* [PATCH] net: sk == 0xffffffff fix - not for commit
@ 2013-12-09 11:47 Andrzej Pietrasiewicz
2013-12-09 15:31 ` Eric Dumazet
` (2 more replies)
0 siblings, 3 replies; 11+ messages in thread
From: Andrzej Pietrasiewicz @ 2013-12-09 11:47 UTC (permalink / raw)
To: linux-kernel
Cc: linux-usb, Andrzej Pietrasiewicz, Kyungmin Park, Felipe Balbi,
Greg Kroah-Hartman, Marek Szyprowski, Michal Nazarewicz,
David S. Miller, Alexey Kuznetsov, James Morris,
Hideaki YOSHIFUJI, Patrick McHardy, netdev
NOT FOR COMMITTING TO MAINLINE.
With g_ether loaded the sk occasionally becomes 0xffffffff.
It happens usually after transferring few hundreds of kilobytes to few
tens of megabytes. If sk is 0xffffffff then dereferencing it causes
kernel panic.
This is a *workaround*. I don't know enough net code to understand the core
of the problem. However, with this patch applied the problems are gone,
or at least pushed farther away.
The relevant stack trace below:
[ 53.583351] Unable to handle kernel NULL pointer dereference at virtual address 00000011 ]
[ 53.590077] pgd = c0004000
[ 53.592761] [00000011] *pgd=00000000
[ 53.596319] Internal error: Oops: 17 [#1] PREEMPT ARM
[ 53.601223] Modules linked in: usb_f_ecm g_ether u_ether libcomposite
[ 53.607641] CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.0-rc6+ #157
[ 53.613962] task: c058e5d8 ti: c0584000 task.ti: c0584000
[ 53.619345] PC is at tcp_v4_early_demux+0xbc/0x150
[ 53.624105] LR is at __inet_lookup_established+0x25c/0x2e0
[ 53.629562] pc : [<c03595a4>] lr : [<c033fc0c>] psr: a0000113
[ 53.629562] sp : c0585d08 ip : c0585cd0 fp : c0585d2c
[ 53.640997] r10: c058cf84 r9 : c05c1768 r8 : e7b22740
[ 53.646197] r7 : 00000000 r6 : 00002cb7 r5 : ffffffff r4 : e7b22740
[ 53.652697] r3 : c0304504 r2 : c0585cb8 r1 : e6d3e070 r0 : ffffffff
[ 53.659198] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
[ 53.666476] Control: 10c5387d Table: 57b48019 DAC: 00000015
[ 53.672194] Process swapper (pid: 0, stack limit = 0xc0584238)
[ 53.678001] Stack: (0xc0585d08 to 0xc0586000)
[ 53.682338] 5d00: 0381a8c0 0000eb89 00000002 c0585d20 e7b6e810 e7b22758
[ 53.690484] 5d20: c0585d5c c0585d30 c03377f0 c03594f4 c00104e8 c0028ef4 c058cf70 c058ddec
[ 53.698629] 5d40: 00000008 e7806000 00000000 e7b22740 c0585dac c0585d60 c0311dd4 c0337480
[ 53.706775] 5d60: c058cf78 00000000 60000113 ffffffff c0585dfc e7b22740 c0014368 c058cf84
[ 53.714921] 5d80: 00000000 e7b22740 00000000 c05c8b14 00000002 c05c8b60 00000000 00100100
[ 53.723067] 5da0: c0585dc4 c0585db0 c0312f8c c0311c20 e7b22740 00000000 c0585dfc c0585dc8
[ 53.731212] 5dc0: c031390c c0312f60 00200200 c05c8b44 00000000 c05c8b60 0000000c 0000012a
[ 53.739358] 5de0: c05c8b00 c059c548 00000001 00000040 c0585e3c c0585e00 c031331c c0313874
[ 53.747503] 5e00: c05c8ce3 c0584000 c05ca6c0 ffff3f7c c0028504 00000003 0000000c c05ceb10
[ 53.755650] 5e20: c05ceb0c 00000001 c0584000 c0584000 c0585ea4 c0585e40 c0028968 c0313238
[ 53.763795] 5e40: c005cc94 c005eb24 00200000 c059b3e0 ffff3f7b c059c548 c05ceac0 0000000a
[ 53.771941] 5e60: 00000000 c059e6d8 c0584000 0000000c 00000101 c05c8d70 00000000 60000193
[ 53.780086] 5e80: c0584000 00000000 c0619b00 00000000 412fc082 c0584038 c0585ebc c0585ea8
[ 53.788232] 5ea0: c0028c40 c0028814 00000000 c0584000 c0585ed4 c0585ec0 c0028fb8 c0028bd0
[ 53.796378] 5ec0: c05b5018 00000058 c0585ef4 c0585ed8 c00104e8 c0028ef4 00000020 c0619b28
[ 53.804524] 5ee0: c0585f20 00000001 c0585f1c c0585ef8 c00085dc c00104a8 c058c734 c00106d4
[ 53.812670] 5f00: 60000013 ffffffff c0585f54 c058c0d0 c0585f74 c0585f20 c0014344 c0008578
[ 53.820815] 5f20: 00000000 00002a9c 00000000 c058c734 c0584038 c05c92ac c0584000 c05c8c08
[ 53.828961] 5f40: c058c0d0 412fc082 c0584038 c0585f74 c0585f68 c0585f68 c00106d0 c00106d4
[ 53.837107] 5f60: 60000013 ffffffff c0585f9c c0585f78 c005c2ac c00106ac c058c040 c0584000
[ 53.845252] 5f80: c0584000 c0584000 c03aa868 ffffffff c0585fb4 c0585fa0 c03a2458 c005c198
[ 53.853398] 5fa0: 00000000 c058ca08 c0585ff4 c0585fb8 c053aa74 c03a23d0 ffffffff ffffffff
[ 53.861544] 5fc0: c053a540 00000000 00000000 c0566058 00000000 10c53c7d c058c05c c0566054
[ 53.869689] 5fe0: c058f88c 30004059 00000000 c0585ff8 30008070 c053a7c8 00000000 00000000
[ 53.877848] [<c03595a4>] (tcp_v4_early_demux+0xbc/0x150) from [<c03377f0>] (ip_rcv+0x37c/0x590)
[ 53.886510] [<c03377f0>] (ip_rcv+0x37c/0x590) from [<c0311dd4>] (__netif_receive_skb_core+0x1c0/0x624)
[ 53.895779] [<c0311dd4>] (__netif_receive_skb_core+0x1c0/0x624) from [<c0312f8c>] (__netif_receive_skb+0x38/0x88)
[ 53.906003] [<c0312f8c>] (__netif_receive_skb+0x38/0x88) from [<c031390c>] (process_backlog+0xa4/0x15c)
[ 53.915361] [<c031390c>] (process_backlog+0xa4/0x15c) from [<c031331c>] (net_rx_action+0xf0/0x230)
[ 53.924290] [<c031331c>] (net_rx_action+0xf0/0x230) from [<c0028968>] (__do_softirq+0x160/0x35c)
[ 53.933040] [<c0028968>] (__do_softirq+0x160/0x35c) from [<c0028c40>] (do_softirq+0x7c/0x80)
[ 53.941444] [<c0028c40>] (do_softirq+0x7c/0x80) from [<c0028fb8>] (irq_exit+0xd0/0x10c)
[ 53.949423] [<c0028fb8>] (irq_exit+0xd0/0x10c) from [<c00104e8>] (handle_IRQ+0x4c/0x94)
[ 53.957390] [<c00104e8>] (handle_IRQ+0x4c/0x94) from [<c00085dc>] (vic_handle_irq+0x70/0xac)
[ 53.965795] [<c00085dc>] (vic_handle_irq+0x70/0xac) from [<c0014344>] (__irq_svc+0x44/0x78)
[ 53.974106] Exception stack(0xc0585f20 to 0xc0585f68)
[ 53.979137] 5f20: 00000000 00002a9c 00000000 c058c734 c0584038 c05c92ac c0584000 c05c8c08
[ 53.987283] 5f40: c058c0d0 412fc082 c0584038 c0585f74 c0585f68 c0585f68 c00106d0 c00106d4
[ 53.995423] 5f60: 60000013 ffffffff
[ 53.998898] [<c0014344>] (__irq_svc+0x44/0x78) from [<c00106d4>] (arch_cpu_idle+0x34/0x40)
[ 54.007133] [<c00106d4>] (arch_cpu_idle+0x34/0x40) from [<c005c2ac>] (cpu_startup_entry+0x120/0x26c)
[ 54.016236] [<c005c2ac>] (cpu_startup_entry+0x120/0x26c) from [<c03a2458>] (rest_init+0x94/0x98)
[ 54.024992] [<c03a2458>] (rest_init+0x94/0x98) from [<c053aa74>] (start_kernel+0x2b8/0x2c4)
[ 54.033299] Code: e3043504 e5845010 e34c3030 e5843064 (e5d53012)
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
---
net/ipv4/tcp_ipv4.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index b14266b..c6a318f 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1868,7 +1868,7 @@ void tcp_v4_early_demux(struct sk_buff *skb)
iph->saddr, th->source,
iph->daddr, ntohs(th->dest),
skb->skb_iif);
- if (sk) {
+ if (!IS_ERR_OR_NULL(sk)) {
skb->sk = sk;
skb->destructor = sock_edemux;
if (sk->sk_state != TCP_TIME_WAIT) {
--
1.7.0.4
^ permalink raw reply related [flat|nested] 11+ messages in thread
* Re: [PATCH] net: sk == 0xffffffff fix - not for commit
2013-12-09 11:47 [PATCH] net: sk == 0xffffffff fix - not for commit Andrzej Pietrasiewicz
@ 2013-12-09 15:31 ` Eric Dumazet
2013-12-10 6:55 ` Andrzej Pietrasiewicz
2014-01-17 0:01 ` Andrew Ruder
2014-01-24 13:38 ` Andrew Ruder
2 siblings, 1 reply; 11+ messages in thread
From: Eric Dumazet @ 2013-12-09 15:31 UTC (permalink / raw)
To: Andrzej Pietrasiewicz
Cc: linux-kernel, linux-usb, Kyungmin Park, Felipe Balbi,
Greg Kroah-Hartman, Marek Szyprowski, Michal Nazarewicz,
David S. Miller, Alexey Kuznetsov, James Morris,
Hideaki YOSHIFUJI, Patrick McHardy, netdev
On Mon, 2013-12-09 at 12:47 +0100, Andrzej Pietrasiewicz wrote:
> NOT FOR COMMITTING TO MAINLINE.
