qualcomm SoC drivers
#
# end of Qualcomm SoC drivers
# CONFIG_SOC_TI is not set
#
# Xilinx SoC drivers
#
# end of Xilinx SoC drivers
# end of SOC (System On Chip) specific Drivers
# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
# CONFIG_NTB is not set
# CONFIG_VME_BUS is not set
# CONFIG_PWM is not set
#
# IRQ chip support
#
CONFIG_IRQCHIP=y
# CONFIG_AL_FIC is not set
# end of IRQ chip support
# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set
#
# PHY Subsystem
#
# CONFIG_GENERIC_PHY is not set
# CONFIG_PHY_CAN_TRANSCEIVER is not set
#
# PHY drivers for Broadcom platforms
#
# CONFIG_BCM_KONA_USB2_PHY is not set
# end of PHY drivers for Broadcom platforms
# CONFIG_PHY_CADENCE_DPHY is not set
# CONFIG_PHY_CADENCE_DPHY_RX is not set
# CONFIG_PHY_CADENCE_SALVO is not set
# CONFIG_PHY_PXA_28NM_HSIC is not set
# CONFIG_PHY_PXA_28NM_USB2 is not set
# end of PHY Subsystem
# CONFIG_POWERCAP is not set
# CONFIG_MCB is not set
#
# Performance monitor support
#
# end of Performance monitor support
# CONFIG_RAS is not set
# CONFIG_USB4 is not set
#
# Android
#
CONFIG_ANDROID=y
# CONFIG_ANDROID_BINDER_IPC is not set
# end of Android
# CONFIG_DAX is not set
# CONFIG_NVMEM is not set
#
# HW tracing support
#
# CONFIG_STM is not set
# CONFIG_INTEL_TH is not set
# end of HW tracing support
# CONFIG_FPGA is not set
# CONFIG_FSI is not set
# CONFIG_SIOX is not set
# CONFIG_SLIMBUS is not set
# CONFIG_INTERCONNECT is not set
# CONFIG_COUNTER is not set
# CONFIG_PECI is not set
# end of Device Drivers
#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
# CONFIG_VALIDATE_FS_PARSER is not set
# CONFIG_EXT2_FS is not set
# CONFIG_EXT3_FS is not set
# CONFIG_EXT4_FS is not set
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
# CONFIG_F2FS_FS is not set
CONFIG_EXPORTFS=y
# CONFIG_EXPORTFS_BLOCK_OPS is not set
CONFIG_FILE_LOCKING=y
# CONFIG_FS_ENCRYPTION is not set
# CONFIG_FS_VERITY is not set
# CONFIG_DNOTIFY is not set
# CONFIG_INOTIFY_USER is not set
# CONFIG_FANOTIFY is not set
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_FUSE_FS is not set
# CONFIG_OVERLAY_FS is not set
#
# Caches
#
# CONFIG_FSCACHE is not set
# end of Caches
#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
# CONFIG_UDF_FS is not set
# end of CD-ROM/DVD Filesystems
#
# DOS/FAT/EXFAT/NT Filesystems
#
# CONFIG_MSDOS_FS is not set
# CONFIG_VFAT_FS is not set
# CONFIG_EXFAT_FS is not set
# CONFIG_NTFS_FS is not set
# CONFIG_NTFS3_FS is not set
# end of DOS/FAT/EXFAT/NT Filesystems
#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
# CONFIG_PROC_KCORE is not set
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
# CONFIG_PROC_CHILDREN is not set
CONFIG_KERNFS=y
CONFIG_SYSFS=y
# CONFIG_TMPFS is not set
CONFIG_ARCH_SUPPORTS_HUGETLBFS=y
# CONFIG_HUGETLBFS is not set
CONFIG_ARCH_HAS_GIGANTIC_PAGE=y
# CONFIG_CONFIGFS_FS is not set
# end of Pseudo filesystems
# CONFIG_MISC_FILESYSTEMS is not set
# CONFIG_NLS is not set
# CONFIG_UNICODE is not set
CONFIG_IO_WQ=y
# end of File systems
#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
CONFIG_HARDENED_USERCOPY=y
CONFIG_FORTIFY_SOURCE=y
# CONFIG_STATIC_USERMODEHELPER is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_LSM="lockdown,yama,loadpin,safesetid,integrity,selinux,smack,tomoyo,apparmor,bpf"
#
# Kernel hardening options
#
#
# Memory initialization
#
CONFIG_INIT_STACK_NONE=y
