* blk_mq: suspicious RCU usage, rcu_read_lock() used illegally while idle!
@ 2014-11-06 15:45 Meelis Roos
2014-11-06 15:46 ` Christoph Hellwig
0 siblings, 1 reply; 11+ messages in thread
From: Meelis Roos @ 2014-11-06 15:45 UTC (permalink / raw)
To: linux-scsi, Christoph Hellwig, Jens Axboe
I tested a machine with multiple scsi adapters today with latest kernel
and found the following warning in the logs. It is probably from QLA1040
adapter initialization, full dmesg is below. Adaptec SCSI card dumps is
normal on this server, it is usually there and seems to be harmless
(maybe a supurious IRQ somewhere - but this should not be relevant).
The message is not there for scsi_mod.use_blk_mq=0 boot.
Booting 3.17.0 with scsi_mod.use_blk_mq=1 does not show this message
either.
[ 188.275021] ===============================
[ 188.309351] [ INFO: suspicious RCU usage. ]
[ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted
[ 188.394786] -------------------------------
[ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used
illegally while idle!
[ 188.505235]
other info that might help us debug this:
[ 188.554230]
RCU used illegally from idle CPU!
rcu_scheduler_active = 1, debug_locks = 0
[ 188.637587] RCU used illegally from extended quiescent state!
[ 188.690684] 3 locks held by swapper/7/0:
[ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60
[ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400
[ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40
[ 188.973043]stack backtrace:
[ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
[ 189.076187] Call Trace:
[ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100
[ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40
[ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400
[ 189.252258] [000000000048554c] default_wake_function+0xc/0x20
[ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80
[ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40
[ 189.406456] [0000000000495e08] complete+0x28/0x60
[ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20
[ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60
[ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180
[ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600
[ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0
[ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140
[ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20
[ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0
[ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40
Full dmesg:
[ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 3.2.30 2002/10/25 14:03'
[ 0.000000] PROMLIB: Root node compatible:
[ 0.000000] Linux version 3.18.0-rc3-00068-g20f3963-dirty (mroos@korvits) (gcc version 4.9.1 (Debian 4.9.1-18) ) #54 SMP Thu Nov 6 14:37:34 EET 2014
[ 0.000000] debug: ignoring loglevel setting.
[ 0.000000] bootconsole [earlyprom0] enabled
[ 0.000000] ARCH: SUN4U
[ 0.000000] Ethernet address: 08:00:20:b6:ee:e2
[ 0.000000] MM: PAGE_OFFSET is 0xfffff80000000000 (max_phys_bits == 40)
[ 0.000000] MM: VMALLOC [0x0000000100000000 --> 0x0000060000000000]
[ 0.000000] MM: VMEMMAP [0x0000060000000000 --> 0x00000c0000000000]
[ 0.000000] Kernel: Using 6 locked TLB entries for main kernel image.
[ 0.000000] Remapping the kernel... done.
[ 0.000000] kmemleak: Kernel memory leak detector disabled
[ 0.000000] OF stdout device is: /central@1f,0/fhc@0,f8800000/zs@0,902000:a
[ 0.000000] PROM: Built device tree with 169763 bytes of memory.
[ 0.000000] Top of RAM: 0x7fcf2000, Total RAM: 0x7f8c0000
[ 0.000000] Memory hole size: 4MB
[ 0.000000] Allocated 2113536 bytes for kernel page tables.
[ 0.000000] Zone ranges:
[ 0.000000] Normal [mem 0x00000000-0x7fcf1fff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x00000000-0x7f7ddfff]
[ 0.000000] node 0: [mem 0x7fc00000-0x7fcd1fff]
[ 0.000000] node 0: [mem 0x7fce2000-0x7fcf1fff]
[ 0.000000] Initmem setup node 0 [mem 0x00000000-0x7fcf1fff]
[ 0.000000] On node 0 totalpages: 261216
[ 0.000000] Normal zone: 2301 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 261216 pages, LIFO batch:15
[ 0.000000] Booting Linux...
[ 0.000000] CPU CAPS: [flush,stbar,swap,muldiv,v9,mul32,div32,v8plus]
[ 0.000000] CPU CAPS: [vis]
[ 0.000000] PERCPU: Embedded 7 pages/cpu @fffff8007f000000 s15808 r8192 d33344 u2097152
[ 0.000000] pcpu-alloc: s15808 r8192 d33344 u2097152 alloc=1*4194304
[ 0.000000] pcpu-alloc: [0] 6 7
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 258915
[ 0.000000] Kernel command line: root=/dev/sda2 ro debug ignore_loglevel
[ 0.000000] PID hash table entries: 4096 (order: 2, 32768 bytes)
[ 0.000000] Dentry cache hash table entries: 262144 (order: 8, 2097152 bytes)
[ 0.000000] Inode-cache hash table entries: 131072 (order: 7, 1048576 bytes)
[ 0.000000] Sorting __ex_table...
[ 0.000000] Memory: 2037784K/2089728K available (4533K kernel code, 305K rwdata, 1504K rodata, 576K init, 14539K bss, 51944K reserved)
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] RCU lockdep checking is enabled.
[ 0.000000] RCU restricting CPUs from NR_CPUS=16 to nr_cpu_ids=8.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=8
[ 0.000000] NR_IRQS:2048 nr_irqs:2048 1
[ 161.238391] clocksource: mult[2800000] shift[24]
[ 161.277473] clockevent: mult[66666666] shift[32]
[ 161.318721] Console: colour dummy device 80x25
[ 161.355382] console [tty0] enabled
[ 161.380218] bootconsole [earlyprom0] disabled
[ 161.416696] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[ 161.416740] ... MAX_LOCKDEP_SUBCLASSES: 8
[ 161.416765] ... MAX_LOCK_DEPTH: 48
[ 161.416790] ... MAX_LOCKDEP_KEYS: 8191
[ 161.416816] ... CLASSHASH_SIZE: 4096
[ 161.416841] ... MAX_LOCKDEP_ENTRIES: 32768
[ 161.416867] ... MAX_LOCKDEP_CHAINS: 65536
[ 161.416892] ... CHAINHASH_SIZE: 32768
[ 161.416918] memory used by lock dependency info: 8159 kB
[ 161.416949] per task-struct memory footprint: 1920 bytes
[ 161.416978] ------------------------
[ 161.416999] | Locking API testsuite:
[ 161.417019] ----------------------------------------------------------------------------
[ 161.417061] | spin |wlock |rlock |mutex | wsem | rsem |
[ 161.417104] --------------------------------------------------------------------------
[ 161.417173] A-A deadlock: ok | ok | ok | ok | ok | ok |
[ 161.457494] A-B-B-A deadlock: ok | ok | ok | ok | ok | ok |
[ 161.495480] A-B-B-C-C-A deadlock: ok | ok | ok | ok | ok | ok |
[ 161.533653] A-B-C-A-B-C deadlock: ok | ok | ok | ok | ok | ok |
[ 161.571829] A-B-B-C-C-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
[ 161.610241] A-B-C-D-B-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
[ 161.648630] A-B-C-D-B-C-D-A deadlock: ok | ok | ok | ok | ok | ok |
[ 161.687043] double unlock: ok | ok | ok | ok | ok | ok |
[ 161.724876] initialize held: ok | ok | ok | ok | ok | ok |
[ 161.762661] bad unlock order: ok | ok | ok | ok | ok | ok |
[ 161.800701] --------------------------------------------------------------------------
[ 161.800747] recursive read-lock: | ok | | ok |
[ 161.813409] recursive read-lock #2: | ok | | ok |
[ 161.826070] mixed read-write-lock: | ok | | ok |
[ 161.838756] mixed write-read-lock: | ok | | ok |
[ 161.851441] --------------------------------------------------------------------------
[ 161.851489] hard-irqs-on + irq-safe-A/12: ok | ok | ok |
[ 161.870404] soft-irqs-on + irq-safe-A/12: ok | ok | ok |
[ 161.889387] hard-irqs-on + irq-safe-A/21: ok | ok | ok |
[ 161.908303] soft-irqs-on + irq-safe-A/21: ok | ok | ok |
[ 161.927281] sirq-safe-A => hirqs-on/12: ok | ok | ok |
[ 161.946218] sirq-safe-A => hirqs-on/21: ok | ok | ok |
[ 161.965194] hard-safe-A + irqs-on/12: ok | ok | ok |
[ 161.984110] soft-safe-A + irqs-on/12: ok | ok | ok |
[ 162.003086] hard-safe-A + irqs-on/21: ok | ok | ok |
[ 162.022023] soft-safe-A + irqs-on/21: ok | ok | ok |
[ 162.041005] hard-safe-A + unsafe-B #1/123: ok | ok | ok |
[ 162.060021] soft-safe-A + unsafe-B #1/123: ok | ok | ok |
[ 162.079090] hard-safe-A + unsafe-B #1/132: ok | ok | ok |
[ 162.098089] soft-safe-A + unsafe-B #1/132: ok | ok | ok |
[ 162.117160] hard-safe-A + unsafe-B #1/213: ok | ok | ok |
[ 162.136184] soft-safe-A + unsafe-B #1/213: ok | ok | ok |
[ 162.155258] hard-safe-A + unsafe-B #1/231: ok | ok | ok |
[ 162.174253] soft-safe-A + unsafe-B #1/231: ok | ok | ok |
[ 162.193316] hard-safe-A + unsafe-B #1/312: ok | ok | ok |
[ 162.212268] soft-safe-A + unsafe-B #1/312: ok | ok | ok |
[ 162.231264] hard-safe-A + unsafe-B #1/321: ok | ok | ok |
[ 162.250265] soft-safe-A + unsafe-B #1/321: ok | ok | ok |
[ 162.269312] hard-safe-A + unsafe-B #2/123: ok | ok | ok |
[ 162.288321] soft-safe-A + unsafe-B #2/123: ok | ok | ok |
[ 162.307393] hard-safe-A + unsafe-B #2/132: ok | ok | ok |
[ 162.326395] soft-safe-A + unsafe-B #2/132: ok | ok | ok |
[ 162.345469] hard-safe-A + unsafe-B #2/213: ok | ok | ok |
[ 162.364485] soft-safe-A + unsafe-B #2/213: ok | ok | ok |
[ 162.383569] hard-safe-A + unsafe-B #2/231: ok | ok | ok |
[ 162.402578] soft-safe-A + unsafe-B #2/231: ok | ok | ok |
[ 162.421652] hard-safe-A + unsafe-B #2/312: ok | ok | ok |
[ 162.440662] soft-safe-A + unsafe-B #2/312: ok | ok | ok |
[ 162.459750] hard-safe-A + unsafe-B #2/321: ok | ok | ok |
[ 162.478756] soft-safe-A + unsafe-B #2/321: ok | ok | ok |
[ 162.497822] hard-irq lock-inversion/123: ok | ok | ok |
[ 162.516832] soft-irq lock-inversion/123: ok | ok | ok |
[ 162.535924] hard-irq lock-inversion/132: ok | ok | ok |
[ 162.554942] soft-irq lock-inversion/132: ok | ok | ok |
[ 162.574036] hard-irq lock-inversion/213: ok | ok | ok |
[ 162.593071] soft-irq lock-inversion/213: ok | ok | ok |
[ 162.612151] hard-irq lock-inversion/231: ok | ok | ok |
[ 162.631163] soft-irq lock-inversion/231: ok | ok | ok |
[ 162.650245] hard-irq lock-inversion/312: ok | ok | ok |
[ 162.669272] soft-irq lock-inversion/312: ok | ok | ok |
[ 162.688368] hard-irq lock-inversion/321: ok | ok | ok |
[ 162.707370] soft-irq lock-inversion/321: ok | ok | ok |
[ 162.726457] hard-irq read-recursion/123: ok |
[ 162.732811] soft-irq read-recursion/123: ok |
[ 162.739223] hard-irq read-recursion/132: ok |
[ 162.745568] soft-irq read-recursion/132: ok |
[ 162.751969] hard-irq read-recursion/213: ok |
[ 162.758313] soft-irq read-recursion/213: ok |
[ 162.764715] hard-irq read-recursion/231: ok |
[ 162.771062] soft-irq read-recursion/231: ok |
[ 162.777472] hard-irq read-recursion/312: ok |
[ 162.783817] soft-irq read-recursion/312: ok |
[ 162.790220] hard-irq read-recursion/321: ok |
[ 162.796571] soft-irq read-recursion/321: ok |
[ 162.802972] --------------------------------------------------------------------------
[ 162.803016] | Wound/wait tests |
[ 162.803039] ---------------------
[ 162.803064] ww api failures: ok | ok | ok |
[ 162.822112] ww contexts mixing: ok | ok |
[ 162.834785] finishing ww context: ok | ok | ok | ok |
[ 162.860095] locking mismatches: ok | ok | ok |
[ 162.879128] EDEADLK handling: ok | ok | ok | ok | ok | ok | ok | ok | ok | ok |
[ 162.942686] spinlock nest unlocked: ok |
[ 162.949005] -----------------------------------------------------
[ 162.949044] |block | try |context|
[ 162.949082] -----------------------------------------------------
[ 162.949121] context: ok | ok | ok |
[ 162.968211] try: ok | ok | ok |
[ 162.987181] block: ok | ok | ok |
[ 163.006186] spinlock: ok | ok | ok |
[ 163.025283] -------------------------------------------------------
[ 163.025322] Good, all 253 testcases passed! |
[ 163.025349] ---------------------------------
[ 163.027126] ODEBUG: selftest passed
[ 163.027345] kmemleak: Early log buffer exceeded (3329), please increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE
[ 163.169263] Calibrating delay using timer specific routine.. 804.17 BogoMIPS (lpj=4020880)
[ 163.169341] pid_max: default: 32768 minimum: 301
[ 163.170354] Mount-cache hash table entries: 4096 (order: 2, 32768 bytes)
[ 163.170426] Mountpoint-cache hash table entries: 4096 (order: 2, 32768 bytes)
[ 163.191280] CPU 7: synchronized TICK with master CPU (last diff -8 cycles, maxerr 677 cycles)
[ 163.191904] Brought up 2 CPUs
[ 163.196096] devtmpfs: initialized
[ 163.199102] Performance events: No support for PMU type 'ultra12'
[ 163.282260] atomic64_test: passed
[ 163.284207] kworker/u4:0 (20) used greatest stack depth: 8216 bytes left
[ 163.300285] device-tree: Duplicate name in base, renamed to "fhc#1"
[ 163.307412] device-tree: Duplicate name in base, renamed to "counter-timer#1"
[ 163.312131] device-tree: Duplicate name in base, renamed to "fhc#2"
[ 163.314228] device-tree: Duplicate name in base, renamed to "counter-timer#2"
[ 163.318010] device-tree: Duplicate name in base, renamed to "counter-timer#3"
[ 163.323548] device-tree: Duplicate name in base, renamed to "fhc#3"
[ 163.325699] device-tree: Duplicate name in base, renamed to "counter-timer#4"
[ 163.330745] device-tree: Duplicate name in base, renamed to "counter-timer#5"
[ 163.333752] NET: Registered protocol family 16
[ 163.344321] kworker/u4:0 (31) used greatest stack depth: 7976 bytes left
[ 163.347152] kworker/u4:0 (34) used greatest stack depth: 7896 bytes left
[ 163.390763] SYSIO: UPA portID ffffffff, at 000001c400000000
[ 163.400388] SYSIO: UPA portID ffffffff, at 000001c600000000
[ 163.410018] SYSIO: UPA portID ffffffff, at 000001d400000000
[ 163.420198] SYSIO: UPA portID ffffffff, at 000001d600000000
[ 163.439052] /pci@e,4000: PCI IO[1dc02010000] MEM[1dd80000000]
[ 163.439288] /pci@e,4000: PSYCHO PCI Bus Module ver[4:0]
[ 163.439377] PCI: Scanning PBM /pci@e,4000
[ 163.440634] psycho f01bf7bc: PCI host bridge to bus 0000:00
[ 163.440713] pci_bus 0000:00: root bus resource [io 0x1dc02010000-0x1dc0201ffff] (bus address [0x0000-0xffff])
[ 163.440818] pci_bus 0000:00: root bus resource [mem 0x1dd80000000-0x1ddffffffff] (bus address [0x00000000-0x7fffffff])
[ 163.440929] pci_bus 0000:00: root bus resource [bus 00]
[ 163.445838] /pci@e,2000: PCI IO[1dc02000000] MEM[1dd00000000]
[ 163.445927] /pci@e,2000: PSYCHO PCI Bus Module ver[4:0]
[ 163.445984] PCI: Scanning PBM /pci@e,2000
[ 163.446800] psycho f01c88e0: PCI host bridge to bus 0001:80
[ 163.446876] pci_bus 0001:80: root bus resource [io 0x1dc02000000-0x1dc0200ffff] (bus address [0x0000-0xffff])
[ 163.446983] pci_bus 0001:80: root bus resource [mem 0x1dd00000000-0x1dd7fffffff] (bus address [0x00000000-0x7fffffff])
[ 163.447088] pci_bus 0001:80: root bus resource [bus 80]
[ 163.457405] /pci@f,4000: PCI IO[1de02010000] MEM[1df80000000]
[ 163.457494] /pci@f,4000: PSYCHO PCI Bus Module ver[4:0]
[ 163.457549] PCI: Scanning PBM /pci@f,4000
[ 163.458367] psycho f01ca118: PCI host bridge to bus 0002:00
[ 163.458443] pci_bus 0002:00: root bus resource [io 0x1de02010000-0x1de0201ffff] (bus address [0x0000-0xffff])
[ 163.458547] pci_bus 0002:00: root bus resource [mem 0x1df80000000-0x1dfffffffff] (bus address [0x00000000-0x7fffffff])
[ 163.458653] pci_bus 0002:00: root bus resource [bus 00]
[ 163.461719] /pci@f,2000: PCI IO[1de02000000] MEM[1df00000000]
[ 163.461804] /pci@f,2000: PSYCHO PCI Bus Module ver[4:0]
[ 163.461859] PCI: Scanning PBM /pci@f,2000
[ 163.462668] psycho f01d320c: PCI host bridge to bus 0003:80
[ 163.462743] pci_bus 0003:80: root bus resource [io 0x1de02000000-0x1de0200ffff] (bus address [0x0000-0xffff])
[ 163.462855] pci_bus 0003:80: root bus resource [mem 0x1df00000000-0x1df7fffffff] (bus address [0x00000000-0x7fffffff])
[ 163.462964] pci_bus 0003:80: root bus resource [bus 80]
[ 163.580345] vgaarb: loaded
[ 163.584298] SCSI subsystem initialized
[ 163.592449] /central/fhc@0,f8800000/eeprom@0,908000: Mostek regs at 0x1fff8908000
[ 163.595898] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e] (Central)
[ 163.596622] fhc: Board #3, Version[1] PartID[fa0] Manuf[3e] (JTAG Master)
[ 163.597384] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e]
[ 163.598197] fhc: Board #5, Version[1] PartID[fa0] Manuf[3e]
[ 163.598978] fhc: Board #7, Version[1] PartID[fa0] Manuf[3e]
[ 163.600178] clock_board: Detected 5 slot Enterprise system.
[ 163.690823] DMA-API: preallocated 32768 debug entries
[ 163.690902] DMA-API: debugging enabled by kernel config
[ 163.693159] Switched to clocksource tick
[ 163.703829] kworker/u4:0 (280) used greatest stack depth: 7752 bytes left
[ 163.754938] NET: Registered protocol family 2
[ 163.757716] TCP established hash table entries: 16384 (order: 4, 131072 bytes)
[ 163.758687] TCP bind hash table entries: 16384 (order: 7, 1048576 bytes)
[ 163.768861] TCP: Hash tables configured (established 16384 bind 16384)
[ 163.769822] TCP: reno registered
[ 163.769975] UDP hash table entries: 1024 (order: 4, 163840 bytes)
[ 163.771566] UDP-Lite hash table entries: 1024 (order: 4, 163840 bytes)
[ 163.775400] NET: Registered protocol family 1
[ 163.775741] PCI: CLS 0 bytes, default 64
[ 163.784319] futex hash table entries: 512 (order: 3, 65536 bytes)
[ 163.784865] ====[ backtrace testing ]===========
[ 163.784908] Testing a backtrace from process context.
[ 163.784952] The following trace is a kernel self test and not a bug!
[ 163.785015] CPU: 6 PID: 1 Comm: swapper/6 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
[ 163.785076] Call Trace:
[ 163.785122] [00000000004cd80c] backtrace_regression_test+0x2c/0x100
[ 163.785183] [0000000000426ea4] do_one_initcall+0xe4/0x1e0
[ 163.785250] [0000000000a40b44] kernel_init_freeable+0x120/0x1d0
[ 163.785326] [0000000000865a84] kernel_init+0x4/0x100
[ 163.785389] [0000000000406104] ret_from_fork+0x1c/0x2c
[ 163.785436] [0000000000000000] (null)
[ 163.785477] Testing a backtrace from irq context.
[ 163.785519] The following trace is a kernel self test and not a bug!
[ 163.786004] CPU: 6 PID: 3 Comm: ksoftirqd/6 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
[ 163.786068] Call Trace:
[ 163.786116] [00000000004cd7c4] backtrace_test_irq_callback+0x4/0x20
[ 163.786183] [000000000045f278] tasklet_action+0x98/0x120
[ 163.786238] [000000000045f3f0] __do_softirq+0xf0/0x240
[ 163.786294] [000000000045f568] run_ksoftirqd+0x28/0x80
[ 163.786373] [000000000047e3e4] smpboot_thread_fn+0x244/0x280
[ 163.786440] [0000000000479ef0] kthread+0xb0/0xe0
[ 163.786496] [0000000000406104] ret_from_fork+0x1c/0x2c
[ 163.786546] [0000000000000000] (null)
[ 163.786707] Testing a saved backtrace.
[ 163.786753] The following trace is a kernel self test and not a bug!
[ 163.786810] [<00000000004cd8a8>] backtrace_regression_test+0xc8/0x100
[ 163.786888] [<0000000000426ea4>] do_one_initcall+0xe4/0x1e0
[ 163.786952] [<0000000000a40b44>] kernel_init_freeable+0x120/0x1d0
[ 163.787022] [<0000000000865a84>] kernel_init+0x4/0x100
[ 163.787088] [<0000000000406104>] ret_from_fork+0x1c/0x2c
[ 163.787153] [< (null)>] (null)
[ 163.787207] ====[ end of backtrace testing ]====
[ 163.787332] audit: initializing netlink subsys (disabled)
[ 163.787886] audit: type=2000 audit(2.050:1): initialized
[ 163.791649] HugeTLB registered 8 MB page size, pre-allocated 0 pages
[ 163.797716] msgmni has been set to 3980
[ 163.803398] io scheduler noop registered
[ 163.803651] io scheduler cfq registered (default)
[ 163.803717] start plist test
[ 163.826582] end plist test
[ 163.831561] test_string_helpers: Running tests...
[ 164.044577] zs f005de3c: ttyS0 at MMIO 0x1fff8902000 (irq = 2, base_baud = 307200) is a zs (ESCC)
[ 164.044724] Console: ttyS0 (SunZilog zs0)
[ 179.468351] console [ttyS0] enabled
[ 179.496405] zs f005de3c: ttyS1 at MMIO 0x1fff8902004 (irq = 2, base_baud = 307200) is a zs (ESCC)
[ 179.795321] f005df14: Keyboard at MMIO 0x1fff8904000 (irq = 2) is a zs
[ 179.855846] f005df14: Mouse at MMIO 0x1fff8904004 (irq = 2) is a zs
[ 179.954009] loop: module loaded
[ 179.975578] PCI: Enabling device: (0003:80:02.0), cmd 3
[ 185.152853] scsi0: Missing case in ahd_handle_scsiint. status = 0
[ 185.208135] >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<
scsi0: Dumping Card State at program address 0x0 Mode 0x33
[ 185.334228] Card was paused
[ 185.351888] INTSTAT[0x8]:(SCSIINT) SELOID[0x0] SELID[0x0] HS_MAILBOX[0x0]
[ 185.418562] INTCTL[0x0] SEQINTSTAT[0x0] SAVED_MODE[0x25] DFFSTAT[0x33]:(CURRFIFO_NONE|FIFO0FREE|FIFO1FREE)
[ 185.519625] SCSISIGI[0x0]:(P_DATAOUT) SCSIPHASE[0x0] SCSIBUS[0x0]
[ 185.577970] LASTPHASE[0x1]:(P_DATAOUT|P_BUSFREE) SCSISEQ0[0x0]
[ 185.633186] SCSISEQ1[0x12]:(ENAUTOATNP|ENRSELI) SEQCTL0[0x0] SEQINTCTL[0x0]
[ 185.701952] SEQ_FLAGS[0x0] SEQ_FLAGS2[0x0] QFREEZE_COUNT[0x0]
[ 185.756130] KERNEL_QFREEZE_COUNT[0x0] MK_MESSAGE_SCB[0xff00] MK_MESSAGE_SCSIID[0xff]
[ 185.834268] SSTAT0[0x0] SSTAT1[0x0] SSTAT2[0x0] SSTAT3[0x0] PERRDIAG[0x0]
[ 185.900952] SIMODE1[0xa4]:(ENSCSIPERR|ENSCSIRST|ENSELTIMO) LQISTAT0[0x0]
[ 185.966586] LQISTAT1[0x0] LQISTAT2[0x0] LQOSTAT0[0x0] LQOSTAT1[0x0]
[ 186.027015] LQOSTAT2[0x0]
[ 186.043701]
SCB Count = 8 CMDS_PENDING = 0 LASTSCB 0xffff CURRSCB 0x0 NEXTSCB 0x0
[ 186.119786] qinstart = 0 qinfifonext = 0
QINFIFO:
WAITING_TID_QUEUES:
[ 186.183326] Pending list:
Total 0
[ 186.208314] Kernel Free SCB list: 7 6 5 4 3 2 1 0
[ 186.249973] Sequencer Complete DMA-inprog list:
[ 186.289562] Sequencer Complete list:
[ 186.317694] Sequencer DMA-Up and Complete list:
[ 186.357284] Sequencer On QFreeze and Complete list:
[ 186.401059]
scsi0: FIFO0 Free, LONGJMP == 0x803b, SCB 0x0
[ 186.454230] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
[ 186.544821] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
[ 186.622965] SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
[ 186.689642] SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
[ 186.766758] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
scsi0: FIFO1 Free, LONGJMP == 0x80bc, SCB 0x0
[ 186.878272] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
[ 186.968863] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
[ 187.047006] SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
[ 187.113688] SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
[ 187.190796] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
LQIN: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
[ 187.342907] scsi0: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x52
[ 187.403351] scsi0: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x0
[ 187.449192] scsi0: SAVED_SCSIID = 0x0 SAVED_LUN = 0x0
[ 187.496052] SIMODE0[0x6c]:(ENOVERRUN|ENIOERR|ENSELDI|ENSELDO)
[ 187.550231] CCSCBCTL[0x0]
[ 187.566913] scsi0: REG0 == 0x45d1, SINDEX = 0x0, DINDEX = 0x0
[ 187.620062] scsi0: SCBPTR == 0x1ff, SCB_NEXT == 0xff00, SCB_NEXT2 == 0x0
[ 187.684665] CDB ff 1 0 0 0 0
[ 187.703390] STACK: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
<<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>
[ 187.806958] scsi host0: Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 3.0
<Adaptec 29320ALP PCIx Ultra320 SCSI adapter>
aic7901: Ultra320 Wide Channel A, SCSI Id=7, PCI 33 or 66MHz, 512 SCBs
[ 188.016407] qla1280: QLA1040 found on PCI bus 0, dev 3
[ 188.060231] PCI: Enabling device: (0002:00:03.0), cmd 7
[ 188.275021] ===============================
[ 188.309351] [ INFO: suspicious RCU usage. ]
[ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted
[ 188.394786] -------------------------------
[ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used illegally while idle!
[ 188.505235]
other info that might help us debug this:
[ 188.554230]
RCU used illegally from idle CPU!
rcu_scheduler_active = 1, debug_locks = 0
[ 188.637587] RCU used illegally from extended quiescent state!
[ 188.690684] 3 locks held by swapper/7/0:
[ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60
[ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400
[ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40
[ 188.973043]
stack backtrace:
[ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
[ 189.076187] Call Trace:
[ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100
[ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40
[ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400
[ 189.252258] [000000000048554c] default_wake_function+0xc/0x20
[ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80
[ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40
[ 189.406456] [0000000000495e08] complete+0x28/0x60
[ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20
[ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60
[ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180
[ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600
[ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0
[ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140
[ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20
[ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0
[ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40
[ 190.269728] random: nonblocking pool is initialized
[ 190.828808] scsi(1:0): Resetting SCSI BUS
[ 193.862671] scsi host1: QLogic QLA1040 PCI to SCSI Host Adapter
Firmware version: 7.65.06, Driver version 3.27.1
[ 193.976290] blk-mq: reduced tag depth to 10240
[ 194.037930] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 8.07.00.16-k.
[ 194.118405] PCI: Enabling device: (0001:80:02.0), cmd 3
[ 194.165280] qla2xxx [0001:80:02.0]-001d: : Found an ISP2200 irq 49 iobase 0x000001dd00002000.
[ 194.353211] qla2xxx 0001:80:02.0: Direct firmware load for ql2200_fw.bin failed with error -2
[ 194.437839] qla2xxx 0001:80:02.0: Falling back to user helper
[ 194.491932] scsi 1:0:2:0: Direct-Access IBM DDYS-T18350M S96H PQ: 0 ANSI: 3
[ 194.573022] scsi(1:0:2:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
[ 194.823272] scsi 1:0:4:0: Direct-Access IBM DDYS-T18350M S80D PQ: 0 ANSI: 3
[ 194.903416] scsi(1:0:4:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
[ 195.662569] scsi 1:0:10:0: Direct-Access HP 9.10GB A 80-6331 PQ: 0 ANSI: 2
[ 195.743713] scsi(1:0:10:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
[ 195.830214] scsi 1:0:11:0: Direct-Access IBM DDRS-34560D DC1B PQ: 0 ANSI: 2
[ 195.911336] scsi(1:0:11:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
[ 196.006929] scsi 1:0:12:0: Direct-Access HP 4.26GB A 80-0430 0430 PQ: 0 ANSI: 2
[ 196.087903] scsi(1:0:12:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
[ 196.187208] scsi 1:0:13:0: Direct-Access HP 2.13GB A 80-0430 0430 PQ: 0 ANSI: 2
[ 196.268525] scsi(1:0:13:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
[ 254.692919] qla2xxx [0001:80:02.0]-0063:2: Failed to load firmware image (ql2200_fw.bin).
[ 254.773218] qla2xxx [0001:80:02.0]-0083:2: Fimware image unavailable.
[ 254.834679] qla2xxx [0001:80:02.0]-0084:2: Firmware images can be retrieved from: http://ldriver.qlogic.com/firmware/.
[ 254.947216] qla2xxx [0001:80:02.0]-00cf:2: Setup chip ****FAILED****.
[ 255.008657] qla2xxx [0001:80:02.0]-00d6:2: Failed to initialize adapter - Adapter flags 2.
[ 255.097006] sunhme.c:v3.10 August 26, 2008 David S. Miller (davem@davemloft.net)
[ 255.170460] eth0: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:b6:ee:e2
[ 255.235445] sd 1:0:4:0: [sdb] 35843670 512-byte logical blocks: (18.3 GB/17.0 GiB)
[ 255.237573] eth1: Quattro HME slot 0 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:94
[ 255.239977] eth2: Quattro HME slot 1 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:95
[ 255.242388] eth3: Quattro HME slot 2 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:96
[ 255.244859] eth4: Quattro HME slot 3 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:97
[ 255.247283] eth5: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:b6:ee:e2
[ 255.247840] PCI: Enabling device: (0000:00:01.1), cmd 2
[ 255.250196] eth6: HAPPY MEAL (PCI/CheerIO) 10/100BaseT Ethernet 08:00:20:b6:ee:e2
[ 255.251312] sd 1:0:2:0: [sda] 35843670 512-byte logical blocks: (18.3 GB/17.0 GiB)
[ 255.310326] sd 1:0:2:0: [sda] Write Protect is off
[ 255.310343] sd 1:0:2:0: [sda] Mode Sense: cb 00 00 08
[ 255.310591] sd 1:0:10:0: [sdc] 17773524 512-byte logical blocks: (9.10 GB/8.47 GiB)
[ 255.310697] sd 1:0:11:0: [sdd] 8925000 512-byte logical blocks: (4.56 GB/4.25 GiB)
[ 255.311960] mousedev: PS/2 mouse device common for all mice
[ 255.315824] rtc-m48t59 rtc-m48t59.0: rtc core: registered m48t59 as rtc0
[ 255.317082] TCP: cubic registered
[ 255.317108] NET: Registered protocol family 17
[ 255.318580] registered taskstats version 1
[ 255.385635] sd 1:0:12:0: [sde] 8330543 512-byte logical blocks: (4.26 GB/3.97 GiB)
[ 255.385792] sd 1:0:10:0: [sdc] Write Protect is off
[ 255.385809] sd 1:0:10:0: [sdc] Mode Sense: 9f 00 10 08
[ 255.385905] sd 1:0:11:0: [sdd] Write Protect is off
[ 255.385921] sd 1:0:11:0: [sdd] Mode Sense: b9 00 00 08
[ 255.460208] rtc-m48t59 rtc-m48t59.0: setting system clock to 2014-11-06 14:44:49 UTC (1415285089)
[ 255.460593] sd 1:0:2:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 255.460897] sd 1:0:12:0: [sde] Write Protect is off
[ 255.460913] sd 1:0:12:0: [sde] Mode Sense: 9f 00 10 08
[ 255.535967] sd 1:0:10:0: [sdc] Write cache: disabled, read cache: enabled, supports DPO and FUA
[ 255.536140] sd 1:0:13:0: [sdf] 4165272 512-byte logical blocks: (2.13 GB/1.98 GiB)
[ 255.536319] sd 1:0:11:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 255.611389] sd 1:0:12:0: [sde] Write cache: disabled, read cache: enabled, supports DPO and FUA
[ 255.611526] sd 1:0:13:0: [sdf] Write Protect is off
[ 255.611542] sd 1:0:13:0: [sdf] Mode Sense: 9f 00 10 08
[ 255.724337] sd 1:0:13:0: [sdf] Write cache: disabled, read cache: enabled, supports DPO and FUA
[ 255.960802] sda: sda1 sda2 sda3 sda4
[ 256.036886] sdd: unknown partition table
[ 256.038024] sdc: unknown partition table
[ 256.161971] sde: unknown partition table
[ 256.226521] sdf: unknown partition table
[ 256.287571] sd 1:0:2:0: [sda] Attached SCSI disk
[ 256.320837] sd 1:0:11:0: [sdd] Attached SCSI disk
[ 256.321195] sd 1:0:10:0: [sdc] Attached SCSI disk
[ 256.438589] sd 1:0:12:0: [sde] Attached SCSI disk
[ 256.484470] sd 1:0:13:0: [sdf] Attached SCSI disk
[ 257.730003] sd 1:0:4:0: [sdb] Write Protect is off
[ 257.769724] sd 1:0:4:0: [sdb] Mode Sense: cb 00 00 08
[ 257.816196] sd 1:0:4:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 257.932380] sdb: unknown partition table
[ 257.967850] sd 1:0:4:0: [sdb] Attached SCSI disk
[ 258.009691] EXT4-fs (sda2): mounting ext3 file system using the ext4 subsystem
[ 258.103029] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
[ 258.177139] VFS: Mounted root (ext3 filesystem) readonly on device 8:2.
[ 258.268770] devtmpfs: mounted
[ 259.504165] stty (523) used greatest stack depth: 5544 bytes left
[ 261.465793] systemd-udevd[610]: starting version 215
[ 262.297628] hme f009fba8 eth7: renamed from eth2
[ 262.430354] systemd-udevd[634]: renamed network interface eth2 to eth7
[ 262.430471] hme f0099bf4 eth9: renamed from eth1
[ 262.553566] systemd-udevd[648]: renamed network interface eth1 to eth9
[ 262.633511] hme f008d070 eth1: renamed from eth0
[ 262.697674] hwclock (658) used greatest stack depth: 4168 bytes left
[ 262.773763] hme f00ab960 eth8: renamed from eth4
[ 262.873209] systemd-udevd[635]: renamed network interface eth0 to eth1
[ 262.918444] hme 0000:00:01.1 eth0: renamed from eth6
[ 262.918716] systemd-udevd[640]: renamed network interface eth4 to eth8
[ 263.053804] systemd-udevd[643]: renamed network interface eth6 to eth0
[ 263.114350] hme f01673a8 eth2: renamed from eth5
[ 263.192734] hme f00a5a84 eth10: renamed from eth3
[ 263.238837] systemd-udevd[641]: renamed network interface eth5 to eth2
[ 263.355961] systemd-udevd[639]: renamed network interface eth3 to eth10
[ 267.436399] Adding 787176k swap on /dev/sda4. Priority:-1 extents:1 across:787176k
[ 267.775195] EXT4-fs (sda2): re-mounted. Opts: (null)
[ 268.309702] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
[ 272.239364] EXT4-fs (sda1): mounting ext3 file system using the ext4 subsystem
[ 272.321644] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[ 280.082651] eth0: Link is up using internal transceiver at 100Mb/s, Full Duplex.
[ 284.153738] basename (1686) used greatest stack depth: 3752 bytes left
--
Meelis Roos (mroos@linux.ee)
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: blk_mq: suspicious RCU usage, rcu_read_lock() used illegally while idle!
2014-11-06 15:45 blk_mq: suspicious RCU usage, rcu_read_lock() used illegally while idle! Meelis Roos
@ 2014-11-06 15:46 ` Christoph Hellwig
2014-11-06 17:11 ` Paul E. McKenney
0 siblings, 1 reply; 11+ messages in thread
From: Christoph Hellwig @ 2014-11-06 15:46 UTC (permalink / raw)
To: Meelis Roos; +Cc: linux-scsi, Christoph Hellwig, Jens Axboe, Paul E. McKenney
Without help from Paul I can't even make sense of the message..