>
> With g_ether loaded the sk occasionally becomes 0xffffffff.
> It happens usually after transferring few hundreds of kilobytes to few
> tens of megabytes. If sk is 0xffffffff then dereferencing it causes
> kernel panic.
>
> This is a *workaround*. I don't know enough net code to understand the core
> of the problem. However, with this patch applied the problems are gone,
> or at least pushed farther away.
Is it happening on SMP or UP ?
Crash should happen earlier in __inet_lookup_established()
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] net: sk == 0xffffffff fix - not for commit
2013-12-09 15:31 ` Eric Dumazet
@ 2013-12-10 6:55 ` Andrzej Pietrasiewicz
2013-12-10 14:25 ` Eric Dumazet
0 siblings, 1 reply; 11+ messages in thread
From: Andrzej Pietrasiewicz @ 2013-12-10 6:55 UTC (permalink / raw)
To: Eric Dumazet
Cc: linux-kernel, linux-usb, Kyungmin Park, Felipe Balbi,
Greg Kroah-Hartman, Marek Szyprowski, Michal Nazarewicz,
David S. Miller, Alexey Kuznetsov, James Morris,
Hideaki YOSHIFUJI, Patrick McHardy, netdev
W dniu 09.12.2013 16:31, Eric Dumazet pisze:
> On Mon, 2013-12-09 at 12:47 +0100, Andrzej Pietrasiewicz wrote:
>> NOT FOR COMMITTING TO MAINLINE.
>>
>> With g_ether loaded the sk occasionally becomes 0xffffffff.
>> It happens usually after transferring few hundreds of kilobytes to few
>> tens of megabytes. If sk is 0xffffffff then dereferencing it causes
>> kernel panic.
>>
>> This is a *workaround*. I don't know enough net code to understand the core
>> of the problem. However, with this patch applied the problems are gone,
>> or at least pushed farther away.
>
> Is it happening on SMP or UP ?
UP build, S5PC110
>
> Crash should happen earlier in __inet_lookup_established()
>
>
>
AP
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] net: sk == 0xffffffff fix - not for commit
2013-12-10 6:55 ` Andrzej Pietrasiewicz
@ 2013-12-10 14:25 ` Eric Dumazet
2014-01-16 15:21 ` Andrzej Pietrasiewicz
0 siblings, 1 reply; 11+ messages in thread
From: Eric Dumazet @ 2013-12-10 14:25 UTC (permalink / raw)
To: Andrzej Pietrasiewicz
Cc: linux-kernel, linux-usb, Kyungmin Park, Felipe Balbi,
Greg Kroah-Hartman, Marek Szyprowski, Michal Nazarewicz,
David S. Miller, Alexey Kuznetsov, James Morris,
Hideaki YOSHIFUJI, Patrick McHardy, netdev
On Tue, 2013-12-10 at 07:55 +0100, Andrzej Pietrasiewicz wrote:
> W dniu 09.12.2013 16:31, Eric Dumazet pisze:
> > On Mon, 2013-12-09 at 12:47 +0100, Andrzej Pietrasiewicz wrote:
> >> NOT FOR COMMITTING TO MAINLINE.
> >>
> >> With g_ether loaded the sk occasionally becomes 0xffffffff.
> >> It happens usually after transferring few hundreds of kilobytes to few
> >> tens of megabytes. If sk is 0xffffffff then dereferencing it causes
> >> kernel panic.
> >>
> >> This is a *workaround*. I don't know enough net code to understand the core
> >> of the problem. However, with this patch applied the problems are gone,
> >> or at least pushed farther away.
> >
> > Is it happening on SMP or UP ?
>
> UP build, S5PC110
OK
I believe you need additional debugging to track the exact moment
0xffffffff is fed to 'sk'
It looks like a very strange bug, involving a problem in some assembly
helper, register save/restore, compiler bug or stack corruption or
something.
You should not have more than 150 instructions to decode, including
__inet_lookup_established()
Since __inet_lookup_established() dereferences the socket pointer, I do
not see why it would crash ~20 instructions _later_
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] net: sk == 0xffffffff fix - not for commit
2013-12-10 14:25 ` Eric Dumazet
@ 2014-01-16 15:21 ` Andrzej Pietrasiewicz
2014-01-16 16:29 ` Eric Dumazet
0 siblings, 1 reply; 11+ messages in thread
From: Andrzej Pietrasiewicz @ 2014-01-16 15:21 UTC (permalink / raw)
To: Eric Dumazet
Cc: linux-kernel, linux-usb, Kyungmin Park, Felipe Balbi,
Greg Kroah-Hartman, Marek Szyprowski, Michal Nazarewicz,
David S. Miller, Alexey Kuznetsov, James Morris,
Hideaki YOSHIFUJI, Patrick McHardy, netdev
[-- Attachment #1: Type: text/plain, Size: 1425 bytes --]
W dniu 10.12.2013 15:25, Eric Dumazet pisze:
> On Tue, 2013-12-10 at 07:55 +0100, Andrzej Pietrasiewicz wrote:
>> W dniu 09.12.2013 16:31, Eric Dumazet pisze:
>>> On Mon, 2013-12-09 at 12:47 +0100, Andrzej Pietrasiewicz wrote:
>>>> NOT FOR COMMITTING TO MAINLINE.
>>>>
>>>> With g_ether loaded the sk occasionally becomes 0xffffffff.
>>>> It happens usually after transferring few hundreds of kilobytes to few
>>>> tens of megabytes. If sk is 0xffffffff then dereferencing it causes
>>>> kernel panic.
>>>>
>>>> This is a *workaround*. I don't know enough net code to understand the core
>>>> of the problem. However, with this patch applied the problems are gone,
>>>> or at least pushed farther away.
>>>
>>> Is it happening on SMP or UP ?
>>
>> UP build, S5PC110
>
> OK
>
> I believe you need additional debugging to track the exact moment
> 0xffffffff is fed to 'sk'
>
> It looks like a very strange bug, involving a problem in some assembly
> helper, register save/restore, compiler bug or stack corruption or
> something.
>
I started with adding WARN_ON(sk == 0xffffffff); just before return in
__inet_lookup_established(), and the problem was gone. So this looks
very strange, like a toolchain problem.
I used gcc-linaro-arm-linux-gnueabihf-4.8-2013.05.
If I change the toolchain to
gcc-linaro-arm-linux-gnueabihf-4.7-2013.04-20130415
the problem seems to have gone away.