CONFIG_INIT_ON_ALLOC_DEFAULT_ON=y
CONFIG_INIT_ON_FREE_DEFAULT_ON=y
# end of Memory initialization
# end of Kernel hardening options
# end of Security options
# CONFIG_CRYPTO is not set
#
# Library routines
#
# CONFIG_PACKING is not set
CONFIG_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
# CONFIG_CORDIC is not set
# CONFIG_PRIME_NUMBERS is not set
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_ARCH_HAS_FAST_MULTIPLIER=y
#
# Crypto library routines
#
CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
# CONFIG_CRYPTO_LIB_CURVE25519 is not set
CONFIG_CRYPTO_LIB_POLY1305_RSIZE=1
# CONFIG_CRYPTO_LIB_POLY1305 is not set
# end of Crypto library routines
# CONFIG_CRC_CCITT is not set
# CONFIG_CRC16 is not set
# CONFIG_CRC_T10DIF is not set
# CONFIG_CRC64_ROCKSOFT is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC64 is not set
# CONFIG_CRC4 is not set
# CONFIG_CRC7 is not set
# CONFIG_LIBCRC32C is not set
# CONFIG_CRC8 is not set
# CONFIG_RANDOM32_SELFTEST is not set
CONFIG_ZLIB_DEFLATE=y
# CONFIG_XZ_DEC is not set
CONFIG_XARRAY_MULTI=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAS_DMA=y
CONFIG_DMA_OPS=y
CONFIG_DMA_OPS_BYPASS=y
CONFIG_ARCH_HAS_DMA_MAP_DIRECT=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
CONFIG_DMA_DECLARE_COHERENT=y
CONFIG_SWIOTLB=y
# CONFIG_DMA_RESTRICTED_POOL is not set
# CONFIG_DMA_API_DEBUG is not set
CONFIG_IOMMU_HELPER=y
# CONFIG_IRQ_POLL is not set
CONFIG_LIBFDT=y
CONFIG_HAVE_GENERIC_VDSO=y
CONFIG_GENERIC_GETTIMEOFDAY=y
CONFIG_GENERIC_VDSO_TIME_NS=y
CONFIG_ARCH_HAS_PMEM_API=y
CONFIG_ARCH_HAS_MEMREMAP_COMPAT_ALIGN=y
CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE=y
CONFIG_ARCH_HAS_COPY_MC=y
CONFIG_ARCH_STACKWALK=y
CONFIG_SBITMAP=y
# end of Library routines
#
# Kernel hacking
#
#
# printk and dmesg options
#
CONFIG_PRINTK_TIME=y
# CONFIG_PRINTK_CALLER is not set
# CONFIG_STACKTRACE_BUILD_ID is not set
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_CONSOLE_LOGLEVEL_QUIET=4
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_DYNAMIC_DEBUG_CORE is not set
CONFIG_SYMBOLIC_ERRNAME=y
CONFIG_DEBUG_BUGVERBOSE=y
# end of printk and dmesg options
# CONFIG_DEBUG_KERNEL is not set
#
# Compile-time checks and compiler options
#
CONFIG_FRAME_WARN=2048
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_HEADERS_INSTALL is not set
# CONFIG_DEBUG_SECTION_MISMATCH is not set
# CONFIG_SECTION_MISMATCH_WARN_ONLY is not set
# end of Compile-time checks and compiler options
#
# Generic Kernel Debugging Instruments
#
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_DEBUG_FS is not set
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
# CONFIG_UBSAN is not set
# end of Generic Kernel Debugging Instruments
#
# Networking Debugging
#
# end of Networking Debugging
#
# Memory Debugging
#
# CONFIG_PAGE_EXTENSION is not set
# CONFIG_PAGE_POISONING is not set
# CONFIG_DEBUG_RODATA_TEST is not set
CONFIG_ARCH_HAS_DEBUG_WX=y
# CONFIG_DEBUG_WX is not set
CONFIG_GENERIC_PTDUMP=y
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_SLUB_STATS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
CONFIG_ARCH_HAS_DEBUG_VM_PGTABLE=y
# CONFIG_DEBUG_VM_PGTABLE is not set
CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_CC_HAS_WORKING_NOSANITIZE_ADDRESS=y