On Thu, Nov 06, 2014 at 05:45:43PM +0200, Meelis Roos wrote:
> I tested a machine with multiple scsi adapters today with latest kernel
> and found the following warning in the logs. It is probably from QLA1040
> adapter initialization, full dmesg is below. Adaptec SCSI card dumps is
> normal on this server, it is usually there and seems to be harmless
> (maybe a supurious IRQ somewhere - but this should not be relevant).
>
> The message is not there for scsi_mod.use_blk_mq=0 boot.
>
> Booting 3.17.0 with scsi_mod.use_blk_mq=1 does not show this message
> either.
>
> [ 188.275021] ===============================
> [ 188.309351] [ INFO: suspicious RCU usage. ]
> [ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted
> [ 188.394786] -------------------------------
> [ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used
> illegally while idle!
> [ 188.505235]
> other info that might help us debug this:
>
> [ 188.554230]
> RCU used illegally from idle CPU!
> rcu_scheduler_active = 1, debug_locks = 0
> [ 188.637587] RCU used illegally from extended quiescent state!
> [ 188.690684] 3 locks held by swapper/7/0:
> [ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60
> [ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400
> [ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40
> [ 188.973043]stack backtrace:
> [ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> [ 189.076187] Call Trace:
> [ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100
> [ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40
> [ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400
> [ 189.252258] [000000000048554c] default_wake_function+0xc/0x20
> [ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80
> [ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40
> [ 189.406456] [0000000000495e08] complete+0x28/0x60
> [ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20
> [ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60
> [ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180
> [ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600
> [ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0
> [ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140
> [ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20
> [ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0
> [ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40
>
>
> Full dmesg:
>
> [ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 3.2.30 2002/10/25 14:03'
> [ 0.000000] PROMLIB: Root node compatible:
> [ 0.000000] Linux version 3.18.0-rc3-00068-g20f3963-dirty (mroos@korvits) (gcc version 4.9.1 (Debian 4.9.1-18) ) #54 SMP Thu Nov 6 14:37:34 EET 2014
> [ 0.000000] debug: ignoring loglevel setting.
> [ 0.000000] bootconsole [earlyprom0] enabled
> [ 0.000000] ARCH: SUN4U
> [ 0.000000] Ethernet address: 08:00:20:b6:ee:e2
> [ 0.000000] MM: PAGE_OFFSET is 0xfffff80000000000 (max_phys_bits == 40)
> [ 0.000000] MM: VMALLOC [0x0000000100000000 --> 0x0000060000000000]
> [ 0.000000] MM: VMEMMAP [0x0000060000000000 --> 0x00000c0000000000]
> [ 0.000000] Kernel: Using 6 locked TLB entries for main kernel image.
> [ 0.000000] Remapping the kernel... done.
> [ 0.000000] kmemleak: Kernel memory leak detector disabled
> [ 0.000000] OF stdout device is: /central@1f,0/fhc@0,f8800000/zs@0,902000:a
> [ 0.000000] PROM: Built device tree with 169763 bytes of memory.
> [ 0.000000] Top of RAM: 0x7fcf2000, Total RAM: 0x7f8c0000
> [ 0.000000] Memory hole size: 4MB
> [ 0.000000] Allocated 2113536 bytes for kernel page tables.
> [ 0.000000] Zone ranges:
> [ 0.000000] Normal [mem 0x00000000-0x7fcf1fff]
> [ 0.000000] Movable zone start for each node
> [ 0.000000] Early memory node ranges
> [ 0.000000] node 0: [mem 0x00000000-0x7f7ddfff]
> [ 0.000000] node 0: [mem 0x7fc00000-0x7fcd1fff]
> [ 0.000000] node 0: [mem 0x7fce2000-0x7fcf1fff]
> [ 0.000000] Initmem setup node 0 [mem 0x00000000-0x7fcf1fff]
> [ 0.000000] On node 0 totalpages: 261216
> [ 0.000000] Normal zone: 2301 pages used for memmap
> [ 0.000000] Normal zone: 0 pages reserved
> [ 0.000000] Normal zone: 261216 pages, LIFO batch:15
> [ 0.000000] Booting Linux...
> [ 0.000000] CPU CAPS: [flush,stbar,swap,muldiv,v9,mul32,div32,v8plus]
> [ 0.000000] CPU CAPS: [vis]
> [ 0.000000] PERCPU: Embedded 7 pages/cpu @fffff8007f000000 s15808 r8192 d33344 u2097152
> [ 0.000000] pcpu-alloc: s15808 r8192 d33344 u2097152 alloc=1*4194304
> [ 0.000000] pcpu-alloc: [0] 6 7
> [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 258915
> [ 0.000000] Kernel command line: root=/dev/sda2 ro debug ignore_loglevel
> [ 0.000000] PID hash table entries: 4096 (order: 2, 32768 bytes)
> [ 0.000000] Dentry cache hash table entries: 262144 (order: 8, 2097152 bytes)
> [ 0.000000] Inode-cache hash table entries: 131072 (order: 7, 1048576 bytes)
> [ 0.000000] Sorting __ex_table...
> [ 0.000000] Memory: 2037784K/2089728K available (4533K kernel code, 305K rwdata, 1504K rodata, 576K init, 14539K bss, 51944K reserved)
> [ 0.000000] Hierarchical RCU implementation.
> [ 0.000000] RCU lockdep checking is enabled.
> [ 0.000000] RCU restricting CPUs from NR_CPUS=16 to nr_cpu_ids=8.
> [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=8
> [ 0.000000] NR_IRQS:2048 nr_irqs:2048 1
> [ 161.238391] clocksource: mult[2800000] shift[24]
> [ 161.277473] clockevent: mult[66666666] shift[32]
> [ 161.318721] Console: colour dummy device 80x25
> [ 161.355382] console [tty0] enabled
> [ 161.380218] bootconsole [earlyprom0] disabled
> [ 161.416696] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
> [ 161.416740] ... MAX_LOCKDEP_SUBCLASSES: 8
> [ 161.416765] ... MAX_LOCK_DEPTH: 48
> [ 161.416790] ... MAX_LOCKDEP_KEYS: 8191
> [ 161.416816] ... CLASSHASH_SIZE: 4096
> [ 161.416841] ... MAX_LOCKDEP_ENTRIES: 32768
> [ 161.416867] ... MAX_LOCKDEP_CHAINS: 65536
> [ 161.416892] ... CHAINHASH_SIZE: 32768
> [ 161.416918] memory used by lock dependency info: 8159 kB
> [ 161.416949] per task-struct memory footprint: 1920 bytes
> [ 161.416978] ------------------------
> [ 161.416999] | Locking API testsuite:
> [ 161.417019] ----------------------------------------------------------------------------
> [ 161.417061] | spin |wlock |rlock |mutex | wsem | rsem |
> [ 161.417104] --------------------------------------------------------------------------
> [ 161.417173] A-A deadlock: ok | ok | ok | ok | ok | ok |
> [ 161.457494] A-B-B-A deadlock: ok | ok | ok | ok | ok | ok |
> [ 161.495480] A-B-B-C-C-A deadlock: ok | ok | ok | ok | ok | ok |
> [ 161.533653] A-B-C-A-B-C deadlock: ok | ok | ok | ok | ok | ok |
> [ 161.571829] A-B-B-C-C-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
> [ 161.610241] A-B-C-D-B-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
> [ 161.648630] A-B-C-D-B-C-D-A deadlock: ok | ok | ok | ok | ok | ok |
> [ 161.687043] double unlock: ok | ok | ok | ok | ok | ok |
> [ 161.724876] initialize held: ok | ok | ok | ok | ok | ok |
> [ 161.762661] bad unlock order: ok | ok | ok | ok | ok | ok |
> [ 161.800701] --------------------------------------------------------------------------
> [ 161.800747] recursive read-lock: | ok | | ok |
> [ 161.813409] recursive read-lock #2: | ok | | ok |
> [ 161.826070] mixed read-write-lock: | ok | | ok |
> [ 161.838756] mixed write-read-lock: | ok | | ok |
> [ 161.851441] --------------------------------------------------------------------------
> [ 161.851489] hard-irqs-on + irq-safe-A/12: ok | ok | ok |
> [ 161.870404] soft-irqs-on + irq-safe-A/12: ok | ok | ok |
> [ 161.889387] hard-irqs-on + irq-safe-A/21: ok | ok | ok |
> [ 161.908303] soft-irqs-on + irq-safe-A/21: ok | ok | ok |
> [ 161.927281] sirq-safe-A => hirqs-on/12: ok | ok | ok |
> [ 161.946218] sirq-safe-A => hirqs-on/21: ok | ok | ok |
> [ 161.965194] hard-safe-A + irqs-on/12: ok | ok | ok |
> [ 161.984110] soft-safe-A + irqs-on/12: ok | ok | ok |
> [ 162.003086] hard-safe-A + irqs-on/21: ok | ok | ok |
> [ 162.022023] soft-safe-A + irqs-on/21: ok | ok | ok |
> [ 162.041005] hard-safe-A + unsafe-B #1/123: ok | ok | ok |
> [ 162.060021] soft-safe-A + unsafe-B #1/123: ok | ok | ok |
> [ 162.079090] hard-safe-A + unsafe-B #1/132: ok | ok | ok |
> [ 162.098089] soft-safe-A + unsafe-B #1/132: ok | ok | ok |
> [ 162.117160] hard-safe-A + unsafe-B #1/213: ok | ok | ok |
> [ 162.136184] soft-safe-A + unsafe-B #1/213: ok | ok | ok |
> [ 162.155258] hard-safe-A + unsafe-B #1/231: ok | ok | ok |
> [ 162.174253] soft-safe-A + unsafe-B #1/231: ok | ok | ok |
> [ 162.193316] hard-safe-A + unsafe-B #1/312: ok | ok | ok |
> [ 162.212268] soft-safe-A + unsafe-B #1/312: ok | ok | ok |
> [ 162.231264] hard-safe-A + unsafe-B #1/321: ok | ok | ok |
> [ 162.250265] soft-safe-A + unsafe-B #1/321: ok | ok | ok |
> [ 162.269312] hard-safe-A + unsafe-B #2/123: ok | ok | ok |
> [ 162.288321] soft-safe-A + unsafe-B #2/123: ok | ok | ok |
> [ 162.307393] hard-safe-A + unsafe-B #2/132: ok | ok | ok |
> [ 162.326395] soft-safe-A + unsafe-B #2/132: ok | ok | ok |
> [ 162.345469] hard-safe-A + unsafe-B #2/213: ok | ok | ok |
> [ 162.364485] soft-safe-A + unsafe-B #2/213: ok | ok | ok |
> [ 162.383569] hard-safe-A + unsafe-B #2/231: ok | ok | ok |
> [ 162.402578] soft-safe-A + unsafe-B #2/231: ok | ok | ok |
> [ 162.421652] hard-safe-A + unsafe-B #2/312: ok | ok | ok |
> [ 162.440662] soft-safe-A + unsafe-B #2/312: ok | ok | ok |
> [ 162.459750] hard-safe-A + unsafe-B #2/321: ok | ok | ok |
> [ 162.478756] soft-safe-A + unsafe-B #2/321: ok | ok | ok |
> [ 162.497822] hard-irq lock-inversion/123: ok | ok | ok |
> [ 162.516832] soft-irq lock-inversion/123: ok | ok | ok |
> [ 162.535924] hard-irq lock-inversion/132: ok | ok | ok |
> [ 162.554942] soft-irq lock-inversion/132: ok | ok | ok |
> [ 162.574036] hard-irq lock-inversion/213: ok | ok | ok |
> [ 162.593071] soft-irq lock-inversion/213: ok | ok | ok |
> [ 162.612151] hard-irq lock-inversion/231: ok | ok | ok |
> [ 162.631163] soft-irq lock-inversion/231: ok | ok | ok |
> [ 162.650245] hard-irq lock-inversion/312: ok | ok | ok |
> [ 162.669272] soft-irq lock-inversion/312: ok | ok | ok |
> [ 162.688368] hard-irq lock-inversion/321: ok | ok | ok |
> [ 162.707370] soft-irq lock-inversion/321: ok | ok | ok |
> [ 162.726457] hard-irq read-recursion/123: ok |
> [ 162.732811] soft-irq read-recursion/123: ok |
> [ 162.739223] hard-irq read-recursion/132: ok |
> [ 162.745568] soft-irq read-recursion/132: ok |
> [ 162.751969] hard-irq read-recursion/213: ok |
> [ 162.758313] soft-irq read-recursion/213: ok |
> [ 162.764715] hard-irq read-recursion/231: ok |
> [ 162.771062] soft-irq read-recursion/231: ok |
> [ 162.777472] hard-irq read-recursion/312: ok |
> [ 162.783817] soft-irq read-recursion/312: ok |
> [ 162.790220] hard-irq read-recursion/321: ok |
> [ 162.796571] soft-irq read-recursion/321: ok |
> [ 162.802972] --------------------------------------------------------------------------
> [ 162.803016] | Wound/wait tests |
> [ 162.803039] ---------------------
> [ 162.803064] ww api failures: ok | ok | ok |
> [ 162.822112] ww contexts mixing: ok | ok |
> [ 162.834785] finishing ww context: ok | ok | ok | ok |
> [ 162.860095] locking mismatches: ok | ok | ok |
> [ 162.879128] EDEADLK handling: ok | ok | ok | ok | ok | ok | ok | ok | ok | ok |
> [ 162.942686] spinlock nest unlocked: ok |
> [ 162.949005] -----------------------------------------------------
> [ 162.949044] |block | try |context|
> [ 162.949082] -----------------------------------------------------
> [ 162.949121] context: ok | ok | ok |
> [ 162.968211] try: ok | ok | ok |
> [ 162.987181] block: ok | ok | ok |
> [ 163.006186] spinlock: ok | ok | ok |
> [ 163.025283] -------------------------------------------------------
> [ 163.025322] Good, all 253 testcases passed! |
> [ 163.025349] ---------------------------------
> [ 163.027126] ODEBUG: selftest passed
> [ 163.027345] kmemleak: Early log buffer exceeded (3329), please increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE
> [ 163.169263] Calibrating delay using timer specific routine.. 804.17 BogoMIPS (lpj=4020880)
> [ 163.169341] pid_max: default: 32768 minimum: 301
> [ 163.170354] Mount-cache hash table entries: 4096 (order: 2, 32768 bytes)
> [ 163.170426] Mountpoint-cache hash table entries: 4096 (order: 2, 32768 bytes)
> [ 163.191280] CPU 7: synchronized TICK with master CPU (last diff -8 cycles, maxerr 677 cycles)
> [ 163.191904] Brought up 2 CPUs
> [ 163.196096] devtmpfs: initialized
> [ 163.199102] Performance events: No support for PMU type 'ultra12'
> [ 163.282260] atomic64_test: passed
> [ 163.284207] kworker/u4:0 (20) used greatest stack depth: 8216 bytes left
> [ 163.300285] device-tree: Duplicate name in base, renamed to "fhc#1"
> [ 163.307412] device-tree: Duplicate name in base, renamed to "counter-timer#1"
> [ 163.312131] device-tree: Duplicate name in base, renamed to "fhc#2"
> [ 163.314228] device-tree: Duplicate name in base, renamed to "counter-timer#2"
> [ 163.318010] device-tree: Duplicate name in base, renamed to "counter-timer#3"
> [ 163.323548] device-tree: Duplicate name in base, renamed to "fhc#3"
> [ 163.325699] device-tree: Duplicate name in base, renamed to "counter-timer#4"
> [ 163.330745] device-tree: Duplicate name in base, renamed to "counter-timer#5"
> [ 163.333752] NET: Registered protocol family 16
> [ 163.344321] kworker/u4:0 (31) used greatest stack depth: 7976 bytes left
> [ 163.347152] kworker/u4:0 (34) used greatest stack depth: 7896 bytes left
> [ 163.390763] SYSIO: UPA portID ffffffff, at 000001c400000000
> [ 163.400388] SYSIO: UPA portID ffffffff, at 000001c600000000
> [ 163.410018] SYSIO: UPA portID ffffffff, at 000001d400000000
> [ 163.420198] SYSIO: UPA portID ffffffff, at 000001d600000000
> [ 163.439052] /pci@e,4000: PCI IO[1dc02010000] MEM[1dd80000000]
> [ 163.439288] /pci@e,4000: PSYCHO PCI Bus Module ver[4:0]
> [ 163.439377] PCI: Scanning PBM /pci@e,4000
> [ 163.440634] psycho f01bf7bc: PCI host bridge to bus 0000:00
> [ 163.440713] pci_bus 0000:00: root bus resource [io 0x1dc02010000-0x1dc0201ffff] (bus address [0x0000-0xffff])
> [ 163.440818] pci_bus 0000:00: root bus resource [mem 0x1dd80000000-0x1ddffffffff] (bus address [0x00000000-0x7fffffff])
> [ 163.440929] pci_bus 0000:00: root bus resource [bus 00]
> [ 163.445838] /pci@e,2000: PCI IO[1dc02000000] MEM[1dd00000000]
> [ 163.445927] /pci@e,2000: PSYCHO PCI Bus Module ver[4:0]
> [ 163.445984] PCI: Scanning PBM /pci@e,2000
> [ 163.446800] psycho f01c88e0: PCI host bridge to bus 0001:80
> [ 163.446876] pci_bus 0001:80: root bus resource [io 0x1dc02000000-0x1dc0200ffff] (bus address [0x0000-0xffff])
> [ 163.446983] pci_bus 0001:80: root bus resource [mem 0x1dd00000000-0x1dd7fffffff] (bus address [0x00000000-0x7fffffff])
> [ 163.447088] pci_bus 0001:80: root bus resource [bus 80]
> [ 163.457405] /pci@f,4000: PCI IO[1de02010000] MEM[1df80000000]
> [ 163.457494] /pci@f,4000: PSYCHO PCI Bus Module ver[4:0]
> [ 163.457549] PCI: Scanning PBM /pci@f,4000
> [ 163.458367] psycho f01ca118: PCI host bridge to bus 0002:00
> [ 163.458443] pci_bus 0002:00: root bus resource [io 0x1de02010000-0x1de0201ffff] (bus address [0x0000-0xffff])
> [ 163.458547] pci_bus 0002:00: root bus resource [mem 0x1df80000000-0x1dfffffffff] (bus address [0x00000000-0x7fffffff])
> [ 163.458653] pci_bus 0002:00: root bus resource [bus 00]
> [ 163.461719] /pci@f,2000: PCI IO[1de02000000] MEM[1df00000000]
> [ 163.461804] /pci@f,2000: PSYCHO PCI Bus Module ver[4:0]
> [ 163.461859] PCI: Scanning PBM /pci@f,2000
> [ 163.462668] psycho f01d320c: PCI host bridge to bus 0003:80
> [ 163.462743] pci_bus 0003:80: root bus resource [io 0x1de02000000-0x1de0200ffff] (bus address [0x0000-0xffff])
> [ 163.462855] pci_bus 0003:80: root bus resource [mem 0x1df00000000-0x1df7fffffff] (bus address [0x00000000-0x7fffffff])
> [ 163.462964] pci_bus 0003:80: root bus resource [bus 80]
> [ 163.580345] vgaarb: loaded
> [ 163.584298] SCSI subsystem initialized
> [ 163.592449] /central/fhc@0,f8800000/eeprom@0,908000: Mostek regs at 0x1fff8908000
> [ 163.595898] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e] (Central)
> [ 163.596622] fhc: Board #3, Version[1] PartID[fa0] Manuf[3e] (JTAG Master)
> [ 163.597384] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e]
> [ 163.598197] fhc: Board #5, Version[1] PartID[fa0] Manuf[3e]
> [ 163.598978] fhc: Board #7, Version[1] PartID[fa0] Manuf[3e]
> [ 163.600178] clock_board: Detected 5 slot Enterprise system.
> [ 163.690823] DMA-API: preallocated 32768 debug entries
> [ 163.690902] DMA-API: debugging enabled by kernel config
> [ 163.693159] Switched to clocksource tick
> [ 163.703829] kworker/u4:0 (280) used greatest stack depth: 7752 bytes left
> [ 163.754938] NET: Registered protocol family 2
> [ 163.757716] TCP established hash table entries: 16384 (order: 4, 131072 bytes)
> [ 163.758687] TCP bind hash table entries: 16384 (order: 7, 1048576 bytes)
> [ 163.768861] TCP: Hash tables configured (established 16384 bind 16384)
> [ 163.769822] TCP: reno registered
> [ 163.769975] UDP hash table entries: 1024 (order: 4, 163840 bytes)
> [ 163.771566] UDP-Lite hash table entries: 1024 (order: 4, 163840 bytes)
> [ 163.775400] NET: Registered protocol family 1
> [ 163.775741] PCI: CLS 0 bytes, default 64
> [ 163.784319] futex hash table entries: 512 (order: 3, 65536 bytes)
> [ 163.784865] ====[ backtrace testing ]===========
> [ 163.784908] Testing a backtrace from process context.
> [ 163.784952] The following trace is a kernel self test and not a bug!
> [ 163.785015] CPU: 6 PID: 1 Comm: swapper/6 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> [ 163.785076] Call Trace:
> [ 163.785122] [00000000004cd80c] backtrace_regression_test+0x2c/0x100
> [ 163.785183] [0000000000426ea4] do_one_initcall+0xe4/0x1e0
> [ 163.785250] [0000000000a40b44] kernel_init_freeable+0x120/0x1d0
> [ 163.785326] [0000000000865a84] kernel_init+0x4/0x100
> [ 163.785389] [0000000000406104] ret_from_fork+0x1c/0x2c
> [ 163.785436] [0000000000000000] (null)
> [ 163.785477] Testing a backtrace from irq context.
> [ 163.785519] The following trace is a kernel self test and not a bug!
> [ 163.786004] CPU: 6 PID: 3 Comm: ksoftirqd/6 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> [ 163.786068] Call Trace:
> [ 163.786116] [00000000004cd7c4] backtrace_test_irq_callback+0x4/0x20
> [ 163.786183] [000000000045f278] tasklet_action+0x98/0x120
> [ 163.786238] [000000000045f3f0] __do_softirq+0xf0/0x240
> [ 163.786294] [000000000045f568] run_ksoftirqd+0x28/0x80
> [ 163.786373] [000000000047e3e4] smpboot_thread_fn+0x244/0x280
> [ 163.786440] [0000000000479ef0] kthread+0xb0/0xe0
> [ 163.786496] [0000000000406104] ret_from_fork+0x1c/0x2c
> [ 163.786546] [0000000000000000] (null)
> [ 163.786707] Testing a saved backtrace.
> [ 163.786753] The following trace is a kernel self test and not a bug!
> [ 163.786810] [<00000000004cd8a8>] backtrace_regression_test+0xc8/0x100
> [ 163.786888] [<0000000000426ea4>] do_one_initcall+0xe4/0x1e0
> [ 163.786952] [<0000000000a40b44>] kernel_init_freeable+0x120/0x1d0
> [ 163.787022] [<0000000000865a84>] kernel_init+0x4/0x100
> [ 163.787088] [<0000000000406104>] ret_from_fork+0x1c/0x2c
> [ 163.787153] [< (null)>] (null)
> [ 163.787207] ====[ end of backtrace testing ]====
> [ 163.787332] audit: initializing netlink subsys (disabled)
> [ 163.787886] audit: type=2000 audit(2.050:1): initialized
> [ 163.791649] HugeTLB registered 8 MB page size, pre-allocated 0 pages
> [ 163.797716] msgmni has been set to 3980
> [ 163.803398] io scheduler noop registered
> [ 163.803651] io scheduler cfq registered (default)
> [ 163.803717] start plist test
> [ 163.826582] end plist test
> [ 163.831561] test_string_helpers: Running tests...
> [ 164.044577] zs f005de3c: ttyS0 at MMIO 0x1fff8902000 (irq = 2, base_baud = 307200) is a zs (ESCC)
> [ 164.044724] Console: ttyS0 (SunZilog zs0)
> [ 179.468351] console [ttyS0] enabled
> [ 179.496405] zs f005de3c: ttyS1 at MMIO 0x1fff8902004 (irq = 2, base_baud = 307200) is a zs (ESCC)
> [ 179.795321] f005df14: Keyboard at MMIO 0x1fff8904000 (irq = 2) is a zs
> [ 179.855846] f005df14: Mouse at MMIO 0x1fff8904004 (irq = 2) is a zs
> [ 179.954009] loop: module loaded
> [ 179.975578] PCI: Enabling device: (0003:80:02.0), cmd 3
> [ 185.152853] scsi0: Missing case in ahd_handle_scsiint. status = 0
> [ 185.208135] >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<
> scsi0: Dumping Card State at program address 0x0 Mode 0x33
> [ 185.334228] Card was paused
> [ 185.351888] INTSTAT[0x8]:(SCSIINT) SELOID[0x0] SELID[0x0] HS_MAILBOX[0x0]
> [ 185.418562] INTCTL[0x0] SEQINTSTAT[0x0] SAVED_MODE[0x25] DFFSTAT[0x33]:(CURRFIFO_NONE|FIFO0FREE|FIFO1FREE)
> [ 185.519625] SCSISIGI[0x0]:(P_DATAOUT) SCSIPHASE[0x0] SCSIBUS[0x0]
> [ 185.577970] LASTPHASE[0x1]:(P_DATAOUT|P_BUSFREE) SCSISEQ0[0x0]
> [ 185.633186] SCSISEQ1[0x12]:(ENAUTOATNP|ENRSELI) SEQCTL0[0x0] SEQINTCTL[0x0]
> [ 185.701952] SEQ_FLAGS[0x0] SEQ_FLAGS2[0x0] QFREEZE_COUNT[0x0]
> [ 185.756130] KERNEL_QFREEZE_COUNT[0x0] MK_MESSAGE_SCB[0xff00] MK_MESSAGE_SCSIID[0xff]
> [ 185.834268] SSTAT0[0x0] SSTAT1[0x0] SSTAT2[0x0] SSTAT3[0x0] PERRDIAG[0x0]
> [ 185.900952] SIMODE1[0xa4]:(ENSCSIPERR|ENSCSIRST|ENSELTIMO) LQISTAT0[0x0]
> [ 185.966586] LQISTAT1[0x0] LQISTAT2[0x0] LQOSTAT0[0x0] LQOSTAT1[0x0]
> [ 186.027015] LQOSTAT2[0x0]
> [ 186.043701]
> SCB Count = 8 CMDS_PENDING = 0 LASTSCB 0xffff CURRSCB 0x0 NEXTSCB 0x0
> [ 186.119786] qinstart = 0 qinfifonext = 0
> QINFIFO:
> WAITING_TID_QUEUES:
> [ 186.183326] Pending list:
> Total 0
> [ 186.208314] Kernel Free SCB list: 7 6 5 4 3 2 1 0
> [ 186.249973] Sequencer Complete DMA-inprog list:
> [ 186.289562] Sequencer Complete list:
> [ 186.317694] Sequencer DMA-Up and Complete list:
> [ 186.357284] Sequencer On QFreeze and Complete list:
> [ 186.401059]
>
> scsi0: FIFO0 Free, LONGJMP == 0x803b, SCB 0x0
> [ 186.454230] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
> [ 186.544821] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
> [ 186.622965] SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
> [ 186.689642] SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
> [ 186.766758] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
>
> scsi0: FIFO1 Free, LONGJMP == 0x80bc, SCB 0x0
> [ 186.878272] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
> [ 186.968863] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
> [ 187.047006] SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
> [ 187.113688] SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
> [ 187.190796] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
> LQIN: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
> [ 187.342907] scsi0: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x52
> [ 187.403351] scsi0: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x0
> [ 187.449192] scsi0: SAVED_SCSIID = 0x0 SAVED_LUN = 0x0
>
> [ 187.496052] SIMODE0[0x6c]:(ENOVERRUN|ENIOERR|ENSELDI|ENSELDO)
> [ 187.550231] CCSCBCTL[0x0]
> [ 187.566913] scsi0: REG0 == 0x45d1, SINDEX = 0x0, DINDEX = 0x0
> [ 187.620062] scsi0: SCBPTR == 0x1ff, SCB_NEXT == 0xff00, SCB_NEXT2 == 0x0
> [ 187.684665] CDB ff 1 0 0 0 0
> [ 187.703390] STACK: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
> <<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>
> [ 187.806958] scsi host0: Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 3.0
> <Adaptec 29320ALP PCIx Ultra320 SCSI adapter>
> aic7901: Ultra320 Wide Channel A, SCSI Id=7, PCI 33 or 66MHz, 512 SCBs
> [ 188.016407] qla1280: QLA1040 found on PCI bus 0, dev 3
> [ 188.060231] PCI: Enabling device: (0002:00:03.0), cmd 7
>
> [ 188.275021] ===============================
> [ 188.309351] [ INFO: suspicious RCU usage. ]
> [ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted
> [ 188.394786] -------------------------------
> [ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used illegally while idle!
> [ 188.505235]
> other info that might help us debug this:
>
> [ 188.554230]
> RCU used illegally from idle CPU!
> rcu_scheduler_active = 1, debug_locks = 0
> [ 188.637587] RCU used illegally from extended quiescent state!
> [ 188.690684] 3 locks held by swapper/7/0:
> [ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60
> [ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400
> [ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40
> [ 188.973043]
> stack backtrace:
> [ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> [ 189.076187] Call Trace:
> [ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100
> [ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40
> [ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400
> [ 189.252258] [000000000048554c] default_wake_function+0xc/0x20
> [ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80
> [ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40
> [ 189.406456] [0000000000495e08] complete+0x28/0x60
> [ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20
> [ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60
> [ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180
> [ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600
> [ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0
> [ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140
> [ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20
> [ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0
> [ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40
> [ 190.269728] random: nonblocking pool is initialized
> [ 190.828808] scsi(1:0): Resetting SCSI BUS
> [ 193.862671] scsi host1: QLogic QLA1040 PCI to SCSI Host Adapter
> Firmware version: 7.65.06, Driver version 3.27.1
> [ 193.976290] blk-mq: reduced tag depth to 10240
> [ 194.037930] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 8.07.00.16-k.
> [ 194.118405] PCI: Enabling device: (0001:80:02.0), cmd 3
> [ 194.165280] qla2xxx [0001:80:02.0]-001d: : Found an ISP2200 irq 49 iobase 0x000001dd00002000.
> [ 194.353211] qla2xxx 0001:80:02.0: Direct firmware load for ql2200_fw.bin failed with error -2
> [ 194.437839] qla2xxx 0001:80:02.0: Falling back to user helper
> [ 194.491932] scsi 1:0:2:0: Direct-Access IBM DDYS-T18350M S96H PQ: 0 ANSI: 3
> [ 194.573022] scsi(1:0:2:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> [ 194.823272] scsi 1:0:4:0: Direct-Access IBM DDYS-T18350M S80D PQ: 0 ANSI: 3
> [ 194.903416] scsi(1:0:4:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> [ 195.662569] scsi 1:0:10:0: Direct-Access HP 9.10GB A 80-6331 PQ: 0 ANSI: 2
> [ 195.743713] scsi(1:0:10:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> [ 195.830214] scsi 1:0:11:0: Direct-Access IBM DDRS-34560D DC1B PQ: 0 ANSI: 2
> [ 195.911336] scsi(1:0:11:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> [ 196.006929] scsi 1:0:12:0: Direct-Access HP 4.26GB A 80-0430 0430 PQ: 0 ANSI: 2
> [ 196.087903] scsi(1:0:12:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> [ 196.187208] scsi 1:0:13:0: Direct-Access HP 2.13GB A 80-0430 0430 PQ: 0 ANSI: 2
> [ 196.268525] scsi(1:0:13:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> [ 254.692919] qla2xxx [0001:80:02.0]-0063:2: Failed to load firmware image (ql2200_fw.bin).
> [ 254.773218] qla2xxx [0001:80:02.0]-0083:2: Fimware image unavailable.
> [ 254.834679] qla2xxx [0001:80:02.0]-0084:2: Firmware images can be retrieved from: http://ldriver.qlogic.com/firmware/.
> [ 254.947216] qla2xxx [0001:80:02.0]-00cf:2: Setup chip ****FAILED****.
> [ 255.008657] qla2xxx [0001:80:02.0]-00d6:2: Failed to initialize adapter - Adapter flags 2.
> [ 255.097006] sunhme.c:v3.10 August 26, 2008 David S. Miller (davem@davemloft.net)
> [ 255.170460] eth0: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:b6:ee:e2
> [ 255.235445] sd 1:0:4:0: [sdb] 35843670 512-byte logical blocks: (18.3 GB/17.0 GiB)
> [ 255.237573] eth1: Quattro HME slot 0 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:94
> [ 255.239977] eth2: Quattro HME slot 1 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:95
> [ 255.242388] eth3: Quattro HME slot 2 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:96
> [ 255.244859] eth4: Quattro HME slot 3 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:97
> [ 255.247283] eth5: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:b6:ee:e2
> [ 255.247840] PCI: Enabling device: (0000:00:01.1), cmd 2
> [ 255.250196] eth6: HAPPY MEAL (PCI/CheerIO) 10/100BaseT Ethernet 08:00:20:b6:ee:e2
> [ 255.251312] sd 1:0:2:0: [sda] 35843670 512-byte logical blocks: (18.3 GB/17.0 GiB)
> [ 255.310326] sd 1:0:2:0: [sda] Write Protect is off
> [ 255.310343] sd 1:0:2:0: [sda] Mode Sense: cb 00 00 08
> [ 255.310591] sd 1:0:10:0: [sdc] 17773524 512-byte logical blocks: (9.10 GB/8.47 GiB)
> [ 255.310697] sd 1:0:11:0: [sdd] 8925000 512-byte logical blocks: (4.56 GB/4.25 GiB)
> [ 255.311960] mousedev: PS/2 mouse device common for all mice
> [ 255.315824] rtc-m48t59 rtc-m48t59.0: rtc core: registered m48t59 as rtc0
> [ 255.317082] TCP: cubic registered
> [ 255.317108] NET: Registered protocol family 17
> [ 255.318580] registered taskstats version 1
> [ 255.385635] sd 1:0:12:0: [sde] 8330543 512-byte logical blocks: (4.26 GB/3.97 GiB)
> [ 255.385792] sd 1:0:10:0: [sdc] Write Protect is off
> [ 255.385809] sd 1:0:10:0: [sdc] Mode Sense: 9f 00 10 08
> [ 255.385905] sd 1:0:11:0: [sdd] Write Protect is off
> [ 255.385921] sd 1:0:11:0: [sdd] Mode Sense: b9 00 00 08
> [ 255.460208] rtc-m48t59 rtc-m48t59.0: setting system clock to 2014-11-06 14:44:49 UTC (1415285089)
> [ 255.460593] sd 1:0:2:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> [ 255.460897] sd 1:0:12:0: [sde] Write Protect is off
> [ 255.460913] sd 1:0:12:0: [sde] Mode Sense: 9f 00 10 08
> [ 255.535967] sd 1:0:10:0: [sdc] Write cache: disabled, read cache: enabled, supports DPO and FUA
> [ 255.536140] sd 1:0:13:0: [sdf] 4165272 512-byte logical blocks: (2.13 GB/1.98 GiB)
> [ 255.536319] sd 1:0:11:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> [ 255.611389] sd 1:0:12:0: [sde] Write cache: disabled, read cache: enabled, supports DPO and FUA
> [ 255.611526] sd 1:0:13:0: [sdf] Write Protect is off
> [ 255.611542] sd 1:0:13:0: [sdf] Mode Sense: 9f 00 10 08
> [ 255.724337] sd 1:0:13:0: [sdf] Write cache: disabled, read cache: enabled, supports DPO and FUA
> [ 255.960802] sda: sda1 sda2 sda3 sda4
> [ 256.036886] sdd: unknown partition table
> [ 256.038024] sdc: unknown partition table
> [ 256.161971] sde: unknown partition table
> [ 256.226521] sdf: unknown partition table
> [ 256.287571] sd 1:0:2:0: [sda] Attached SCSI disk
> [ 256.320837] sd 1:0:11:0: [sdd] Attached SCSI disk
> [ 256.321195] sd 1:0:10:0: [sdc] Attached SCSI disk
> [ 256.438589] sd 1:0:12:0: [sde] Attached SCSI disk
> [ 256.484470] sd 1:0:13:0: [sdf] Attached SCSI disk
> [ 257.730003] sd 1:0:4:0: [sdb] Write Protect is off
> [ 257.769724] sd 1:0:4:0: [sdb] Mode Sense: cb 00 00 08
> [ 257.816196] sd 1:0:4:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> [ 257.932380] sdb: unknown partition table
> [ 257.967850] sd 1:0:4:0: [sdb] Attached SCSI disk
> [ 258.009691] EXT4-fs (sda2): mounting ext3 file system using the ext4 subsystem
> [ 258.103029] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
> [ 258.177139] VFS: Mounted root (ext3 filesystem) readonly on device 8:2.
> [ 258.268770] devtmpfs: mounted
> [ 259.504165] stty (523) used greatest stack depth: 5544 bytes left
> [ 261.465793] systemd-udevd[610]: starting version 215
> [ 262.297628] hme f009fba8 eth7: renamed from eth2
> [ 262.430354] systemd-udevd[634]: renamed network interface eth2 to eth7
> [ 262.430471] hme f0099bf4 eth9: renamed from eth1
> [ 262.553566] systemd-udevd[648]: renamed network interface eth1 to eth9
> [ 262.633511] hme f008d070 eth1: renamed from eth0
> [ 262.697674] hwclock (658) used greatest stack depth: 4168 bytes left
> [ 262.773763] hme f00ab960 eth8: renamed from eth4
> [ 262.873209] systemd-udevd[635]: renamed network interface eth0 to eth1
> [ 262.918444] hme 0000:00:01.1 eth0: renamed from eth6
> [ 262.918716] systemd-udevd[640]: renamed network interface eth4 to eth8
> [ 263.053804] systemd-udevd[643]: renamed network interface eth6 to eth0
> [ 263.114350] hme f01673a8 eth2: renamed from eth5
> [ 263.192734] hme f00a5a84 eth10: renamed from eth3
> [ 263.238837] systemd-udevd[641]: renamed network interface eth5 to eth2
> [ 263.355961] systemd-udevd[639]: renamed network interface eth3 to eth10
> [ 267.436399] Adding 787176k swap on /dev/sda4. Priority:-1 extents:1 across:787176k
> [ 267.775195] EXT4-fs (sda2): re-mounted. Opts: (null)
> [ 268.309702] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
> [ 272.239364] EXT4-fs (sda1): mounting ext3 file system using the ext4 subsystem
> [ 272.321644] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
> [ 280.082651] eth0: Link is up using internal transceiver at 100Mb/s, Full Duplex.