I attach the kernel config I used.
AP
[-- Attachment #2: s5pc110_goni_defconfig --]
[-- Type: text/plain, Size: 45257 bytes --]
#
# Automatically generated file; DO NOT EDIT.
# Linux/arm 3.9.0-rc1 Kernel Configuration
#
CONFIG_ARM=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_GENERIC_GPIO=y
CONFIG_HAVE_PROC_CPU=y
CONFIG_NO_IOPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
CONFIG_ARCH_HAS_CPUFREQ=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_VECTORS_BASE=0xffff0000
CONFIG_ARM_PATCH_PHYS_VIRT=y
CONFIG_NEED_MACH_GPIO_H=y
CONFIG_NEED_MACH_MEMORY_H=y
CONFIG_GENERIC_BUG=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_EXTABLE_SORT=y
#
# General setup
#
CONFIG_EXPERIMENTAL=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_CROSS_COMPILE=""
CONFIG_LOCALVERSION=""
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_POSIX_MQUEUE_SYSCTL=y
# CONFIG_FHANDLE is not set
# CONFIG_AUDIT is not set
CONFIG_HAVE_GENERIC_HARDIRQS=y
#
# IRQ subsystem
#
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_GENERIC_IRQ_CHIP=y
CONFIG_IRQ_DOMAIN=y
# CONFIG_IRQ_DOMAIN_DEBUG is not set
# CONFIG_ALWAYS_USE_PERSISTENT_CLOCK is not set
CONFIG_KTIME_SCALAR=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_TASKSTATS is not set
#
# RCU Subsystem
#
# CONFIG_TREE_PREEMPT_RCU is not set
CONFIG_TINY_PREEMPT_RCU=y
CONFIG_PREEMPT_RCU=y
# CONFIG_RCU_STALL_COMMON is not set
# CONFIG_TREE_RCU_TRACE is not set
# CONFIG_RCU_BOOST is not set
# CONFIG_IKCONFIG is not set
CONFIG_LOG_BUF_SHIFT=17
# CONFIG_CGROUPS is not set
# CONFIG_CHECKPOINT_RESTORE is not set
CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_IPC_NS is not set
# CONFIG_USER_NS is not set
# CONFIG_PID_NS is not set
# CONFIG_NET_NS is not set
CONFIG_UIDGID_CONVERTED=y
# CONFIG_UIDGID_STRICT_TYPE_CHECKS is not set
# CONFIG_SCHED_AUTOGROUP is not set
# CONFIG_SYSFS_DEPRECATED is not set
# CONFIG_RELAY is not set
# CONFIG_BLK_DEV_INITRD is not set
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_SYSCTL=y
CONFIG_ANON_INODES=y
# CONFIG_EXPERT is not set
CONFIG_HAVE_UID16=y
CONFIG_UID16=y
# CONFIG_SYSCTL_SYSCALL is not set
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
# CONFIG_EMBEDDED is not set
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y
#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLUB_DEBUG=y
CONFIG_COMPAT_BRK=y
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_PROFILING is not set
CONFIG_TRACEPOINTS=y
CONFIG_HAVE_OPROFILE=y
# CONFIG_KPROBES is not set
# CONFIG_JUMP_LABEL is not set
# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_ATTRS=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_HAVE_VIRT_TO_BUS=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_OLD_SIGACTION=y
#
# GCOV-based kernel profiling
#
# CONFIG_GCOV_KERNEL is not set
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
# CONFIG_MODULE_FORCE_LOAD is not set
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
CONFIG_BLOCK=y
CONFIG_LBDAF=y
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_EFI_PARTITION=y
#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
# CONFIG_DEFAULT_DEADLINE is not set
CONFIG_DEFAULT_CFQ=y
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="cfq"
CONFIG_UNINLINE_SPIN_UNLOCK=y
CONFIG_FREEZER=y
#
# System Type
#
CONFIG_MMU=y
# CONFIG_ARCH_MULTIPLATFORM is not set
# CONFIG_ARCH_INTEGRATOR is not set
# CONFIG_ARCH_REALVIEW is not set
# CONFIG_ARCH_VERSATILE is not set
# CONFIG_ARCH_AT91 is not set
# CONFIG_ARCH_BCM2835 is not set
# CONFIG_ARCH_CNS3XXX is not set
# CONFIG_ARCH_CLPS711X is not set
# CONFIG_ARCH_GEMINI is not set
# CONFIG_ARCH_SIRF is not set
# CONFIG_ARCH_EBSA110 is not set
# CONFIG_ARCH_EP93XX is not set
# CONFIG_ARCH_FOOTBRIDGE is not set
# CONFIG_ARCH_MXS is not set
# CONFIG_ARCH_NETX is not set
# CONFIG_ARCH_H720X is not set
# CONFIG_ARCH_IOP13XX is not set
# CONFIG_ARCH_IOP32X is not set
# CONFIG_ARCH_IOP33X is not set
# CONFIG_ARCH_IXP4XX is not set
# CONFIG_ARCH_DOVE is not set
# CONFIG_ARCH_KIRKWOOD is not set
# CONFIG_ARCH_MV78XX0 is not set
# CONFIG_ARCH_ORION5X is not set
# CONFIG_ARCH_MMP is not set
# CONFIG_ARCH_KS8695 is not set
# CONFIG_ARCH_W90X900 is not set
# CONFIG_ARCH_LPC32XX is not set
# CONFIG_ARCH_TEGRA is not set
# CONFIG_ARCH_PXA is not set
# CONFIG_ARCH_MSM is not set
# CONFIG_ARCH_SHMOBILE is not set
# CONFIG_ARCH_RPC is not set
# CONFIG_ARCH_SA1100 is not set
# CONFIG_ARCH_S3C24XX is not set
# CONFIG_ARCH_S3C64XX is not set
# CONFIG_ARCH_S5P64X0 is not set
# CONFIG_ARCH_S5PC100 is not set
CONFIG_ARCH_S5PV210=y
# CONFIG_ARCH_EXYNOS is not set
# CONFIG_ARCH_SHARK is not set
# CONFIG_ARCH_U300 is not set
# CONFIG_ARCH_U8500 is not set
# CONFIG_ARCH_NOMADIK is not set
# CONFIG_PLAT_SPEAR is not set
# CONFIG_ARCH_DAVINCI is not set
# CONFIG_ARCH_OMAP1 is not set
# CONFIG_GPIO_PCA953X is not set
# CONFIG_KEYBOARD_GPIO_POLLED is not set
CONFIG_PLAT_SAMSUNG=y
CONFIG_PLAT_S5P=y
#
# Boot options
#
# CONFIG_S3C_BOOT_ERROR_RESET is not set
CONFIG_S3C_BOOT_UART_FORCE_FIFO=y
CONFIG_S3C_LOWLEVEL_UART_PORT=2
CONFIG_S5P_HRT=y
CONFIG_SAMSUNG_CLOCK=y
CONFIG_SAMSUNG_CLKSRC=y
CONFIG_S5P_CLOCK=y
CONFIG_SAMSUNG_IRQ_VIC_TIMER=y
CONFIG_S5P_IRQ=y
CONFIG_S5P_EXT_INT=y
CONFIG_S5P_GPIO_INT=y
CONFIG_SAMSUNG_GPIOLIB_4BIT=y
CONFIG_S5P_GPIO_DRVSTR=y
CONFIG_SAMSUNG_GPIO_EXTRA=0
CONFIG_S3C_GPIO_SPACE=0
CONFIG_S3C_GPIO_TRACK=y
CONFIG_S5P_DEV_UART=y
# CONFIG_S3C_ADC is not set
CONFIG_S3C_DEV_HSMMC=y
CONFIG_S3C_DEV_HSMMC1=y
CONFIG_S3C_DEV_HSMMC2=y
CONFIG_S3C_DEV_I2C1=y
CONFIG_S3C_DEV_I2C2=y
CONFIG_S3C_DEV_FB=y
CONFIG_S3C_DEV_USB_HSOTG=y
CONFIG_SAMSUNG_DEV_KEYPAD=y
CONFIG_SAMSUNG_DEV_PWM=y
CONFIG_S5P_DEV_FIMC0=y
CONFIG_S5P_DEV_FIMC1=y
CONFIG_S5P_DEV_FIMC2=y
CONFIG_S5P_DEV_MFC=y
CONFIG_S5P_DEV_ONENAND=y
CONFIG_S5P_DEV_TV=y
CONFIG_S3C24XX_PWM=y
CONFIG_SAMSUNG_DMADEV=y
#
# Power management
#
# CONFIG_SAMSUNG_PM_DEBUG is not set
# CONFIG_SAMSUNG_PM_CHECK is not set
CONFIG_S5P_PM=y
CONFIG_S5P_SLEEP=y
CONFIG_DEBUG_S3C_UART=2
CONFIG_CPU_S5PV210=y
CONFIG_S5PV210_SETUP_I2C1=y
CONFIG_S5PV210_SETUP_I2C2=y