# end of Memory Debugging
#
# Debug Oops, Lockups and Hangs
#
CONFIG_PANIC_ON_OOPS=y
CONFIG_PANIC_ON_OOPS_VALUE=1
# CONFIG_TEST_LOCKUP is not set
# end of Debug Oops, Lockups and Hangs
#
# Scheduler Debugging
#
# end of Scheduler Debugging
# CONFIG_DEBUG_TIMEKEEPING is not set
#
# Lock Debugging (spinlocks, mutexes, etc...)
#
CONFIG_LOCK_DEBUGGING_SUPPORT=y
# CONFIG_WW_MUTEX_SELFTEST is not set
# end of Lock Debugging (spinlocks, mutexes, etc...)
# CONFIG_DEBUG_IRQFLAGS is not set
# CONFIG_STACKTRACE is not set
# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set
#
# Debug kernel data structures
#
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
# end of Debug kernel data structures
#
# RCU Debugging
#
CONFIG_RCU_CPU_STALL_TIMEOUT=21
# end of RCU Debugging
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_TRACING_SUPPORT=y
# CONFIG_FTRACE is not set
CONFIG_SAMPLES=y
# CONFIG_SAMPLE_AUXDISPLAY is not set
# CONFIG_SAMPLE_KOBJECT is not set
# CONFIG_SAMPLE_HW_BREAKPOINT is not set
# CONFIG_SAMPLE_KFIFO is not set
# CONFIG_SAMPLE_WATCHDOG is not set
CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y
# CONFIG_STRICT_DEVMEM is not set
#
# powerpc Debugging
#
# CONFIG_PPC_DISABLE_WERROR is not set
CONFIG_PPC_WERROR=y
CONFIG_PRINT_STACK_DEPTH=64
# CONFIG_JUMP_LABEL_FEATURE_CHECKS is not set
# CONFIG_PPC_IRQ_SOFT_MASK_DEBUG is not set
# CONFIG_PPC_RFI_SRR_DEBUG is not set
# CONFIG_BOOTX_TEXT is not set
# CONFIG_PPC_EARLY_DEBUG is not set
# end of powerpc Debugging
#
# Kernel Testing and Coverage
#
# CONFIG_KUNIT is not set
CONFIG_ARCH_HAS_KCOV=y
CONFIG_CC_HAS_SANCOV_TRACE_PC=y
# CONFIG_KCOV is not set
# CONFIG_RUNTIME_TESTING_MENU is not set
CONFIG_ARCH_USE_MEMTEST=y
# CONFIG_MEMTEST is not set
# end of Kernel Testing and Coverage
# end of Kernel hacking
^ permalink raw reply [flat|nested] 50+ messages in thread
end of thread, other threads:[~2022-04-12 13:37 UTC | newest]
Thread overview: 50+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-09-15 4:02 rcu_sched self-detected stall on CPU NTU
2016-09-15 6:22 ` Mike Galbraith
2016-09-15 17:15 ` NTU
2016-09-20 14:34 ` NTU
2022-04-05 21:41 Miguel Ojeda
2022-04-06 9:31 ` Zhouyi Zhou
2022-04-06 9:31 ` Zhouyi Zhou
2022-04-06 17:00 ` Paul E. McKenney
2022-04-06 17:00 ` Paul E. McKenney
2022-04-06 18:25 ` Zhouyi Zhou
2022-04-06 18:25 ` Zhouyi Zhou
2022-04-06 19:50 ` Paul E. McKenney
2022-04-06 19:50 ` Paul E. McKenney
2022-04-07 2:26 ` Zhouyi Zhou
2022-04-07 2:26 ` Zhouyi Zhou
2022-04-07 10:07 ` Miguel Ojeda
2022-04-07 10:07 ` Miguel Ojeda
2022-04-07 15:15 ` Paul E. McKenney
2022-04-07 15:15 ` Paul E. McKenney
2022-04-07 17:05 ` Miguel Ojeda
2022-04-07 17:05 ` Miguel Ojeda
2022-04-07 17:55 ` Paul E. McKenney
2022-04-07 17:55 ` Paul E. McKenney
2022-04-07 23:14 ` Zhouyi Zhou
2022-04-07 23:14 ` Zhouyi Zhou
2022-04-08 1:43 ` Paul E. McKenney
2022-04-08 1:43 ` Paul E. McKenney
2022-04-08 7:23 ` Michael Ellerman
2022-04-08 10:02 ` Zhouyi Zhou
2022-04-08 10:02 ` Zhouyi Zhou
2022-04-08 14:07 ` Paul E. McKenney
2022-04-08 14:07 ` Paul E. McKenney
2022-04-08 14:25 ` Zhouyi Zhou
2022-04-08 14:25 ` Zhouyi Zhou
2022-04-10 11:33 ` Michael Ellerman
2022-04-11 3:05 ` Paul E. McKenney
2022-04-11 3:05 ` Paul E. McKenney
2022-04-12 6:53 ` Michael Ellerman
2022-04-12 6:53 ` Michael Ellerman
2022-04-12 13:36 ` Paul E. McKenney
2022-04-12 13:36 ` Paul E. McKenney
2022-04-08 13:52 ` Miguel Ojeda
2022-04-08 13:52 ` Miguel Ojeda
2022-04-08 14:06 ` Paul E. McKenney
2022-04-08 14:06 ` Paul E. McKenney
2022-04-08 14:42 ` Michael Ellerman
2022-04-08 15:52 ` Paul E. McKenney
2022-04-08 15:52 ` Paul E. McKenney
2022-04-08 17:02 ` Miguel Ojeda
2022-04-08 17:02 ` Miguel Ojeda
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