> [ 284.153738] basename (1686) used greatest stack depth: 3752 bytes left
>
> --
> Meelis Roos (mroos@linux.ee)
---end quoted text---
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: blk_mq: suspicious RCU usage, rcu_read_lock() used illegally while idle!
2014-11-06 15:46 ` Christoph Hellwig
@ 2014-11-06 17:11 ` Paul E. McKenney
2014-11-07 10:50 ` Meelis Roos
0 siblings, 1 reply; 11+ messages in thread
From: Paul E. McKenney @ 2014-11-06 17:11 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: Meelis Roos, linux-scsi, Jens Axboe
On Thu, Nov 06, 2014 at 07:46:16AM -0800, Christoph Hellwig wrote:
> Without help from Paul I can't even make sense of the message..
It looks to me like the SUN4U architecture is failing to invoke
rcu_irq_enter() on entry to the smp_call_function_single_client()
IPI handler.
And I am not seeing any sign of this in the call sequence in 3.17.
Does the following patch help?
------------------------------------------------------------------------
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index 302c476413d5..971a488264ff 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -822,7 +822,9 @@ void __irq_entry smp_call_function_client(int irq, struct pt_regs *regs)
void __irq_entry smp_call_function_single_client(int irq, struct pt_regs *regs)
{
clear_softint(1 << irq);
+ irq_enter();
generic_smp_call_function_single_interrupt();
+ irq_exit();
}
static void tsb_sync(void *info)
------------------------------------------------------------------------
If there is something bad about invoking all of irq_enter() and irq_exit()
for this handler on SPARC, perhaps this would be better:
------------------------------------------------------------------------
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index 302c476413d5..ce3e329c3ccc 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -822,7 +822,9 @@ void __irq_entry smp_call_function_client(int irq, struct pt_regs *regs)
void __irq_entry smp_call_function_single_client(int irq, struct pt_regs *regs)
{
clear_softint(1 << irq);
+ rcu_irq_enter();
generic_smp_call_function_single_interrupt();
+ rcu_irq_exit();
}
static void tsb_sync(void *info)
------------------------------------------------------------------------
Do either of these help?
Thanx, Paul
> On Thu, Nov 06, 2014 at 05:45:43PM +0200, Meelis Roos wrote:
> > I tested a machine with multiple scsi adapters today with latest kernel
> > and found the following warning in the logs. It is probably from QLA1040
> > adapter initialization, full dmesg is below. Adaptec SCSI card dumps is
> > normal on this server, it is usually there and seems to be harmless
> > (maybe a supurious IRQ somewhere - but this should not be relevant).
> >
> > The message is not there for scsi_mod.use_blk_mq=0 boot.
> >
> > Booting 3.17.0 with scsi_mod.use_blk_mq=1 does not show this message
> > either.
> >
> > [ 188.275021] ===============================
> > [ 188.309351] [ INFO: suspicious RCU usage. ]
> > [ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted
> > [ 188.394786] -------------------------------
> > [ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used
> > illegally while idle!
> > [ 188.505235]
> > other info that might help us debug this:
> >
> > [ 188.554230]
> > RCU used illegally from idle CPU!
> > rcu_scheduler_active = 1, debug_locks = 0
> > [ 188.637587] RCU used illegally from extended quiescent state!
> > [ 188.690684] 3 locks held by swapper/7/0:
> > [ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60
> > [ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400
> > [ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40
> > [ 188.973043]stack backtrace:
> > [ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > [ 189.076187] Call Trace:
> > [ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100
> > [ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40
> > [ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400
> > [ 189.252258] [000000000048554c] default_wake_function+0xc/0x20
> > [ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80
> > [ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40
> > [ 189.406456] [0000000000495e08] complete+0x28/0x60
> > [ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20
> > [ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60
> > [ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180
> > [ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600
> > [ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0
> > [ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140
> > [ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20
> > [ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0
> > [ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40
> >
> >
> > Full dmesg:
> >
> > [ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 3.2.30 2002/10/25 14:03'
> > [ 0.000000] PROMLIB: Root node compatible:
> > [ 0.000000] Linux version 3.18.0-rc3-00068-g20f3963-dirty (mroos@korvits) (gcc version 4.9.1 (Debian 4.9.1-18) ) #54 SMP Thu Nov 6 14:37:34 EET 2014
> > [ 0.000000] debug: ignoring loglevel setting.
> > [ 0.000000] bootconsole [earlyprom0] enabled
> > [ 0.000000] ARCH: SUN4U
> > [ 0.000000] Ethernet address: 08:00:20:b6:ee:e2
> > [ 0.000000] MM: PAGE_OFFSET is 0xfffff80000000000 (max_phys_bits == 40)
> > [ 0.000000] MM: VMALLOC [0x0000000100000000 --> 0x0000060000000000]
> > [ 0.000000] MM: VMEMMAP [0x0000060000000000 --> 0x00000c0000000000]
> > [ 0.000000] Kernel: Using 6 locked TLB entries for main kernel image.
> > [ 0.000000] Remapping the kernel... done.
> > [ 0.000000] kmemleak: Kernel memory leak detector disabled
> > [ 0.000000] OF stdout device is: /central@1f,0/fhc@0,f8800000/zs@0,902000:a
> > [ 0.000000] PROM: Built device tree with 169763 bytes of memory.
> > [ 0.000000] Top of RAM: 0x7fcf2000, Total RAM: 0x7f8c0000
> > [ 0.000000] Memory hole size: 4MB
> > [ 0.000000] Allocated 2113536 bytes for kernel page tables.
> > [ 0.000000] Zone ranges:
> > [ 0.000000] Normal [mem 0x00000000-0x7fcf1fff]
> > [ 0.000000] Movable zone start for each node
> > [ 0.000000] Early memory node ranges
> > [ 0.000000] node 0: [mem 0x00000000-0x7f7ddfff]
> > [ 0.000000] node 0: [mem 0x7fc00000-0x7fcd1fff]
> > [ 0.000000] node 0: [mem 0x7fce2000-0x7fcf1fff]
> > [ 0.000000] Initmem setup node 0 [mem 0x00000000-0x7fcf1fff]
> > [ 0.000000] On node 0 totalpages: 261216
> > [ 0.000000] Normal zone: 2301 pages used for memmap
> > [ 0.000000] Normal zone: 0 pages reserved
> > [ 0.000000] Normal zone: 261216 pages, LIFO batch:15
> > [ 0.000000] Booting Linux...
> > [ 0.000000] CPU CAPS: [flush,stbar,swap,muldiv,v9,mul32,div32,v8plus]
> > [ 0.000000] CPU CAPS: [vis]
> > [ 0.000000] PERCPU: Embedded 7 pages/cpu @fffff8007f000000 s15808 r8192 d33344 u2097152
> > [ 0.000000] pcpu-alloc: s15808 r8192 d33344 u2097152 alloc=1*4194304
> > [ 0.000000] pcpu-alloc: [0] 6 7
> > [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 258915
> > [ 0.000000] Kernel command line: root=/dev/sda2 ro debug ignore_loglevel
> > [ 0.000000] PID hash table entries: 4096 (order: 2, 32768 bytes)
> > [ 0.000000] Dentry cache hash table entries: 262144 (order: 8, 2097152 bytes)
> > [ 0.000000] Inode-cache hash table entries: 131072 (order: 7, 1048576 bytes)
> > [ 0.000000] Sorting __ex_table...
> > [ 0.000000] Memory: 2037784K/2089728K available (4533K kernel code, 305K rwdata, 1504K rodata, 576K init, 14539K bss, 51944K reserved)
> > [ 0.000000] Hierarchical RCU implementation.
> > [ 0.000000] RCU lockdep checking is enabled.
> > [ 0.000000] RCU restricting CPUs from NR_CPUS=16 to nr_cpu_ids=8.
> > [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=8
> > [ 0.000000] NR_IRQS:2048 nr_irqs:2048 1
> > [ 161.238391] clocksource: mult[2800000] shift[24]
> > [ 161.277473] clockevent: mult[66666666] shift[32]
> > [ 161.318721] Console: colour dummy device 80x25
> > [ 161.355382] console [tty0] enabled
> > [ 161.380218] bootconsole [earlyprom0] disabled
> > [ 161.416696] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
> > [ 161.416740] ... MAX_LOCKDEP_SUBCLASSES: 8
> > [ 161.416765] ... MAX_LOCK_DEPTH: 48
> > [ 161.416790] ... MAX_LOCKDEP_KEYS: 8191
> > [ 161.416816] ... CLASSHASH_SIZE: 4096
> > [ 161.416841] ... MAX_LOCKDEP_ENTRIES: 32768
> > [ 161.416867] ... MAX_LOCKDEP_CHAINS: 65536
> > [ 161.416892] ... CHAINHASH_SIZE: 32768
> > [ 161.416918] memory used by lock dependency info: 8159 kB
> > [ 161.416949] per task-struct memory footprint: 1920 bytes
> > [ 161.416978] ------------------------
> > [ 161.416999] | Locking API testsuite:
> > [ 161.417019] ----------------------------------------------------------------------------
> > [ 161.417061] | spin |wlock |rlock |mutex | wsem | rsem |
> > [ 161.417104] --------------------------------------------------------------------------
> > [ 161.417173] A-A deadlock: ok | ok | ok | ok | ok | ok |
> > [ 161.457494] A-B-B-A deadlock: ok | ok | ok | ok | ok | ok |
> > [ 161.495480] A-B-B-C-C-A deadlock: ok | ok | ok | ok | ok | ok |
> > [ 161.533653] A-B-C-A-B-C deadlock: ok | ok | ok | ok | ok | ok |
> > [ 161.571829] A-B-B-C-C-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > [ 161.610241] A-B-C-D-B-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > [ 161.648630] A-B-C-D-B-C-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > [ 161.687043] double unlock: ok | ok | ok | ok | ok | ok |
> > [ 161.724876] initialize held: ok | ok | ok | ok | ok | ok |
> > [ 161.762661] bad unlock order: ok | ok | ok | ok | ok | ok |
> > [ 161.800701] --------------------------------------------------------------------------
> > [ 161.800747] recursive read-lock: | ok | | ok |
> > [ 161.813409] recursive read-lock #2: | ok | | ok |
> > [ 161.826070] mixed read-write-lock: | ok | | ok |
> > [ 161.838756] mixed write-read-lock: | ok | | ok |
> > [ 161.851441] --------------------------------------------------------------------------
> > [ 161.851489] hard-irqs-on + irq-safe-A/12: ok | ok | ok |
> > [ 161.870404] soft-irqs-on + irq-safe-A/12: ok | ok | ok |
> > [ 161.889387] hard-irqs-on + irq-safe-A/21: ok | ok | ok |
> > [ 161.908303] soft-irqs-on + irq-safe-A/21: ok | ok | ok |
> > [ 161.927281] sirq-safe-A => hirqs-on/12: ok | ok | ok |
> > [ 161.946218] sirq-safe-A => hirqs-on/21: ok | ok | ok |
> > [ 161.965194] hard-safe-A + irqs-on/12: ok | ok | ok |
> > [ 161.984110] soft-safe-A + irqs-on/12: ok | ok | ok |
> > [ 162.003086] hard-safe-A + irqs-on/21: ok | ok | ok |
> > [ 162.022023] soft-safe-A + irqs-on/21: ok | ok | ok |
> > [ 162.041005] hard-safe-A + unsafe-B #1/123: ok | ok | ok |
> > [ 162.060021] soft-safe-A + unsafe-B #1/123: ok | ok | ok |
> > [ 162.079090] hard-safe-A + unsafe-B #1/132: ok | ok | ok |
> > [ 162.098089] soft-safe-A + unsafe-B #1/132: ok | ok | ok |
> > [ 162.117160] hard-safe-A + unsafe-B #1/213: ok | ok | ok |
> > [ 162.136184] soft-safe-A + unsafe-B #1/213: ok | ok | ok |
> > [ 162.155258] hard-safe-A + unsafe-B #1/231: ok | ok | ok |
> > [ 162.174253] soft-safe-A + unsafe-B #1/231: ok | ok | ok |
> > [ 162.193316] hard-safe-A + unsafe-B #1/312: ok | ok | ok |
> > [ 162.212268] soft-safe-A + unsafe-B #1/312: ok | ok | ok |
> > [ 162.231264] hard-safe-A + unsafe-B #1/321: ok | ok | ok |
> > [ 162.250265] soft-safe-A + unsafe-B #1/321: ok | ok | ok |
> > [ 162.269312] hard-safe-A + unsafe-B #2/123: ok | ok | ok |
> > [ 162.288321] soft-safe-A + unsafe-B #2/123: ok | ok | ok |
> > [ 162.307393] hard-safe-A + unsafe-B #2/132: ok | ok | ok |
> > [ 162.326395] soft-safe-A + unsafe-B #2/132: ok | ok | ok |
> > [ 162.345469] hard-safe-A + unsafe-B #2/213: ok | ok | ok |
> > [ 162.364485] soft-safe-A + unsafe-B #2/213: ok | ok | ok |
> > [ 162.383569] hard-safe-A + unsafe-B #2/231: ok | ok | ok |
> > [ 162.402578] soft-safe-A + unsafe-B #2/231: ok | ok | ok |
> > [ 162.421652] hard-safe-A + unsafe-B #2/312: ok | ok | ok |
> > [ 162.440662] soft-safe-A + unsafe-B #2/312: ok | ok | ok |
> > [ 162.459750] hard-safe-A + unsafe-B #2/321: ok | ok | ok |
> > [ 162.478756] soft-safe-A + unsafe-B #2/321: ok | ok | ok |
> > [ 162.497822] hard-irq lock-inversion/123: ok | ok | ok |
> > [ 162.516832] soft-irq lock-inversion/123: ok | ok | ok |
> > [ 162.535924] hard-irq lock-inversion/132: ok | ok | ok |
> > [ 162.554942] soft-irq lock-inversion/132: ok | ok | ok |
> > [ 162.574036] hard-irq lock-inversion/213: ok | ok | ok |
> > [ 162.593071] soft-irq lock-inversion/213: ok | ok | ok |
> > [ 162.612151] hard-irq lock-inversion/231: ok | ok | ok |
> > [ 162.631163] soft-irq lock-inversion/231: ok | ok | ok |
> > [ 162.650245] hard-irq lock-inversion/312: ok | ok | ok |
> > [ 162.669272] soft-irq lock-inversion/312: ok | ok | ok |
> > [ 162.688368] hard-irq lock-inversion/321: ok | ok | ok |
> > [ 162.707370] soft-irq lock-inversion/321: ok | ok | ok |
> > [ 162.726457] hard-irq read-recursion/123: ok |
> > [ 162.732811] soft-irq read-recursion/123: ok |
> > [ 162.739223] hard-irq read-recursion/132: ok |
> > [ 162.745568] soft-irq read-recursion/132: ok |
> > [ 162.751969] hard-irq read-recursion/213: ok |
> > [ 162.758313] soft-irq read-recursion/213: ok |
> > [ 162.764715] hard-irq read-recursion/231: ok |
> > [ 162.771062] soft-irq read-recursion/231: ok |
> > [ 162.777472] hard-irq read-recursion/312: ok |
> > [ 162.783817] soft-irq read-recursion/312: ok |
> > [ 162.790220] hard-irq read-recursion/321: ok |
> > [ 162.796571] soft-irq read-recursion/321: ok |
> > [ 162.802972] --------------------------------------------------------------------------
> > [ 162.803016] | Wound/wait tests |
> > [ 162.803039] ---------------------
> > [ 162.803064] ww api failures: ok | ok | ok |
> > [ 162.822112] ww contexts mixing: ok | ok |
> > [ 162.834785] finishing ww context: ok | ok | ok | ok |
> > [ 162.860095] locking mismatches: ok | ok | ok |
> > [ 162.879128] EDEADLK handling: ok | ok | ok | ok | ok | ok | ok | ok | ok | ok |
> > [ 162.942686] spinlock nest unlocked: ok |
> > [ 162.949005] -----------------------------------------------------
> > [ 162.949044] |block | try |context|
> > [ 162.949082] -----------------------------------------------------
> > [ 162.949121] context: ok | ok | ok |
> > [ 162.968211] try: ok | ok | ok |
> > [ 162.987181] block: ok | ok | ok |
> > [ 163.006186] spinlock: ok | ok | ok |
> > [ 163.025283] -------------------------------------------------------
> > [ 163.025322] Good, all 253 testcases passed! |
> > [ 163.025349] ---------------------------------
> > [ 163.027126] ODEBUG: selftest passed
> > [ 163.027345] kmemleak: Early log buffer exceeded (3329), please increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE
> > [ 163.169263] Calibrating delay using timer specific routine.. 804.17 BogoMIPS (lpj=4020880)
> > [ 163.169341] pid_max: default: 32768 minimum: 301
> > [ 163.170354] Mount-cache hash table entries: 4096 (order: 2, 32768 bytes)
> > [ 163.170426] Mountpoint-cache hash table entries: 4096 (order: 2, 32768 bytes)
> > [ 163.191280] CPU 7: synchronized TICK with master CPU (last diff -8 cycles, maxerr 677 cycles)
> > [ 163.191904] Brought up 2 CPUs
> > [ 163.196096] devtmpfs: initialized
> > [ 163.199102] Performance events: No support for PMU type 'ultra12'
> > [ 163.282260] atomic64_test: passed
> > [ 163.284207] kworker/u4:0 (20) used greatest stack depth: 8216 bytes left
> > [ 163.300285] device-tree: Duplicate name in base, renamed to "fhc#1"
> > [ 163.307412] device-tree: Duplicate name in base, renamed to "counter-timer#1"
> > [ 163.312131] device-tree: Duplicate name in base, renamed to "fhc#2"
> > [ 163.314228] device-tree: Duplicate name in base, renamed to "counter-timer#2"
> > [ 163.318010] device-tree: Duplicate name in base, renamed to "counter-timer#3"
> > [ 163.323548] device-tree: Duplicate name in base, renamed to "fhc#3"
> > [ 163.325699] device-tree: Duplicate name in base, renamed to "counter-timer#4"
> > [ 163.330745] device-tree: Duplicate name in base, renamed to "counter-timer#5"
> > [ 163.333752] NET: Registered protocol family 16
> > [ 163.344321] kworker/u4:0 (31) used greatest stack depth: 7976 bytes left
> > [ 163.347152] kworker/u4:0 (34) used greatest stack depth: 7896 bytes left
> > [ 163.390763] SYSIO: UPA portID ffffffff, at 000001c400000000
> > [ 163.400388] SYSIO: UPA portID ffffffff, at 000001c600000000
> > [ 163.410018] SYSIO: UPA portID ffffffff, at 000001d400000000
> > [ 163.420198] SYSIO: UPA portID ffffffff, at 000001d600000000
> > [ 163.439052] /pci@e,4000: PCI IO[1dc02010000] MEM[1dd80000000]
> > [ 163.439288] /pci@e,4000: PSYCHO PCI Bus Module ver[4:0]
> > [ 163.439377] PCI: Scanning PBM /pci@e,4000
> > [ 163.440634] psycho f01bf7bc: PCI host bridge to bus 0000:00
> > [ 163.440713] pci_bus 0000:00: root bus resource [io 0x1dc02010000-0x1dc0201ffff] (bus address [0x0000-0xffff])
> > [ 163.440818] pci_bus 0000:00: root bus resource [mem 0x1dd80000000-0x1ddffffffff] (bus address [0x00000000-0x7fffffff])
> > [ 163.440929] pci_bus 0000:00: root bus resource [bus 00]
> > [ 163.445838] /pci@e,2000: PCI IO[1dc02000000] MEM[1dd00000000]
> > [ 163.445927] /pci@e,2000: PSYCHO PCI Bus Module ver[4:0]
> > [ 163.445984] PCI: Scanning PBM /pci@e,2000
> > [ 163.446800] psycho f01c88e0: PCI host bridge to bus 0001:80
> > [ 163.446876] pci_bus 0001:80: root bus resource [io 0x1dc02000000-0x1dc0200ffff] (bus address [0x0000-0xffff])
> > [ 163.446983] pci_bus 0001:80: root bus resource [mem 0x1dd00000000-0x1dd7fffffff] (bus address [0x00000000-0x7fffffff])
> > [ 163.447088] pci_bus 0001:80: root bus resource [bus 80]
> > [ 163.457405] /pci@f,4000: PCI IO[1de02010000] MEM[1df80000000]
> > [ 163.457494] /pci@f,4000: PSYCHO PCI Bus Module ver[4:0]
> > [ 163.457549] PCI: Scanning PBM /pci@f,4000
> > [ 163.458367] psycho f01ca118: PCI host bridge to bus 0002:00
> > [ 163.458443] pci_bus 0002:00: root bus resource [io 0x1de02010000-0x1de0201ffff] (bus address [0x0000-0xffff])
> > [ 163.458547] pci_bus 0002:00: root bus resource [mem 0x1df80000000-0x1dfffffffff] (bus address [0x00000000-0x7fffffff])
> > [ 163.458653] pci_bus 0002:00: root bus resource [bus 00]
> > [ 163.461719] /pci@f,2000: PCI IO[1de02000000] MEM[1df00000000]
> > [ 163.461804] /pci@f,2000: PSYCHO PCI Bus Module ver[4:0]
> > [ 163.461859] PCI: Scanning PBM /pci@f,2000
> > [ 163.462668] psycho f01d320c: PCI host bridge to bus 0003:80
> > [ 163.462743] pci_bus 0003:80: root bus resource [io 0x1de02000000-0x1de0200ffff] (bus address [0x0000-0xffff])
> > [ 163.462855] pci_bus 0003:80: root bus resource [mem 0x1df00000000-0x1df7fffffff] (bus address [0x00000000-0x7fffffff])
> > [ 163.462964] pci_bus 0003:80: root bus resource [bus 80]
> > [ 163.580345] vgaarb: loaded
> > [ 163.584298] SCSI subsystem initialized
> > [ 163.592449] /central/fhc@0,f8800000/eeprom@0,908000: Mostek regs at 0x1fff8908000
> > [ 163.595898] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e] (Central)
> > [ 163.596622] fhc: Board #3, Version[1] PartID[fa0] Manuf[3e] (JTAG Master)
> > [ 163.597384] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e]
> > [ 163.598197] fhc: Board #5, Version[1] PartID[fa0] Manuf[3e]
> > [ 163.598978] fhc: Board #7, Version[1] PartID[fa0] Manuf[3e]
> > [ 163.600178] clock_board: Detected 5 slot Enterprise system.
> > [ 163.690823] DMA-API: preallocated 32768 debug entries
> > [ 163.690902] DMA-API: debugging enabled by kernel config
> > [ 163.693159] Switched to clocksource tick
> > [ 163.703829] kworker/u4:0 (280) used greatest stack depth: 7752 bytes left
> > [ 163.754938] NET: Registered protocol family 2
> > [ 163.757716] TCP established hash table entries: 16384 (order: 4, 131072 bytes)
> > [ 163.758687] TCP bind hash table entries: 16384 (order: 7, 1048576 bytes)
> > [ 163.768861] TCP: Hash tables configured (established 16384 bind 16384)
> > [ 163.769822] TCP: reno registered
> > [ 163.769975] UDP hash table entries: 1024 (order: 4, 163840 bytes)
> > [ 163.771566] UDP-Lite hash table entries: 1024 (order: 4, 163840 bytes)
> > [ 163.775400] NET: Registered protocol family 1
> > [ 163.775741] PCI: CLS 0 bytes, default 64
> > [ 163.784319] futex hash table entries: 512 (order: 3, 65536 bytes)
> > [ 163.784865] ====[ backtrace testing ]===========
> > [ 163.784908] Testing a backtrace from process context.
> > [ 163.784952] The following trace is a kernel self test and not a bug!
> > [ 163.785015] CPU: 6 PID: 1 Comm: swapper/6 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > [ 163.785076] Call Trace:
> > [ 163.785122] [00000000004cd80c] backtrace_regression_test+0x2c/0x100
> > [ 163.785183] [0000000000426ea4] do_one_initcall+0xe4/0x1e0
> > [ 163.785250] [0000000000a40b44] kernel_init_freeable+0x120/0x1d0
> > [ 163.785326] [0000000000865a84] kernel_init+0x4/0x100
> > [ 163.785389] [0000000000406104] ret_from_fork+0x1c/0x2c
> > [ 163.785436] [0000000000000000] (null)
> > [ 163.785477] Testing a backtrace from irq context.
> > [ 163.785519] The following trace is a kernel self test and not a bug!
> > [ 163.786004] CPU: 6 PID: 3 Comm: ksoftirqd/6 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > [ 163.786068] Call Trace:
> > [ 163.786116] [00000000004cd7c4] backtrace_test_irq_callback+0x4/0x20
> > [ 163.786183] [000000000045f278] tasklet_action+0x98/0x120
> > [ 163.786238] [000000000045f3f0] __do_softirq+0xf0/0x240
> > [ 163.786294] [000000000045f568] run_ksoftirqd+0x28/0x80
> > [ 163.786373] [000000000047e3e4] smpboot_thread_fn+0x244/0x280
> > [ 163.786440] [0000000000479ef0] kthread+0xb0/0xe0
> > [ 163.786496] [0000000000406104] ret_from_fork+0x1c/0x2c
> > [ 163.786546] [0000000000000000] (null)
> > [ 163.786707] Testing a saved backtrace.
> > [ 163.786753] The following trace is a kernel self test and not a bug!
> > [ 163.786810] [<00000000004cd8a8>] backtrace_regression_test+0xc8/0x100
> > [ 163.786888] [<0000000000426ea4>] do_one_initcall+0xe4/0x1e0
> > [ 163.786952] [<0000000000a40b44>] kernel_init_freeable+0x120/0x1d0
> > [ 163.787022] [<0000000000865a84>] kernel_init+0x4/0x100
> > [ 163.787088] [<0000000000406104>] ret_from_fork+0x1c/0x2c
> > [ 163.787153] [< (null)>] (null)
> > [ 163.787207] ====[ end of backtrace testing ]====
> > [ 163.787332] audit: initializing netlink subsys (disabled)
> > [ 163.787886] audit: type=2000 audit(2.050:1): initialized
> > [ 163.791649] HugeTLB registered 8 MB page size, pre-allocated 0 pages
> > [ 163.797716] msgmni has been set to 3980
> > [ 163.803398] io scheduler noop registered
> > [ 163.803651] io scheduler cfq registered (default)
> > [ 163.803717] start plist test
> > [ 163.826582] end plist test
> > [ 163.831561] test_string_helpers: Running tests...
> > [ 164.044577] zs f005de3c: ttyS0 at MMIO 0x1fff8902000 (irq = 2, base_baud = 307200) is a zs (ESCC)
> > [ 164.044724] Console: ttyS0 (SunZilog zs0)
> > [ 179.468351] console [ttyS0] enabled
> > [ 179.496405] zs f005de3c: ttyS1 at MMIO 0x1fff8902004 (irq = 2, base_baud = 307200) is a zs (ESCC)
> > [ 179.795321] f005df14: Keyboard at MMIO 0x1fff8904000 (irq = 2) is a zs
> > [ 179.855846] f005df14: Mouse at MMIO 0x1fff8904004 (irq = 2) is a zs
> > [ 179.954009] loop: module loaded
> > [ 179.975578] PCI: Enabling device: (0003:80:02.0), cmd 3
> > [ 185.152853] scsi0: Missing case in ahd_handle_scsiint. status = 0
> > [ 185.208135] >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<
> > scsi0: Dumping Card State at program address 0x0 Mode 0x33
> > [ 185.334228] Card was paused
> > [ 185.351888] INTSTAT[0x8]:(SCSIINT) SELOID[0x0] SELID[0x0] HS_MAILBOX[0x0]
> > [ 185.418562] INTCTL[0x0] SEQINTSTAT[0x0] SAVED_MODE[0x25] DFFSTAT[0x33]:(CURRFIFO_NONE|FIFO0FREE|FIFO1FREE)
> > [ 185.519625] SCSISIGI[0x0]:(P_DATAOUT) SCSIPHASE[0x0] SCSIBUS[0x0]
> > [ 185.577970] LASTPHASE[0x1]:(P_DATAOUT|P_BUSFREE) SCSISEQ0[0x0]
> > [ 185.633186] SCSISEQ1[0x12]:(ENAUTOATNP|ENRSELI) SEQCTL0[0x0] SEQINTCTL[0x0]
> > [ 185.701952] SEQ_FLAGS[0x0] SEQ_FLAGS2[0x0] QFREEZE_COUNT[0x0]
> > [ 185.756130] KERNEL_QFREEZE_COUNT[0x0] MK_MESSAGE_SCB[0xff00] MK_MESSAGE_SCSIID[0xff]
> > [ 185.834268] SSTAT0[0x0] SSTAT1[0x0] SSTAT2[0x0] SSTAT3[0x0] PERRDIAG[0x0]
> > [ 185.900952] SIMODE1[0xa4]:(ENSCSIPERR|ENSCSIRST|ENSELTIMO) LQISTAT0[0x0]
> > [ 185.966586] LQISTAT1[0x0] LQISTAT2[0x0] LQOSTAT0[0x0] LQOSTAT1[0x0]
> > [ 186.027015] LQOSTAT2[0x0]
> > [ 186.043701]
> > SCB Count = 8 CMDS_PENDING = 0 LASTSCB 0xffff CURRSCB 0x0 NEXTSCB 0x0
> > [ 186.119786] qinstart = 0 qinfifonext = 0
> > QINFIFO:
> > WAITING_TID_QUEUES:
> > [ 186.183326] Pending list:
> > Total 0
> > [ 186.208314] Kernel Free SCB list: 7 6 5 4 3 2 1 0
> > [ 186.249973] Sequencer Complete DMA-inprog list:
> > [ 186.289562] Sequencer Complete list:
> > [ 186.317694] Sequencer DMA-Up and Complete list:
> > [ 186.357284] Sequencer On QFreeze and Complete list:
> > [ 186.401059]
> >
> > scsi0: FIFO0 Free, LONGJMP == 0x803b, SCB 0x0
> > [ 186.454230] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
> > [ 186.544821] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
> > [ 186.622965] SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
> > [ 186.689642] SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
> > [ 186.766758] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
> >
> > scsi0: FIFO1 Free, LONGJMP == 0x80bc, SCB 0x0
> > [ 186.878272] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
> > [ 186.968863] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
> > [ 187.047006] SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
> > [ 187.113688] SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
> > [ 187.190796] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
> > LQIN: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
> > [ 187.342907] scsi0: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x52
> > [ 187.403351] scsi0: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x0
> > [ 187.449192] scsi0: SAVED_SCSIID = 0x0 SAVED_LUN = 0x0
> >
> > [ 187.496052] SIMODE0[0x6c]:(ENOVERRUN|ENIOERR|ENSELDI|ENSELDO)
> > [ 187.550231] CCSCBCTL[0x0]
> > [ 187.566913] scsi0: REG0 == 0x45d1, SINDEX = 0x0, DINDEX = 0x0
> > [ 187.620062] scsi0: SCBPTR == 0x1ff, SCB_NEXT == 0xff00, SCB_NEXT2 == 0x0
> > [ 187.684665] CDB ff 1 0 0 0 0
> > [ 187.703390] STACK: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
> > <<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>
> > [ 187.806958] scsi host0: Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 3.0
> > <Adaptec 29320ALP PCIx Ultra320 SCSI adapter>
> > aic7901: Ultra320 Wide Channel A, SCSI Id=7, PCI 33 or 66MHz, 512 SCBs
> > [ 188.016407] qla1280: QLA1040 found on PCI bus 0, dev 3
> > [ 188.060231] PCI: Enabling device: (0002:00:03.0), cmd 7
> >
> > [ 188.275021] ===============================
> > [ 188.309351] [ INFO: suspicious RCU usage. ]
> > [ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted
> > [ 188.394786] -------------------------------
> > [ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used illegally while idle!
> > [ 188.505235]
> > other info that might help us debug this:
> >
> > [ 188.554230]
> > RCU used illegally from idle CPU!
> > rcu_scheduler_active = 1, debug_locks = 0
> > [ 188.637587] RCU used illegally from extended quiescent state!
> > [ 188.690684] 3 locks held by swapper/7/0:
> > [ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60
> > [ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400
> > [ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40
> > [ 188.973043]
> > stack backtrace:
> > [ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > [ 189.076187] Call Trace:
> > [ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100
> > [ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40
> > [ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400
> > [ 189.252258] [000000000048554c] default_wake_function+0xc/0x20
> > [ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80
> > [ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40
> > [ 189.406456] [0000000000495e08] complete+0x28/0x60
> > [ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20
> > [ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60
> > [ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180
> > [ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600
> > [ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0
> > [ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140
> > [ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20
> > [ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0
> > [ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40
> > [ 190.269728] random: nonblocking pool is initialized
> > [ 190.828808] scsi(1:0): Resetting SCSI BUS
> > [ 193.862671] scsi host1: QLogic QLA1040 PCI to SCSI Host Adapter
> > Firmware version: 7.65.06, Driver version 3.27.1
> > [ 193.976290] blk-mq: reduced tag depth to 10240
> > [ 194.037930] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 8.07.00.16-k.
> > [ 194.118405] PCI: Enabling device: (0001:80:02.0), cmd 3
> > [ 194.165280] qla2xxx [0001:80:02.0]-001d: : Found an ISP2200 irq 49 iobase 0x000001dd00002000.
> > [ 194.353211] qla2xxx 0001:80:02.0: Direct firmware load for ql2200_fw.bin failed with error -2
> > [ 194.437839] qla2xxx 0001:80:02.0: Falling back to user helper
> > [ 194.491932] scsi 1:0:2:0: Direct-Access IBM DDYS-T18350M S96H PQ: 0 ANSI: 3
> > [ 194.573022] scsi(1:0:2:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > [ 194.823272] scsi 1:0:4:0: Direct-Access IBM DDYS-T18350M S80D PQ: 0 ANSI: 3
> > [ 194.903416] scsi(1:0:4:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > [ 195.662569] scsi 1:0:10:0: Direct-Access HP 9.10GB A 80-6331 PQ: 0 ANSI: 2
> > [ 195.743713] scsi(1:0:10:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > [ 195.830214] scsi 1:0:11:0: Direct-Access IBM DDRS-34560D DC1B PQ: 0 ANSI: 2
> > [ 195.911336] scsi(1:0:11:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > [ 196.006929] scsi 1:0:12:0: Direct-Access HP 4.26GB A 80-0430 0430 PQ: 0 ANSI: 2
> > [ 196.087903] scsi(1:0:12:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > [ 196.187208] scsi 1:0:13:0: Direct-Access HP 2.13GB A 80-0430 0430 PQ: 0 ANSI: 2
> > [ 196.268525] scsi(1:0:13:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > [ 254.692919] qla2xxx [0001:80:02.0]-0063:2: Failed to load firmware image (ql2200_fw.bin).
> > [ 254.773218] qla2xxx [0001:80:02.0]-0083:2: Fimware image unavailable.
> > [ 254.834679] qla2xxx [0001:80:02.0]-0084:2: Firmware images can be retrieved from: http://ldriver.qlogic.com/firmware/.
> > [ 254.947216] qla2xxx [0001:80:02.0]-00cf:2: Setup chip ****FAILED****.
> > [ 255.008657] qla2xxx [0001:80:02.0]-00d6:2: Failed to initialize adapter - Adapter flags 2.