CONFIG_S5PV210_SETUP_FB_24BPP=y
CONFIG_S5PV210_SETUP_KEYPAD=y
CONFIG_S5PV210_SETUP_SDHCI=y
CONFIG_S5PV210_SETUP_SDHCI_GPIO=y
CONFIG_S5PV210_SETUP_FIMC=y
CONFIG_S5PV210_SETUP_USB_PHY=y
#
# S5PC110 Machines
#
CONFIG_MACH_AQUILA=y
CONFIG_MACH_GONI=y
# CONFIG_MACH_SMDKC110 is not set
#
# S5PV210 Machines
#
# CONFIG_MACH_SMDKV210 is not set
# CONFIG_MACH_TORBRECK is not set
#
# Processor Type
#
CONFIG_CPU_V7=y
CONFIG_CPU_32v6K=y
CONFIG_CPU_32v7=y
CONFIG_CPU_ABRT_EV7=y
CONFIG_CPU_PABRT_V7=y
CONFIG_CPU_CACHE_V7=y
CONFIG_CPU_CACHE_VIPT=y
CONFIG_CPU_COPY_V6=y
CONFIG_CPU_TLB_V7=y
CONFIG_CPU_HAS_ASID=y
CONFIG_CPU_CP15=y
CONFIG_CPU_CP15_MMU=y
#
# Processor Features
#
# CONFIG_ARM_LPAE is not set
# CONFIG_ARCH_PHYS_ADDR_T_64BIT is not set
CONFIG_ARM_THUMB=y
# CONFIG_ARM_THUMBEE is not set
CONFIG_ARM_VIRT_EXT=y
# CONFIG_SWP_EMULATE is not set
# CONFIG_CPU_ICACHE_DISABLE is not set
# CONFIG_CPU_DCACHE_DISABLE is not set
# CONFIG_CPU_BPREDICT_DISABLE is not set
# CONFIG_CACHE_L2X0 is not set
CONFIG_ARM_L1_CACHE_SHIFT_6=y
CONFIG_ARM_L1_CACHE_SHIFT=6
CONFIG_ARM_DMA_MEM_BUFFERABLE=y
CONFIG_ARM_NR_BANKS=8
CONFIG_MULTI_IRQ_HANDLER=y
# CONFIG_ARM_ERRATA_430973 is not set
# CONFIG_ARM_ERRATA_458693 is not set
# CONFIG_ARM_ERRATA_460075 is not set
# CONFIG_ARM_ERRATA_720789 is not set
# CONFIG_ARM_ERRATA_743622 is not set
CONFIG_ARM_ERRATA_751472=y
# CONFIG_ARM_ERRATA_754322 is not set
# CONFIG_ARM_ERRATA_775420 is not set
#
# Bus support
#
CONFIG_ARM_AMBA=y
CONFIG_ARCH_NO_VIRT_TO_BUS=y
# CONFIG_PCI_SYSCALL is not set
# CONFIG_PCCARD is not set
#
# Kernel Features
#
# CONFIG_HAVE_ARM_ARCH_TIMER is not set
CONFIG_VMSPLIT_3G=y
# CONFIG_VMSPLIT_2G is not set
# CONFIG_VMSPLIT_1G is not set
CONFIG_PAGE_OFFSET=0xC0000000
# CONFIG_ARM_PSCI is not set
CONFIG_ARCH_NR_GPIO=0
# CONFIG_PREEMPT_NONE is not set
# CONFIG_PREEMPT_VOLUNTARY is not set
CONFIG_PREEMPT=y
CONFIG_PREEMPT_COUNT=y
CONFIG_HZ=200
CONFIG_SCHED_HRTICK=y
# CONFIG_THUMB2_KERNEL is not set
CONFIG_AEABI=y
CONFIG_OABI_COMPAT=y
CONFIG_ARCH_HAS_HOLES_MEMORYMODEL=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_DEFAULT=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_HAVE_ARCH_PFN_VALID=y
# CONFIG_HIGHMEM is not set
CONFIG_HW_PERF_EVENTS=y
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_HAVE_MEMORY_PRESENT=y
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_MEMORY_ISOLATION=y
# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
CONFIG_SPLIT_PTLOCK_CPUS=999999
# CONFIG_COMPACTION is not set
CONFIG_MIGRATION=y
# CONFIG_PHYS_ADDR_T_64BIT is not set
CONFIG_ZONE_DMA_FLAG=0
CONFIG_VIRT_TO_BUS=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_NEED_PER_CPU_KM=y
# CONFIG_CLEANCACHE is not set
# CONFIG_FRONTSWAP is not set
CONFIG_FORCE_MAX_ZONEORDER=11
CONFIG_ALIGNMENT_TRAP=y
# CONFIG_UACCESS_WITH_MEMCPY is not set
# CONFIG_SECCOMP is not set
# CONFIG_CC_STACKPROTECTOR is not set
#
# Boot options
#
# CONFIG_USE_OF is not set
CONFIG_ATAGS=y
# CONFIG_DEPRECATED_PARAM_STRUCT is not set
CONFIG_ZBOOT_ROM_TEXT=0
CONFIG_ZBOOT_ROM_BSS=0
CONFIG_CMDLINE="root=/dev/mmcblk0p5 rw rootwait console=ttySAC2,115200"
# CONFIG_CMDLINE_FROM_BOOTLOADER is not set
# CONFIG_CMDLINE_EXTEND is not set
CONFIG_CMDLINE_FORCE=y
# CONFIG_XIP_KERNEL is not set
# CONFIG_KEXEC is not set
# CONFIG_CRASH_DUMP is not set
# CONFIG_AUTO_ZRELADDR is not set
#
# CPU Power Management
#
#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
# CONFIG_CPU_IDLE is not set
# CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is not set
#
# Floating point emulation
#
#
# At least one emulation must be selected
#
# CONFIG_FPE_NWFPE is not set
# CONFIG_FPE_FASTFPE is not set
CONFIG_VFP=y
CONFIG_VFPv3=y
CONFIG_NEON=y
#
# Userspace binary formats
#
CONFIG_BINFMT_ELF=y
CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_HAVE_AOUT=y
# CONFIG_BINFMT_AOUT is not set
# CONFIG_BINFMT_MISC is not set
CONFIG_COREDUMP=y
#
# Power management options
#
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_PM_SLEEP=y
# CONFIG_PM_AUTOSLEEP is not set
# CONFIG_PM_WAKELOCKS is not set
CONFIG_PM_RUNTIME=y
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
# CONFIG_APM_EMULATION is not set
CONFIG_PM_CLK=y
CONFIG_CPU_PM=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARM_CPU_SUSPEND=y
CONFIG_NET=y
#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_DIAG is not set
CONFIG_UNIX=y
# CONFIG_UNIX_DIAG is not set
# CONFIG_XFRM_USER is not set
# CONFIG_NET_KEY is not set
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE_DEMUX is not set
# CONFIG_ARPD is not set
# CONFIG_SYN_COOKIES is not set
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
# CONFIG_INET_XFRM_TUNNEL is not set
# CONFIG_INET_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_LRO is not set
# CONFIG_INET_DIAG is not set
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
# CONFIG_IPV6 is not set
# CONFIG_NETWORK_SECMARK is not set
# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
# CONFIG_NETFILTER is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_L2TP is not set
# CONFIG_BRIDGE is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_IEEE802154 is not set
# CONFIG_NET_SCHED is not set
# CONFIG_DCB is not set
CONFIG_DNS_RESOLVER=y
# CONFIG_BATMAN_ADV is not set
# CONFIG_OPENVSWITCH is not set
# CONFIG_VSOCKETS is not set
CONFIG_BQL=y
# CONFIG_BPF_JIT is not set
#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_NET_DROP_MONITOR is not set
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
CONFIG_WIRELESS=y
# CONFIG_CFG80211 is not set
# CONFIG_LIB80211 is not set
#
# CFG80211 needs to be enabled for MAC80211
#
# CONFIG_WIMAX is not set
# CONFIG_RFKILL is not set
# CONFIG_RFKILL_REGULATOR is not set
# CONFIG_NET_9P is not set
# CONFIG_CAIF is not set
# CONFIG_CEPH_LIB is not set
# CONFIG_NFC is not set
CONFIG_HAVE_BPF_JIT=y
#
# Device Drivers
#
#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
# CONFIG_DEVTMPFS is not set
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
CONFIG_FIRMWARE_IN_KERNEL=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_FW_LOADER_USER_HELPER is not set
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_SYS_HYPERVISOR is not set
# CONFIG_GENERIC_CPU_DEVICES is not set
# CONFIG_DMA_SHARED_BUFFER is not set
CONFIG_CMA=y
# CONFIG_CMA_DEBUG is not set
#
# Default contiguous memory area size:
#
CONFIG_CMA_SIZE_MBYTES=16
CONFIG_CMA_SIZE_SEL_MBYTES=y
# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
# CONFIG_CMA_SIZE_SEL_MIN is not set
# CONFIG_CMA_SIZE_SEL_MAX is not set
CONFIG_CMA_ALIGNMENT=8
CONFIG_CMA_AREAS=7
#
# Bus devices
#
# CONFIG_CONNECTOR is not set
# CONFIG_MTD is not set
# CONFIG_PARPORT is not set
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
# CONFIG_BLK_DEV_CRYPTOLOOP is not set
# CONFIG_BLK_DEV_DRBD is not set
# CONFIG_BLK_DEV_NBD is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=8192
# CONFIG_BLK_DEV_XIP is not set
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_MG_DISK is not set
# CONFIG_BLK_DEV_RBD is not set
#
# Misc devices
#
# CONFIG_SENSORS_LIS3LV02D is not set
# CONFIG_AD525X_DPOT is not set
# CONFIG_ATMEL_PWM is not set
# CONFIG_ICS932S401 is not set
# CONFIG_ATMEL_SSC is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_APDS9802ALS is not set
# CONFIG_ISL29003 is not set
# CONFIG_ISL29020 is not set
# CONFIG_SENSORS_TSL2550 is not set
# CONFIG_SENSORS_BH1780 is not set
# CONFIG_SENSORS_BH1770 is not set
# CONFIG_SENSORS_APDS990X is not set
# CONFIG_HMC6352 is not set
# CONFIG_DS1682 is not set
# CONFIG_TI_DAC7512 is not set
# CONFIG_BMP085_I2C is not set
# CONFIG_BMP085_SPI is not set
# CONFIG_USB_SWITCH_FSA9480 is not set
# CONFIG_LATTICE_ECP3_CONFIG is not set
CONFIG_CMA_TEST=y
# CONFIG_CMA_DEV is not set
# CONFIG_C2PORT is not set
#
# EEPROM support
#
# CONFIG_EEPROM_AT24 is not set
# CONFIG_EEPROM_AT25 is not set
# CONFIG_EEPROM_LEGACY is not set
# CONFIG_EEPROM_MAX6875 is not set
# CONFIG_EEPROM_93CX6 is not set
# CONFIG_EEPROM_93XX46 is not set
#
# Texas Instruments shared transport line discipline
#
# CONFIG_TI_ST is not set
# CONFIG_SENSORS_LIS3_SPI is not set
# CONFIG_SENSORS_LIS3_I2C is not set
#
# Altera FPGA firmware download module
#
# CONFIG_ALTERA_STAPL is not set
#
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
# CONFIG_SCSI_TGT is not set
# CONFIG_SCSI_NETLINK is not set
CONFIG_SCSI_PROC_FS=y
#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=y
# CONFIG_CHR_DEV_ST is not set
# CONFIG_CHR_DEV_OSST is not set
# CONFIG_BLK_DEV_SR is not set
CONFIG_CHR_DEV_SG=y
# CONFIG_CHR_DEV_SCH is not set
# CONFIG_SCSI_MULTI_LUN is not set
# CONFIG_SCSI_CONSTANTS is not set
# CONFIG_SCSI_LOGGING is not set
# CONFIG_SCSI_SCAN_ASYNC is not set
#
# SCSI Transports
#
# CONFIG_SCSI_SPI_ATTRS is not set
# CONFIG_SCSI_FC_ATTRS is not set
# CONFIG_SCSI_ISCSI_ATTRS is not set
# CONFIG_SCSI_SAS_ATTRS is not set
# CONFIG_SCSI_SAS_LIBSAS is not set
# CONFIG_SCSI_SRP_ATTRS is not set
CONFIG_SCSI_LOWLEVEL=y
# CONFIG_ISCSI_TCP is not set
# CONFIG_ISCSI_BOOT_SYSFS is not set
# CONFIG_SCSI_UFSHCD is not set
# CONFIG_LIBFC is not set
# CONFIG_LIBFCOE is not set
# CONFIG_SCSI_DEBUG is not set
# CONFIG_SCSI_DH is not set
# CONFIG_SCSI_OSD_INITIATOR is not set
# CONFIG_ATA is not set
# CONFIG_MD is not set
# CONFIG_TARGET_CORE is not set
# CONFIG_NETDEVICES is not set
#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
# CONFIG_INPUT_POLLDEV is not set
# CONFIG_INPUT_SPARSEKMAP is not set
# CONFIG_INPUT_MATRIXKMAP is not set
#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=y
CONFIG_INPUT_MOUSEDEV_PSAUX=y
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
# CONFIG_INPUT_JOYDEV is not set
CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_EVBUG is not set
#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
# CONFIG_KEYBOARD_ADP5589 is not set
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_QT1070 is not set
# CONFIG_KEYBOARD_QT2160 is not set
# CONFIG_KEYBOARD_LKKBD is not set
CONFIG_KEYBOARD_GPIO=y
# CONFIG_KEYBOARD_TCA6416 is not set
# CONFIG_KEYBOARD_TCA8418 is not set
# CONFIG_KEYBOARD_MATRIX is not set
# CONFIG_KEYBOARD_LM8333 is not set
# CONFIG_KEYBOARD_MAX7359 is not set
# CONFIG_KEYBOARD_MCS is not set
# CONFIG_KEYBOARD_MPR121 is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_OPENCORES is not set
# CONFIG_KEYBOARD_SAMSUNG is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_XTKBD is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
CONFIG_INPUT_TOUCHSCREEN=y
# CONFIG_TOUCHSCREEN_ADS7846 is not set
# CONFIG_TOUCHSCREEN_AD7877 is not set
# CONFIG_TOUCHSCREEN_AD7879 is not set
CONFIG_TOUCHSCREEN_ATMEL_MXT=y
# CONFIG_TOUCHSCREEN_AUO_PIXCIR is not set
# CONFIG_TOUCHSCREEN_BU21013 is not set
# CONFIG_TOUCHSCREEN_CY8CTMG110 is not set
# CONFIG_TOUCHSCREEN_CYTTSP_CORE is not set
# CONFIG_TOUCHSCREEN_DYNAPRO is not set
# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
# CONFIG_TOUCHSCREEN_EETI is not set
# CONFIG_TOUCHSCREEN_FUJITSU is not set
# CONFIG_TOUCHSCREEN_ILI210X is not set
# CONFIG_TOUCHSCREEN_GUNZE is not set
# CONFIG_TOUCHSCREEN_ELO is not set
# CONFIG_TOUCHSCREEN_WACOM_W8001 is not set
# CONFIG_TOUCHSCREEN_WACOM_I2C is not set
# CONFIG_TOUCHSCREEN_MAX11801 is not set
CONFIG_TOUCHSCREEN_MCS5000=y
# CONFIG_TOUCHSCREEN_MMS114 is not set
# CONFIG_TOUCHSCREEN_MTOUCH is not set
# CONFIG_TOUCHSCREEN_INEXIO is not set
# CONFIG_TOUCHSCREEN_MK712 is not set
# CONFIG_TOUCHSCREEN_PENMOUNT is not set
# CONFIG_TOUCHSCREEN_EDT_FT5X06 is not set
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
# CONFIG_TOUCHSCREEN_PIXCIR is not set
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
# CONFIG_TOUCHSCREEN_TSC_SERIO is not set
# CONFIG_TOUCHSCREEN_TSC2005 is not set
# CONFIG_TOUCHSCREEN_TSC2007 is not set
# CONFIG_TOUCHSCREEN_W90X900 is not set
# CONFIG_TOUCHSCREEN_ST1232 is not set
# CONFIG_TOUCHSCREEN_TPS6507X is not set
# CONFIG_INPUT_MISC is not set
#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_SERIO_SERPORT=y
# CONFIG_SERIO_AMBAKMI is not set
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