> > [ 255.097006] sunhme.c:v3.10 August 26, 2008 David S. Miller (davem@davemloft.net)
> > [ 255.170460] eth0: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:b6:ee:e2
> > [ 255.235445] sd 1:0:4:0: [sdb] 35843670 512-byte logical blocks: (18.3 GB/17.0 GiB)
> > [ 255.237573] eth1: Quattro HME slot 0 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:94
> > [ 255.239977] eth2: Quattro HME slot 1 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:95
> > [ 255.242388] eth3: Quattro HME slot 2 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:96
> > [ 255.244859] eth4: Quattro HME slot 3 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:97
> > [ 255.247283] eth5: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:b6:ee:e2
> > [ 255.247840] PCI: Enabling device: (0000:00:01.1), cmd 2
> > [ 255.250196] eth6: HAPPY MEAL (PCI/CheerIO) 10/100BaseT Ethernet 08:00:20:b6:ee:e2
> > [ 255.251312] sd 1:0:2:0: [sda] 35843670 512-byte logical blocks: (18.3 GB/17.0 GiB)
> > [ 255.310326] sd 1:0:2:0: [sda] Write Protect is off
> > [ 255.310343] sd 1:0:2:0: [sda] Mode Sense: cb 00 00 08
> > [ 255.310591] sd 1:0:10:0: [sdc] 17773524 512-byte logical blocks: (9.10 GB/8.47 GiB)
> > [ 255.310697] sd 1:0:11:0: [sdd] 8925000 512-byte logical blocks: (4.56 GB/4.25 GiB)
> > [ 255.311960] mousedev: PS/2 mouse device common for all mice
> > [ 255.315824] rtc-m48t59 rtc-m48t59.0: rtc core: registered m48t59 as rtc0
> > [ 255.317082] TCP: cubic registered
> > [ 255.317108] NET: Registered protocol family 17
> > [ 255.318580] registered taskstats version 1
> > [ 255.385635] sd 1:0:12:0: [sde] 8330543 512-byte logical blocks: (4.26 GB/3.97 GiB)
> > [ 255.385792] sd 1:0:10:0: [sdc] Write Protect is off
> > [ 255.385809] sd 1:0:10:0: [sdc] Mode Sense: 9f 00 10 08
> > [ 255.385905] sd 1:0:11:0: [sdd] Write Protect is off
> > [ 255.385921] sd 1:0:11:0: [sdd] Mode Sense: b9 00 00 08
> > [ 255.460208] rtc-m48t59 rtc-m48t59.0: setting system clock to 2014-11-06 14:44:49 UTC (1415285089)
> > [ 255.460593] sd 1:0:2:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > [ 255.460897] sd 1:0:12:0: [sde] Write Protect is off
> > [ 255.460913] sd 1:0:12:0: [sde] Mode Sense: 9f 00 10 08
> > [ 255.535967] sd 1:0:10:0: [sdc] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > [ 255.536140] sd 1:0:13:0: [sdf] 4165272 512-byte logical blocks: (2.13 GB/1.98 GiB)
> > [ 255.536319] sd 1:0:11:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > [ 255.611389] sd 1:0:12:0: [sde] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > [ 255.611526] sd 1:0:13:0: [sdf] Write Protect is off
> > [ 255.611542] sd 1:0:13:0: [sdf] Mode Sense: 9f 00 10 08
> > [ 255.724337] sd 1:0:13:0: [sdf] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > [ 255.960802] sda: sda1 sda2 sda3 sda4
> > [ 256.036886] sdd: unknown partition table
> > [ 256.038024] sdc: unknown partition table
> > [ 256.161971] sde: unknown partition table
> > [ 256.226521] sdf: unknown partition table
> > [ 256.287571] sd 1:0:2:0: [sda] Attached SCSI disk
> > [ 256.320837] sd 1:0:11:0: [sdd] Attached SCSI disk
> > [ 256.321195] sd 1:0:10:0: [sdc] Attached SCSI disk
> > [ 256.438589] sd 1:0:12:0: [sde] Attached SCSI disk
> > [ 256.484470] sd 1:0:13:0: [sdf] Attached SCSI disk
> > [ 257.730003] sd 1:0:4:0: [sdb] Write Protect is off
> > [ 257.769724] sd 1:0:4:0: [sdb] Mode Sense: cb 00 00 08
> > [ 257.816196] sd 1:0:4:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > [ 257.932380] sdb: unknown partition table
> > [ 257.967850] sd 1:0:4:0: [sdb] Attached SCSI disk
> > [ 258.009691] EXT4-fs (sda2): mounting ext3 file system using the ext4 subsystem
> > [ 258.103029] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
> > [ 258.177139] VFS: Mounted root (ext3 filesystem) readonly on device 8:2.
> > [ 258.268770] devtmpfs: mounted
> > [ 259.504165] stty (523) used greatest stack depth: 5544 bytes left
> > [ 261.465793] systemd-udevd[610]: starting version 215
> > [ 262.297628] hme f009fba8 eth7: renamed from eth2
> > [ 262.430354] systemd-udevd[634]: renamed network interface eth2 to eth7
> > [ 262.430471] hme f0099bf4 eth9: renamed from eth1
> > [ 262.553566] systemd-udevd[648]: renamed network interface eth1 to eth9
> > [ 262.633511] hme f008d070 eth1: renamed from eth0
> > [ 262.697674] hwclock (658) used greatest stack depth: 4168 bytes left
> > [ 262.773763] hme f00ab960 eth8: renamed from eth4
> > [ 262.873209] systemd-udevd[635]: renamed network interface eth0 to eth1
> > [ 262.918444] hme 0000:00:01.1 eth0: renamed from eth6
> > [ 262.918716] systemd-udevd[640]: renamed network interface eth4 to eth8
> > [ 263.053804] systemd-udevd[643]: renamed network interface eth6 to eth0
> > [ 263.114350] hme f01673a8 eth2: renamed from eth5
> > [ 263.192734] hme f00a5a84 eth10: renamed from eth3
> > [ 263.238837] systemd-udevd[641]: renamed network interface eth5 to eth2
> > [ 263.355961] systemd-udevd[639]: renamed network interface eth3 to eth10
> > [ 267.436399] Adding 787176k swap on /dev/sda4. Priority:-1 extents:1 across:787176k
> > [ 267.775195] EXT4-fs (sda2): re-mounted. Opts: (null)
> > [ 268.309702] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
> > [ 272.239364] EXT4-fs (sda1): mounting ext3 file system using the ext4 subsystem
> > [ 272.321644] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
> > [ 280.082651] eth0: Link is up using internal transceiver at 100Mb/s, Full Duplex.
> > [ 284.153738] basename (1686) used greatest stack depth: 3752 bytes left
> >
> > --
> > Meelis Roos (mroos@linux.ee)
> ---end quoted text---
>
>
^ permalink raw reply related [flat|nested] 11+ messages in thread
* Re: blk_mq: suspicious RCU usage, rcu_read_lock() used illegally while idle!
2014-11-06 17:11 ` Paul E. McKenney
@ 2014-11-07 10:50 ` Meelis Roos
0 siblings, 0 replies; 11+ messages in thread
From: Meelis Roos @ 2014-11-07 10:50 UTC (permalink / raw)
To: Paul E. McKenney
Cc: Christoph Hellwig, linux-scsi, Jens Axboe, David Miller, sparclinux
Added DaveM and sparclinux to CC.
On Thu, 6 Nov 2014, Paul E. McKenney wrote:
> On Thu, Nov 06, 2014 at 07:46:16AM -0800, Christoph Hellwig wrote:
> > Without help from Paul I can't even make sense of the message..
>
> It looks to me like the SUN4U architecture is failing to invoke
> rcu_irq_enter() on entry to the smp_call_function_single_client()
> IPI handler.
>
> And I am not seeing any sign of this in the call sequence in 3.17.
> Does the following patch help?
>
> ------------------------------------------------------------------------
>
> diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
> index 302c476413d5..971a488264ff 100644
> --- a/arch/sparc/kernel/smp_64.c
> +++ b/arch/sparc/kernel/smp_64.c
> @@ -822,7 +822,9 @@ void __irq_entry smp_call_function_client(int irq, struct pt_regs *regs)
> void __irq_entry smp_call_function_single_client(int irq, struct pt_regs *regs)
> {
> clear_softint(1 << irq);
> + irq_enter();
> generic_smp_call_function_single_interrupt();
> + irq_exit();
> }
>
> static void tsb_sync(void *info)
>
> ------------------------------------------------------------------------
It makes the RCU warning go away and the scsi controller still works.
> If there is something bad about invoking all of irq_enter() and irq_exit()
> for this handler on SPARC, perhaps this would be better:
>
> ------------------------------------------------------------------------
>
> diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
> index 302c476413d5..ce3e329c3ccc 100644
> --- a/arch/sparc/kernel/smp_64.c
> +++ b/arch/sparc/kernel/smp_64.c
> @@ -822,7 +822,9 @@ void __irq_entry smp_call_function_client(int irq, struct pt_regs *regs)
> void __irq_entry smp_call_function_single_client(int irq, struct pt_regs *regs)
> {
> clear_softint(1 << irq);
> + rcu_irq_enter();
> generic_smp_call_function_single_interrupt();
> + rcu_irq_exit();
> }
>
> static void tsb_sync(void *info)
>
> ------------------------------------------------------------------------
This works the same - no warning, everything still works.
Perhaps DaveM can tell which one is coreect or if there is any related
problem.
>
> Do either of these help?
>
> Thanx, Paul
>
> > On Thu, Nov 06, 2014 at 05:45:43PM +0200, Meelis Roos wrote:
> > > I tested a machine with multiple scsi adapters today with latest kernel
> > > and found the following warning in the logs. It is probably from QLA1040
> > > adapter initialization, full dmesg is below. Adaptec SCSI card dumps is
> > > normal on this server, it is usually there and seems to be harmless
> > > (maybe a supurious IRQ somewhere - but this should not be relevant).
> > >
> > > The message is not there for scsi_mod.use_blk_mq=0 boot.
> > >
> > > Booting 3.17.0 with scsi_mod.use_blk_mq=1 does not show this message
> > > either.
> > >
> > > [ 188.275021] ===============================
> > > [ 188.309351] [ INFO: suspicious RCU usage. ]
> > > [ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted
> > > [ 188.394786] -------------------------------
> > > [ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used
> > > illegally while idle!
> > > [ 188.505235]
> > > other info that might help us debug this:
> > >
> > > [ 188.554230]
> > > RCU used illegally from idle CPU!
> > > rcu_scheduler_active = 1, debug_locks = 0
> > > [ 188.637587] RCU used illegally from extended quiescent state!
> > > [ 188.690684] 3 locks held by swapper/7/0:
> > > [ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60
> > > [ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400
> > > [ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40
> > > [ 188.973043]stack backtrace:
> > > [ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > [ 189.076187] Call Trace:
> > > [ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100
> > > [ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40
> > > [ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400
> > > [ 189.252258] [000000000048554c] default_wake_function+0xc/0x20
> > > [ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80
> > > [ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40
> > > [ 189.406456] [0000000000495e08] complete+0x28/0x60
> > > [ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20
> > > [ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60
> > > [ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180
> > > [ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600
> > > [ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0
> > > [ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140
> > > [ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20
> > > [ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0
> > > [ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40
> > >
> > >
> > > Full dmesg:
> > >
> > > [ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 3.2.30 2002/10/25 14:03'
> > > [ 0.000000] PROMLIB: Root node compatible:
> > > [ 0.000000] Linux version 3.18.0-rc3-00068-g20f3963-dirty (mroos@korvits) (gcc version 4.9.1 (Debian 4.9.1-18) ) #54 SMP Thu Nov 6 14:37:34 EET 2014
> > > [ 0.000000] debug: ignoring loglevel setting.
> > > [ 0.000000] bootconsole [earlyprom0] enabled
> > > [ 0.000000] ARCH: SUN4U
> > > [ 0.000000] Ethernet address: 08:00:20:b6:ee:e2
> > > [ 0.000000] MM: PAGE_OFFSET is 0xfffff80000000000 (max_phys_bits == 40)
> > > [ 0.000000] MM: VMALLOC [0x0000000100000000 --> 0x0000060000000000]
> > > [ 0.000000] MM: VMEMMAP [0x0000060000000000 --> 0x00000c0000000000]
> > > [ 0.000000] Kernel: Using 6 locked TLB entries for main kernel image.
> > > [ 0.000000] Remapping the kernel... done.
> > > [ 0.000000] kmemleak: Kernel memory leak detector disabled
> > > [ 0.000000] OF stdout device is: /central@1f,0/fhc@0,f8800000/zs@0,902000:a
> > > [ 0.000000] PROM: Built device tree with 169763 bytes of memory.
> > > [ 0.000000] Top of RAM: 0x7fcf2000, Total RAM: 0x7f8c0000
> > > [ 0.000000] Memory hole size: 4MB
> > > [ 0.000000] Allocated 2113536 bytes for kernel page tables.
> > > [ 0.000000] Zone ranges:
> > > [ 0.000000] Normal [mem 0x00000000-0x7fcf1fff]
> > > [ 0.000000] Movable zone start for each node
> > > [ 0.000000] Early memory node ranges
> > > [ 0.000000] node 0: [mem 0x00000000-0x7f7ddfff]
> > > [ 0.000000] node 0: [mem 0x7fc00000-0x7fcd1fff]
> > > [ 0.000000] node 0: [mem 0x7fce2000-0x7fcf1fff]
> > > [ 0.000000] Initmem setup node 0 [mem 0x00000000-0x7fcf1fff]
> > > [ 0.000000] On node 0 totalpages: 261216
> > > [ 0.000000] Normal zone: 2301 pages used for memmap
> > > [ 0.000000] Normal zone: 0 pages reserved
> > > [ 0.000000] Normal zone: 261216 pages, LIFO batch:15
> > > [ 0.000000] Booting Linux...
> > > [ 0.000000] CPU CAPS: [flush,stbar,swap,muldiv,v9,mul32,div32,v8plus]
> > > [ 0.000000] CPU CAPS: [vis]
> > > [ 0.000000] PERCPU: Embedded 7 pages/cpu @fffff8007f000000 s15808 r8192 d33344 u2097152
> > > [ 0.000000] pcpu-alloc: s15808 r8192 d33344 u2097152 alloc=1*4194304
> > > [ 0.000000] pcpu-alloc: [0] 6 7
> > > [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 258915
> > > [ 0.000000] Kernel command line: root=/dev/sda2 ro debug ignore_loglevel
> > > [ 0.000000] PID hash table entries: 4096 (order: 2, 32768 bytes)
> > > [ 0.000000] Dentry cache hash table entries: 262144 (order: 8, 2097152 bytes)
> > > [ 0.000000] Inode-cache hash table entries: 131072 (order: 7, 1048576 bytes)
> > > [ 0.000000] Sorting __ex_table...
> > > [ 0.000000] Memory: 2037784K/2089728K available (4533K kernel code, 305K rwdata, 1504K rodata, 576K init, 14539K bss, 51944K reserved)
> > > [ 0.000000] Hierarchical RCU implementation.
> > > [ 0.000000] RCU lockdep checking is enabled.
> > > [ 0.000000] RCU restricting CPUs from NR_CPUS=16 to nr_cpu_ids=8.
> > > [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=8
> > > [ 0.000000] NR_IRQS:2048 nr_irqs:2048 1
> > > [ 161.238391] clocksource: mult[2800000] shift[24]
> > > [ 161.277473] clockevent: mult[66666666] shift[32]
> > > [ 161.318721] Console: colour dummy device 80x25
> > > [ 161.355382] console [tty0] enabled
> > > [ 161.380218] bootconsole [earlyprom0] disabled
> > > [ 161.416696] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
> > > [ 161.416740] ... MAX_LOCKDEP_SUBCLASSES: 8
> > > [ 161.416765] ... MAX_LOCK_DEPTH: 48
> > > [ 161.416790] ... MAX_LOCKDEP_KEYS: 8191
> > > [ 161.416816] ... CLASSHASH_SIZE: 4096
> > > [ 161.416841] ... MAX_LOCKDEP_ENTRIES: 32768
> > > [ 161.416867] ... MAX_LOCKDEP_CHAINS: 65536
> > > [ 161.416892] ... CHAINHASH_SIZE: 32768
> > > [ 161.416918] memory used by lock dependency info: 8159 kB
> > > [ 161.416949] per task-struct memory footprint: 1920 bytes
> > > [ 161.416978] ------------------------
> > > [ 161.416999] | Locking API testsuite:
> > > [ 161.417019] ----------------------------------------------------------------------------
> > > [ 161.417061] | spin |wlock |rlock |mutex | wsem | rsem |
> > > [ 161.417104] --------------------------------------------------------------------------
> > > [ 161.417173] A-A deadlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.457494] A-B-B-A deadlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.495480] A-B-B-C-C-A deadlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.533653] A-B-C-A-B-C deadlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.571829] A-B-B-C-C-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.610241] A-B-C-D-B-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.648630] A-B-C-D-B-C-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.687043] double unlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.724876] initialize held: ok | ok | ok | ok | ok | ok |
> > > [ 161.762661] bad unlock order: ok | ok | ok | ok | ok | ok |
> > > [ 161.800701] --------------------------------------------------------------------------
> > > [ 161.800747] recursive read-lock: | ok | | ok |
> > > [ 161.813409] recursive read-lock #2: | ok | | ok |
> > > [ 161.826070] mixed read-write-lock: | ok | | ok |
> > > [ 161.838756] mixed write-read-lock: | ok | | ok |
> > > [ 161.851441] --------------------------------------------------------------------------
> > > [ 161.851489] hard-irqs-on + irq-safe-A/12: ok | ok | ok |
> > > [ 161.870404] soft-irqs-on + irq-safe-A/12: ok | ok | ok |
> > > [ 161.889387] hard-irqs-on + irq-safe-A/21: ok | ok | ok |
> > > [ 161.908303] soft-irqs-on + irq-safe-A/21: ok | ok | ok |
> > > [ 161.927281] sirq-safe-A => hirqs-on/12: ok | ok | ok |
> > > [ 161.946218] sirq-safe-A => hirqs-on/21: ok | ok | ok |
> > > [ 161.965194] hard-safe-A + irqs-on/12: ok | ok | ok |
> > > [ 161.984110] soft-safe-A + irqs-on/12: ok | ok | ok |
> > > [ 162.003086] hard-safe-A + irqs-on/21: ok | ok | ok |
> > > [ 162.022023] soft-safe-A + irqs-on/21: ok | ok | ok |
> > > [ 162.041005] hard-safe-A + unsafe-B #1/123: ok | ok | ok |
> > > [ 162.060021] soft-safe-A + unsafe-B #1/123: ok | ok | ok |
> > > [ 162.079090] hard-safe-A + unsafe-B #1/132: ok | ok | ok |
> > > [ 162.098089] soft-safe-A + unsafe-B #1/132: ok | ok | ok |
> > > [ 162.117160] hard-safe-A + unsafe-B #1/213: ok | ok | ok |
> > > [ 162.136184] soft-safe-A + unsafe-B #1/213: ok | ok | ok |
> > > [ 162.155258] hard-safe-A + unsafe-B #1/231: ok | ok | ok |
> > > [ 162.174253] soft-safe-A + unsafe-B #1/231: ok | ok | ok |
> > > [ 162.193316] hard-safe-A + unsafe-B #1/312: ok | ok | ok |
> > > [ 162.212268] soft-safe-A + unsafe-B #1/312: ok | ok | ok |
> > > [ 162.231264] hard-safe-A + unsafe-B #1/321: ok | ok | ok |
> > > [ 162.250265] soft-safe-A + unsafe-B #1/321: ok | ok | ok |
> > > [ 162.269312] hard-safe-A + unsafe-B #2/123: ok | ok | ok |
> > > [ 162.288321] soft-safe-A + unsafe-B #2/123: ok | ok | ok |
> > > [ 162.307393] hard-safe-A + unsafe-B #2/132: ok | ok | ok |
> > > [ 162.326395] soft-safe-A + unsafe-B #2/132: ok | ok | ok |
> > > [ 162.345469] hard-safe-A + unsafe-B #2/213: ok | ok | ok |
> > > [ 162.364485] soft-safe-A + unsafe-B #2/213: ok | ok | ok |
> > > [ 162.383569] hard-safe-A + unsafe-B #2/231: ok | ok | ok |
> > > [ 162.402578] soft-safe-A + unsafe-B #2/231: ok | ok | ok |
> > > [ 162.421652] hard-safe-A + unsafe-B #2/312: ok | ok | ok |
> > > [ 162.440662] soft-safe-A + unsafe-B #2/312: ok | ok | ok |
> > > [ 162.459750] hard-safe-A + unsafe-B #2/321: ok | ok | ok |
> > > [ 162.478756] soft-safe-A + unsafe-B #2/321: ok | ok | ok |
> > > [ 162.497822] hard-irq lock-inversion/123: ok | ok | ok |
> > > [ 162.516832] soft-irq lock-inversion/123: ok | ok | ok |
> > > [ 162.535924] hard-irq lock-inversion/132: ok | ok | ok |
> > > [ 162.554942] soft-irq lock-inversion/132: ok | ok | ok |
> > > [ 162.574036] hard-irq lock-inversion/213: ok | ok | ok |
> > > [ 162.593071] soft-irq lock-inversion/213: ok | ok | ok |
> > > [ 162.612151] hard-irq lock-inversion/231: ok | ok | ok |
> > > [ 162.631163] soft-irq lock-inversion/231: ok | ok | ok |
> > > [ 162.650245] hard-irq lock-inversion/312: ok | ok | ok |
> > > [ 162.669272] soft-irq lock-inversion/312: ok | ok | ok |
> > > [ 162.688368] hard-irq lock-inversion/321: ok | ok | ok |
> > > [ 162.707370] soft-irq lock-inversion/321: ok | ok | ok |
> > > [ 162.726457] hard-irq read-recursion/123: ok |
> > > [ 162.732811] soft-irq read-recursion/123: ok |
> > > [ 162.739223] hard-irq read-recursion/132: ok |
> > > [ 162.745568] soft-irq read-recursion/132: ok |
> > > [ 162.751969] hard-irq read-recursion/213: ok |
> > > [ 162.758313] soft-irq read-recursion/213: ok |
> > > [ 162.764715] hard-irq read-recursion/231: ok |
> > > [ 162.771062] soft-irq read-recursion/231: ok |
> > > [ 162.777472] hard-irq read-recursion/312: ok |
> > > [ 162.783817] soft-irq read-recursion/312: ok |
> > > [ 162.790220] hard-irq read-recursion/321: ok |
> > > [ 162.796571] soft-irq read-recursion/321: ok |
> > > [ 162.802972] --------------------------------------------------------------------------
> > > [ 162.803016] | Wound/wait tests |
> > > [ 162.803039] ---------------------
> > > [ 162.803064] ww api failures: ok | ok | ok |
> > > [ 162.822112] ww contexts mixing: ok | ok |
> > > [ 162.834785] finishing ww context: ok | ok | ok | ok |
> > > [ 162.860095] locking mismatches: ok | ok | ok |
> > > [ 162.879128] EDEADLK handling: ok | ok | ok | ok | ok | ok | ok | ok | ok | ok |
> > > [ 162.942686] spinlock nest unlocked: ok |
> > > [ 162.949005] -----------------------------------------------------
> > > [ 162.949044] |block | try |context|
> > > [ 162.949082] -----------------------------------------------------
> > > [ 162.949121] context: ok | ok | ok |
> > > [ 162.968211] try: ok | ok | ok |
> > > [ 162.987181] block: ok | ok | ok |
> > > [ 163.006186] spinlock: ok | ok | ok |
> > > [ 163.025283] -------------------------------------------------------
> > > [ 163.025322] Good, all 253 testcases passed! |
> > > [ 163.025349] ---------------------------------
> > > [ 163.027126] ODEBUG: selftest passed
> > > [ 163.027345] kmemleak: Early log buffer exceeded (3329), please increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE
> > > [ 163.169263] Calibrating delay using timer specific routine.. 804.17 BogoMIPS (lpj=4020880)
> > > [ 163.169341] pid_max: default: 32768 minimum: 301
> > > [ 163.170354] Mount-cache hash table entries: 4096 (order: 2, 32768 bytes)
> > > [ 163.170426] Mountpoint-cache hash table entries: 4096 (order: 2, 32768 bytes)
> > > [ 163.191280] CPU 7: synchronized TICK with master CPU (last diff -8 cycles, maxerr 677 cycles)
> > > [ 163.191904] Brought up 2 CPUs
> > > [ 163.196096] devtmpfs: initialized
> > > [ 163.199102] Performance events: No support for PMU type 'ultra12'
> > > [ 163.282260] atomic64_test: passed
> > > [ 163.284207] kworker/u4:0 (20) used greatest stack depth: 8216 bytes left
> > > [ 163.300285] device-tree: Duplicate name in base, renamed to "fhc#1"
> > > [ 163.307412] device-tree: Duplicate name in base, renamed to "counter-timer#1"
> > > [ 163.312131] device-tree: Duplicate name in base, renamed to "fhc#2"
> > > [ 163.314228] device-tree: Duplicate name in base, renamed to "counter-timer#2"
> > > [ 163.318010] device-tree: Duplicate name in base, renamed to "counter-timer#3"
> > > [ 163.323548] device-tree: Duplicate name in base, renamed to "fhc#3"
> > > [ 163.325699] device-tree: Duplicate name in base, renamed to "counter-timer#4"
> > > [ 163.330745] device-tree: Duplicate name in base, renamed to "counter-timer#5"
> > > [ 163.333752] NET: Registered protocol family 16
> > > [ 163.344321] kworker/u4:0 (31) used greatest stack depth: 7976 bytes left
> > > [ 163.347152] kworker/u4:0 (34) used greatest stack depth: 7896 bytes left
> > > [ 163.390763] SYSIO: UPA portID ffffffff, at 000001c400000000
> > > [ 163.400388] SYSIO: UPA portID ffffffff, at 000001c600000000
> > > [ 163.410018] SYSIO: UPA portID ffffffff, at 000001d400000000
> > > [ 163.420198] SYSIO: UPA portID ffffffff, at 000001d600000000
> > > [ 163.439052] /pci@e,4000: PCI IO[1dc02010000] MEM[1dd80000000]
> > > [ 163.439288] /pci@e,4000: PSYCHO PCI Bus Module ver[4:0]
> > > [ 163.439377] PCI: Scanning PBM /pci@e,4000
> > > [ 163.440634] psycho f01bf7bc: PCI host bridge to bus 0000:00
> > > [ 163.440713] pci_bus 0000:00: root bus resource [io 0x1dc02010000-0x1dc0201ffff] (bus address [0x0000-0xffff])
> > > [ 163.440818] pci_bus 0000:00: root bus resource [mem 0x1dd80000000-0x1ddffffffff] (bus address [0x00000000-0x7fffffff])
> > > [ 163.440929] pci_bus 0000:00: root bus resource [bus 00]
> > > [ 163.445838] /pci@e,2000: PCI IO[1dc02000000] MEM[1dd00000000]
> > > [ 163.445927] /pci@e,2000: PSYCHO PCI Bus Module ver[4:0]
> > > [ 163.445984] PCI: Scanning PBM /pci@e,2000
> > > [ 163.446800] psycho f01c88e0: PCI host bridge to bus 0001:80
> > > [ 163.446876] pci_bus 0001:80: root bus resource [io 0x1dc02000000-0x1dc0200ffff] (bus address [0x0000-0xffff])
> > > [ 163.446983] pci_bus 0001:80: root bus resource [mem 0x1dd00000000-0x1dd7fffffff] (bus address [0x00000000-0x7fffffff])
> > > [ 163.447088] pci_bus 0001:80: root bus resource [bus 80]
> > > [ 163.457405] /pci@f,4000: PCI IO[1de02010000] MEM[1df80000000]
> > > [ 163.457494] /pci@f,4000: PSYCHO PCI Bus Module ver[4:0]
> > > [ 163.457549] PCI: Scanning PBM /pci@f,4000
> > > [ 163.458367] psycho f01ca118: PCI host bridge to bus 0002:00
> > > [ 163.458443] pci_bus 0002:00: root bus resource [io 0x1de02010000-0x1de0201ffff] (bus address [0x0000-0xffff])
> > > [ 163.458547] pci_bus 0002:00: root bus resource [mem 0x1df80000000-0x1dfffffffff] (bus address [0x00000000-0x7fffffff])
> > > [ 163.458653] pci_bus 0002:00: root bus resource [bus 00]
> > > [ 163.461719] /pci@f,2000: PCI IO[1de02000000] MEM[1df00000000]
> > > [ 163.461804] /pci@f,2000: PSYCHO PCI Bus Module ver[4:0]
> > > [ 163.461859] PCI: Scanning PBM /pci@f,2000
> > > [ 163.462668] psycho f01d320c: PCI host bridge to bus 0003:80
> > > [ 163.462743] pci_bus 0003:80: root bus resource [io 0x1de02000000-0x1de0200ffff] (bus address [0x0000-0xffff])
> > > [ 163.462855] pci_bus 0003:80: root bus resource [mem 0x1df00000000-0x1df7fffffff] (bus address [0x00000000-0x7fffffff])
> > > [ 163.462964] pci_bus 0003:80: root bus resource [bus 80]
> > > [ 163.580345] vgaarb: loaded
> > > [ 163.584298] SCSI subsystem initialized
> > > [ 163.592449] /central/fhc@0,f8800000/eeprom@0,908000: Mostek regs at 0x1fff8908000
> > > [ 163.595898] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e] (Central)
> > > [ 163.596622] fhc: Board #3, Version[1] PartID[fa0] Manuf[3e] (JTAG Master)
> > > [ 163.597384] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e]
> > > [ 163.598197] fhc: Board #5, Version[1] PartID[fa0] Manuf[3e]
> > > [ 163.598978] fhc: Board #7, Version[1] PartID[fa0] Manuf[3e]
> > > [ 163.600178] clock_board: Detected 5 slot Enterprise system.
> > > [ 163.690823] DMA-API: preallocated 32768 debug entries
> > > [ 163.690902] DMA-API: debugging enabled by kernel config
> > > [ 163.693159] Switched to clocksource tick
> > > [ 163.703829] kworker/u4:0 (280) used greatest stack depth: 7752 bytes left
> > > [ 163.754938] NET: Registered protocol family 2
> > > [ 163.757716] TCP established hash table entries: 16384 (order: 4, 131072 bytes)
> > > [ 163.758687] TCP bind hash table entries: 16384 (order: 7, 1048576 bytes)
> > > [ 163.768861] TCP: Hash tables configured (established 16384 bind 16384)
> > > [ 163.769822] TCP: reno registered
> > > [ 163.769975] UDP hash table entries: 1024 (order: 4, 163840 bytes)
> > > [ 163.771566] UDP-Lite hash table entries: 1024 (order: 4, 163840 bytes)
> > > [ 163.775400] NET: Registered protocol family 1
> > > [ 163.775741] PCI: CLS 0 bytes, default 64
> > > [ 163.784319] futex hash table entries: 512 (order: 3, 65536 bytes)
> > > [ 163.784865] ====[ backtrace testing ]===========
> > > [ 163.784908] Testing a backtrace from process context.
> > > [ 163.784952] The following trace is a kernel self test and not a bug!
> > > [ 163.785015] CPU: 6 PID: 1 Comm: swapper/6 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > [ 163.785076] Call Trace:
> > > [ 163.785122] [00000000004cd80c] backtrace_regression_test+0x2c/0x100
> > > [ 163.785183] [0000000000426ea4] do_one_initcall+0xe4/0x1e0
> > > [ 163.785250] [0000000000a40b44] kernel_init_freeable+0x120/0x1d0
> > > [ 163.785326] [0000000000865a84] kernel_init+0x4/0x100
> > > [ 163.785389] [0000000000406104] ret_from_fork+0x1c/0x2c
> > > [ 163.785436] [0000000000000000] (null)
> > > [ 163.785477] Testing a backtrace from irq context.
> > > [ 163.785519] The following trace is a kernel self test and not a bug!
> > > [ 163.786004] CPU: 6 PID: 3 Comm: ksoftirqd/6 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > [ 163.786068] Call Trace:
> > > [ 163.786116] [00000000004cd7c4] backtrace_test_irq_callback+0x4/0x20
> > > [ 163.786183] [000000000045f278] tasklet_action+0x98/0x120
> > > [ 163.786238] [000000000045f3f0] __do_softirq+0xf0/0x240
> > > [ 163.786294] [000000000045f568] run_ksoftirqd+0x28/0x80
> > > [ 163.786373] [000000000047e3e4] smpboot_thread_fn+0x244/0x280
> > > [ 163.786440] [0000000000479ef0] kthread+0xb0/0xe0
> > > [ 163.786496] [0000000000406104] ret_from_fork+0x1c/0x2c
> > > [ 163.786546] [0000000000000000] (null)
> > > [ 163.786707] Testing a saved backtrace.
> > > [ 163.786753] The following trace is a kernel self test and not a bug!
> > > [ 163.786810] [<00000000004cd8a8>] backtrace_regression_test+0xc8/0x100
> > > [ 163.786888] [<0000000000426ea4>] do_one_initcall+0xe4/0x1e0
> > > [ 163.786952] [<0000000000a40b44>] kernel_init_freeable+0x120/0x1d0
> > > [ 163.787022] [<0000000000865a84>] kernel_init+0x4/0x100
> > > [ 163.787088] [<0000000000406104>] ret_from_fork+0x1c/0x2c
> > > [ 163.787153] [< (null)>] (null)
> > > [ 163.787207] ====[ end of backtrace testing ]====
> > > [ 163.787332] audit: initializing netlink subsys (disabled)
> > > [ 163.787886] audit: type=2000 audit(2.050:1): initialized
> > > [ 163.791649] HugeTLB registered 8 MB page size, pre-allocated 0 pages
> > > [ 163.797716] msgmni has been set to 3980
> > > [ 163.803398] io scheduler noop registered
> > > [ 163.803651] io scheduler cfq registered (default)
> > > [ 163.803717] start plist test
> > > [ 163.826582] end plist test
> > > [ 163.831561] test_string_helpers: Running tests...
> > > [ 164.044577] zs f005de3c: ttyS0 at MMIO 0x1fff8902000 (irq = 2, base_baud = 307200) is a zs (ESCC)
> > > [ 164.044724] Console: ttyS0 (SunZilog zs0)
> > > [ 179.468351] console [ttyS0] enabled
> > > [ 179.496405] zs f005de3c: ttyS1 at MMIO 0x1fff8902004 (irq = 2, base_baud = 307200) is a zs (ESCC)
> > > [ 179.795321] f005df14: Keyboard at MMIO 0x1fff8904000 (irq = 2) is a zs
> > > [ 179.855846] f005df14: Mouse at MMIO 0x1fff8904004 (irq = 2) is a zs
> > > [ 179.954009] loop: module loaded
> > > [ 179.975578] PCI: Enabling device: (0003:80:02.0), cmd 3
> > > [ 185.152853] scsi0: Missing case in ahd_handle_scsiint. status = 0
> > > [ 185.208135] >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<
> > > scsi0: Dumping Card State at program address 0x0 Mode 0x33
> > > [ 185.334228] Card was paused
> > > [ 185.351888] INTSTAT[0x8]:(SCSIINT) SELOID[0x0] SELID[0x0] HS_MAILBOX[0x0]
> > > [ 185.418562] INTCTL[0x0] SEQINTSTAT[0x0] SAVED_MODE[0x25] DFFSTAT[0x33]:(CURRFIFO_NONE|FIFO0FREE|FIFO1FREE)
> > > [ 185.519625] SCSISIGI[0x0]:(P_DATAOUT) SCSIPHASE[0x0] SCSIBUS[0x0]
> > > [ 185.577970] LASTPHASE[0x1]:(P_DATAOUT|P_BUSFREE) SCSISEQ0[0x0]
> > > [ 185.633186] SCSISEQ1[0x12]:(ENAUTOATNP|ENRSELI) SEQCTL0[0x0] SEQINTCTL[0x0]
> > > [ 185.701952] SEQ_FLAGS[0x0] SEQ_FLAGS2[0x0] QFREEZE_COUNT[0x0]
> > > [ 185.756130] KERNEL_QFREEZE_COUNT[0x0] MK_MESSAGE_SCB[0xff00] MK_MESSAGE_SCSIID[0xff]
> > > [ 185.834268] SSTAT0[0x0] SSTAT1[0x0] SSTAT2[0x0] SSTAT3[0x0] PERRDIAG[0x0]
> > > [ 185.900952] SIMODE1[0xa4]:(ENSCSIPERR|ENSCSIRST|ENSELTIMO) LQISTAT0[0x0]
> > > [ 185.966586] LQISTAT1[0x0] LQISTAT2[0x0] LQOSTAT0[0x0] LQOSTAT1[0x0]
> > > [ 186.027015] LQOSTAT2[0x0]
> > > [ 186.043701]
> > > SCB Count = 8 CMDS_PENDING = 0 LASTSCB 0xffff CURRSCB 0x0 NEXTSCB 0x0
> > > [ 186.119786] qinstart = 0 qinfifonext = 0
> > > QINFIFO:
> > > WAITING_TID_QUEUES:
> > > [ 186.183326] Pending list:
> > > Total 0
> > > [ 186.208314] Kernel Free SCB list: 7 6 5 4 3 2 1 0
> > > [ 186.249973] Sequencer Complete DMA-inprog list:
> > > [ 186.289562] Sequencer Complete list:
> > > [ 186.317694] Sequencer DMA-Up and Complete list:
> > > [ 186.357284] Sequencer On QFreeze and Complete list:
> > > [ 186.401059]
> > >
> > > scsi0: FIFO0 Free, LONGJMP == 0x803b, SCB 0x0
> > > [ 186.454230] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
> > > [ 186.544821] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
> > > [ 186.622965] SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
> > > [ 186.689642] SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
> > > [ 186.766758] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
> > >
> > > scsi0: FIFO1 Free, LONGJMP == 0x80bc, SCB 0x0
> > > [ 186.878272] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
> > > [ 186.968863] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
> > > [ 187.047006] SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
> > > [ 187.113688] SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
> > > [ 187.190796] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
> > > LQIN: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
> > > [ 187.342907] scsi0: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x52
> > > [ 187.403351] scsi0: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x0
> > > [ 187.449192] scsi0: SAVED_SCSIID = 0x0 SAVED_LUN = 0x0
> > >
> > > [ 187.496052] SIMODE0[0x6c]:(ENOVERRUN|ENIOERR|ENSELDI|ENSELDO)
> > > [ 187.550231] CCSCBCTL[0x0]
> > > [ 187.566913] scsi0: REG0 == 0x45d1, SINDEX = 0x0, DINDEX = 0x0
> > > [ 187.620062] scsi0: SCBPTR == 0x1ff, SCB_NEXT == 0xff00, SCB_NEXT2 == 0x0
> > > [ 187.684665] CDB ff 1 0 0 0 0
> > > [ 187.703390] STACK: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
> > > <<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>
> > > [ 187.806958] scsi host0: Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 3.0
> > > <Adaptec 29320ALP PCIx Ultra320 SCSI adapter>
> > > aic7901: Ultra320 Wide Channel A, SCSI Id=7, PCI 33 or 66MHz, 512 SCBs
> > > [ 188.016407] qla1280: QLA1040 found on PCI bus 0, dev 3
> > > [ 188.060231] PCI: Enabling device: (0002:00:03.0), cmd 7
> > >
> > > [ 188.275021] ===============================
> > > [ 188.309351] [ INFO: suspicious RCU usage. ]
> > > [ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted
> > > [ 188.394786] -------------------------------
> > > [ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used illegally while idle!
> > > [ 188.505235]
> > > other info that might help us debug this:
> > >
> > > [ 188.554230]
> > > RCU used illegally from idle CPU!
> > > rcu_scheduler_active = 1, debug_locks = 0
> > > [ 188.637587] RCU used illegally from extended quiescent state!
> > > [ 188.690684] 3 locks held by swapper/7/0:
> > > [ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60
> > > [ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400
> > > [ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40
> > > [ 188.973043]
> > > stack backtrace:
> > > [ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > [ 189.076187] Call Trace:
> > > [ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100
> > > [ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40
> > > [ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400
> > > [ 189.252258] [000000000048554c] default_wake_function+0xc/0x20
> > > [ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80
> > > [ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40
> > > [ 189.406456] [0000000000495e08] complete+0x28/0x60
> > > [ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20
> > > [ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60
> > > [ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180
> > > [ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600
> > > [ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0
> > > [ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140
> > > [ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20
> > > [ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0
> > > [ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40
> > > [ 190.269728] random: nonblocking pool is initialized
> > > [ 190.828808] scsi(1:0): Resetting SCSI BUS
> > > [ 193.862671] scsi host1: QLogic QLA1040 PCI to SCSI Host Adapter
> > > Firmware version: 7.65.06, Driver version 3.27.1
> > > [ 193.976290] blk-mq: reduced tag depth to 10240
> > > [ 194.037930] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 8.07.00.16-k.
> > > [ 194.118405] PCI: Enabling device: (0001:80:02.0), cmd 3
> > > [ 194.165280] qla2xxx [0001:80:02.0]-001d: : Found an ISP2200 irq 49 iobase 0x000001dd00002000.
> > > [ 194.353211] qla2xxx 0001:80:02.0: Direct firmware load for ql2200_fw.bin failed with error -2
> > > [ 194.437839] qla2xxx 0001:80:02.0: Falling back to user helper
> > > [ 194.491932] scsi 1:0:2:0: Direct-Access IBM DDYS-T18350M S96H PQ: 0 ANSI: 3
> > > [ 194.573022] scsi(1:0:2:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > [ 194.823272] scsi 1:0:4:0: Direct-Access IBM DDYS-T18350M S80D PQ: 0 ANSI: 3
> > > [ 194.903416] scsi(1:0:4:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > [ 195.662569] scsi 1:0:10:0: Direct-Access HP 9.10GB A 80-6331 PQ: 0 ANSI: 2
> > > [ 195.743713] scsi(1:0:10:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > [ 195.830214] scsi 1:0:11:0: Direct-Access IBM DDRS-34560D DC1B PQ: 0 ANSI: 2
> > > [ 195.911336] scsi(1:0:11:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > [ 196.006929] scsi 1:0:12:0: Direct-Access HP 4.26GB A 80-0430 0430 PQ: 0 ANSI: 2
> > > [ 196.087903] scsi(1:0:12:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > [ 196.187208] scsi 1:0:13:0: Direct-Access HP 2.13GB A 80-0430 0430 PQ: 0 ANSI: 2
> > > [ 196.268525] scsi(1:0:13:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > [ 254.692919] qla2xxx [0001:80:02.0]-0063:2: Failed to load firmware image (ql2200_fw.bin).
> > > [ 254.773218] qla2xxx [0001:80:02.0]-0083:2: Fimware image unavailable.
> > > [ 254.834679] qla2xxx [0001:80:02.0]-0084:2: Firmware images can be retrieved from: http://ldriver.qlogic.com/firmware/.
> > > [ 254.947216] qla2xxx [0001:80:02.0]-00cf:2: Setup chip ****FAILED****.
> > > [ 255.008657] qla2xxx [0001:80:02.0]-00d6:2: Failed to initialize adapter - Adapter flags 2.
> > > [ 255.097006] sunhme.c:v3.10 August 26, 2008 David S. Miller (davem@davemloft.net)
> > > [ 255.170460] eth0: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:b6:ee:e2
> > > [ 255.235445] sd 1:0:4:0: [sdb] 35843670 512-byte logical blocks: (18.3 GB/17.0 GiB)
> > > [ 255.237573] eth1: Quattro HME slot 0 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:94
> > > [ 255.239977] eth2: Quattro HME slot 1 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:95
> > > [ 255.242388] eth3: Quattro HME slot 2 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:96
> > > [ 255.244859] eth4: Quattro HME slot 3 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:97
> > > [ 255.247283] eth5: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:b6:ee:e2
> > > [ 255.247840] PCI: Enabling device: (0000:00:01.1), cmd 2
> > > [ 255.250196] eth6: HAPPY MEAL (PCI/CheerIO) 10/100BaseT Ethernet 08:00:20:b6:ee:e2
> > > [ 255.251312] sd 1:0:2:0: [sda] 35843670 512-byte logical blocks: (18.3 GB/17.0 GiB)
> > > [ 255.310326] sd 1:0:2:0: [sda] Write Protect is off
> > > [ 255.310343] sd 1:0:2:0: [sda] Mode Sense: cb 00 00 08
> > > [ 255.310591] sd 1:0:10:0: [sdc] 17773524 512-byte logical blocks: (9.10 GB/8.47 GiB)
> > > [ 255.310697] sd 1:0:11:0: [sdd] 8925000 512-byte logical blocks: (4.56 GB/4.25 GiB)
> > > [ 255.311960] mousedev: PS/2 mouse device common for all mice
> > > [ 255.315824] rtc-m48t59 rtc-m48t59.0: rtc core: registered m48t59 as rtc0
> > > [ 255.317082] TCP: cubic registered
> > > [ 255.317108] NET: Registered protocol family 17
> > > [ 255.318580] registered taskstats version 1
> > > [ 255.385635] sd 1:0:12:0: [sde] 8330543 512-byte logical blocks: (4.26 GB/3.97 GiB)
> > > [ 255.385792] sd 1:0:10:0: [sdc] Write Protect is off
> > > [ 255.385809] sd 1:0:10:0: [sdc] Mode Sense: 9f 00 10 08
> > > [ 255.385905] sd 1:0:11:0: [sdd] Write Protect is off
> > > [ 255.385921] sd 1:0:11:0: [sdd] Mode Sense: b9 00 00 08
> > > [ 255.460208] rtc-m48t59 rtc-m48t59.0: setting system clock to 2014-11-06 14:44:49 UTC (1415285089)
> > > [ 255.460593] sd 1:0:2:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > > [ 255.460897] sd 1:0:12:0: [sde] Write Protect is off
> > > [ 255.460913] sd 1:0:12:0: [sde] Mode Sense: 9f 00 10 08
> > > [ 255.535967] sd 1:0:10:0: [sdc] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > > [ 255.536140] sd 1:0:13:0: [sdf] 4165272 512-byte logical blocks: (2.13 GB/1.98 GiB)
> > > [ 255.536319] sd 1:0:11:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > > [ 255.611389] sd 1:0:12:0: [sde] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > > [ 255.611526] sd 1:0:13:0: [sdf] Write Protect is off
> > > [ 255.611542] sd 1:0:13:0: [sdf] Mode Sense: 9f 00 10 08
> > > [ 255.724337] sd 1:0:13:0: [sdf] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > > [ 255.960802] sda: sda1 sda2 sda3 sda4
> > > [ 256.036886] sdd: unknown partition table
> > > [ 256.038024] sdc: unknown partition table
> > > [ 256.161971] sde: unknown partition table
> > > [ 256.226521] sdf: unknown partition table
> > > [ 256.287571] sd 1:0:2:0: [sda] Attached SCSI disk
> > > [ 256.320837] sd 1:0:11:0: [sdd] Attached SCSI disk
> > > [ 256.321195] sd 1:0:10:0: [sdc] Attached SCSI disk
> > > [ 256.438589] sd 1:0:12:0: [sde] Attached SCSI disk
> > > [ 256.484470] sd 1:0:13:0: [sdf] Attached SCSI disk
> > > [ 257.730003] sd 1:0:4:0: [sdb] Write Protect is off
> > > [ 257.769724] sd 1:0:4:0: [sdb] Mode Sense: cb 00 00 08
> > > [ 257.816196] sd 1:0:4:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > > [ 257.932380] sdb: unknown partition table
> > > [ 257.967850] sd 1:0:4:0: [sdb] Attached SCSI disk
> > > [ 258.009691] EXT4-fs (sda2): mounting ext3 file system using the ext4 subsystem
> > > [ 258.103029] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
> > > [ 258.177139] VFS: Mounted root (ext3 filesystem) readonly on device 8:2.
> > > [ 258.268770] devtmpfs: mounted
> > > [ 259.504165] stty (523) used greatest stack depth: 5544 bytes left
> > > [ 261.465793] systemd-udevd[610]: starting version 215
> > > [ 262.297628] hme f009fba8 eth7: renamed from eth2
> > > [ 262.430354] systemd-udevd[634]: renamed network interface eth2 to eth7
> > > [ 262.430471] hme f0099bf4 eth9: renamed from eth1
> > > [ 262.553566] systemd-udevd[648]: renamed network interface eth1 to eth9
> > > [ 262.633511] hme f008d070 eth1: renamed from eth0
> > > [ 262.697674] hwclock (658) used greatest stack depth: 4168 bytes left
> > > [ 262.773763] hme f00ab960 eth8: renamed from eth4
> > > [ 262.873209] systemd-udevd[635]: renamed network interface eth0 to eth1
> > > [ 262.918444] hme 0000:00:01.1 eth0: renamed from eth6
> > > [ 262.918716] systemd-udevd[640]: renamed network interface eth4 to eth8
> > > [ 263.053804] systemd-udevd[643]: renamed network interface eth6 to eth0
> > > [ 263.114350] hme f01673a8 eth2: renamed from eth5
> > > [ 263.192734] hme f00a5a84 eth10: renamed from eth3
> > > [ 263.238837] systemd-udevd[641]: renamed network interface eth5 to eth2
> > > [ 263.355961] systemd-udevd[639]: renamed network interface eth3 to eth10
> > > [ 267.436399] Adding 787176k swap on /dev/sda4. Priority:-1 extents:1 across:787176k
> > > [ 267.775195] EXT4-fs (sda2): re-mounted. Opts: (null)
> > > [ 268.309702] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
> > > [ 272.239364] EXT4-fs (sda1): mounting ext3 file system using the ext4 subsystem
> > > [ 272.321644] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
> > > [ 280.082651] eth0: Link is up using internal transceiver at 100Mb/s, Full Duplex.
> > > [ 284.153738] basename (1686) used greatest stack depth: 3752 bytes left
> > >
> > > --
> > > Meelis Roos (mroos@linux.ee)
> > ---end quoted text---
> >
> >
>
>
--
Meelis Roos (mroos@ut.ee) http://www.cs.ut.ee/~mroos/
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: blk_mq: suspicious RCU usage, rcu_read_lock() used illegally while idle!
@ 2014-11-07 10:50 ` Meelis Roos
0 siblings, 0 replies; 11+ messages in thread
From: Meelis Roos @ 2014-11-07 10:50 UTC (permalink / raw)
To: Paul E. McKenney
Cc: Christoph Hellwig, linux-scsi, Jens Axboe, David Miller, sparclinux
Added DaveM and sparclinux to CC.
On Thu, 6 Nov 2014, Paul E. McKenney wrote:
> On Thu, Nov 06, 2014 at 07:46:16AM -0800, Christoph Hellwig wrote:
> > Without help from Paul I can't even make sense of the message..
>
> It looks to me like the SUN4U architecture is failing to invoke
> rcu_irq_enter() on entry to the smp_call_function_single_client()
> IPI handler.
>
> And I am not seeing any sign of this in the call sequence in 3.17.
> Does the following patch help?
>
> ------------------------------------------------------------------------
>
> diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
> index 302c476413d5..971a488264ff 100644
> --- a/arch/sparc/kernel/smp_64.c
> +++ b/arch/sparc/kernel/smp_64.c
> @@ -822,7 +822,9 @@ void __irq_entry smp_call_function_client(int irq, struct pt_regs *regs)
> void __irq_entry smp_call_function_single_client(int irq, struct pt_regs *regs)
> {
> clear_softint(1 << irq);
> + irq_enter();
> generic_smp_call_function_single_interrupt();
> + irq_exit();
> }
>
> static void tsb_sync(void *info)
>
> ------------------------------------------------------------------------
It makes the RCU warning go away and the scsi controller still works.
> If there is something bad about invoking all of irq_enter() and irq_exit()
> for this handler on SPARC, perhaps this would be better:
>
> ------------------------------------------------------------------------
>
> diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
> index 302c476413d5..ce3e329c3ccc 100644
> --- a/arch/sparc/kernel/smp_64.c
> +++ b/arch/sparc/kernel/smp_64.c
> @@ -822,7 +822,9 @@ void __irq_entry smp_call_function_client(int irq, struct pt_regs *regs)
> void __irq_entry smp_call_function_single_client(int irq, struct pt_regs *regs)
> {
> clear_softint(1 << irq);
> + rcu_irq_enter();
> generic_smp_call_function_single_interrupt();
> + rcu_irq_exit();
> }
>
> static void tsb_sync(void *info)
>
> ------------------------------------------------------------------------
This works the same - no warning, everything still works.
Perhaps DaveM can tell which one is coreect or if there is any related
problem.
>
> Do either of these help?
>
> Thanx, Paul
>
> > On Thu, Nov 06, 2014 at 05:45:43PM +0200, Meelis Roos wrote:
> > > I tested a machine with multiple scsi adapters today with latest kernel
> > > and found the following warning in the logs. It is probably from QLA1040
> > > adapter initialization, full dmesg is below. Adaptec SCSI card dumps is
> > > normal on this server, it is usually there and seems to be harmless
> > > (maybe a supurious IRQ somewhere - but this should not be relevant).
> > >
> > > The message is not there for scsi_mod.use_blk_mq=0 boot.
> > >
> > > Booting 3.17.0 with scsi_mod.use_blk_mq=1 does not show this message
> > > either.
> > >
> > > [ 188.275021] ===============> > > [ 188.309351] [ INFO: suspicious RCU usage. ]
> > > [ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted
> > > [ 188.394786] -------------------------------
> > > [ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used
> > > illegally while idle!
> > > [ 188.505235]
> > > other info that might help us debug this:
> > >
> > > [ 188.554230]
> > > RCU used illegally from idle CPU!
> > > rcu_scheduler_active = 1, debug_locks = 0
> > > [ 188.637587] RCU used illegally from extended quiescent state!
> > > [ 188.690684] 3 locks held by swapper/7/0:
> > > [ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60
> > > [ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400
> > > [ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40
> > > [ 188.973043]stack backtrace:
> > > [ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > [ 189.076187] Call Trace:
> > > [ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100
> > > [ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40
> > > [ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400
> > > [ 189.252258] [000000000048554c] default_wake_function+0xc/0x20
> > > [ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80
> > > [ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40
> > > [ 189.406456] [0000000000495e08] complete+0x28/0x60
> > > [ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20
> > > [ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60
> > > [ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180
> > > [ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600
> > > [ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0
> > > [ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140
> > > [ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20
> > > [ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0
> > > [ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40
> > >
> > >
> > > Full dmesg:
> > >
> > > [ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 3.2.30 2002/10/25 14:03'
> > > [ 0.000000] PROMLIB: Root node compatible:
> > > [ 0.000000] Linux version 3.18.0-rc3-00068-g20f3963-dirty (mroos@korvits) (gcc version 4.9.1 (Debian 4.9.1-18) ) #54 SMP Thu Nov 6 14:37:34 EET 2014
> > > [ 0.000000] debug: ignoring loglevel setting.
> > > [ 0.000000] bootconsole [earlyprom0] enabled
> > > [ 0.000000] ARCH: SUN4U
> > > [ 0.000000] Ethernet address: 08:00:20:b6:ee:e2
> > > [ 0.000000] MM: PAGE_OFFSET is 0xfffff80000000000 (max_phys_bits = 40)
> > > [ 0.000000] MM: VMALLOC [0x0000000100000000 --> 0x0000060000000000]
> > > [ 0.000000] MM: VMEMMAP [0x0000060000000000 --> 0x00000c0000000000]
> > > [ 0.000000] Kernel: Using 6 locked TLB entries for main kernel image.
> > > [ 0.000000] Remapping the kernel... done.
> > > [ 0.000000] kmemleak: Kernel memory leak detector disabled
> > > [ 0.000000] OF stdout device is: /central@1f,0/fhc@0,f8800000/zs@0,902000:a
> > > [ 0.000000] PROM: Built device tree with 169763 bytes of memory.
> > > [ 0.000000] Top of RAM: 0x7fcf2000, Total RAM: 0x7f8c0000
> > > [ 0.000000] Memory hole size: 4MB
> > > [ 0.000000] Allocated 2113536 bytes for kernel page tables.
> > > [ 0.000000] Zone ranges:
> > > [ 0.000000] Normal [mem 0x00000000-0x7fcf1fff]
> > > [ 0.000000] Movable zone start for each node
> > > [ 0.000000] Early memory node ranges
> > > [ 0.000000] node 0: [mem 0x00000000-0x7f7ddfff]
> > > [ 0.000000] node 0: [mem 0x7fc00000-0x7fcd1fff]
> > > [ 0.000000] node 0: [mem 0x7fce2000-0x7fcf1fff]
> > > [ 0.000000] Initmem setup node 0 [mem 0x00000000-0x7fcf1fff]
> > > [ 0.000000] On node 0 totalpages: 261216
> > > [ 0.000000] Normal zone: 2301 pages used for memmap
> > > [ 0.000000] Normal zone: 0 pages reserved
> > > [ 0.000000] Normal zone: 261216 pages, LIFO batch:15
> > > [ 0.000000] Booting Linux...
> > > [ 0.000000] CPU CAPS: [flush,stbar,swap,muldiv,v9,mul32,div32,v8plus]
> > > [ 0.000000] CPU CAPS: [vis]
> > > [ 0.000000] PERCPU: Embedded 7 pages/cpu @fffff8007f000000 s15808 r8192 d33344 u2097152
> > > [ 0.000000] pcpu-alloc: s15808 r8192 d33344 u2097152 alloc=1*4194304
> > > [ 0.000000] pcpu-alloc: [0] 6 7
> > > [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 258915
> > > [ 0.000000] Kernel command line: root=/dev/sda2 ro debug ignore_loglevel
> > > [ 0.000000] PID hash table entries: 4096 (order: 2, 32768 bytes)
> > > [ 0.000000] Dentry cache hash table entries: 262144 (order: 8, 2097152 bytes)
> > > [ 0.000000] Inode-cache hash table entries: 131072 (order: 7, 1048576 bytes)
> > > [ 0.000000] Sorting __ex_table...
> > > [ 0.000000] Memory: 2037784K/2089728K available (4533K kernel code, 305K rwdata, 1504K rodata, 576K init, 14539K bss, 51944K reserved)
> > > [ 0.000000] Hierarchical RCU implementation.
> > > [ 0.000000] RCU lockdep checking is enabled.
> > > [ 0.000000] RCU restricting CPUs from NR_CPUS\x16 to nr_cpu_ids=8.
> > > [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf\x16, nr_cpu_ids=8
> > > [ 0.000000] NR_IRQS:2048 nr_irqs:2048 1
> > > [ 161.238391] clocksource: mult[2800000] shift[24]
> > > [ 161.277473] clockevent: mult[66666666] shift[32]
> > > [ 161.318721] Console: colour dummy device 80x25
> > > [ 161.355382] console [tty0] enabled
> > > [ 161.380218] bootconsole [earlyprom0] disabled
> > > [ 161.416696] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
> > > [ 161.416740] ... MAX_LOCKDEP_SUBCLASSES: 8
> > > [ 161.416765] ... MAX_LOCK_DEPTH: 48
> > > [ 161.416790] ... MAX_LOCKDEP_KEYS: 8191
> > > [ 161.416816] ... CLASSHASH_SIZE: 4096
> > > [ 161.416841] ... MAX_LOCKDEP_ENTRIES: 32768
> > > [ 161.416867] ... MAX_LOCKDEP_CHAINS: 65536
> > > [ 161.416892] ... CHAINHASH_SIZE: 32768
> > > [ 161.416918] memory used by lock dependency info: 8159 kB
> > > [ 161.416949] per task-struct memory footprint: 1920 bytes
> > > [ 161.416978] ------------------------
> > > [ 161.416999] | Locking API testsuite:
> > > [ 161.417019] ----------------------------------------------------------------------------
> > > [ 161.417061] | spin |wlock |rlock |mutex | wsem | rsem |
> > > [ 161.417104] --------------------------------------------------------------------------
> > > [ 161.417173] A-A deadlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.457494] A-B-B-A deadlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.495480] A-B-B-C-C-A deadlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.533653] A-B-C-A-B-C deadlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.571829] A-B-B-C-C-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.610241] A-B-C-D-B-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.648630] A-B-C-D-B-C-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.687043] double unlock: ok | ok | ok | ok | ok | ok |
> > > [ 161.724876] initialize held: ok | ok | ok | ok | ok | ok |
> > > [ 161.762661] bad unlock order: ok | ok | ok | ok | ok | ok |
> > > [ 161.800701] --------------------------------------------------------------------------
> > > [ 161.800747] recursive read-lock: | ok | | ok |
> > > [ 161.813409] recursive read-lock #2: | ok | | ok |
> > > [ 161.826070] mixed read-write-lock: | ok | | ok |
> > > [ 161.838756] mixed write-read-lock: | ok | | ok |
> > > [ 161.851441] --------------------------------------------------------------------------
> > > [ 161.851489] hard-irqs-on + irq-safe-A/12: ok | ok | ok |
> > > [ 161.870404] soft-irqs-on + irq-safe-A/12: ok | ok | ok |
> > > [ 161.889387] hard-irqs-on + irq-safe-A/21: ok | ok | ok |
> > > [ 161.908303] soft-irqs-on + irq-safe-A/21: ok | ok | ok |
> > > [ 161.927281] sirq-safe-A => hirqs-on/12: ok | ok | ok |
> > > [ 161.946218] sirq-safe-A => hirqs-on/21: ok | ok | ok |
> > > [ 161.965194] hard-safe-A + irqs-on/12: ok | ok | ok |
> > > [ 161.984110] soft-safe-A + irqs-on/12: ok | ok | ok |
> > > [ 162.003086] hard-safe-A + irqs-on/21: ok | ok | ok |
> > > [ 162.022023] soft-safe-A + irqs-on/21: ok | ok | ok |
> > > [ 162.041005] hard-safe-A + unsafe-B #1/123: ok | ok | ok |
> > > [ 162.060021] soft-safe-A + unsafe-B #1/123: ok | ok | ok |
> > > [ 162.079090] hard-safe-A + unsafe-B #1/132: ok | ok | ok |
> > > [ 162.098089] soft-safe-A + unsafe-B #1/132: ok | ok | ok |
> > > [ 162.117160] hard-safe-A + unsafe-B #1/213: ok | ok | ok |
> > > [ 162.136184] soft-safe-A + unsafe-B #1/213: ok | ok | ok |
> > > [ 162.155258] hard-safe-A + unsafe-B #1/231: ok | ok | ok |
> > > [ 162.174253] soft-safe-A + unsafe-B #1/231: ok | ok | ok |
> > > [ 162.193316] hard-safe-A + unsafe-B #1/312: ok | ok | ok |
> > > [ 162.212268] soft-safe-A + unsafe-B #1/312: ok | ok | ok |
> > > [ 162.231264] hard-safe-A + unsafe-B #1/321: ok | ok | ok |
> > > [ 162.250265] soft-safe-A + unsafe-B #1/321: ok | ok | ok |
> > > [ 162.269312] hard-safe-A + unsafe-B #2/123: ok | ok | ok |
> > > [ 162.288321] soft-safe-A + unsafe-B #2/123: ok | ok | ok |
> > > [ 162.307393] hard-safe-A + unsafe-B #2/132: ok | ok | ok |
> > > [ 162.326395] soft-safe-A + unsafe-B #2/132: ok | ok | ok |
> > > [ 162.345469] hard-safe-A + unsafe-B #2/213: ok | ok | ok |
> > > [ 162.364485] soft-safe-A + unsafe-B #2/213: ok | ok | ok |
> > > [ 162.383569] hard-safe-A + unsafe-B #2/231: ok | ok | ok |
> > > [ 162.402578] soft-safe-A + unsafe-B #2/231: ok | ok | ok |
> > > [ 162.421652] hard-safe-A + unsafe-B #2/312: ok | ok | ok |
> > > [ 162.440662] soft-safe-A + unsafe-B #2/312: ok | ok | ok |
> > > [ 162.459750] hard-safe-A + unsafe-B #2/321: ok | ok | ok |
> > > [ 162.478756] soft-safe-A + unsafe-B #2/321: ok | ok | ok |
> > > [ 162.497822] hard-irq lock-inversion/123: ok | ok | ok |
> > > [ 162.516832] soft-irq lock-inversion/123: ok | ok | ok |
> > > [ 162.535924] hard-irq lock-inversion/132: ok | ok | ok |
> > > [ 162.554942] soft-irq lock-inversion/132: ok | ok | ok |
> > > [ 162.574036] hard-irq lock-inversion/213: ok | ok | ok |
> > > [ 162.593071] soft-irq lock-inversion/213: ok | ok | ok |
> > > [ 162.612151] hard-irq lock-inversion/231: ok | ok | ok |
> > > [ 162.631163] soft-irq lock-inversion/231: ok | ok | ok |
> > > [ 162.650245] hard-irq lock-inversion/312: ok | ok | ok |
> > > [ 162.669272] soft-irq lock-inversion/312: ok | ok | ok |
> > > [ 162.688368] hard-irq lock-inversion/321: ok | ok | ok |
> > > [ 162.707370] soft-irq lock-inversion/321: ok | ok | ok |
> > > [ 162.726457] hard-irq read-recursion/123: ok |
> > > [ 162.732811] soft-irq read-recursion/123: ok |
> > > [ 162.739223] hard-irq read-recursion/132: ok |
> > > [ 162.745568] soft-irq read-recursion/132: ok |
> > > [ 162.751969] hard-irq read-recursion/213: ok |
> > > [ 162.758313] soft-irq read-recursion/213: ok |
> > > [ 162.764715] hard-irq read-recursion/231: ok |
> > > [ 162.771062] soft-irq read-recursion/231: ok |
> > > [ 162.777472] hard-irq read-recursion/312: ok |
> > > [ 162.783817] soft-irq read-recursion/312: ok |
> > > [ 162.790220] hard-irq read-recursion/321: ok |
> > > [ 162.796571] soft-irq read-recursion/321: ok |
> > > [ 162.802972] --------------------------------------------------------------------------
> > > [ 162.803016] | Wound/wait tests |
> > > [ 162.803039] ---------------------
> > > [ 162.803064] ww api failures: ok | ok | ok |
> > > [ 162.822112] ww contexts mixing: ok | ok |
> > > [ 162.834785] finishing ww context: ok | ok | ok | ok |
> > > [ 162.860095] locking mismatches: ok | ok | ok |
> > > [ 162.879128] EDEADLK handling: ok | ok | ok | ok | ok | ok | ok | ok | ok | ok |
> > > [ 162.942686] spinlock nest unlocked: ok |
> > > [ 162.949005] -----------------------------------------------------
> > > [ 162.949044] |block | try |context|
> > > [ 162.949082] -----------------------------------------------------
> > > [ 162.949121] context: ok | ok | ok |
> > > [ 162.968211] try: ok | ok | ok |
> > > [ 162.987181] block: ok | ok | ok |
> > > [ 163.006186] spinlock: ok | ok | ok |
> > > [ 163.025283] -------------------------------------------------------
> > > [ 163.025322] Good, all 253 testcases passed! |
> > > [ 163.025349] ---------------------------------
> > > [ 163.027126] ODEBUG: selftest passed
> > > [ 163.027345] kmemleak: Early log buffer exceeded (3329), please increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE
> > > [ 163.169263] Calibrating delay using timer specific routine.. 804.17 BogoMIPS (lpj@20880)
> > > [ 163.169341] pid_max: default: 32768 minimum: 301
> > > [ 163.170354] Mount-cache hash table entries: 4096 (order: 2, 32768 bytes)
> > > [ 163.170426] Mountpoint-cache hash table entries: 4096 (order: 2, 32768 bytes)
> > > [ 163.191280] CPU 7: synchronized TICK with master CPU (last diff -8 cycles, maxerr 677 cycles)
> > > [ 163.191904] Brought up 2 CPUs
> > > [ 163.196096] devtmpfs: initialized
> > > [ 163.199102] Performance events: No support for PMU type 'ultra12'
> > > [ 163.282260] atomic64_test: passed
> > > [ 163.284207] kworker/u4:0 (20) used greatest stack depth: 8216 bytes left
> > > [ 163.300285] device-tree: Duplicate name in base, renamed to "fhc#1"
> > > [ 163.307412] device-tree: Duplicate name in base, renamed to "counter-timer#1"
> > > [ 163.312131] device-tree: Duplicate name in base, renamed to "fhc#2"
> > > [ 163.314228] device-tree: Duplicate name in base, renamed to "counter-timer#2"
> > > [ 163.318010] device-tree: Duplicate name in base, renamed to "counter-timer#3"
> > > [ 163.323548] device-tree: Duplicate name in base, renamed to "fhc#3"
> > > [ 163.325699] device-tree: Duplicate name in base, renamed to "counter-timer#4"
> > > [ 163.330745] device-tree: Duplicate name in base, renamed to "counter-timer#5"
> > > [ 163.333752] NET: Registered protocol family 16
> > > [ 163.344321] kworker/u4:0 (31) used greatest stack depth: 7976 bytes left
> > > [ 163.347152] kworker/u4:0 (34) used greatest stack depth: 7896 bytes left
> > > [ 163.390763] SYSIO: UPA portID ffffffff, at 000001c400000000
> > > [ 163.400388] SYSIO: UPA portID ffffffff, at 000001c600000000
> > > [ 163.410018] SYSIO: UPA portID ffffffff, at 000001d400000000
> > > [ 163.420198] SYSIO: UPA portID ffffffff, at 000001d600000000
> > > [ 163.439052] /pci@e,4000: PCI IO[1dc02010000] MEM[1dd80000000]
> > > [ 163.439288] /pci@e,4000: PSYCHO PCI Bus Module ver[4:0]
> > > [ 163.439377] PCI: Scanning PBM /pci@e,4000
> > > [ 163.440634] psycho f01bf7bc: PCI host bridge to bus 0000:00
> > > [ 163.440713] pci_bus 0000:00: root bus resource [io 0x1dc02010000-0x1dc0201ffff] (bus address [0x0000-0xffff])
> > > [ 163.440818] pci_bus 0000:00: root bus resource [mem 0x1dd80000000-0x1ddffffffff] (bus address [0x00000000-0x7fffffff])
> > > [ 163.440929] pci_bus 0000:00: root bus resource [bus 00]
> > > [ 163.445838] /pci@e,2000: PCI IO[1dc02000000] MEM[1dd00000000]
> > > [ 163.445927] /pci@e,2000: PSYCHO PCI Bus Module ver[4:0]
> > > [ 163.445984] PCI: Scanning PBM /pci@e,2000
> > > [ 163.446800] psycho f01c88e0: PCI host bridge to bus 0001:80
> > > [ 163.446876] pci_bus 0001:80: root bus resource [io 0x1dc02000000-0x1dc0200ffff] (bus address [0x0000-0xffff])
> > > [ 163.446983] pci_bus 0001:80: root bus resource [mem 0x1dd00000000-0x1dd7fffffff] (bus address [0x00000000-0x7fffffff])
> > > [ 163.447088] pci_bus 0001:80: root bus resource [bus 80]
> > > [ 163.457405] /pci@f,4000: PCI IO[1de02010000] MEM[1df80000000]
> > > [ 163.457494] /pci@f,4000: PSYCHO PCI Bus Module ver[4:0]
> > > [ 163.457549] PCI: Scanning PBM /pci@f,4000
> > > [ 163.458367] psycho f01ca118: PCI host bridge to bus 0002:00
> > > [ 163.458443] pci_bus 0002:00: root bus resource [io 0x1de02010000-0x1de0201ffff] (bus address [0x0000-0xffff])
> > > [ 163.458547] pci_bus 0002:00: root bus resource [mem 0x1df80000000-0x1dfffffffff] (bus address [0x00000000-0x7fffffff])
> > > [ 163.458653] pci_bus 0002:00: root bus resource [bus 00]
> > > [ 163.461719] /pci@f,2000: PCI IO[1de02000000] MEM[1df00000000]
> > > [ 163.461804] /pci@f,2000: PSYCHO PCI Bus Module ver[4:0]
> > > [ 163.461859] PCI: Scanning PBM /pci@f,2000
> > > [ 163.462668] psycho f01d320c: PCI host bridge to bus 0003:80
> > > [ 163.462743] pci_bus 0003:80: root bus resource [io 0x1de02000000-0x1de0200ffff] (bus address [0x0000-0xffff])
> > > [ 163.462855] pci_bus 0003:80: root bus resource [mem 0x1df00000000-0x1df7fffffff] (bus address [0x00000000-0x7fffffff])
> > > [ 163.462964] pci_bus 0003:80: root bus resource [bus 80]
> > > [ 163.580345] vgaarb: loaded
> > > [ 163.584298] SCSI subsystem initialized
> > > [ 163.592449] /central/fhc@0,f8800000/eeprom@0,908000: Mostek regs at 0x1fff8908000
> > > [ 163.595898] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e] (Central)
> > > [ 163.596622] fhc: Board #3, Version[1] PartID[fa0] Manuf[3e] (JTAG Master)
> > > [ 163.597384] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e]
> > > [ 163.598197] fhc: Board #5, Version[1] PartID[fa0] Manuf[3e]
> > > [ 163.598978] fhc: Board #7, Version[1] PartID[fa0] Manuf[3e]
> > > [ 163.600178] clock_board: Detected 5 slot Enterprise system.
> > > [ 163.690823] DMA-API: preallocated 32768 debug entries
> > > [ 163.690902] DMA-API: debugging enabled by kernel config
> > > [ 163.693159] Switched to clocksource tick
> > > [ 163.703829] kworker/u4:0 (280) used greatest stack depth: 7752 bytes left
> > > [ 163.754938] NET: Registered protocol family 2
> > > [ 163.757716] TCP established hash table entries: 16384 (order: 4, 131072 bytes)
> > > [ 163.758687] TCP bind hash table entries: 16384 (order: 7, 1048576 bytes)
> > > [ 163.768861] TCP: Hash tables configured (established 16384 bind 16384)
> > > [ 163.769822] TCP: reno registered
> > > [ 163.769975] UDP hash table entries: 1024 (order: 4, 163840 bytes)
> > > [ 163.771566] UDP-Lite hash table entries: 1024 (order: 4, 163840 bytes)
> > > [ 163.775400] NET: Registered protocol family 1
> > > [ 163.775741] PCI: CLS 0 bytes, default 64
> > > [ 163.784319] futex hash table entries: 512 (order: 3, 65536 bytes)
> > > [ 163.784865] ==[ backtrace testing ]=====> > > [ 163.784908] Testing a backtrace from process context.
> > > [ 163.784952] The following trace is a kernel self test and not a bug!
> > > [ 163.785015] CPU: 6 PID: 1 Comm: swapper/6 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > [ 163.785076] Call Trace:
> > > [ 163.785122] [00000000004cd80c] backtrace_regression_test+0x2c/0x100
> > > [ 163.785183] [0000000000426ea4] do_one_initcall+0xe4/0x1e0
> > > [ 163.785250] [0000000000a40b44] kernel_init_freeable+0x120/0x1d0
> > > [ 163.785326] [0000000000865a84] kernel_init+0x4/0x100
> > > [ 163.785389] [0000000000406104] ret_from_fork+0x1c/0x2c
> > > [ 163.785436] [0000000000000000] (null)
> > > [ 163.785477] Testing a backtrace from irq context.
> > > [ 163.785519] The following trace is a kernel self test and not a bug!
> > > [ 163.786004] CPU: 6 PID: 3 Comm: ksoftirqd/6 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > [ 163.786068] Call Trace:
> > > [ 163.786116] [00000000004cd7c4] backtrace_test_irq_callback+0x4/0x20
> > > [ 163.786183] [000000000045f278] tasklet_action+0x98/0x120
> > > [ 163.786238] [000000000045f3f0] __do_softirq+0xf0/0x240
> > > [ 163.786294] [000000000045f568] run_ksoftirqd+0x28/0x80
> > > [ 163.786373] [000000000047e3e4] smpboot_thread_fn+0x244/0x280
> > > [ 163.786440] [0000000000479ef0] kthread+0xb0/0xe0
> > > [ 163.786496] [0000000000406104] ret_from_fork+0x1c/0x2c
> > > [ 163.786546] [0000000000000000] (null)
> > > [ 163.786707] Testing a saved backtrace.
> > > [ 163.786753] The following trace is a kernel self test and not a bug!
> > > [ 163.786810] [<00000000004cd8a8>] backtrace_regression_test+0xc8/0x100
> > > [ 163.786888] [<0000000000426ea4>] do_one_initcall+0xe4/0x1e0
> > > [ 163.786952] [<0000000000a40b44>] kernel_init_freeable+0x120/0x1d0
> > > [ 163.787022] [<0000000000865a84>] kernel_init+0x4/0x100
> > > [ 163.787088] [<0000000000406104>] ret_from_fork+0x1c/0x2c
> > > [ 163.787153] [< (null)>] (null)
> > > [ 163.787207] ==[ end of backtrace testing ]==
> > > [ 163.787332] audit: initializing netlink subsys (disabled)
> > > [ 163.787886] audit: type 00 audit(2.050:1): initialized
> > > [ 163.791649] HugeTLB registered 8 MB page size, pre-allocated 0 pages
> > > [ 163.797716] msgmni has been set to 3980
> > > [ 163.803398] io scheduler noop registered
> > > [ 163.803651] io scheduler cfq registered (default)
> > > [ 163.803717] start plist test
> > > [ 163.826582] end plist test
> > > [ 163.831561] test_string_helpers: Running tests...