# CONFIG_SERIO_ALTERA_PS2 is not set
# CONFIG_SERIO_PS2MULT is not set
# CONFIG_SERIO_ARC_PS2 is not set
# CONFIG_GAMEPORT is not set
#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_VT_CONSOLE_SLEEP=y
CONFIG_HW_CONSOLE=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_UNIX98_PTYS=y
# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=256
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_N_GSM is not set
# CONFIG_TRACE_SINK is not set
CONFIG_DEVKMEM=y
#
# Serial drivers
#
CONFIG_SERIAL_8250=y
# CONFIG_SERIAL_8250_CONSOLE is not set
CONFIG_SERIAL_8250_DMA=y
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
# CONFIG_SERIAL_8250_EXTENDED is not set
# CONFIG_SERIAL_8250_DW is not set
# CONFIG_SERIAL_8250_EM is not set
#
# Non-8250 serial port support
#
# CONFIG_SERIAL_AMBA_PL010 is not set
# CONFIG_SERIAL_AMBA_PL011 is not set
CONFIG_SERIAL_SAMSUNG=y
CONFIG_SERIAL_SAMSUNG_UARTS_4=y
CONFIG_SERIAL_SAMSUNG_UARTS=4
# CONFIG_SERIAL_SAMSUNG_DEBUG is not set
CONFIG_SERIAL_SAMSUNG_CONSOLE=y
# CONFIG_SERIAL_MAX3100 is not set
# CONFIG_SERIAL_MAX310X is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_TIMBERDALE is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_IFX6X60 is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_HVC_DCC is not set
# CONFIG_IPMI_HANDLER is not set
CONFIG_HW_RANDOM=y
# CONFIG_HW_RANDOM_TIMERIOMEM is not set
# CONFIG_HW_RANDOM_ATMEL is not set
# CONFIG_HW_RANDOM_EXYNOS is not set
# CONFIG_R3964 is not set
# CONFIG_RAW_DRIVER is not set
# CONFIG_TCG_TPM is not set
CONFIG_I2C=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
# CONFIG_I2C_CHARDEV is not set
# CONFIG_I2C_MUX is not set
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_ALGOBIT=y
#
# I2C Hardware Bus support
#
#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_CBUS_GPIO is not set
# CONFIG_I2C_DESIGNWARE_PLATFORM is not set
CONFIG_I2C_GPIO=y
# CONFIG_I2C_NOMADIK is not set
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PCA_PLATFORM is not set
# CONFIG_I2C_PXA_PCI is not set
CONFIG_HAVE_S3C2410_I2C=y
CONFIG_I2C_S3C2410=y
# CONFIG_I2C_SIMTEC is not set
# CONFIG_I2C_XILINX is not set
#
# External I2C/SMBus adapter drivers
#
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_TAOS_EVM is not set
#
# Other I2C/SMBus bus drivers
#
# CONFIG_I2C_STUB is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
CONFIG_SPI=y
# CONFIG_SPI_DEBUG is not set
CONFIG_SPI_MASTER=y
#
# SPI Master Controller Drivers
#
# CONFIG_SPI_ALTERA is not set
CONFIG_SPI_BITBANG=y
CONFIG_SPI_GPIO=y
# CONFIG_SPI_OC_TINY is not set
# CONFIG_SPI_PL022 is not set
# CONFIG_SPI_PXA2XX_PCI is not set
# CONFIG_SPI_SC18IS602 is not set
# CONFIG_SPI_XCOMM is not set
# CONFIG_SPI_XILINX is not set
# CONFIG_SPI_DESIGNWARE is not set
#
# SPI Protocol Masters
#
# CONFIG_SPI_SPIDEV is not set
# CONFIG_SPI_TLE62X0 is not set
# CONFIG_HSI is not set
#
# PPS support
#
# CONFIG_PPS is not set
#
# PPS generators support
#
#
# PTP clock support
#
# CONFIG_PTP_1588_CLOCK is not set
#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
# CONFIG_PTP_1588_CLOCK_PCH is not set
CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
CONFIG_ARCH_REQUIRE_GPIOLIB=y
CONFIG_GPIO_DEVRES=y
CONFIG_GPIOLIB=y
# CONFIG_DEBUG_GPIO is not set
CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_GENERIC=y
#
# Memory mapped GPIO drivers:
#
CONFIG_GPIO_GENERIC_PLATFORM=y
# CONFIG_GPIO_EM is not set
# CONFIG_GPIO_PL061 is not set
# CONFIG_GPIO_TS5500 is not set
#
# I2C GPIO expanders:
#
# CONFIG_GPIO_MAX7300 is not set
# CONFIG_GPIO_MAX732X is not set
# CONFIG_GPIO_PCF857X is not set
# CONFIG_GPIO_SX150X is not set
# CONFIG_GPIO_ADP5588 is not set
#
# PCI GPIO expanders:
#
#
# SPI GPIO expanders:
#
# CONFIG_GPIO_MAX7301 is not set
# CONFIG_GPIO_MCP23S08 is not set
# CONFIG_GPIO_MC33880 is not set
# CONFIG_GPIO_74X164 is not set
#
# AC97 GPIO expanders:
#
#
# MODULbus GPIO expanders:
#
#
# USB GPIO expanders:
#
# CONFIG_W1 is not set
# CONFIG_POWER_SUPPLY is not set
# CONFIG_POWER_AVS is not set
# CONFIG_HWMON is not set
# CONFIG_THERMAL is not set
# CONFIG_WATCHDOG is not set
CONFIG_SSB_POSSIBLE=y
#
# Sonics Silicon Backplane
#
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y
#
# Broadcom specific AMBA
#
# CONFIG_BCMA is not set
#
# Multifunction device drivers
#
CONFIG_MFD_CORE=y
# CONFIG_MFD_88PM860X is not set
# CONFIG_MFD_88PM800 is not set
# CONFIG_MFD_88PM805 is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_ASIC3 is not set
# CONFIG_MFD_TI_AM335X_TSCADC is not set
# CONFIG_HTC_EGPIO is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_HTC_I2CPLD is not set
# CONFIG_MFD_LM3533 is not set
# CONFIG_TPS6105X is not set
# CONFIG_TPS65010 is not set
# CONFIG_TPS6507X is not set
# CONFIG_MFD_TPS65217 is not set
# CONFIG_MFD_TPS6586X is not set
# CONFIG_MFD_TPS65910 is not set
# CONFIG_MFD_TPS65912_I2C is not set
# CONFIG_MFD_TPS65912_SPI is not set
# CONFIG_MFD_TPS80031 is not set
# CONFIG_TWL4030_CORE is not set
# CONFIG_TWL6040_CORE is not set
# CONFIG_MFD_STMPE is not set
# CONFIG_MFD_TC3589X is not set
# CONFIG_MFD_TMIO is not set
# CONFIG_MFD_T7L66XB is not set
# CONFIG_MFD_SMSC is not set
# CONFIG_MFD_TC6387XB is not set
# CONFIG_MFD_TC6393XB is not set
# CONFIG_PMIC_DA903X is not set
# CONFIG_MFD_DA9052_SPI is not set
# CONFIG_MFD_DA9052_I2C is not set
# CONFIG_MFD_DA9055 is not set
# CONFIG_PMIC_ADP5520 is not set
# CONFIG_MFD_LP8788 is not set
# CONFIG_MFD_MAX77686 is not set
# CONFIG_MFD_MAX77693 is not set
# CONFIG_MFD_MAX8907 is not set
# CONFIG_MFD_MAX8925 is not set
CONFIG_MFD_MAX8997=y
CONFIG_MFD_MAX8998=y
# CONFIG_MFD_SEC_CORE is not set
# CONFIG_MFD_ARIZONA_I2C is not set
# CONFIG_MFD_ARIZONA_SPI is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM831X_I2C is not set
# CONFIG_MFD_WM831X_SPI is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_WM8994 is not set
# CONFIG_MFD_PCF50633 is not set
# CONFIG_MFD_MC13XXX_SPI is not set
# CONFIG_MFD_MC13XXX_I2C is not set
# CONFIG_ABX500_CORE is not set
# CONFIG_EZX_PCAP is not set
# CONFIG_MFD_WL1273_CORE is not set
# CONFIG_MFD_TPS65090 is not set
# CONFIG_MFD_AAT2870_CORE is not set
# CONFIG_MFD_RC5T583 is not set
# CONFIG_MFD_PALMAS is not set
# CONFIG_MFD_RETU is not set
# CONFIG_MFD_AS3711 is not set
CONFIG_REGULATOR=y