> > > [ 164.044577] zs f005de3c: ttyS0 at MMIO 0x1fff8902000 (irq = 2, base_baud = 307200) is a zs (ESCC)
> > > [ 164.044724] Console: ttyS0 (SunZilog zs0)
> > > [ 179.468351] console [ttyS0] enabled
> > > [ 179.496405] zs f005de3c: ttyS1 at MMIO 0x1fff8902004 (irq = 2, base_baud = 307200) is a zs (ESCC)
> > > [ 179.795321] f005df14: Keyboard at MMIO 0x1fff8904000 (irq = 2) is a zs
> > > [ 179.855846] f005df14: Mouse at MMIO 0x1fff8904004 (irq = 2) is a zs
> > > [ 179.954009] loop: module loaded
> > > [ 179.975578] PCI: Enabling device: (0003:80:02.0), cmd 3
> > > [ 185.152853] scsi0: Missing case in ahd_handle_scsiint. status = 0
> > > [ 185.208135] >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<
> > > scsi0: Dumping Card State at program address 0x0 Mode 0x33
> > > [ 185.334228] Card was paused
> > > [ 185.351888] INTSTAT[0x8]:(SCSIINT) SELOID[0x0] SELID[0x0] HS_MAILBOX[0x0]
> > > [ 185.418562] INTCTL[0x0] SEQINTSTAT[0x0] SAVED_MODE[0x25] DFFSTAT[0x33]:(CURRFIFO_NONE|FIFO0FREE|FIFO1FREE)
> > > [ 185.519625] SCSISIGI[0x0]:(P_DATAOUT) SCSIPHASE[0x0] SCSIBUS[0x0]
> > > [ 185.577970] LASTPHASE[0x1]:(P_DATAOUT|P_BUSFREE) SCSISEQ0[0x0]
> > > [ 185.633186] SCSISEQ1[0x12]:(ENAUTOATNP|ENRSELI) SEQCTL0[0x0] SEQINTCTL[0x0]
> > > [ 185.701952] SEQ_FLAGS[0x0] SEQ_FLAGS2[0x0] QFREEZE_COUNT[0x0]
> > > [ 185.756130] KERNEL_QFREEZE_COUNT[0x0] MK_MESSAGE_SCB[0xff00] MK_MESSAGE_SCSIID[0xff]
> > > [ 185.834268] SSTAT0[0x0] SSTAT1[0x0] SSTAT2[0x0] SSTAT3[0x0] PERRDIAG[0x0]
> > > [ 185.900952] SIMODE1[0xa4]:(ENSCSIPERR|ENSCSIRST|ENSELTIMO) LQISTAT0[0x0]
> > > [ 185.966586] LQISTAT1[0x0] LQISTAT2[0x0] LQOSTAT0[0x0] LQOSTAT1[0x0]
> > > [ 186.027015] LQOSTAT2[0x0]
> > > [ 186.043701]
> > > SCB Count = 8 CMDS_PENDING = 0 LASTSCB 0xffff CURRSCB 0x0 NEXTSCB 0x0
> > > [ 186.119786] qinstart = 0 qinfifonext = 0
> > > QINFIFO:
> > > WAITING_TID_QUEUES:
> > > [ 186.183326] Pending list:
> > > Total 0
> > > [ 186.208314] Kernel Free SCB list: 7 6 5 4 3 2 1 0
> > > [ 186.249973] Sequencer Complete DMA-inprog list:
> > > [ 186.289562] Sequencer Complete list:
> > > [ 186.317694] Sequencer DMA-Up and Complete list:
> > > [ 186.357284] Sequencer On QFreeze and Complete list:
> > > [ 186.401059]
> > >
> > > scsi0: FIFO0 Free, LONGJMP = 0x803b, SCB 0x0
> > > [ 186.454230] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
> > > [ 186.544821] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
> > > [ 186.622965] SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
> > > [ 186.689642] SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
> > > [ 186.766758] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
> > >
> > > scsi0: FIFO1 Free, LONGJMP = 0x80bc, SCB 0x0
> > > [ 186.878272] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
> > > [ 186.968863] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
> > > [ 187.047006] SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
> > > [ 187.113688] SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
> > > [ 187.190796] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
> > > LQIN: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
> > > [ 187.342907] scsi0: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x52
> > > [ 187.403351] scsi0: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x0
> > > [ 187.449192] scsi0: SAVED_SCSIID = 0x0 SAVED_LUN = 0x0
> > >
> > > [ 187.496052] SIMODE0[0x6c]:(ENOVERRUN|ENIOERR|ENSELDI|ENSELDO)
> > > [ 187.550231] CCSCBCTL[0x0]
> > > [ 187.566913] scsi0: REG0 = 0x45d1, SINDEX = 0x0, DINDEX = 0x0
> > > [ 187.620062] scsi0: SCBPTR = 0x1ff, SCB_NEXT = 0xff00, SCB_NEXT2 = 0x0
> > > [ 187.684665] CDB ff 1 0 0 0 0
> > > [ 187.703390] STACK: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
> > > <<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>
> > > [ 187.806958] scsi host0: Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 3.0
> > > <Adaptec 29320ALP PCIx Ultra320 SCSI adapter>
> > > aic7901: Ultra320 Wide Channel A, SCSI Id=7, PCI 33 or 66MHz, 512 SCBs
> > > [ 188.016407] qla1280: QLA1040 found on PCI bus 0, dev 3
> > > [ 188.060231] PCI: Enabling device: (0002:00:03.0), cmd 7
> > >
> > > [ 188.275021] ===============> > > [ 188.309351] [ INFO: suspicious RCU usage. ]
> > > [ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted
> > > [ 188.394786] -------------------------------
> > > [ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used illegally while idle!
> > > [ 188.505235]
> > > other info that might help us debug this:
> > >
> > > [ 188.554230]
> > > RCU used illegally from idle CPU!
> > > rcu_scheduler_active = 1, debug_locks = 0
> > > [ 188.637587] RCU used illegally from extended quiescent state!
> > > [ 188.690684] 3 locks held by swapper/7/0:
> > > [ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60
> > > [ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400
> > > [ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40
> > > [ 188.973043]
> > > stack backtrace:
> > > [ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > [ 189.076187] Call Trace:
> > > [ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100
> > > [ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40
> > > [ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400
> > > [ 189.252258] [000000000048554c] default_wake_function+0xc/0x20
> > > [ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80
> > > [ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40
> > > [ 189.406456] [0000000000495e08] complete+0x28/0x60
> > > [ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20
> > > [ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60
> > > [ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180
> > > [ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600
> > > [ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0
> > > [ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140
> > > [ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20
> > > [ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0
> > > [ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40
> > > [ 190.269728] random: nonblocking pool is initialized
> > > [ 190.828808] scsi(1:0): Resetting SCSI BUS
> > > [ 193.862671] scsi host1: QLogic QLA1040 PCI to SCSI Host Adapter
> > > Firmware version: 7.65.06, Driver version 3.27.1
> > > [ 193.976290] blk-mq: reduced tag depth to 10240
> > > [ 194.037930] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 8.07.00.16-k.
> > > [ 194.118405] PCI: Enabling device: (0001:80:02.0), cmd 3
> > > [ 194.165280] qla2xxx [0001:80:02.0]-001d: : Found an ISP2200 irq 49 iobase 0x000001dd00002000.
> > > [ 194.353211] qla2xxx 0001:80:02.0: Direct firmware load for ql2200_fw.bin failed with error -2
> > > [ 194.437839] qla2xxx 0001:80:02.0: Falling back to user helper
> > > [ 194.491932] scsi 1:0:2:0: Direct-Access IBM DDYS-T18350M S96H PQ: 0 ANSI: 3
> > > [ 194.573022] scsi(1:0:2:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > [ 194.823272] scsi 1:0:4:0: Direct-Access IBM DDYS-T18350M S80D PQ: 0 ANSI: 3
> > > [ 194.903416] scsi(1:0:4:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > [ 195.662569] scsi 1:0:10:0: Direct-Access HP 9.10GB A 80-6331 PQ: 0 ANSI: 2
> > > [ 195.743713] scsi(1:0:10:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > [ 195.830214] scsi 1:0:11:0: Direct-Access IBM DDRS-34560D DC1B PQ: 0 ANSI: 2
> > > [ 195.911336] scsi(1:0:11:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > [ 196.006929] scsi 1:0:12:0: Direct-Access HP 4.26GB A 80-0430 0430 PQ: 0 ANSI: 2
> > > [ 196.087903] scsi(1:0:12:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > [ 196.187208] scsi 1:0:13:0: Direct-Access HP 2.13GB A 80-0430 0430 PQ: 0 ANSI: 2
> > > [ 196.268525] scsi(1:0:13:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > [ 254.692919] qla2xxx [0001:80:02.0]-0063:2: Failed to load firmware image (ql2200_fw.bin).
> > > [ 254.773218] qla2xxx [0001:80:02.0]-0083:2: Fimware image unavailable.
> > > [ 254.834679] qla2xxx [0001:80:02.0]-0084:2: Firmware images can be retrieved from: http://ldriver.qlogic.com/firmware/.
> > > [ 254.947216] qla2xxx [0001:80:02.0]-00cf:2: Setup chip ****FAILED****.
> > > [ 255.008657] qla2xxx [0001:80:02.0]-00d6:2: Failed to initialize adapter - Adapter flags 2.
> > > [ 255.097006] sunhme.c:v3.10 August 26, 2008 David S. Miller (davem@davemloft.net)
> > > [ 255.170460] eth0: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:b6:ee:e2
> > > [ 255.235445] sd 1:0:4:0: [sdb] 35843670 512-byte logical blocks: (18.3 GB/17.0 GiB)
> > > [ 255.237573] eth1: Quattro HME slot 0 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:94
> > > [ 255.239977] eth2: Quattro HME slot 1 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:95
> > > [ 255.242388] eth3: Quattro HME slot 2 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:96
> > > [ 255.244859] eth4: Quattro HME slot 3 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:97
> > > [ 255.247283] eth5: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:b6:ee:e2
> > > [ 255.247840] PCI: Enabling device: (0000:00:01.1), cmd 2
> > > [ 255.250196] eth6: HAPPY MEAL (PCI/CheerIO) 10/100BaseT Ethernet 08:00:20:b6:ee:e2
> > > [ 255.251312] sd 1:0:2:0: [sda] 35843670 512-byte logical blocks: (18.3 GB/17.0 GiB)
> > > [ 255.310326] sd 1:0:2:0: [sda] Write Protect is off
> > > [ 255.310343] sd 1:0:2:0: [sda] Mode Sense: cb 00 00 08
> > > [ 255.310591] sd 1:0:10:0: [sdc] 17773524 512-byte logical blocks: (9.10 GB/8.47 GiB)
> > > [ 255.310697] sd 1:0:11:0: [sdd] 8925000 512-byte logical blocks: (4.56 GB/4.25 GiB)
> > > [ 255.311960] mousedev: PS/2 mouse device common for all mice
> > > [ 255.315824] rtc-m48t59 rtc-m48t59.0: rtc core: registered m48t59 as rtc0
> > > [ 255.317082] TCP: cubic registered
> > > [ 255.317108] NET: Registered protocol family 17
> > > [ 255.318580] registered taskstats version 1
> > > [ 255.385635] sd 1:0:12:0: [sde] 8330543 512-byte logical blocks: (4.26 GB/3.97 GiB)
> > > [ 255.385792] sd 1:0:10:0: [sdc] Write Protect is off
> > > [ 255.385809] sd 1:0:10:0: [sdc] Mode Sense: 9f 00 10 08
> > > [ 255.385905] sd 1:0:11:0: [sdd] Write Protect is off
> > > [ 255.385921] sd 1:0:11:0: [sdd] Mode Sense: b9 00 00 08
> > > [ 255.460208] rtc-m48t59 rtc-m48t59.0: setting system clock to 2014-11-06 14:44:49 UTC (1415285089)
> > > [ 255.460593] sd 1:0:2:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > > [ 255.460897] sd 1:0:12:0: [sde] Write Protect is off
> > > [ 255.460913] sd 1:0:12:0: [sde] Mode Sense: 9f 00 10 08
> > > [ 255.535967] sd 1:0:10:0: [sdc] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > > [ 255.536140] sd 1:0:13:0: [sdf] 4165272 512-byte logical blocks: (2.13 GB/1.98 GiB)
> > > [ 255.536319] sd 1:0:11:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > > [ 255.611389] sd 1:0:12:0: [sde] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > > [ 255.611526] sd 1:0:13:0: [sdf] Write Protect is off
> > > [ 255.611542] sd 1:0:13:0: [sdf] Mode Sense: 9f 00 10 08
> > > [ 255.724337] sd 1:0:13:0: [sdf] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > > [ 255.960802] sda: sda1 sda2 sda3 sda4
> > > [ 256.036886] sdd: unknown partition table
> > > [ 256.038024] sdc: unknown partition table
> > > [ 256.161971] sde: unknown partition table
> > > [ 256.226521] sdf: unknown partition table
> > > [ 256.287571] sd 1:0:2:0: [sda] Attached SCSI disk
> > > [ 256.320837] sd 1:0:11:0: [sdd] Attached SCSI disk
> > > [ 256.321195] sd 1:0:10:0: [sdc] Attached SCSI disk
> > > [ 256.438589] sd 1:0:12:0: [sde] Attached SCSI disk
> > > [ 256.484470] sd 1:0:13:0: [sdf] Attached SCSI disk
> > > [ 257.730003] sd 1:0:4:0: [sdb] Write Protect is off
> > > [ 257.769724] sd 1:0:4:0: [sdb] Mode Sense: cb 00 00 08
> > > [ 257.816196] sd 1:0:4:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > > [ 257.932380] sdb: unknown partition table
> > > [ 257.967850] sd 1:0:4:0: [sdb] Attached SCSI disk
> > > [ 258.009691] EXT4-fs (sda2): mounting ext3 file system using the ext4 subsystem
> > > [ 258.103029] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
> > > [ 258.177139] VFS: Mounted root (ext3 filesystem) readonly on device 8:2.
> > > [ 258.268770] devtmpfs: mounted
> > > [ 259.504165] stty (523) used greatest stack depth: 5544 bytes left
> > > [ 261.465793] systemd-udevd[610]: starting version 215
> > > [ 262.297628] hme f009fba8 eth7: renamed from eth2
> > > [ 262.430354] systemd-udevd[634]: renamed network interface eth2 to eth7
> > > [ 262.430471] hme f0099bf4 eth9: renamed from eth1
> > > [ 262.553566] systemd-udevd[648]: renamed network interface eth1 to eth9
> > > [ 262.633511] hme f008d070 eth1: renamed from eth0
> > > [ 262.697674] hwclock (658) used greatest stack depth: 4168 bytes left
> > > [ 262.773763] hme f00ab960 eth8: renamed from eth4
> > > [ 262.873209] systemd-udevd[635]: renamed network interface eth0 to eth1
> > > [ 262.918444] hme 0000:00:01.1 eth0: renamed from eth6
> > > [ 262.918716] systemd-udevd[640]: renamed network interface eth4 to eth8
> > > [ 263.053804] systemd-udevd[643]: renamed network interface eth6 to eth0
> > > [ 263.114350] hme f01673a8 eth2: renamed from eth5
> > > [ 263.192734] hme f00a5a84 eth10: renamed from eth3
> > > [ 263.238837] systemd-udevd[641]: renamed network interface eth5 to eth2
> > > [ 263.355961] systemd-udevd[639]: renamed network interface eth3 to eth10
> > > [ 267.436399] Adding 787176k swap on /dev/sda4. Priority:-1 extents:1 across:787176k
> > > [ 267.775195] EXT4-fs (sda2): re-mounted. Opts: (null)
> > > [ 268.309702] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
> > > [ 272.239364] EXT4-fs (sda1): mounting ext3 file system using the ext4 subsystem
> > > [ 272.321644] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
> > > [ 280.082651] eth0: Link is up using internal transceiver at 100Mb/s, Full Duplex.
> > > [ 284.153738] basename (1686) used greatest stack depth: 3752 bytes left
> > >
> > > --
> > > Meelis Roos (mroos@linux.ee)
> > ---end quoted text---
> >
> >
>
>
--
Meelis Roos (mroos@ut.ee) http://www.cs.ut.ee/~mroos/
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: blk_mq: suspicious RCU usage, rcu_read_lock() used illegally while idle!
2014-11-07 10:50 ` Meelis Roos
@ 2014-11-07 15:06 ` Paul E. McKenney
-1 siblings, 0 replies; 11+ messages in thread
From: Paul E. McKenney @ 2014-11-07 15:06 UTC (permalink / raw)
To: Meelis Roos
Cc: Christoph Hellwig, linux-scsi, Jens Axboe, David Miller, sparclinux
On Fri, Nov 07, 2014 at 12:50:02PM +0200, Meelis Roos wrote:
> Added DaveM and sparclinux to CC.
>
> On Thu, 6 Nov 2014, Paul E. McKenney wrote:
> > On Thu, Nov 06, 2014 at 07:46:16AM -0800, Christoph Hellwig wrote:
> > > Without help from Paul I can't even make sense of the message..
> >
> > It looks to me like the SUN4U architecture is failing to invoke
> > rcu_irq_enter() on entry to the smp_call_function_single_client()
> > IPI handler.
> >
> > And I am not seeing any sign of this in the call sequence in 3.17.
> > Does the following patch help?
> >
> > ------------------------------------------------------------------------
> >
> > diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
> > index 302c476413d5..971a488264ff 100644
> > --- a/arch/sparc/kernel/smp_64.c
> > +++ b/arch/sparc/kernel/smp_64.c
> > @@ -822,7 +822,9 @@ void __irq_entry smp_call_function_client(int irq, struct pt_regs *regs)
> > void __irq_entry smp_call_function_single_client(int irq, struct pt_regs *regs)
> > {
> > clear_softint(1 << irq);
> > + irq_enter();
> > generic_smp_call_function_single_interrupt();
> > + irq_exit();
> > }
> >
> > static void tsb_sync(void *info)
> >
> > ------------------------------------------------------------------------
>
> It makes the RCU warning go away and the scsi controller still works.
Woo-hoo!!! ;-)
> > If there is something bad about invoking all of irq_enter() and irq_exit()
> > for this handler on SPARC, perhaps this would be better:
> >
> > ------------------------------------------------------------------------
> >
> > diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
> > index 302c476413d5..ce3e329c3ccc 100644
> > --- a/arch/sparc/kernel/smp_64.c
> > +++ b/arch/sparc/kernel/smp_64.c
> > @@ -822,7 +822,9 @@ void __irq_entry smp_call_function_client(int irq, struct pt_regs *regs)
> > void __irq_entry smp_call_function_single_client(int irq, struct pt_regs *regs)
> > {
> > clear_softint(1 << irq);
> > + rcu_irq_enter();
> > generic_smp_call_function_single_interrupt();
> > + rcu_irq_exit();
> > }
> >
> > static void tsb_sync(void *info)
> >
> > ------------------------------------------------------------------------
>
>
> This works the same - no warning, everything still works.
Woo-hoo two!!! ;-)
> Perhaps DaveM can tell which one is coreect or if there is any related
> problem.
Happy to push either of them along, if appropriate.
Thanx, Paul
> > Do either of these help?
> >
> > Thanx, Paul
> >
> > > On Thu, Nov 06, 2014 at 05:45:43PM +0200, Meelis Roos wrote:
> > > > I tested a machine with multiple scsi adapters today with latest kernel
> > > > and found the following warning in the logs. It is probably from QLA1040
> > > > adapter initialization, full dmesg is below. Adaptec SCSI card dumps is
> > > > normal on this server, it is usually there and seems to be harmless
> > > > (maybe a supurious IRQ somewhere - but this should not be relevant).
> > > >
> > > > The message is not there for scsi_mod.use_blk_mq=0 boot.
> > > >
> > > > Booting 3.17.0 with scsi_mod.use_blk_mq=1 does not show this message
> > > > either.
> > > >
> > > > [ 188.275021] ===============================
> > > > [ 188.309351] [ INFO: suspicious RCU usage. ]
> > > > [ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted
> > > > [ 188.394786] -------------------------------
> > > > [ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used
> > > > illegally while idle!
> > > > [ 188.505235]
> > > > other info that might help us debug this:
> > > >
> > > > [ 188.554230]
> > > > RCU used illegally from idle CPU!
> > > > rcu_scheduler_active = 1, debug_locks = 0
> > > > [ 188.637587] RCU used illegally from extended quiescent state!
> > > > [ 188.690684] 3 locks held by swapper/7/0:
> > > > [ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60
> > > > [ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400
> > > > [ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40
> > > > [ 188.973043]stack backtrace:
> > > > [ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > > [ 189.076187] Call Trace:
> > > > [ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100
> > > > [ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40
> > > > [ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400
> > > > [ 189.252258] [000000000048554c] default_wake_function+0xc/0x20
> > > > [ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80
> > > > [ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40
> > > > [ 189.406456] [0000000000495e08] complete+0x28/0x60
> > > > [ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20
> > > > [ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60
> > > > [ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180
> > > > [ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600
> > > > [ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0
> > > > [ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140
> > > > [ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20
> > > > [ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0
> > > > [ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40
> > > >
> > > >
> > > > Full dmesg:
> > > >
> > > > [ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 3.2.30 2002/10/25 14:03'
> > > > [ 0.000000] PROMLIB: Root node compatible:
> > > > [ 0.000000] Linux version 3.18.0-rc3-00068-g20f3963-dirty (mroos@korvits) (gcc version 4.9.1 (Debian 4.9.1-18) ) #54 SMP Thu Nov 6 14:37:34 EET 2014
> > > > [ 0.000000] debug: ignoring loglevel setting.
> > > > [ 0.000000] bootconsole [earlyprom0] enabled
> > > > [ 0.000000] ARCH: SUN4U
> > > > [ 0.000000] Ethernet address: 08:00:20:b6:ee:e2
> > > > [ 0.000000] MM: PAGE_OFFSET is 0xfffff80000000000 (max_phys_bits == 40)
> > > > [ 0.000000] MM: VMALLOC [0x0000000100000000 --> 0x0000060000000000]
> > > > [ 0.000000] MM: VMEMMAP [0x0000060000000000 --> 0x00000c0000000000]
> > > > [ 0.000000] Kernel: Using 6 locked TLB entries for main kernel image.
> > > > [ 0.000000] Remapping the kernel... done.
> > > > [ 0.000000] kmemleak: Kernel memory leak detector disabled
> > > > [ 0.000000] OF stdout device is: /central@1f,0/fhc@0,f8800000/zs@0,902000:a
> > > > [ 0.000000] PROM: Built device tree with 169763 bytes of memory.
> > > > [ 0.000000] Top of RAM: 0x7fcf2000, Total RAM: 0x7f8c0000
> > > > [ 0.000000] Memory hole size: 4MB
> > > > [ 0.000000] Allocated 2113536 bytes for kernel page tables.
> > > > [ 0.000000] Zone ranges:
> > > > [ 0.000000] Normal [mem 0x00000000-0x7fcf1fff]
> > > > [ 0.000000] Movable zone start for each node
> > > > [ 0.000000] Early memory node ranges
> > > > [ 0.000000] node 0: [mem 0x00000000-0x7f7ddfff]
> > > > [ 0.000000] node 0: [mem 0x7fc00000-0x7fcd1fff]
> > > > [ 0.000000] node 0: [mem 0x7fce2000-0x7fcf1fff]
> > > > [ 0.000000] Initmem setup node 0 [mem 0x00000000-0x7fcf1fff]
> > > > [ 0.000000] On node 0 totalpages: 261216
> > > > [ 0.000000] Normal zone: 2301 pages used for memmap
> > > > [ 0.000000] Normal zone: 0 pages reserved
> > > > [ 0.000000] Normal zone: 261216 pages, LIFO batch:15
> > > > [ 0.000000] Booting Linux...
> > > > [ 0.000000] CPU CAPS: [flush,stbar,swap,muldiv,v9,mul32,div32,v8plus]
> > > > [ 0.000000] CPU CAPS: [vis]
> > > > [ 0.000000] PERCPU: Embedded 7 pages/cpu @fffff8007f000000 s15808 r8192 d33344 u2097152
> > > > [ 0.000000] pcpu-alloc: s15808 r8192 d33344 u2097152 alloc=1*4194304
> > > > [ 0.000000] pcpu-alloc: [0] 6 7
> > > > [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 258915
> > > > [ 0.000000] Kernel command line: root=/dev/sda2 ro debug ignore_loglevel
> > > > [ 0.000000] PID hash table entries: 4096 (order: 2, 32768 bytes)
> > > > [ 0.000000] Dentry cache hash table entries: 262144 (order: 8, 2097152 bytes)
> > > > [ 0.000000] Inode-cache hash table entries: 131072 (order: 7, 1048576 bytes)
> > > > [ 0.000000] Sorting __ex_table...
> > > > [ 0.000000] Memory: 2037784K/2089728K available (4533K kernel code, 305K rwdata, 1504K rodata, 576K init, 14539K bss, 51944K reserved)
> > > > [ 0.000000] Hierarchical RCU implementation.
> > > > [ 0.000000] RCU lockdep checking is enabled.
> > > > [ 0.000000] RCU restricting CPUs from NR_CPUS=16 to nr_cpu_ids=8.
> > > > [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=8
> > > > [ 0.000000] NR_IRQS:2048 nr_irqs:2048 1
> > > > [ 161.238391] clocksource: mult[2800000] shift[24]
> > > > [ 161.277473] clockevent: mult[66666666] shift[32]
> > > > [ 161.318721] Console: colour dummy device 80x25
> > > > [ 161.355382] console [tty0] enabled
> > > > [ 161.380218] bootconsole [earlyprom0] disabled
> > > > [ 161.416696] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
> > > > [ 161.416740] ... MAX_LOCKDEP_SUBCLASSES: 8
> > > > [ 161.416765] ... MAX_LOCK_DEPTH: 48
> > > > [ 161.416790] ... MAX_LOCKDEP_KEYS: 8191
> > > > [ 161.416816] ... CLASSHASH_SIZE: 4096
> > > > [ 161.416841] ... MAX_LOCKDEP_ENTRIES: 32768
> > > > [ 161.416867] ... MAX_LOCKDEP_CHAINS: 65536
> > > > [ 161.416892] ... CHAINHASH_SIZE: 32768
> > > > [ 161.416918] memory used by lock dependency info: 8159 kB
> > > > [ 161.416949] per task-struct memory footprint: 1920 bytes
> > > > [ 161.416978] ------------------------
> > > > [ 161.416999] | Locking API testsuite:
> > > > [ 161.417019] ----------------------------------------------------------------------------
> > > > [ 161.417061] | spin |wlock |rlock |mutex | wsem | rsem |
> > > > [ 161.417104] --------------------------------------------------------------------------
> > > > [ 161.417173] A-A deadlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.457494] A-B-B-A deadlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.495480] A-B-B-C-C-A deadlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.533653] A-B-C-A-B-C deadlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.571829] A-B-B-C-C-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.610241] A-B-C-D-B-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.648630] A-B-C-D-B-C-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.687043] double unlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.724876] initialize held: ok | ok | ok | ok | ok | ok |
> > > > [ 161.762661] bad unlock order: ok | ok | ok | ok | ok | ok |
> > > > [ 161.800701] --------------------------------------------------------------------------
> > > > [ 161.800747] recursive read-lock: | ok | | ok |
> > > > [ 161.813409] recursive read-lock #2: | ok | | ok |
> > > > [ 161.826070] mixed read-write-lock: | ok | | ok |
> > > > [ 161.838756] mixed write-read-lock: | ok | | ok |
> > > > [ 161.851441] --------------------------------------------------------------------------
> > > > [ 161.851489] hard-irqs-on + irq-safe-A/12: ok | ok | ok |
> > > > [ 161.870404] soft-irqs-on + irq-safe-A/12: ok | ok | ok |
> > > > [ 161.889387] hard-irqs-on + irq-safe-A/21: ok | ok | ok |
> > > > [ 161.908303] soft-irqs-on + irq-safe-A/21: ok | ok | ok |
> > > > [ 161.927281] sirq-safe-A => hirqs-on/12: ok | ok | ok |
> > > > [ 161.946218] sirq-safe-A => hirqs-on/21: ok | ok | ok |
> > > > [ 161.965194] hard-safe-A + irqs-on/12: ok | ok | ok |
> > > > [ 161.984110] soft-safe-A + irqs-on/12: ok | ok | ok |
> > > > [ 162.003086] hard-safe-A + irqs-on/21: ok | ok | ok |
> > > > [ 162.022023] soft-safe-A + irqs-on/21: ok | ok | ok |
> > > > [ 162.041005] hard-safe-A + unsafe-B #1/123: ok | ok | ok |
> > > > [ 162.060021] soft-safe-A + unsafe-B #1/123: ok | ok | ok |
> > > > [ 162.079090] hard-safe-A + unsafe-B #1/132: ok | ok | ok |
> > > > [ 162.098089] soft-safe-A + unsafe-B #1/132: ok | ok | ok |
> > > > [ 162.117160] hard-safe-A + unsafe-B #1/213: ok | ok | ok |
> > > > [ 162.136184] soft-safe-A + unsafe-B #1/213: ok | ok | ok |
> > > > [ 162.155258] hard-safe-A + unsafe-B #1/231: ok | ok | ok |
> > > > [ 162.174253] soft-safe-A + unsafe-B #1/231: ok | ok | ok |
> > > > [ 162.193316] hard-safe-A + unsafe-B #1/312: ok | ok | ok |
> > > > [ 162.212268] soft-safe-A + unsafe-B #1/312: ok | ok | ok |
> > > > [ 162.231264] hard-safe-A + unsafe-B #1/321: ok | ok | ok |
> > > > [ 162.250265] soft-safe-A + unsafe-B #1/321: ok | ok | ok |
> > > > [ 162.269312] hard-safe-A + unsafe-B #2/123: ok | ok | ok |
> > > > [ 162.288321] soft-safe-A + unsafe-B #2/123: ok | ok | ok |
> > > > [ 162.307393] hard-safe-A + unsafe-B #2/132: ok | ok | ok |
> > > > [ 162.326395] soft-safe-A + unsafe-B #2/132: ok | ok | ok |
> > > > [ 162.345469] hard-safe-A + unsafe-B #2/213: ok | ok | ok |
> > > > [ 162.364485] soft-safe-A + unsafe-B #2/213: ok | ok | ok |
> > > > [ 162.383569] hard-safe-A + unsafe-B #2/231: ok | ok | ok |
> > > > [ 162.402578] soft-safe-A + unsafe-B #2/231: ok | ok | ok |
> > > > [ 162.421652] hard-safe-A + unsafe-B #2/312: ok | ok | ok |
> > > > [ 162.440662] soft-safe-A + unsafe-B #2/312: ok | ok | ok |
> > > > [ 162.459750] hard-safe-A + unsafe-B #2/321: ok | ok | ok |
> > > > [ 162.478756] soft-safe-A + unsafe-B #2/321: ok | ok | ok |
> > > > [ 162.497822] hard-irq lock-inversion/123: ok | ok | ok |
> > > > [ 162.516832] soft-irq lock-inversion/123: ok | ok | ok |
> > > > [ 162.535924] hard-irq lock-inversion/132: ok | ok | ok |
> > > > [ 162.554942] soft-irq lock-inversion/132: ok | ok | ok |
> > > > [ 162.574036] hard-irq lock-inversion/213: ok | ok | ok |
> > > > [ 162.593071] soft-irq lock-inversion/213: ok | ok | ok |
> > > > [ 162.612151] hard-irq lock-inversion/231: ok | ok | ok |
> > > > [ 162.631163] soft-irq lock-inversion/231: ok | ok | ok |
> > > > [ 162.650245] hard-irq lock-inversion/312: ok | ok | ok |
> > > > [ 162.669272] soft-irq lock-inversion/312: ok | ok | ok |
> > > > [ 162.688368] hard-irq lock-inversion/321: ok | ok | ok |
> > > > [ 162.707370] soft-irq lock-inversion/321: ok | ok | ok |
> > > > [ 162.726457] hard-irq read-recursion/123: ok |
> > > > [ 162.732811] soft-irq read-recursion/123: ok |
> > > > [ 162.739223] hard-irq read-recursion/132: ok |
> > > > [ 162.745568] soft-irq read-recursion/132: ok |
> > > > [ 162.751969] hard-irq read-recursion/213: ok |
> > > > [ 162.758313] soft-irq read-recursion/213: ok |
> > > > [ 162.764715] hard-irq read-recursion/231: ok |
> > > > [ 162.771062] soft-irq read-recursion/231: ok |
> > > > [ 162.777472] hard-irq read-recursion/312: ok |
> > > > [ 162.783817] soft-irq read-recursion/312: ok |
> > > > [ 162.790220] hard-irq read-recursion/321: ok |
> > > > [ 162.796571] soft-irq read-recursion/321: ok |
> > > > [ 162.802972] --------------------------------------------------------------------------
> > > > [ 162.803016] | Wound/wait tests |
> > > > [ 162.803039] ---------------------
> > > > [ 162.803064] ww api failures: ok | ok | ok |
> > > > [ 162.822112] ww contexts mixing: ok | ok |
> > > > [ 162.834785] finishing ww context: ok | ok | ok | ok |
> > > > [ 162.860095] locking mismatches: ok | ok | ok |
> > > > [ 162.879128] EDEADLK handling: ok | ok | ok | ok | ok | ok | ok | ok | ok | ok |
> > > > [ 162.942686] spinlock nest unlocked: ok |
> > > > [ 162.949005] -----------------------------------------------------
> > > > [ 162.949044] |block | try |context|
> > > > [ 162.949082] -----------------------------------------------------
> > > > [ 162.949121] context: ok | ok | ok |
> > > > [ 162.968211] try: ok | ok | ok |
> > > > [ 162.987181] block: ok | ok | ok |
> > > > [ 163.006186] spinlock: ok | ok | ok |
> > > > [ 163.025283] -------------------------------------------------------
> > > > [ 163.025322] Good, all 253 testcases passed! |
> > > > [ 163.025349] ---------------------------------
> > > > [ 163.027126] ODEBUG: selftest passed
> > > > [ 163.027345] kmemleak: Early log buffer exceeded (3329), please increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE
> > > > [ 163.169263] Calibrating delay using timer specific routine.. 804.17 BogoMIPS (lpj=4020880)
> > > > [ 163.169341] pid_max: default: 32768 minimum: 301
> > > > [ 163.170354] Mount-cache hash table entries: 4096 (order: 2, 32768 bytes)
> > > > [ 163.170426] Mountpoint-cache hash table entries: 4096 (order: 2, 32768 bytes)
> > > > [ 163.191280] CPU 7: synchronized TICK with master CPU (last diff -8 cycles, maxerr 677 cycles)
> > > > [ 163.191904] Brought up 2 CPUs
> > > > [ 163.196096] devtmpfs: initialized
> > > > [ 163.199102] Performance events: No support for PMU type 'ultra12'
> > > > [ 163.282260] atomic64_test: passed
> > > > [ 163.284207] kworker/u4:0 (20) used greatest stack depth: 8216 bytes left
> > > > [ 163.300285] device-tree: Duplicate name in base, renamed to "fhc#1"
> > > > [ 163.307412] device-tree: Duplicate name in base, renamed to "counter-timer#1"
> > > > [ 163.312131] device-tree: Duplicate name in base, renamed to "fhc#2"
> > > > [ 163.314228] device-tree: Duplicate name in base, renamed to "counter-timer#2"
> > > > [ 163.318010] device-tree: Duplicate name in base, renamed to "counter-timer#3"
> > > > [ 163.323548] device-tree: Duplicate name in base, renamed to "fhc#3"
> > > > [ 163.325699] device-tree: Duplicate name in base, renamed to "counter-timer#4"
> > > > [ 163.330745] device-tree: Duplicate name in base, renamed to "counter-timer#5"
> > > > [ 163.333752] NET: Registered protocol family 16
> > > > [ 163.344321] kworker/u4:0 (31) used greatest stack depth: 7976 bytes left
> > > > [ 163.347152] kworker/u4:0 (34) used greatest stack depth: 7896 bytes left
> > > > [ 163.390763] SYSIO: UPA portID ffffffff, at 000001c400000000
> > > > [ 163.400388] SYSIO: UPA portID ffffffff, at 000001c600000000
> > > > [ 163.410018] SYSIO: UPA portID ffffffff, at 000001d400000000
> > > > [ 163.420198] SYSIO: UPA portID ffffffff, at 000001d600000000
> > > > [ 163.439052] /pci@e,4000: PCI IO[1dc02010000] MEM[1dd80000000]
> > > > [ 163.439288] /pci@e,4000: PSYCHO PCI Bus Module ver[4:0]
> > > > [ 163.439377] PCI: Scanning PBM /pci@e,4000
> > > > [ 163.440634] psycho f01bf7bc: PCI host bridge to bus 0000:00
> > > > [ 163.440713] pci_bus 0000:00: root bus resource [io 0x1dc02010000-0x1dc0201ffff] (bus address [0x0000-0xffff])
> > > > [ 163.440818] pci_bus 0000:00: root bus resource [mem 0x1dd80000000-0x1ddffffffff] (bus address [0x00000000-0x7fffffff])
> > > > [ 163.440929] pci_bus 0000:00: root bus resource [bus 00]
> > > > [ 163.445838] /pci@e,2000: PCI IO[1dc02000000] MEM[1dd00000000]
> > > > [ 163.445927] /pci@e,2000: PSYCHO PCI Bus Module ver[4:0]
> > > > [ 163.445984] PCI: Scanning PBM /pci@e,2000
> > > > [ 163.446800] psycho f01c88e0: PCI host bridge to bus 0001:80
> > > > [ 163.446876] pci_bus 0001:80: root bus resource [io 0x1dc02000000-0x1dc0200ffff] (bus address [0x0000-0xffff])
> > > > [ 163.446983] pci_bus 0001:80: root bus resource [mem 0x1dd00000000-0x1dd7fffffff] (bus address [0x00000000-0x7fffffff])
> > > > [ 163.447088] pci_bus 0001:80: root bus resource [bus 80]
> > > > [ 163.457405] /pci@f,4000: PCI IO[1de02010000] MEM[1df80000000]
> > > > [ 163.457494] /pci@f,4000: PSYCHO PCI Bus Module ver[4:0]
> > > > [ 163.457549] PCI: Scanning PBM /pci@f,4000
> > > > [ 163.458367] psycho f01ca118: PCI host bridge to bus 0002:00
> > > > [ 163.458443] pci_bus 0002:00: root bus resource [io 0x1de02010000-0x1de0201ffff] (bus address [0x0000-0xffff])
> > > > [ 163.458547] pci_bus 0002:00: root bus resource [mem 0x1df80000000-0x1dfffffffff] (bus address [0x00000000-0x7fffffff])
> > > > [ 163.458653] pci_bus 0002:00: root bus resource [bus 00]
> > > > [ 163.461719] /pci@f,2000: PCI IO[1de02000000] MEM[1df00000000]
> > > > [ 163.461804] /pci@f,2000: PSYCHO PCI Bus Module ver[4:0]
> > > > [ 163.461859] PCI: Scanning PBM /pci@f,2000
> > > > [ 163.462668] psycho f01d320c: PCI host bridge to bus 0003:80
> > > > [ 163.462743] pci_bus 0003:80: root bus resource [io 0x1de02000000-0x1de0200ffff] (bus address [0x0000-0xffff])
> > > > [ 163.462855] pci_bus 0003:80: root bus resource [mem 0x1df00000000-0x1df7fffffff] (bus address [0x00000000-0x7fffffff])
> > > > [ 163.462964] pci_bus 0003:80: root bus resource [bus 80]
> > > > [ 163.580345] vgaarb: loaded
> > > > [ 163.584298] SCSI subsystem initialized
> > > > [ 163.592449] /central/fhc@0,f8800000/eeprom@0,908000: Mostek regs at 0x1fff8908000
> > > > [ 163.595898] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e] (Central)
> > > > [ 163.596622] fhc: Board #3, Version[1] PartID[fa0] Manuf[3e] (JTAG Master)
> > > > [ 163.597384] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e]
> > > > [ 163.598197] fhc: Board #5, Version[1] PartID[fa0] Manuf[3e]
> > > > [ 163.598978] fhc: Board #7, Version[1] PartID[fa0] Manuf[3e]
> > > > [ 163.600178] clock_board: Detected 5 slot Enterprise system.