# CONFIG_REGULATOR_DEBUG is not set
# CONFIG_REGULATOR_DUMMY is not set
CONFIG_REGULATOR_FIXED_VOLTAGE=y
# CONFIG_REGULATOR_VIRTUAL_CONSUMER is not set
# CONFIG_REGULATOR_USERSPACE_CONSUMER is not set
# CONFIG_REGULATOR_GPIO is not set
# CONFIG_REGULATOR_AD5398 is not set
# CONFIG_REGULATOR_FAN53555 is not set
# CONFIG_REGULATOR_ISL6271A is not set
# CONFIG_REGULATOR_MAX1586 is not set
# CONFIG_REGULATOR_MAX8649 is not set
# CONFIG_REGULATOR_MAX8660 is not set
CONFIG_REGULATOR_MAX8952=y
# CONFIG_REGULATOR_MAX8973 is not set
CONFIG_REGULATOR_MAX8997=y
CONFIG_REGULATOR_MAX8998=y
CONFIG_REGULATOR_LP3971=y
CONFIG_REGULATOR_LP3972=y
# CONFIG_REGULATOR_LP872X is not set
# CONFIG_REGULATOR_LP8755 is not set
# CONFIG_REGULATOR_TPS51632 is not set
# CONFIG_REGULATOR_TPS62360 is not set
# CONFIG_REGULATOR_TPS65023 is not set
# CONFIG_REGULATOR_TPS6507X is not set
# CONFIG_REGULATOR_TPS6524X is not set
# CONFIG_MEDIA_SUPPORT is not set
#
# Graphics support
#
# CONFIG_DRM is not set
# CONFIG_VGASTATE is not set
# CONFIG_VIDEO_OUTPUT_CONTROL is not set
CONFIG_FB=y
# CONFIG_FIRMWARE_EDID is not set
# CONFIG_FB_DDC is not set
# CONFIG_FB_BOOT_VESA_SUPPORT is not set
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
# CONFIG_FB_SYS_FILLRECT is not set
# CONFIG_FB_SYS_COPYAREA is not set
# CONFIG_FB_SYS_IMAGEBLIT is not set
# CONFIG_FB_FOREIGN_ENDIAN is not set
# CONFIG_FB_SYS_FOPS is not set
# CONFIG_FB_WMT_GE_ROPS is not set
# CONFIG_FB_SVGALIB is not set
# CONFIG_FB_MACMODES is not set
# CONFIG_FB_BACKLIGHT is not set
# CONFIG_FB_MODE_HELPERS is not set
# CONFIG_FB_TILEBLITTING is not set
#
# Frame buffer hardware drivers
#
# CONFIG_FB_ARMCLCD is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_TMIO is not set
CONFIG_FB_S3C=y
# CONFIG_FB_S3C_DEBUG_REGWRITE is not set
# CONFIG_FB_GOLDFISH is not set
# CONFIG_FB_VIRTUAL is not set
# CONFIG_FB_METRONOME is not set
# CONFIG_FB_BROADSHEET is not set
# CONFIG_FB_AUO_K190X is not set
# CONFIG_EXYNOS_VIDEO is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=y
# CONFIG_LCD_L4F00242T03 is not set
# CONFIG_LCD_LMS283GF05 is not set
# CONFIG_LCD_LTV350QV is not set
# CONFIG_LCD_ILI9320 is not set
# CONFIG_LCD_TDO24M is not set
# CONFIG_LCD_VGG2432A4 is not set
CONFIG_LCD_PLATFORM=y
# CONFIG_LCD_S6E63M0 is not set
CONFIG_LCD_LD9040=y
# CONFIG_LCD_AMS369FG06 is not set
# CONFIG_LCD_LMS501KF03 is not set
# CONFIG_LCD_HX8357 is not set
CONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_BACKLIGHT_GENERIC is not set
# CONFIG_BACKLIGHT_PWM is not set
# CONFIG_BACKLIGHT_ADP8860 is not set
# CONFIG_BACKLIGHT_ADP8870 is not set
# CONFIG_BACKLIGHT_LM3630 is not set
# CONFIG_BACKLIGHT_LM3639 is not set
# CONFIG_BACKLIGHT_LP855X is not set
#
# Console display driver support
#
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
# CONFIG_LOGO is not set
# CONFIG_SOUND is not set
#
# HID support
#
# CONFIG_HID is not set
#
# I2C HID support
#
# CONFIG_I2C_HID is not set
# CONFIG_USB_ARCH_HAS_OHCI is not set
CONFIG_USB_ARCH_HAS_EHCI=y
# CONFIG_USB_ARCH_HAS_XHCI is not set
CONFIG_USB_SUPPORT=y
CONFIG_USB_COMMON=y
CONFIG_USB_ARCH_HAS_HCD=y
# CONFIG_USB is not set
# CONFIG_USB_DWC3 is not set
# CONFIG_USB_CHIPIDEA is not set
#
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
#
# CONFIG_USB_HSIC_USB3503 is not set
#
# USB Physical Layer drivers
#
# CONFIG_OMAP_USB3 is not set
# CONFIG_OMAP_CONTROL_USB is not set
# CONFIG_USB_ISP1301 is not set
# CONFIG_USB_RCAR_PHY is not set
CONFIG_SAMSUNG_USBPHY=y
CONFIG_USB_GADGET=y
# CONFIG_USB_GADGET_DEBUG is not set
# CONFIG_USB_GADGET_DEBUG_FILES is not set
# CONFIG_USB_GADGET_DEBUG_FS is not set
CONFIG_USB_GADGET_VBUS_DRAW=2
CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS=2
#
# USB Peripheral Controller
#
# CONFIG_USB_FUSB300 is not set
# CONFIG_USB_R8A66597 is not set
CONFIG_USB_S3C_HSOTG=y
# CONFIG_USB_MV_UDC is not set
CONFIG_USB_GADGET_S3C_OTGD=y
# CONFIG_USB_M66592 is not set
# CONFIG_USB_NET2272 is not set
#
# NOTE: S3C OTG device role enables the controller driver below
#
CONFIG_USB_S3C_OTGD=y
CONFIG_USB_GADGET_S3C_OTGD_DMA_MODE=y
CONFIG_USB_GADGET_DUALSPEED=y
CONFIG_USB_LIBCOMPOSITE=y
# CONFIG_USB_ZERO is not set
CONFIG_USB_ETH=y
CONFIG_USB_ETH_RNDIS=y
# CONFIG_USB_ETH_EEM is not set
# CONFIG_USB_G_NCM is not set
# CONFIG_USB_GADGETFS is not set
# CONFIG_USB_FUNCTIONFS is not set
# CONFIG_USB_MASS_STORAGE is not set
# CONFIG_USB_G_SERIAL is not set
# CONFIG_USB_G_PRINTER is not set
# CONFIG_USB_CDC_COMPOSITE is not set
# CONFIG_USB_G_ACM_MS is not set
# CONFIG_USB_G_MULTI is not set
# CONFIG_USB_G_HID is not set
# CONFIG_USB_G_DBGP is not set
#
# OTG and related infrastructure
#
CONFIG_USB_OTG_UTILS=y
# CONFIG_USB_GPIO_VBUS is not set
# CONFIG_USB_ULPI is not set
# CONFIG_NOP_USB_XCEIV is not set
CONFIG_MMC=y
# CONFIG_MMC_DEBUG is not set
# CONFIG_MMC_UNSAFE_RESUME is not set
# CONFIG_MMC_CLKGATE is not set
#
# MMC/SD/SDIO Card Drivers
#
CONFIG_MMC_BLOCK=y
CONFIG_MMC_BLOCK_MINORS=8
# CONFIG_MMC_BLOCK_BOUNCE is not set
# CONFIG_SDIO_UART is not set
# CONFIG_MMC_TEST is not set
#
# MMC/SD/SDIO Host Controller Drivers
#
# CONFIG_MMC_ARMMMCI is not set
CONFIG_MMC_SDHCI=y
# CONFIG_MMC_SDHCI_PLTFM is not set
CONFIG_MMC_SDHCI_S3C=y
# CONFIG_MMC_SDHCI_PXAV3 is not set
# CONFIG_MMC_SDHCI_PXAV2 is not set
CONFIG_MMC_SDHCI_S3C_DMA=y
# CONFIG_MMC_SPI is not set
# CONFIG_MMC_DW is not set
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_EDAC is not set
CONFIG_RTC_LIB=y
# CONFIG_RTC_CLASS is not set
CONFIG_DMADEVICES=y
# CONFIG_DMADEVICES_DEBUG is not set
#
# DMA Devices
#
# CONFIG_AMBA_PL08X is not set
# CONFIG_DW_DMAC is not set
# CONFIG_TIMB_DMA is not set
CONFIG_PL330_DMA=y
CONFIG_DMA_ENGINE=y