> > > > [ 163.690823] DMA-API: preallocated 32768 debug entries
> > > > [ 163.690902] DMA-API: debugging enabled by kernel config
> > > > [ 163.693159] Switched to clocksource tick
> > > > [ 163.703829] kworker/u4:0 (280) used greatest stack depth: 7752 bytes left
> > > > [ 163.754938] NET: Registered protocol family 2
> > > > [ 163.757716] TCP established hash table entries: 16384 (order: 4, 131072 bytes)
> > > > [ 163.758687] TCP bind hash table entries: 16384 (order: 7, 1048576 bytes)
> > > > [ 163.768861] TCP: Hash tables configured (established 16384 bind 16384)
> > > > [ 163.769822] TCP: reno registered
> > > > [ 163.769975] UDP hash table entries: 1024 (order: 4, 163840 bytes)
> > > > [ 163.771566] UDP-Lite hash table entries: 1024 (order: 4, 163840 bytes)
> > > > [ 163.775400] NET: Registered protocol family 1
> > > > [ 163.775741] PCI: CLS 0 bytes, default 64
> > > > [ 163.784319] futex hash table entries: 512 (order: 3, 65536 bytes)
> > > > [ 163.784865] ====[ backtrace testing ]===========
> > > > [ 163.784908] Testing a backtrace from process context.
> > > > [ 163.784952] The following trace is a kernel self test and not a bug!
> > > > [ 163.785015] CPU: 6 PID: 1 Comm: swapper/6 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > > [ 163.785076] Call Trace:
> > > > [ 163.785122] [00000000004cd80c] backtrace_regression_test+0x2c/0x100
> > > > [ 163.785183] [0000000000426ea4] do_one_initcall+0xe4/0x1e0
> > > > [ 163.785250] [0000000000a40b44] kernel_init_freeable+0x120/0x1d0
> > > > [ 163.785326] [0000000000865a84] kernel_init+0x4/0x100
> > > > [ 163.785389] [0000000000406104] ret_from_fork+0x1c/0x2c
> > > > [ 163.785436] [0000000000000000] (null)
> > > > [ 163.785477] Testing a backtrace from irq context.
> > > > [ 163.785519] The following trace is a kernel self test and not a bug!
> > > > [ 163.786004] CPU: 6 PID: 3 Comm: ksoftirqd/6 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > > [ 163.786068] Call Trace:
> > > > [ 163.786116] [00000000004cd7c4] backtrace_test_irq_callback+0x4/0x20
> > > > [ 163.786183] [000000000045f278] tasklet_action+0x98/0x120
> > > > [ 163.786238] [000000000045f3f0] __do_softirq+0xf0/0x240
> > > > [ 163.786294] [000000000045f568] run_ksoftirqd+0x28/0x80
> > > > [ 163.786373] [000000000047e3e4] smpboot_thread_fn+0x244/0x280
> > > > [ 163.786440] [0000000000479ef0] kthread+0xb0/0xe0
> > > > [ 163.786496] [0000000000406104] ret_from_fork+0x1c/0x2c
> > > > [ 163.786546] [0000000000000000] (null)
> > > > [ 163.786707] Testing a saved backtrace.
> > > > [ 163.786753] The following trace is a kernel self test and not a bug!
> > > > [ 163.786810] [<00000000004cd8a8>] backtrace_regression_test+0xc8/0x100
> > > > [ 163.786888] [<0000000000426ea4>] do_one_initcall+0xe4/0x1e0
> > > > [ 163.786952] [<0000000000a40b44>] kernel_init_freeable+0x120/0x1d0
> > > > [ 163.787022] [<0000000000865a84>] kernel_init+0x4/0x100
> > > > [ 163.787088] [<0000000000406104>] ret_from_fork+0x1c/0x2c
> > > > [ 163.787153] [< (null)>] (null)
> > > > [ 163.787207] ====[ end of backtrace testing ]====
> > > > [ 163.787332] audit: initializing netlink subsys (disabled)
> > > > [ 163.787886] audit: type=2000 audit(2.050:1): initialized
> > > > [ 163.791649] HugeTLB registered 8 MB page size, pre-allocated 0 pages
> > > > [ 163.797716] msgmni has been set to 3980
> > > > [ 163.803398] io scheduler noop registered
> > > > [ 163.803651] io scheduler cfq registered (default)
> > > > [ 163.803717] start plist test
> > > > [ 163.826582] end plist test
> > > > [ 163.831561] test_string_helpers: Running tests...
> > > > [ 164.044577] zs f005de3c: ttyS0 at MMIO 0x1fff8902000 (irq = 2, base_baud = 307200) is a zs (ESCC)
> > > > [ 164.044724] Console: ttyS0 (SunZilog zs0)
> > > > [ 179.468351] console [ttyS0] enabled
> > > > [ 179.496405] zs f005de3c: ttyS1 at MMIO 0x1fff8902004 (irq = 2, base_baud = 307200) is a zs (ESCC)
> > > > [ 179.795321] f005df14: Keyboard at MMIO 0x1fff8904000 (irq = 2) is a zs
> > > > [ 179.855846] f005df14: Mouse at MMIO 0x1fff8904004 (irq = 2) is a zs
> > > > [ 179.954009] loop: module loaded
> > > > [ 179.975578] PCI: Enabling device: (0003:80:02.0), cmd 3
> > > > [ 185.152853] scsi0: Missing case in ahd_handle_scsiint. status = 0
> > > > [ 185.208135] >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<
> > > > scsi0: Dumping Card State at program address 0x0 Mode 0x33
> > > > [ 185.334228] Card was paused
> > > > [ 185.351888] INTSTAT[0x8]:(SCSIINT) SELOID[0x0] SELID[0x0] HS_MAILBOX[0x0]
> > > > [ 185.418562] INTCTL[0x0] SEQINTSTAT[0x0] SAVED_MODE[0x25] DFFSTAT[0x33]:(CURRFIFO_NONE|FIFO0FREE|FIFO1FREE)
> > > > [ 185.519625] SCSISIGI[0x0]:(P_DATAOUT) SCSIPHASE[0x0] SCSIBUS[0x0]
> > > > [ 185.577970] LASTPHASE[0x1]:(P_DATAOUT|P_BUSFREE) SCSISEQ0[0x0]
> > > > [ 185.633186] SCSISEQ1[0x12]:(ENAUTOATNP|ENRSELI) SEQCTL0[0x0] SEQINTCTL[0x0]
> > > > [ 185.701952] SEQ_FLAGS[0x0] SEQ_FLAGS2[0x0] QFREEZE_COUNT[0x0]
> > > > [ 185.756130] KERNEL_QFREEZE_COUNT[0x0] MK_MESSAGE_SCB[0xff00] MK_MESSAGE_SCSIID[0xff]
> > > > [ 185.834268] SSTAT0[0x0] SSTAT1[0x0] SSTAT2[0x0] SSTAT3[0x0] PERRDIAG[0x0]
> > > > [ 185.900952] SIMODE1[0xa4]:(ENSCSIPERR|ENSCSIRST|ENSELTIMO) LQISTAT0[0x0]
> > > > [ 185.966586] LQISTAT1[0x0] LQISTAT2[0x0] LQOSTAT0[0x0] LQOSTAT1[0x0]
> > > > [ 186.027015] LQOSTAT2[0x0]
> > > > [ 186.043701]
> > > > SCB Count = 8 CMDS_PENDING = 0 LASTSCB 0xffff CURRSCB 0x0 NEXTSCB 0x0
> > > > [ 186.119786] qinstart = 0 qinfifonext = 0
> > > > QINFIFO:
> > > > WAITING_TID_QUEUES:
> > > > [ 186.183326] Pending list:
> > > > Total 0
> > > > [ 186.208314] Kernel Free SCB list: 7 6 5 4 3 2 1 0
> > > > [ 186.249973] Sequencer Complete DMA-inprog list:
> > > > [ 186.289562] Sequencer Complete list:
> > > > [ 186.317694] Sequencer DMA-Up and Complete list:
> > > > [ 186.357284] Sequencer On QFreeze and Complete list:
> > > > [ 186.401059]
> > > >
> > > > scsi0: FIFO0 Free, LONGJMP == 0x803b, SCB 0x0
> > > > [ 186.454230] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
> > > > [ 186.544821] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
> > > > [ 186.622965] SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
> > > > [ 186.689642] SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
> > > > [ 186.766758] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
> > > >
> > > > scsi0: FIFO1 Free, LONGJMP == 0x80bc, SCB 0x0
> > > > [ 186.878272] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
> > > > [ 186.968863] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
> > > > [ 187.047006] SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
> > > > [ 187.113688] SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
> > > > [ 187.190796] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
> > > > LQIN: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
> > > > [ 187.342907] scsi0: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x52
> > > > [ 187.403351] scsi0: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x0
> > > > [ 187.449192] scsi0: SAVED_SCSIID = 0x0 SAVED_LUN = 0x0
> > > >
> > > > [ 187.496052] SIMODE0[0x6c]:(ENOVERRUN|ENIOERR|ENSELDI|ENSELDO)
> > > > [ 187.550231] CCSCBCTL[0x0]
> > > > [ 187.566913] scsi0: REG0 == 0x45d1, SINDEX = 0x0, DINDEX = 0x0
> > > > [ 187.620062] scsi0: SCBPTR == 0x1ff, SCB_NEXT == 0xff00, SCB_NEXT2 == 0x0
> > > > [ 187.684665] CDB ff 1 0 0 0 0
> > > > [ 187.703390] STACK: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
> > > > <<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>
> > > > [ 187.806958] scsi host0: Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 3.0
> > > > <Adaptec 29320ALP PCIx Ultra320 SCSI adapter>
> > > > aic7901: Ultra320 Wide Channel A, SCSI Id=7, PCI 33 or 66MHz, 512 SCBs
> > > > [ 188.016407] qla1280: QLA1040 found on PCI bus 0, dev 3
> > > > [ 188.060231] PCI: Enabling device: (0002:00:03.0), cmd 7
> > > >
> > > > [ 188.275021] ===============================
> > > > [ 188.309351] [ INFO: suspicious RCU usage. ]
> > > > [ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted
> > > > [ 188.394786] -------------------------------
> > > > [ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used illegally while idle!
> > > > [ 188.505235]
> > > > other info that might help us debug this:
> > > >
> > > > [ 188.554230]
> > > > RCU used illegally from idle CPU!
> > > > rcu_scheduler_active = 1, debug_locks = 0
> > > > [ 188.637587] RCU used illegally from extended quiescent state!
> > > > [ 188.690684] 3 locks held by swapper/7/0:
> > > > [ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60
> > > > [ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400
> > > > [ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40
> > > > [ 188.973043]
> > > > stack backtrace:
> > > > [ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > > [ 189.076187] Call Trace:
> > > > [ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100
> > > > [ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40
> > > > [ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400
> > > > [ 189.252258] [000000000048554c] default_wake_function+0xc/0x20
> > > > [ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80
> > > > [ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40
> > > > [ 189.406456] [0000000000495e08] complete+0x28/0x60
> > > > [ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20
> > > > [ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60
> > > > [ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180
> > > > [ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600
> > > > [ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0
> > > > [ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140
> > > > [ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20
> > > > [ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0
> > > > [ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40
> > > > [ 190.269728] random: nonblocking pool is initialized
> > > > [ 190.828808] scsi(1:0): Resetting SCSI BUS
> > > > [ 193.862671] scsi host1: QLogic QLA1040 PCI to SCSI Host Adapter
> > > > Firmware version: 7.65.06, Driver version 3.27.1
> > > > [ 193.976290] blk-mq: reduced tag depth to 10240
> > > > [ 194.037930] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 8.07.00.16-k.
> > > > [ 194.118405] PCI: Enabling device: (0001:80:02.0), cmd 3
> > > > [ 194.165280] qla2xxx [0001:80:02.0]-001d: : Found an ISP2200 irq 49 iobase 0x000001dd00002000.
> > > > [ 194.353211] qla2xxx 0001:80:02.0: Direct firmware load for ql2200_fw.bin failed with error -2
> > > > [ 194.437839] qla2xxx 0001:80:02.0: Falling back to user helper
> > > > [ 194.491932] scsi 1:0:2:0: Direct-Access IBM DDYS-T18350M S96H PQ: 0 ANSI: 3
> > > > [ 194.573022] scsi(1:0:2:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > > [ 194.823272] scsi 1:0:4:0: Direct-Access IBM DDYS-T18350M S80D PQ: 0 ANSI: 3
> > > > [ 194.903416] scsi(1:0:4:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > > [ 195.662569] scsi 1:0:10:0: Direct-Access HP 9.10GB A 80-6331 PQ: 0 ANSI: 2
> > > > [ 195.743713] scsi(1:0:10:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > > [ 195.830214] scsi 1:0:11:0: Direct-Access IBM DDRS-34560D DC1B PQ: 0 ANSI: 2
> > > > [ 195.911336] scsi(1:0:11:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > > [ 196.006929] scsi 1:0:12:0: Direct-Access HP 4.26GB A 80-0430 0430 PQ: 0 ANSI: 2
> > > > [ 196.087903] scsi(1:0:12:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > > [ 196.187208] scsi 1:0:13:0: Direct-Access HP 2.13GB A 80-0430 0430 PQ: 0 ANSI: 2
> > > > [ 196.268525] scsi(1:0:13:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > > [ 254.692919] qla2xxx [0001:80:02.0]-0063:2: Failed to load firmware image (ql2200_fw.bin).
> > > > [ 254.773218] qla2xxx [0001:80:02.0]-0083:2: Fimware image unavailable.
> > > > [ 254.834679] qla2xxx [0001:80:02.0]-0084:2: Firmware images can be retrieved from: http://ldriver.qlogic.com/firmware/.
> > > > [ 254.947216] qla2xxx [0001:80:02.0]-00cf:2: Setup chip ****FAILED****.
> > > > [ 255.008657] qla2xxx [0001:80:02.0]-00d6:2: Failed to initialize adapter - Adapter flags 2.
> > > > [ 255.097006] sunhme.c:v3.10 August 26, 2008 David S. Miller (davem@davemloft.net)
> > > > [ 255.170460] eth0: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:b6:ee:e2
> > > > [ 255.235445] sd 1:0:4:0: [sdb] 35843670 512-byte logical blocks: (18.3 GB/17.0 GiB)
> > > > [ 255.237573] eth1: Quattro HME slot 0 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:94
> > > > [ 255.239977] eth2: Quattro HME slot 1 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:95
> > > > [ 255.242388] eth3: Quattro HME slot 2 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:96
> > > > [ 255.244859] eth4: Quattro HME slot 3 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:97
> > > > [ 255.247283] eth5: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:b6:ee:e2
> > > > [ 255.247840] PCI: Enabling device: (0000:00:01.1), cmd 2
> > > > [ 255.250196] eth6: HAPPY MEAL (PCI/CheerIO) 10/100BaseT Ethernet 08:00:20:b6:ee:e2
> > > > [ 255.251312] sd 1:0:2:0: [sda] 35843670 512-byte logical blocks: (18.3 GB/17.0 GiB)
> > > > [ 255.310326] sd 1:0:2:0: [sda] Write Protect is off
> > > > [ 255.310343] sd 1:0:2:0: [sda] Mode Sense: cb 00 00 08
> > > > [ 255.310591] sd 1:0:10:0: [sdc] 17773524 512-byte logical blocks: (9.10 GB/8.47 GiB)
> > > > [ 255.310697] sd 1:0:11:0: [sdd] 8925000 512-byte logical blocks: (4.56 GB/4.25 GiB)
> > > > [ 255.311960] mousedev: PS/2 mouse device common for all mice
> > > > [ 255.315824] rtc-m48t59 rtc-m48t59.0: rtc core: registered m48t59 as rtc0
> > > > [ 255.317082] TCP: cubic registered
> > > > [ 255.317108] NET: Registered protocol family 17
> > > > [ 255.318580] registered taskstats version 1
> > > > [ 255.385635] sd 1:0:12:0: [sde] 8330543 512-byte logical blocks: (4.26 GB/3.97 GiB)
> > > > [ 255.385792] sd 1:0:10:0: [sdc] Write Protect is off
> > > > [ 255.385809] sd 1:0:10:0: [sdc] Mode Sense: 9f 00 10 08
> > > > [ 255.385905] sd 1:0:11:0: [sdd] Write Protect is off
> > > > [ 255.385921] sd 1:0:11:0: [sdd] Mode Sense: b9 00 00 08
> > > > [ 255.460208] rtc-m48t59 rtc-m48t59.0: setting system clock to 2014-11-06 14:44:49 UTC (1415285089)
> > > > [ 255.460593] sd 1:0:2:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > > > [ 255.460897] sd 1:0:12:0: [sde] Write Protect is off
> > > > [ 255.460913] sd 1:0:12:0: [sde] Mode Sense: 9f 00 10 08
> > > > [ 255.535967] sd 1:0:10:0: [sdc] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > > > [ 255.536140] sd 1:0:13:0: [sdf] 4165272 512-byte logical blocks: (2.13 GB/1.98 GiB)
> > > > [ 255.536319] sd 1:0:11:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > > > [ 255.611389] sd 1:0:12:0: [sde] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > > > [ 255.611526] sd 1:0:13:0: [sdf] Write Protect is off
> > > > [ 255.611542] sd 1:0:13:0: [sdf] Mode Sense: 9f 00 10 08
> > > > [ 255.724337] sd 1:0:13:0: [sdf] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > > > [ 255.960802] sda: sda1 sda2 sda3 sda4
> > > > [ 256.036886] sdd: unknown partition table
> > > > [ 256.038024] sdc: unknown partition table
> > > > [ 256.161971] sde: unknown partition table
> > > > [ 256.226521] sdf: unknown partition table
> > > > [ 256.287571] sd 1:0:2:0: [sda] Attached SCSI disk
> > > > [ 256.320837] sd 1:0:11:0: [sdd] Attached SCSI disk
> > > > [ 256.321195] sd 1:0:10:0: [sdc] Attached SCSI disk
> > > > [ 256.438589] sd 1:0:12:0: [sde] Attached SCSI disk
> > > > [ 256.484470] sd 1:0:13:0: [sdf] Attached SCSI disk
> > > > [ 257.730003] sd 1:0:4:0: [sdb] Write Protect is off
> > > > [ 257.769724] sd 1:0:4:0: [sdb] Mode Sense: cb 00 00 08
> > > > [ 257.816196] sd 1:0:4:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > > > [ 257.932380] sdb: unknown partition table
> > > > [ 257.967850] sd 1:0:4:0: [sdb] Attached SCSI disk
> > > > [ 258.009691] EXT4-fs (sda2): mounting ext3 file system using the ext4 subsystem
> > > > [ 258.103029] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
> > > > [ 258.177139] VFS: Mounted root (ext3 filesystem) readonly on device 8:2.
> > > > [ 258.268770] devtmpfs: mounted
> > > > [ 259.504165] stty (523) used greatest stack depth: 5544 bytes left
> > > > [ 261.465793] systemd-udevd[610]: starting version 215
> > > > [ 262.297628] hme f009fba8 eth7: renamed from eth2
> > > > [ 262.430354] systemd-udevd[634]: renamed network interface eth2 to eth7
> > > > [ 262.430471] hme f0099bf4 eth9: renamed from eth1
> > > > [ 262.553566] systemd-udevd[648]: renamed network interface eth1 to eth9
> > > > [ 262.633511] hme f008d070 eth1: renamed from eth0
> > > > [ 262.697674] hwclock (658) used greatest stack depth: 4168 bytes left
> > > > [ 262.773763] hme f00ab960 eth8: renamed from eth4
> > > > [ 262.873209] systemd-udevd[635]: renamed network interface eth0 to eth1
> > > > [ 262.918444] hme 0000:00:01.1 eth0: renamed from eth6
> > > > [ 262.918716] systemd-udevd[640]: renamed network interface eth4 to eth8
> > > > [ 263.053804] systemd-udevd[643]: renamed network interface eth6 to eth0
> > > > [ 263.114350] hme f01673a8 eth2: renamed from eth5
> > > > [ 263.192734] hme f00a5a84 eth10: renamed from eth3
> > > > [ 263.238837] systemd-udevd[641]: renamed network interface eth5 to eth2
> > > > [ 263.355961] systemd-udevd[639]: renamed network interface eth3 to eth10
> > > > [ 267.436399] Adding 787176k swap on /dev/sda4. Priority:-1 extents:1 across:787176k
> > > > [ 267.775195] EXT4-fs (sda2): re-mounted. Opts: (null)
> > > > [ 268.309702] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
> > > > [ 272.239364] EXT4-fs (sda1): mounting ext3 file system using the ext4 subsystem
> > > > [ 272.321644] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
> > > > [ 280.082651] eth0: Link is up using internal transceiver at 100Mb/s, Full Duplex.
> > > > [ 284.153738] basename (1686) used greatest stack depth: 3752 bytes left
> > > >
> > > > --
> > > > Meelis Roos (mroos@linux.ee)
> > > ---end quoted text---
> > >
> > >
> >
> >
>
> --
> Meelis Roos (mroos@ut.ee) http://www.cs.ut.ee/~mroos/
>
>
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: blk_mq: suspicious RCU usage, rcu_read_lock() used illegally while idle!
@ 2014-11-07 15:06 ` Paul E. McKenney
0 siblings, 0 replies; 11+ messages in thread
From: Paul E. McKenney @ 2014-11-07 15:06 UTC (permalink / raw)
To: Meelis Roos
Cc: Christoph Hellwig, linux-scsi, Jens Axboe, David Miller, sparclinux
On Fri, Nov 07, 2014 at 12:50:02PM +0200, Meelis Roos wrote:
> Added DaveM and sparclinux to CC.
>
> On Thu, 6 Nov 2014, Paul E. McKenney wrote:
> > On Thu, Nov 06, 2014 at 07:46:16AM -0800, Christoph Hellwig wrote:
> > > Without help from Paul I can't even make sense of the message..
> >
> > It looks to me like the SUN4U architecture is failing to invoke
> > rcu_irq_enter() on entry to the smp_call_function_single_client()
> > IPI handler.
> >
> > And I am not seeing any sign of this in the call sequence in 3.17.
> > Does the following patch help?
> >
> > ------------------------------------------------------------------------
> >
> > diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
> > index 302c476413d5..971a488264ff 100644
> > --- a/arch/sparc/kernel/smp_64.c
> > +++ b/arch/sparc/kernel/smp_64.c
> > @@ -822,7 +822,9 @@ void __irq_entry smp_call_function_client(int irq, struct pt_regs *regs)
> > void __irq_entry smp_call_function_single_client(int irq, struct pt_regs *regs)
> > {
> > clear_softint(1 << irq);
> > + irq_enter();
> > generic_smp_call_function_single_interrupt();
> > + irq_exit();
> > }
> >
> > static void tsb_sync(void *info)
> >
> > ------------------------------------------------------------------------
>
> It makes the RCU warning go away and the scsi controller still works.
Woo-hoo!!! ;-)
> > If there is something bad about invoking all of irq_enter() and irq_exit()
> > for this handler on SPARC, perhaps this would be better:
> >
> > ------------------------------------------------------------------------
> >
> > diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
> > index 302c476413d5..ce3e329c3ccc 100644
> > --- a/arch/sparc/kernel/smp_64.c
> > +++ b/arch/sparc/kernel/smp_64.c
> > @@ -822,7 +822,9 @@ void __irq_entry smp_call_function_client(int irq, struct pt_regs *regs)
> > void __irq_entry smp_call_function_single_client(int irq, struct pt_regs *regs)
> > {
> > clear_softint(1 << irq);
> > + rcu_irq_enter();
> > generic_smp_call_function_single_interrupt();
> > + rcu_irq_exit();
> > }
> >
> > static void tsb_sync(void *info)
> >
> > ------------------------------------------------------------------------
>
>
> This works the same - no warning, everything still works.
Woo-hoo two!!! ;-)
> Perhaps DaveM can tell which one is coreect or if there is any related
> problem.
Happy to push either of them along, if appropriate.
Thanx, Paul
> > Do either of these help?
> >
> > Thanx, Paul
> >
> > > On Thu, Nov 06, 2014 at 05:45:43PM +0200, Meelis Roos wrote:
> > > > I tested a machine with multiple scsi adapters today with latest kernel
> > > > and found the following warning in the logs. It is probably from QLA1040
> > > > adapter initialization, full dmesg is below. Adaptec SCSI card dumps is
> > > > normal on this server, it is usually there and seems to be harmless
> > > > (maybe a supurious IRQ somewhere - but this should not be relevant).
> > > >
> > > > The message is not there for scsi_mod.use_blk_mq=0 boot.
> > > >
> > > > Booting 3.17.0 with scsi_mod.use_blk_mq=1 does not show this message
> > > > either.
> > > >
> > > > [ 188.275021] ===============> > > > [ 188.309351] [ INFO: suspicious RCU usage. ]
> > > > [ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted
> > > > [ 188.394786] -------------------------------
> > > > [ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used
> > > > illegally while idle!
> > > > [ 188.505235]
> > > > other info that might help us debug this:
> > > >
> > > > [ 188.554230]
> > > > RCU used illegally from idle CPU!
> > > > rcu_scheduler_active = 1, debug_locks = 0
> > > > [ 188.637587] RCU used illegally from extended quiescent state!
> > > > [ 188.690684] 3 locks held by swapper/7/0:
> > > > [ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60
> > > > [ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400
> > > > [ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40
> > > > [ 188.973043]stack backtrace:
> > > > [ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > > [ 189.076187] Call Trace:
> > > > [ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100
> > > > [ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40
> > > > [ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400
> > > > [ 189.252258] [000000000048554c] default_wake_function+0xc/0x20
> > > > [ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80
> > > > [ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40
> > > > [ 189.406456] [0000000000495e08] complete+0x28/0x60
> > > > [ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20
> > > > [ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60
> > > > [ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180
> > > > [ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600
> > > > [ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0
> > > > [ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140
> > > > [ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20
> > > > [ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0
> > > > [ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40
> > > >
> > > >
> > > > Full dmesg:
> > > >
> > > > [ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 3.2.30 2002/10/25 14:03'
> > > > [ 0.000000] PROMLIB: Root node compatible:
> > > > [ 0.000000] Linux version 3.18.0-rc3-00068-g20f3963-dirty (mroos@korvits) (gcc version 4.9.1 (Debian 4.9.1-18) ) #54 SMP Thu Nov 6 14:37:34 EET 2014
> > > > [ 0.000000] debug: ignoring loglevel setting.
> > > > [ 0.000000] bootconsole [earlyprom0] enabled
> > > > [ 0.000000] ARCH: SUN4U
> > > > [ 0.000000] Ethernet address: 08:00:20:b6:ee:e2
> > > > [ 0.000000] MM: PAGE_OFFSET is 0xfffff80000000000 (max_phys_bits = 40)
> > > > [ 0.000000] MM: VMALLOC [0x0000000100000000 --> 0x0000060000000000]
> > > > [ 0.000000] MM: VMEMMAP [0x0000060000000000 --> 0x00000c0000000000]
> > > > [ 0.000000] Kernel: Using 6 locked TLB entries for main kernel image.
> > > > [ 0.000000] Remapping the kernel... done.
> > > > [ 0.000000] kmemleak: Kernel memory leak detector disabled
> > > > [ 0.000000] OF stdout device is: /central@1f,0/fhc@0,f8800000/zs@0,902000:a
> > > > [ 0.000000] PROM: Built device tree with 169763 bytes of memory.
> > > > [ 0.000000] Top of RAM: 0x7fcf2000, Total RAM: 0x7f8c0000
> > > > [ 0.000000] Memory hole size: 4MB
> > > > [ 0.000000] Allocated 2113536 bytes for kernel page tables.
> > > > [ 0.000000] Zone ranges:
> > > > [ 0.000000] Normal [mem 0x00000000-0x7fcf1fff]
> > > > [ 0.000000] Movable zone start for each node
> > > > [ 0.000000] Early memory node ranges
> > > > [ 0.000000] node 0: [mem 0x00000000-0x7f7ddfff]
> > > > [ 0.000000] node 0: [mem 0x7fc00000-0x7fcd1fff]
> > > > [ 0.000000] node 0: [mem 0x7fce2000-0x7fcf1fff]
> > > > [ 0.000000] Initmem setup node 0 [mem 0x00000000-0x7fcf1fff]
> > > > [ 0.000000] On node 0 totalpages: 261216
> > > > [ 0.000000] Normal zone: 2301 pages used for memmap
> > > > [ 0.000000] Normal zone: 0 pages reserved
> > > > [ 0.000000] Normal zone: 261216 pages, LIFO batch:15
> > > > [ 0.000000] Booting Linux...
> > > > [ 0.000000] CPU CAPS: [flush,stbar,swap,muldiv,v9,mul32,div32,v8plus]
> > > > [ 0.000000] CPU CAPS: [vis]
> > > > [ 0.000000] PERCPU: Embedded 7 pages/cpu @fffff8007f000000 s15808 r8192 d33344 u2097152
> > > > [ 0.000000] pcpu-alloc: s15808 r8192 d33344 u2097152 alloc=1*4194304
> > > > [ 0.000000] pcpu-alloc: [0] 6 7
> > > > [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 258915
> > > > [ 0.000000] Kernel command line: root=/dev/sda2 ro debug ignore_loglevel
> > > > [ 0.000000] PID hash table entries: 4096 (order: 2, 32768 bytes)
> > > > [ 0.000000] Dentry cache hash table entries: 262144 (order: 8, 2097152 bytes)
> > > > [ 0.000000] Inode-cache hash table entries: 131072 (order: 7, 1048576 bytes)
> > > > [ 0.000000] Sorting __ex_table...
> > > > [ 0.000000] Memory: 2037784K/2089728K available (4533K kernel code, 305K rwdata, 1504K rodata, 576K init, 14539K bss, 51944K reserved)
> > > > [ 0.000000] Hierarchical RCU implementation.
> > > > [ 0.000000] RCU lockdep checking is enabled.
> > > > [ 0.000000] RCU restricting CPUs from NR_CPUS\x16 to nr_cpu_ids=8.
> > > > [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf\x16, nr_cpu_ids=8
> > > > [ 0.000000] NR_IRQS:2048 nr_irqs:2048 1
> > > > [ 161.238391] clocksource: mult[2800000] shift[24]
> > > > [ 161.277473] clockevent: mult[66666666] shift[32]
> > > > [ 161.318721] Console: colour dummy device 80x25
> > > > [ 161.355382] console [tty0] enabled
> > > > [ 161.380218] bootconsole [earlyprom0] disabled
> > > > [ 161.416696] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
> > > > [ 161.416740] ... MAX_LOCKDEP_SUBCLASSES: 8
> > > > [ 161.416765] ... MAX_LOCK_DEPTH: 48
> > > > [ 161.416790] ... MAX_LOCKDEP_KEYS: 8191
> > > > [ 161.416816] ... CLASSHASH_SIZE: 4096
> > > > [ 161.416841] ... MAX_LOCKDEP_ENTRIES: 32768
> > > > [ 161.416867] ... MAX_LOCKDEP_CHAINS: 65536
> > > > [ 161.416892] ... CHAINHASH_SIZE: 32768
> > > > [ 161.416918] memory used by lock dependency info: 8159 kB
> > > > [ 161.416949] per task-struct memory footprint: 1920 bytes
> > > > [ 161.416978] ------------------------
> > > > [ 161.416999] | Locking API testsuite:
> > > > [ 161.417019] ----------------------------------------------------------------------------
> > > > [ 161.417061] | spin |wlock |rlock |mutex | wsem | rsem |
> > > > [ 161.417104] --------------------------------------------------------------------------
> > > > [ 161.417173] A-A deadlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.457494] A-B-B-A deadlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.495480] A-B-B-C-C-A deadlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.533653] A-B-C-A-B-C deadlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.571829] A-B-B-C-C-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.610241] A-B-C-D-B-D-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.648630] A-B-C-D-B-C-D-A deadlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.687043] double unlock: ok | ok | ok | ok | ok | ok |
> > > > [ 161.724876] initialize held: ok | ok | ok | ok | ok | ok |
> > > > [ 161.762661] bad unlock order: ok | ok | ok | ok | ok | ok |
> > > > [ 161.800701] --------------------------------------------------------------------------
> > > > [ 161.800747] recursive read-lock: | ok | | ok |
> > > > [ 161.813409] recursive read-lock #2: | ok | | ok |
> > > > [ 161.826070] mixed read-write-lock: | ok | | ok |
> > > > [ 161.838756] mixed write-read-lock: | ok | | ok |
> > > > [ 161.851441] --------------------------------------------------------------------------
> > > > [ 161.851489] hard-irqs-on + irq-safe-A/12: ok | ok | ok |
> > > > [ 161.870404] soft-irqs-on + irq-safe-A/12: ok | ok | ok |
> > > > [ 161.889387] hard-irqs-on + irq-safe-A/21: ok | ok | ok |
> > > > [ 161.908303] soft-irqs-on + irq-safe-A/21: ok | ok | ok |
> > > > [ 161.927281] sirq-safe-A => hirqs-on/12: ok | ok | ok |
> > > > [ 161.946218] sirq-safe-A => hirqs-on/21: ok | ok | ok |
> > > > [ 161.965194] hard-safe-A + irqs-on/12: ok | ok | ok |
> > > > [ 161.984110] soft-safe-A + irqs-on/12: ok | ok | ok |
> > > > [ 162.003086] hard-safe-A + irqs-on/21: ok | ok | ok |
> > > > [ 162.022023] soft-safe-A + irqs-on/21: ok | ok | ok |
> > > > [ 162.041005] hard-safe-A + unsafe-B #1/123: ok | ok | ok |
> > > > [ 162.060021] soft-safe-A + unsafe-B #1/123: ok | ok | ok |
> > > > [ 162.079090] hard-safe-A + unsafe-B #1/132: ok | ok | ok |
> > > > [ 162.098089] soft-safe-A + unsafe-B #1/132: ok | ok | ok |
> > > > [ 162.117160] hard-safe-A + unsafe-B #1/213: ok | ok | ok |
> > > > [ 162.136184] soft-safe-A + unsafe-B #1/213: ok | ok | ok |
> > > > [ 162.155258] hard-safe-A + unsafe-B #1/231: ok | ok | ok |
> > > > [ 162.174253] soft-safe-A + unsafe-B #1/231: ok | ok | ok |
> > > > [ 162.193316] hard-safe-A + unsafe-B #1/312: ok | ok | ok |
> > > > [ 162.212268] soft-safe-A + unsafe-B #1/312: ok | ok | ok |
> > > > [ 162.231264] hard-safe-A + unsafe-B #1/321: ok | ok | ok |
> > > > [ 162.250265] soft-safe-A + unsafe-B #1/321: ok | ok | ok |
> > > > [ 162.269312] hard-safe-A + unsafe-B #2/123: ok | ok | ok |
> > > > [ 162.288321] soft-safe-A + unsafe-B #2/123: ok | ok | ok |
> > > > [ 162.307393] hard-safe-A + unsafe-B #2/132: ok | ok | ok |
> > > > [ 162.326395] soft-safe-A + unsafe-B #2/132: ok | ok | ok |
> > > > [ 162.345469] hard-safe-A + unsafe-B #2/213: ok | ok | ok |
> > > > [ 162.364485] soft-safe-A + unsafe-B #2/213: ok | ok | ok |
> > > > [ 162.383569] hard-safe-A + unsafe-B #2/231: ok | ok | ok |
> > > > [ 162.402578] soft-safe-A + unsafe-B #2/231: ok | ok | ok |
> > > > [ 162.421652] hard-safe-A + unsafe-B #2/312: ok | ok | ok |
> > > > [ 162.440662] soft-safe-A + unsafe-B #2/312: ok | ok | ok |
> > > > [ 162.459750] hard-safe-A + unsafe-B #2/321: ok | ok | ok |
> > > > [ 162.478756] soft-safe-A + unsafe-B #2/321: ok | ok | ok |
> > > > [ 162.497822] hard-irq lock-inversion/123: ok | ok | ok |
> > > > [ 162.516832] soft-irq lock-inversion/123: ok | ok | ok |
> > > > [ 162.535924] hard-irq lock-inversion/132: ok | ok | ok |
> > > > [ 162.554942] soft-irq lock-inversion/132: ok | ok | ok |
> > > > [ 162.574036] hard-irq lock-inversion/213: ok | ok | ok |
> > > > [ 162.593071] soft-irq lock-inversion/213: ok | ok | ok |
> > > > [ 162.612151] hard-irq lock-inversion/231: ok | ok | ok |
> > > > [ 162.631163] soft-irq lock-inversion/231: ok | ok | ok |
> > > > [ 162.650245] hard-irq lock-inversion/312: ok | ok | ok |
> > > > [ 162.669272] soft-irq lock-inversion/312: ok | ok | ok |
> > > > [ 162.688368] hard-irq lock-inversion/321: ok | ok | ok |
> > > > [ 162.707370] soft-irq lock-inversion/321: ok | ok | ok |
> > > > [ 162.726457] hard-irq read-recursion/123: ok |
> > > > [ 162.732811] soft-irq read-recursion/123: ok |
> > > > [ 162.739223] hard-irq read-recursion/132: ok |
> > > > [ 162.745568] soft-irq read-recursion/132: ok |
> > > > [ 162.751969] hard-irq read-recursion/213: ok |
> > > > [ 162.758313] soft-irq read-recursion/213: ok |
> > > > [ 162.764715] hard-irq read-recursion/231: ok |
> > > > [ 162.771062] soft-irq read-recursion/231: ok |
> > > > [ 162.777472] hard-irq read-recursion/312: ok |
> > > > [ 162.783817] soft-irq read-recursion/312: ok |
> > > > [ 162.790220] hard-irq read-recursion/321: ok |
> > > > [ 162.796571] soft-irq read-recursion/321: ok |
> > > > [ 162.802972] --------------------------------------------------------------------------
> > > > [ 162.803016] | Wound/wait tests |
> > > > [ 162.803039] ---------------------
> > > > [ 162.803064] ww api failures: ok | ok | ok |
> > > > [ 162.822112] ww contexts mixing: ok | ok |
> > > > [ 162.834785] finishing ww context: ok | ok | ok | ok |
> > > > [ 162.860095] locking mismatches: ok | ok | ok |
> > > > [ 162.879128] EDEADLK handling: ok | ok | ok | ok | ok | ok | ok | ok | ok | ok |
> > > > [ 162.942686] spinlock nest unlocked: ok |
> > > > [ 162.949005] -----------------------------------------------------
> > > > [ 162.949044] |block | try |context|
> > > > [ 162.949082] -----------------------------------------------------
> > > > [ 162.949121] context: ok | ok | ok |
> > > > [ 162.968211] try: ok | ok | ok |
> > > > [ 162.987181] block: ok | ok | ok |
> > > > [ 163.006186] spinlock: ok | ok | ok |
> > > > [ 163.025283] -------------------------------------------------------
> > > > [ 163.025322] Good, all 253 testcases passed! |
> > > > [ 163.025349] ---------------------------------
> > > > [ 163.027126] ODEBUG: selftest passed
> > > > [ 163.027345] kmemleak: Early log buffer exceeded (3329), please increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE
> > > > [ 163.169263] Calibrating delay using timer specific routine.. 804.17 BogoMIPS (lpj@20880)
> > > > [ 163.169341] pid_max: default: 32768 minimum: 301
> > > > [ 163.170354] Mount-cache hash table entries: 4096 (order: 2, 32768 bytes)
> > > > [ 163.170426] Mountpoint-cache hash table entries: 4096 (order: 2, 32768 bytes)
> > > > [ 163.191280] CPU 7: synchronized TICK with master CPU (last diff -8 cycles, maxerr 677 cycles)
> > > > [ 163.191904] Brought up 2 CPUs
> > > > [ 163.196096] devtmpfs: initialized
> > > > [ 163.199102] Performance events: No support for PMU type 'ultra12'
> > > > [ 163.282260] atomic64_test: passed
> > > > [ 163.284207] kworker/u4:0 (20) used greatest stack depth: 8216 bytes left
> > > > [ 163.300285] device-tree: Duplicate name in base, renamed to "fhc#1"
> > > > [ 163.307412] device-tree: Duplicate name in base, renamed to "counter-timer#1"
> > > > [ 163.312131] device-tree: Duplicate name in base, renamed to "fhc#2"
> > > > [ 163.314228] device-tree: Duplicate name in base, renamed to "counter-timer#2"
> > > > [ 163.318010] device-tree: Duplicate name in base, renamed to "counter-timer#3"
> > > > [ 163.323548] device-tree: Duplicate name in base, renamed to "fhc#3"
> > > > [ 163.325699] device-tree: Duplicate name in base, renamed to "counter-timer#4"
> > > > [ 163.330745] device-tree: Duplicate name in base, renamed to "counter-timer#5"
> > > > [ 163.333752] NET: Registered protocol family 16
> > > > [ 163.344321] kworker/u4:0 (31) used greatest stack depth: 7976 bytes left
> > > > [ 163.347152] kworker/u4:0 (34) used greatest stack depth: 7896 bytes left
> > > > [ 163.390763] SYSIO: UPA portID ffffffff, at 000001c400000000
> > > > [ 163.400388] SYSIO: UPA portID ffffffff, at 000001c600000000
> > > > [ 163.410018] SYSIO: UPA portID ffffffff, at 000001d400000000
> > > > [ 163.420198] SYSIO: UPA portID ffffffff, at 000001d600000000
> > > > [ 163.439052] /pci@e,4000: PCI IO[1dc02010000] MEM[1dd80000000]
> > > > [ 163.439288] /pci@e,4000: PSYCHO PCI Bus Module ver[4:0]
> > > > [ 163.439377] PCI: Scanning PBM /pci@e,4000
> > > > [ 163.440634] psycho f01bf7bc: PCI host bridge to bus 0000:00
> > > > [ 163.440713] pci_bus 0000:00: root bus resource [io 0x1dc02010000-0x1dc0201ffff] (bus address [0x0000-0xffff])
> > > > [ 163.440818] pci_bus 0000:00: root bus resource [mem 0x1dd80000000-0x1ddffffffff] (bus address [0x00000000-0x7fffffff])
> > > > [ 163.440929] pci_bus 0000:00: root bus resource [bus 00]
> > > > [ 163.445838] /pci@e,2000: PCI IO[1dc02000000] MEM[1dd00000000]
> > > > [ 163.445927] /pci@e,2000: PSYCHO PCI Bus Module ver[4:0]
> > > > [ 163.445984] PCI: Scanning PBM /pci@e,2000
> > > > [ 163.446800] psycho f01c88e0: PCI host bridge to bus 0001:80
> > > > [ 163.446876] pci_bus 0001:80: root bus resource [io 0x1dc02000000-0x1dc0200ffff] (bus address [0x0000-0xffff])
> > > > [ 163.446983] pci_bus 0001:80: root bus resource [mem 0x1dd00000000-0x1dd7fffffff] (bus address [0x00000000-0x7fffffff])
> > > > [ 163.447088] pci_bus 0001:80: root bus resource [bus 80]
> > > > [ 163.457405] /pci@f,4000: PCI IO[1de02010000] MEM[1df80000000]
> > > > [ 163.457494] /pci@f,4000: PSYCHO PCI Bus Module ver[4:0]
> > > > [ 163.457549] PCI: Scanning PBM /pci@f,4000
> > > > [ 163.458367] psycho f01ca118: PCI host bridge to bus 0002:00
> > > > [ 163.458443] pci_bus 0002:00: root bus resource [io 0x1de02010000-0x1de0201ffff] (bus address [0x0000-0xffff])
> > > > [ 163.458547] pci_bus 0002:00: root bus resource [mem 0x1df80000000-0x1dfffffffff] (bus address [0x00000000-0x7fffffff])
> > > > [ 163.458653] pci_bus 0002:00: root bus resource [bus 00]
> > > > [ 163.461719] /pci@f,2000: PCI IO[1de02000000] MEM[1df00000000]
> > > > [ 163.461804] /pci@f,2000: PSYCHO PCI Bus Module ver[4:0]
> > > > [ 163.461859] PCI: Scanning PBM /pci@f,2000
> > > > [ 163.462668] psycho f01d320c: PCI host bridge to bus 0003:80
> > > > [ 163.462743] pci_bus 0003:80: root bus resource [io 0x1de02000000-0x1de0200ffff] (bus address [0x0000-0xffff])
> > > > [ 163.462855] pci_bus 0003:80: root bus resource [mem 0x1df00000000-0x1df7fffffff] (bus address [0x00000000-0x7fffffff])
> > > > [ 163.462964] pci_bus 0003:80: root bus resource [bus 80]
> > > > [ 163.580345] vgaarb: loaded
> > > > [ 163.584298] SCSI subsystem initialized
> > > > [ 163.592449] /central/fhc@0,f8800000/eeprom@0,908000: Mostek regs at 0x1fff8908000
> > > > [ 163.595898] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e] (Central)
> > > > [ 163.596622] fhc: Board #3, Version[1] PartID[fa0] Manuf[3e] (JTAG Master)
> > > > [ 163.597384] fhc: Board #1, Version[1] PartID[fa0] Manuf[3e]
> > > > [ 163.598197] fhc: Board #5, Version[1] PartID[fa0] Manuf[3e]
> > > > [ 163.598978] fhc: Board #7, Version[1] PartID[fa0] Manuf[3e]
> > > > [ 163.600178] clock_board: Detected 5 slot Enterprise system.
> > > > [ 163.690823] DMA-API: preallocated 32768 debug entries
> > > > [ 163.690902] DMA-API: debugging enabled by kernel config
> > > > [ 163.693159] Switched to clocksource tick
> > > > [ 163.703829] kworker/u4:0 (280) used greatest stack depth: 7752 bytes left
> > > > [ 163.754938] NET: Registered protocol family 2
> > > > [ 163.757716] TCP established hash table entries: 16384 (order: 4, 131072 bytes)
> > > > [ 163.758687] TCP bind hash table entries: 16384 (order: 7, 1048576 bytes)
> > > > [ 163.768861] TCP: Hash tables configured (established 16384 bind 16384)
> > > > [ 163.769822] TCP: reno registered
> > > > [ 163.769975] UDP hash table entries: 1024 (order: 4, 163840 bytes)
> > > > [ 163.771566] UDP-Lite hash table entries: 1024 (order: 4, 163840 bytes)
> > > > [ 163.775400] NET: Registered protocol family 1
> > > > [ 163.775741] PCI: CLS 0 bytes, default 64
> > > > [ 163.784319] futex hash table entries: 512 (order: 3, 65536 bytes)
> > > > [ 163.784865] ==[ backtrace testing ]=====> > > > [ 163.784908] Testing a backtrace from process context.
> > > > [ 163.784952] The following trace is a kernel self test and not a bug!
> > > > [ 163.785015] CPU: 6 PID: 1 Comm: swapper/6 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > > [ 163.785076] Call Trace:
> > > > [ 163.785122] [00000000004cd80c] backtrace_regression_test+0x2c/0x100
> > > > [ 163.785183] [0000000000426ea4] do_one_initcall+0xe4/0x1e0
> > > > [ 163.785250] [0000000000a40b44] kernel_init_freeable+0x120/0x1d0
> > > > [ 163.785326] [0000000000865a84] kernel_init+0x4/0x100
> > > > [ 163.785389] [0000000000406104] ret_from_fork+0x1c/0x2c
> > > > [ 163.785436] [0000000000000000] (null)
> > > > [ 163.785477] Testing a backtrace from irq context.
> > > > [ 163.785519] The following trace is a kernel self test and not a bug!
> > > > [ 163.786004] CPU: 6 PID: 3 Comm: ksoftirqd/6 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > > [ 163.786068] Call Trace:
> > > > [ 163.786116] [00000000004cd7c4] backtrace_test_irq_callback+0x4/0x20
> > > > [ 163.786183] [000000000045f278] tasklet_action+0x98/0x120
> > > > [ 163.786238] [000000000045f3f0] __do_softirq+0xf0/0x240
> > > > [ 163.786294] [000000000045f568] run_ksoftirqd+0x28/0x80
> > > > [ 163.786373] [000000000047e3e4] smpboot_thread_fn+0x244/0x280
> > > > [ 163.786440] [0000000000479ef0] kthread+0xb0/0xe0
> > > > [ 163.786496] [0000000000406104] ret_from_fork+0x1c/0x2c
> > > > [ 163.786546] [0000000000000000] (null)
> > > > [ 163.786707] Testing a saved backtrace.
> > > > [ 163.786753] The following trace is a kernel self test and not a bug!
> > > > [ 163.786810] [<00000000004cd8a8>] backtrace_regression_test+0xc8/0x100
> > > > [ 163.786888] [<0000000000426ea4>] do_one_initcall+0xe4/0x1e0
> > > > [ 163.786952] [<0000000000a40b44>] kernel_init_freeable+0x120/0x1d0
> > > > [ 163.787022] [<0000000000865a84>] kernel_init+0x4/0x100
> > > > [ 163.787088] [<0000000000406104>] ret_from_fork+0x1c/0x2c
> > > > [ 163.787153] [< (null)>] (null)
> > > > [ 163.787207] ==[ end of backtrace testing ]==
> > > > [ 163.787332] audit: initializing netlink subsys (disabled)
> > > > [ 163.787886] audit: type 00 audit(2.050:1): initialized
> > > > [ 163.791649] HugeTLB registered 8 MB page size, pre-allocated 0 pages
> > > > [ 163.797716] msgmni has been set to 3980
> > > > [ 163.803398] io scheduler noop registered
> > > > [ 163.803651] io scheduler cfq registered (default)
> > > > [ 163.803717] start plist test
> > > > [ 163.826582] end plist test
> > > > [ 163.831561] test_string_helpers: Running tests...
> > > > [ 164.044577] zs f005de3c: ttyS0 at MMIO 0x1fff8902000 (irq = 2, base_baud = 307200) is a zs (ESCC)
> > > > [ 164.044724] Console: ttyS0 (SunZilog zs0)
> > > > [ 179.468351] console [ttyS0] enabled
> > > > [ 179.496405] zs f005de3c: ttyS1 at MMIO 0x1fff8902004 (irq = 2, base_baud = 307200) is a zs (ESCC)
> > > > [ 179.795321] f005df14: Keyboard at MMIO 0x1fff8904000 (irq = 2) is a zs
> > > > [ 179.855846] f005df14: Mouse at MMIO 0x1fff8904004 (irq = 2) is a zs
> > > > [ 179.954009] loop: module loaded
> > > > [ 179.975578] PCI: Enabling device: (0003:80:02.0), cmd 3
> > > > [ 185.152853] scsi0: Missing case in ahd_handle_scsiint. status = 0
> > > > [ 185.208135] >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<
> > > > scsi0: Dumping Card State at program address 0x0 Mode 0x33
> > > > [ 185.334228] Card was paused
> > > > [ 185.351888] INTSTAT[0x8]:(SCSIINT) SELOID[0x0] SELID[0x0] HS_MAILBOX[0x0]
> > > > [ 185.418562] INTCTL[0x0] SEQINTSTAT[0x0] SAVED_MODE[0x25] DFFSTAT[0x33]:(CURRFIFO_NONE|FIFO0FREE|FIFO1FREE)
> > > > [ 185.519625] SCSISIGI[0x0]:(P_DATAOUT) SCSIPHASE[0x0] SCSIBUS[0x0]
> > > > [ 185.577970] LASTPHASE[0x1]:(P_DATAOUT|P_BUSFREE) SCSISEQ0[0x0]
> > > > [ 185.633186] SCSISEQ1[0x12]:(ENAUTOATNP|ENRSELI) SEQCTL0[0x0] SEQINTCTL[0x0]
> > > > [ 185.701952] SEQ_FLAGS[0x0] SEQ_FLAGS2[0x0] QFREEZE_COUNT[0x0]
> > > > [ 185.756130] KERNEL_QFREEZE_COUNT[0x0] MK_MESSAGE_SCB[0xff00] MK_MESSAGE_SCSIID[0xff]
> > > > [ 185.834268] SSTAT0[0x0] SSTAT1[0x0] SSTAT2[0x0] SSTAT3[0x0] PERRDIAG[0x0]
> > > > [ 185.900952] SIMODE1[0xa4]:(ENSCSIPERR|ENSCSIRST|ENSELTIMO) LQISTAT0[0x0]
> > > > [ 185.966586] LQISTAT1[0x0] LQISTAT2[0x0] LQOSTAT0[0x0] LQOSTAT1[0x0]
> > > > [ 186.027015] LQOSTAT2[0x0]
> > > > [ 186.043701]
> > > > SCB Count = 8 CMDS_PENDING = 0 LASTSCB 0xffff CURRSCB 0x0 NEXTSCB 0x0
> > > > [ 186.119786] qinstart = 0 qinfifonext = 0
> > > > QINFIFO:
> > > > WAITING_TID_QUEUES:
> > > > [ 186.183326] Pending list:
> > > > Total 0
> > > > [ 186.208314] Kernel Free SCB list: 7 6 5 4 3 2 1 0
> > > > [ 186.249973] Sequencer Complete DMA-inprog list:
> > > > [ 186.289562] Sequencer Complete list:
> > > > [ 186.317694] Sequencer DMA-Up and Complete list:
> > > > [ 186.357284] Sequencer On QFreeze and Complete list:
> > > > [ 186.401059]
> > > >
> > > > scsi0: FIFO0 Free, LONGJMP = 0x803b, SCB 0x0
> > > > [ 186.454230] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
> > > > [ 186.544821] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
> > > > [ 186.622965] SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
> > > > [ 186.689642] SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
> > > > [ 186.766758] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
> > > >
> > > > scsi0: FIFO1 Free, LONGJMP = 0x80bc, SCB 0x0
> > > > [ 186.878272] SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
> > > > [ 186.968863] SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
> > > > [ 187.047006] SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
> > > > [ 187.113688] SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
> > > > [ 187.190796] HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
> > > > LQIN: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
> > > > [ 187.342907] scsi0: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x52
> > > > [ 187.403351] scsi0: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x0
> > > > [ 187.449192] scsi0: SAVED_SCSIID = 0x0 SAVED_LUN = 0x0
> > > >
> > > > [ 187.496052] SIMODE0[0x6c]:(ENOVERRUN|ENIOERR|ENSELDI|ENSELDO)
> > > > [ 187.550231] CCSCBCTL[0x0]
> > > > [ 187.566913] scsi0: REG0 = 0x45d1, SINDEX = 0x0, DINDEX = 0x0
> > > > [ 187.620062] scsi0: SCBPTR = 0x1ff, SCB_NEXT = 0xff00, SCB_NEXT2 = 0x0
> > > > [ 187.684665] CDB ff 1 0 0 0 0
> > > > [ 187.703390] STACK: 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
> > > > <<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>
> > > > [ 187.806958] scsi host0: Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 3.0
> > > > <Adaptec 29320ALP PCIx Ultra320 SCSI adapter>
> > > > aic7901: Ultra320 Wide Channel A, SCSI Id=7, PCI 33 or 66MHz, 512 SCBs
> > > > [ 188.016407] qla1280: QLA1040 found on PCI bus 0, dev 3
> > > > [ 188.060231] PCI: Enabling device: (0002:00:03.0), cmd 7
> > > >
> > > > [ 188.275021] ===============> > > > [ 188.309351] [ INFO: suspicious RCU usage. ]
> > > > [ 188.343737] 3.18.0-rc3-00068-g20f3963-dirty #54 Not tainted
> > > > [ 188.394786] -------------------------------
> > > > [ 188.429170] include/linux/rcupdate.h:883 rcu_read_lock() used illegally while idle!
> > > > [ 188.505235]
> > > > other info that might help us debug this:
> > > >
> > > > [ 188.554230]
> > > > RCU used illegally from idle CPU!
> > > > rcu_scheduler_active = 1, debug_locks = 0
> > > > [ 188.637587] RCU used illegally from extended quiescent state!
> > > > [ 188.690684] 3 locks held by swapper/7/0:
> > > > [ 188.721932] #0: (&x->wait#11){......}, at: [<0000000000495de8>] complete+0x8/0x60
> > > > [ 188.797994] #1: (&p->pi_lock){-.-.-.}, at: [<000000000048510c>] try_to_wake_up+0xc/0x400
> > > > [ 188.881343] #2: (rcu_read_lock){......}, at: [<000000000048a910>] select_task_rq_fair+0x90/0xb40
> > > > [ 188.973043]
> > > > stack backtrace:
> > > > [ 188.993879] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.18.0-rc3-00068-g20f3963-dirty #54
> > > > [ 189.076187] Call Trace:
> > > > [ 189.089719] [0000000000499360] lockdep_rcu_suspicious+0xe0/0x100
> > > > [ 189.147035] [000000000048a99c] select_task_rq_fair+0x11c/0xb40
> > > > [ 189.202253] [00000000004852d8] try_to_wake_up+0x1d8/0x400
> > > > [ 189.252258] [000000000048554c] default_wake_function+0xc/0x20
> > > > [ 189.306435] [0000000000495554] __wake_up_common+0x34/0x80
> > > > [ 189.356448] [00000000004955b4] __wake_up_locked+0x14/0x40
> > > > [ 189.406456] [0000000000495e08] complete+0x28/0x60
> > > > [ 189.448142] [0000000000636e28] blk_end_sync_rq+0x8/0x20
> > > > [ 189.496057] [0000000000639898] __blk_mq_end_request+0x18/0x60
> > > > [ 189.550249] [00000000006ee014] scsi_end_request+0x94/0x180
> > > > [ 189.601286] [00000000006ee334] scsi_io_completion+0x1d4/0x600
> > > > [ 189.655463] [00000000006e51c4] scsi_finish_command+0xc4/0xe0
> > > > [ 189.708598] [00000000006ed958] scsi_softirq_done+0x118/0x140
> > > > [ 189.761735] [00000000006398ec] __blk_mq_complete_request_remote+0xc/0x20
> > > > [ 189.827383] [00000000004c75d0] generic_smp_call_function_single_interrupt+0x150/0x1c0
> > > > [ 189.906581] [000000000043e514] smp_call_function_single_client+0x14/0x40
> > > > [ 190.269728] random: nonblocking pool is initialized
> > > > [ 190.828808] scsi(1:0): Resetting SCSI BUS
> > > > [ 193.862671] scsi host1: QLogic QLA1040 PCI to SCSI Host Adapter
> > > > Firmware version: 7.65.06, Driver version 3.27.1
> > > > [ 193.976290] blk-mq: reduced tag depth to 10240
> > > > [ 194.037930] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 8.07.00.16-k.
> > > > [ 194.118405] PCI: Enabling device: (0001:80:02.0), cmd 3
> > > > [ 194.165280] qla2xxx [0001:80:02.0]-001d: : Found an ISP2200 irq 49 iobase 0x000001dd00002000.
> > > > [ 194.353211] qla2xxx 0001:80:02.0: Direct firmware load for ql2200_fw.bin failed with error -2
> > > > [ 194.437839] qla2xxx 0001:80:02.0: Falling back to user helper
> > > > [ 194.491932] scsi 1:0:2:0: Direct-Access IBM DDYS-T18350M S96H PQ: 0 ANSI: 3
> > > > [ 194.573022] scsi(1:0:2:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > > [ 194.823272] scsi 1:0:4:0: Direct-Access IBM DDYS-T18350M S80D PQ: 0 ANSI: 3
> > > > [ 194.903416] scsi(1:0:4:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > > [ 195.662569] scsi 1:0:10:0: Direct-Access HP 9.10GB A 80-6331 PQ: 0 ANSI: 2
> > > > [ 195.743713] scsi(1:0:10:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > > [ 195.830214] scsi 1:0:11:0: Direct-Access IBM DDRS-34560D DC1B PQ: 0 ANSI: 2
> > > > [ 195.911336] scsi(1:0:11:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > > [ 196.006929] scsi 1:0:12:0: Direct-Access HP 4.26GB A 80-0430 0430 PQ: 0 ANSI: 2
> > > > [ 196.087903] scsi(1:0:12:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > > [ 196.187208] scsi 1:0:13:0: Direct-Access HP 2.13GB A 80-0430 0430 PQ: 0 ANSI: 2
> > > > [ 196.268525] scsi(1:0:13:0): Sync: period 10, offset 12, Wide, Tagged queuing: depth 31
> > > > [ 254.692919] qla2xxx [0001:80:02.0]-0063:2: Failed to load firmware image (ql2200_fw.bin).
> > > > [ 254.773218] qla2xxx [0001:80:02.0]-0083:2: Fimware image unavailable.
> > > > [ 254.834679] qla2xxx [0001:80:02.0]-0084:2: Firmware images can be retrieved from: http://ldriver.qlogic.com/firmware/.
> > > > [ 254.947216] qla2xxx [0001:80:02.0]-00cf:2: Setup chip ****FAILED****.
> > > > [ 255.008657] qla2xxx [0001:80:02.0]-00d6:2: Failed to initialize adapter - Adapter flags 2.
> > > > [ 255.097006] sunhme.c:v3.10 August 26, 2008 David S. Miller (davem@davemloft.net)
> > > > [ 255.170460] eth0: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:b6:ee:e2
> > > > [ 255.235445] sd 1:0:4:0: [sdb] 35843670 512-byte logical blocks: (18.3 GB/17.0 GiB)
> > > > [ 255.237573] eth1: Quattro HME slot 0 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:94
> > > > [ 255.239977] eth2: Quattro HME slot 1 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:95
> > > > [ 255.242388] eth3: Quattro HME slot 2 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:96
> > > > [ 255.244859] eth4: Quattro HME slot 3 (SBUS) 10/100baseT Ethernet 08:00:20:93:79:97
> > > > [ 255.247283] eth5: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:b6:ee:e2
> > > > [ 255.247840] PCI: Enabling device: (0000:00:01.1), cmd 2
> > > > [ 255.250196] eth6: HAPPY MEAL (PCI/CheerIO) 10/100BaseT Ethernet 08:00:20:b6:ee:e2
> > > > [ 255.251312] sd 1:0:2:0: [sda] 35843670 512-byte logical blocks: (18.3 GB/17.0 GiB)
> > > > [ 255.310326] sd 1:0:2:0: [sda] Write Protect is off
> > > > [ 255.310343] sd 1:0:2:0: [sda] Mode Sense: cb 00 00 08
> > > > [ 255.310591] sd 1:0:10:0: [sdc] 17773524 512-byte logical blocks: (9.10 GB/8.47 GiB)
> > > > [ 255.310697] sd 1:0:11:0: [sdd] 8925000 512-byte logical blocks: (4.56 GB/4.25 GiB)
> > > > [ 255.311960] mousedev: PS/2 mouse device common for all mice
> > > > [ 255.315824] rtc-m48t59 rtc-m48t59.0: rtc core: registered m48t59 as rtc0
> > > > [ 255.317082] TCP: cubic registered
> > > > [ 255.317108] NET: Registered protocol family 17
> > > > [ 255.318580] registered taskstats version 1
> > > > [ 255.385635] sd 1:0:12:0: [sde] 8330543 512-byte logical blocks: (4.26 GB/3.97 GiB)
> > > > [ 255.385792] sd 1:0:10:0: [sdc] Write Protect is off
> > > > [ 255.385809] sd 1:0:10:0: [sdc] Mode Sense: 9f 00 10 08
> > > > [ 255.385905] sd 1:0:11:0: [sdd] Write Protect is off
> > > > [ 255.385921] sd 1:0:11:0: [sdd] Mode Sense: b9 00 00 08
> > > > [ 255.460208] rtc-m48t59 rtc-m48t59.0: setting system clock to 2014-11-06 14:44:49 UTC (1415285089)
> > > > [ 255.460593] sd 1:0:2:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > > > [ 255.460897] sd 1:0:12:0: [sde] Write Protect is off
> > > > [ 255.460913] sd 1:0:12:0: [sde] Mode Sense: 9f 00 10 08
> > > > [ 255.535967] sd 1:0:10:0: [sdc] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > > > [ 255.536140] sd 1:0:13:0: [sdf] 4165272 512-byte logical blocks: (2.13 GB/1.98 GiB)
> > > > [ 255.536319] sd 1:0:11:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > > > [ 255.611389] sd 1:0:12:0: [sde] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > > > [ 255.611526] sd 1:0:13:0: [sdf] Write Protect is off
> > > > [ 255.611542] sd 1:0:13:0: [sdf] Mode Sense: 9f 00 10 08
> > > > [ 255.724337] sd 1:0:13:0: [sdf] Write cache: disabled, read cache: enabled, supports DPO and FUA
> > > > [ 255.960802] sda: sda1 sda2 sda3 sda4
> > > > [ 256.036886] sdd: unknown partition table
> > > > [ 256.038024] sdc: unknown partition table
> > > > [ 256.161971] sde: unknown partition table
> > > > [ 256.226521] sdf: unknown partition table
> > > > [ 256.287571] sd 1:0:2:0: [sda] Attached SCSI disk
> > > > [ 256.320837] sd 1:0:11:0: [sdd] Attached SCSI disk
> > > > [ 256.321195] sd 1:0:10:0: [sdc] Attached SCSI disk
> > > > [ 256.438589] sd 1:0:12:0: [sde] Attached SCSI disk
> > > > [ 256.484470] sd 1:0:13:0: [sdf] Attached SCSI disk
> > > > [ 257.730003] sd 1:0:4:0: [sdb] Write Protect is off
> > > > [ 257.769724] sd 1:0:4:0: [sdb] Mode Sense: cb 00 00 08
> > > > [ 257.816196] sd 1:0:4:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> > > > [ 257.932380] sdb: unknown partition table
> > > > [ 257.967850] sd 1:0:4:0: [sdb] Attached SCSI disk
> > > > [ 258.009691] EXT4-fs (sda2): mounting ext3 file system using the ext4 subsystem
> > > > [ 258.103029] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
> > > > [ 258.177139] VFS: Mounted root (ext3 filesystem) readonly on device 8:2.
> > > > [ 258.268770] devtmpfs: mounted
> > > > [ 259.504165] stty (523) used greatest stack depth: 5544 bytes left
> > > > [ 261.465793] systemd-udevd[610]: starting version 215
> > > > [ 262.297628] hme f009fba8 eth7: renamed from eth2
> > > > [ 262.430354] systemd-udevd[634]: renamed network interface eth2 to eth7
> > > > [ 262.430471] hme f0099bf4 eth9: renamed from eth1
> > > > [ 262.553566] systemd-udevd[648]: renamed network interface eth1 to eth9
> > > > [ 262.633511] hme f008d070 eth1: renamed from eth0
> > > > [ 262.697674] hwclock (658) used greatest stack depth: 4168 bytes left
> > > > [ 262.773763] hme f00ab960 eth8: renamed from eth4
> > > > [ 262.873209] systemd-udevd[635]: renamed network interface eth0 to eth1
> > > > [ 262.918444] hme 0000:00:01.1 eth0: renamed from eth6
> > > > [ 262.918716] systemd-udevd[640]: renamed network interface eth4 to eth8
> > > > [ 263.053804] systemd-udevd[643]: renamed network interface eth6 to eth0
> > > > [ 263.114350] hme f01673a8 eth2: renamed from eth5
> > > > [ 263.192734] hme f00a5a84 eth10: renamed from eth3
> > > > [ 263.238837] systemd-udevd[641]: renamed network interface eth5 to eth2
> > > > [ 263.355961] systemd-udevd[639]: renamed network interface eth3 to eth10
> > > > [ 267.436399] Adding 787176k swap on /dev/sda4. Priority:-1 extents:1 across:787176k
> > > > [ 267.775195] EXT4-fs (sda2): re-mounted. Opts: (null)
> > > > [ 268.309702] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
> > > > [ 272.239364] EXT4-fs (sda1): mounting ext3 file system using the ext4 subsystem
> > > > [ 272.321644] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
> > > > [ 280.082651] eth0: Link is up using internal transceiver at 100Mb/s, Full Duplex.
> > > > [ 284.153738] basename (1686) used greatest stack depth: 3752 bytes left
> > > >
> > > > --
> > > > Meelis Roos (mroos@linux.ee)
> > > ---end quoted text---
> > >
> > >
> >
> >
>
> --
> Meelis Roos (mroos@ut.ee) http://www.cs.ut.ee/~mroos/
>
>
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: blk_mq: suspicious RCU usage, rcu_read_lock() used illegally while idle!
2014-11-07 15:06 ` Paul E. McKenney
@ 2014-11-07 17:45 ` David Miller
-1 siblings, 0 replies; 11+ messages in thread
From: David Miller @ 2014-11-07 17:45 UTC (permalink / raw)
To: paulmck; +Cc: mroos, hch, linux-scsi, axboe, sparclinux
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Date: Fri, 7 Nov 2014 07:06:28 -0800
> On Fri, Nov 07, 2014 at 12:50:02PM +0200, Meelis Roos wrote:
>> Perhaps DaveM can tell which one is coreect or if there is any related
>> problem.
>
> Happy to push either of them along, if appropriate.
We should use irq_enter()/irq_exit(), and we need to also add it to
smp_call_function_single_client().
I'll code up a final patch for sparc64 and push it upstream, thanks!
Some other architectures appear to have the same problem, for example
alpha and IA64. Someone should grep around generic_smp_call_function*
under arch/ and do an audit.
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: blk_mq: suspicious RCU usage, rcu_read_lock() used illegally while idle!
@ 2014-11-07 17:45 ` David Miller
0 siblings, 0 replies; 11+ messages in thread
From: David Miller @ 2014-11-07 17:45 UTC (permalink / raw)
To: paulmck; +Cc: mroos, hch, linux-scsi, axboe, sparclinux
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Date: Fri, 7 Nov 2014 07:06:28 -0800
> On Fri, Nov 07, 2014 at 12:50:02PM +0200, Meelis Roos wrote:
>> Perhaps DaveM can tell which one is coreect or if there is any related
>> problem.
>
> Happy to push either of them along, if appropriate.
We should use irq_enter()/irq_exit(), and we need to also add it to
smp_call_function_single_client().
I'll code up a final patch for sparc64 and push it upstream, thanks!
Some other architectures appear to have the same problem, for example
alpha and IA64. Someone should grep around generic_smp_call_function*
under arch/ and do an audit.
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: blk_mq: suspicious RCU usage, rcu_read_lock() used illegally while idle!
2014-11-07 17:45 ` David Miller
@ 2014-11-07 23:42 ` Paul E. McKenney
-1 siblings, 0 replies; 11+ messages in thread
From: Paul E. McKenney @ 2014-11-07 23:42 UTC (permalink / raw)
To: David Miller; +Cc: mroos, hch, linux-scsi, axboe, sparclinux
On Fri, Nov 07, 2014 at 12:45:58PM -0500, David Miller wrote:
> From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
> Date: Fri, 7 Nov 2014 07:06:28 -0800
>
> > On Fri, Nov 07, 2014 at 12:50:02PM +0200, Meelis Roos wrote:
> >> Perhaps DaveM can tell which one is coreect or if there is any related
> >> problem.
> >
> > Happy to push either of them along, if appropriate.
>
> We should use irq_enter()/irq_exit(), and we need to also add it to
> smp_call_function_single_client().
>
> I'll code up a final patch for sparc64 and push it upstream, thanks!
Even better! ;-)
> Some other architectures appear to have the same problem, for example
> alpha and IA64. Someone should grep around generic_smp_call_function*
> under arch/ and do an audit.
I will send something along in a couple days if someone else doesn't
beat me to it. ;-)
Thanx, Paul
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: blk_mq: suspicious RCU usage, rcu_read_lock() used illegally while idle!
@ 2014-11-07 23:42 ` Paul E. McKenney
0 siblings, 0 replies; 11+ messages in thread
From: Paul E. McKenney @ 2014-11-07 23:42 UTC (permalink / raw)
To: David Miller; +Cc: mroos, hch, linux-scsi, axboe, sparclinux
On Fri, Nov 07, 2014 at 12:45:58PM -0500, David Miller wrote:
> From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
> Date: Fri, 7 Nov 2014 07:06:28 -0800
>
> > On Fri, Nov 07, 2014 at 12:50:02PM +0200, Meelis Roos wrote:
> >> Perhaps DaveM can tell which one is coreect or if there is any related
> >> problem.
> >
> > Happy to push either of them along, if appropriate.
>
> We should use irq_enter()/irq_exit(), and we need to also add it to
> smp_call_function_single_client().
>
> I'll code up a final patch for sparc64 and push it upstream, thanks!
Even better! ;-)
> Some other architectures appear to have the same problem, for example
> alpha and IA64. Someone should grep around generic_smp_call_function*
> under arch/ and do an audit.
I will send something along in a couple days if someone else doesn't
beat me to it. ;-)
Thanx, Paul
^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2014-11-07 23:42 UTC | newest]
Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-11-06 15:45 blk_mq: suspicious RCU usage, rcu_read_lock() used illegally while idle! Meelis Roos
2014-11-06 15:46 ` Christoph Hellwig
2014-11-06 17:11 ` Paul E. McKenney
2014-11-07 10:50 ` Meelis Roos
2014-11-07 10:50 ` Meelis Roos
2014-11-07 15:06 ` Paul E. McKenney
2014-11-07 15:06 ` Paul E. McKenney
2014-11-07 17:45 ` David Miller
2014-11-07 17:45 ` David Miller
2014-11-07 23:42 ` Paul E. McKenney
2014-11-07 23:42 ` Paul E. McKenney
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.