#
# DMA Clients
#
# CONFIG_NET_DMA is not set
# CONFIG_ASYNC_TX_DMA is not set
# CONFIG_DMATEST is not set
# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set
#
# Virtio drivers
#
# CONFIG_VIRTIO_MMIO is not set
#
# Microsoft Hyper-V guest support
#
# CONFIG_STAGING is not set
CONFIG_CLKDEV_LOOKUP=y
#
# Hardware Spinlock drivers
#
CONFIG_CLKSRC_MMIO=y
# CONFIG_MAILBOX is not set
# CONFIG_IOMMU_SUPPORT is not set
#
# Remoteproc drivers
#
# CONFIG_STE_MODEM_RPROC is not set
#
# Rpmsg drivers
#
# CONFIG_VIRT_DRIVERS is not set
# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
CONFIG_PWM=y
CONFIG_PWM_SAMSUNG=y
CONFIG_ARM_VIC=y
CONFIG_ARM_VIC_NR=4
# CONFIG_IPACK_BUS is not set
#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
# CONFIG_EXT2_FS is not set
# CONFIG_EXT3_FS is not set
CONFIG_EXT4_FS=y
# CONFIG_EXT4_USE_FOR_EXT23 is not set
CONFIG_EXT4_FS_POSIX_ACL=y
# CONFIG_EXT4_FS_SECURITY is not set
# CONFIG_EXT4_DEBUG is not set
CONFIG_JBD2=y
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
CONFIG_FS_POSIX_ACL=y
CONFIG_FILE_LOCKING=y
CONFIG_FSNOTIFY=y
# CONFIG_DNOTIFY is not set
CONFIG_INOTIFY_USER=y
# CONFIG_FANOTIFY is not set
# CONFIG_QUOTA is not set
# CONFIG_QUOTACTL is not set
# CONFIG_AUTOFS4_FS is not set
# CONFIG_FUSE_FS is not set
CONFIG_GENERIC_ACL=y
#
# Caches
#
# CONFIG_FSCACHE is not set
#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
# CONFIG_UDF_FS is not set
#
# DOS/FAT/NT Filesystems
#
CONFIG_FAT_FS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
# CONFIG_NTFS_FS is not set
#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_TMPFS_XATTR=y
# CONFIG_HUGETLB_PAGE is not set
# CONFIG_CONFIGFS_FS is not set
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V2=y
CONFIG_NFS_V3=y
# CONFIG_NFS_V3_ACL is not set
# CONFIG_NFS_V4 is not set
# CONFIG_NFS_SWAP is not set
# CONFIG_NFSD is not set
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y
CONFIG_NFS_COMMON=y
CONFIG_SUNRPC=y
# CONFIG_SUNRPC_DEBUG is not set
# CONFIG_CEPH_FS is not set
# CONFIG_CIFS is not set
# CONFIG_NCP_FS is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
CONFIG_NLS_CODEPAGE_437=y
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
# CONFIG_NLS_MAC_ROMAN is not set
# CONFIG_NLS_MAC_CELTIC is not set
# CONFIG_NLS_MAC_CENTEURO is not set
# CONFIG_NLS_MAC_CROATIAN is not set
# CONFIG_NLS_MAC_CYRILLIC is not set
# CONFIG_NLS_MAC_GAELIC is not set
# CONFIG_NLS_MAC_GREEK is not set
# CONFIG_NLS_MAC_ICELAND is not set
# CONFIG_NLS_MAC_INUIT is not set
# CONFIG_NLS_MAC_ROMANIAN is not set
# CONFIG_NLS_MAC_TURKISH is not set
# CONFIG_NLS_UTF8 is not set
#
# Kernel hacking
#
CONFIG_PRINTK_TIME=y
CONFIG_DEFAULT_MESSAGE_LOGLEVEL=6
CONFIG_ENABLE_WARN_DEPRECATED=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_FRAME_WARN=1024
CONFIG_MAGIC_SYSRQ=y
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_READABLE_ASM is not set
# CONFIG_UNUSED_SYMBOLS is not set
CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_SECTION_MISMATCH is not set
CONFIG_DEBUG_KERNEL=y
# CONFIG_DEBUG_SHIRQ is not set
# CONFIG_LOCKUP_DETECTOR is not set
# CONFIG_PANIC_ON_OOPS is not set
CONFIG_PANIC_ON_OOPS_VALUE=0
CONFIG_DETECT_HUNG_TASK=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=60
# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0
CONFIG_SCHED_DEBUG=y
# CONFIG_SCHEDSTATS is not set
# CONFIG_TIMER_STATS is not set
# CONFIG_DEBUG_OBJECTS is not set
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_SLUB_STATS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
CONFIG_DEBUG_PREEMPT=y
CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_DEBUG_PI_LIST=y
# CONFIG_RT_MUTEX_TESTER is not set
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_MUTEXES=y
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
CONFIG_TRACE_IRQFLAGS=y
# CONFIG_DEBUG_ATOMIC_SLEEP is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
CONFIG_STACKTRACE=y
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_DEBUG_BUGVERBOSE=y
CONFIG_DEBUG_INFO=y
# CONFIG_DEBUG_INFO_REDUCED is not set
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_WRITECOUNT is not set
CONFIG_DEBUG_MEMORY_INIT=y
# CONFIG_DEBUG_LIST is not set
# CONFIG_TEST_LIST_SORT is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_DEBUG_CREDENTIALS is not set
CONFIG_FRAME_POINTER=y
# CONFIG_BOOT_PRINTK_DELAY is not set
#
# RCU Debugging
#
# CONFIG_PROVE_RCU_DELAY is not set
# CONFIG_SPARSE_RCU_POINTER is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_RCU_TRACE is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# CONFIG_LKDTM is not set
# CONFIG_NOTIFIER_ERROR_INJECTION is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_LATENCYTOP is not set
# CONFIG_DEBUG_PAGEALLOC is not set
CONFIG_NOP_TRACER=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_TRACER_MAX_TRACE=y
CONFIG_TRACE_CLOCK=y
CONFIG_RING_BUFFER=y
CONFIG_EVENT_TRACING=y
CONFIG_CONTEXT_SWITCH_TRACER=y
CONFIG_RING_BUFFER_ALLOW_SWAP=y
CONFIG_TRACING=y
CONFIG_GENERIC_TRACER=y
CONFIG_TRACING_SUPPORT=y
CONFIG_FTRACE=y
CONFIG_FUNCTION_TRACER=y
CONFIG_FUNCTION_GRAPH_TRACER=y
CONFIG_IRQSOFF_TRACER=y
CONFIG_PREEMPT_TRACER=y
CONFIG_SCHED_TRACER=y
# CONFIG_FTRACE_SYSCALLS is not set
# CONFIG_TRACER_SNAPSHOT is not set
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_PROFILE_ALL_BRANCHES is not set
# CONFIG_STACK_TRACER is not set
# CONFIG_BLK_DEV_IO_TRACE is not set
# CONFIG_PROBE_EVENTS is not set
CONFIG_DYNAMIC_FTRACE=y
# CONFIG_FUNCTION_PROFILER is not set
CONFIG_FTRACE_MCOUNT_RECORD=y
# CONFIG_FTRACE_STARTUP_TEST is not set
# CONFIG_RING_BUFFER_BENCHMARK is not set
# CONFIG_RBTREE_TEST is not set
# CONFIG_INTERVAL_TREE_TEST is not set
CONFIG_DYNAMIC_DEBUG=y
# CONFIG_DMA_API_DEBUG is not set
# CONFIG_ATOMIC64_SELFTEST is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
# CONFIG_TEST_KSTRTOX is not set
# CONFIG_STRICT_DEVMEM is not set
CONFIG_ARM_UNWIND=y
CONFIG_OLD_MCOUNT=y
CONFIG_DEBUG_USER=y
CONFIG_DEBUG_LL=y
# CONFIG_DEBUG_S3C_UART0 is not set
# CONFIG_DEBUG_S3C_UART1 is not set
CONFIG_DEBUG_S3C_UART2=y
# CONFIG_DEBUG_LL_UART_NONE is not set
# CONFIG_DEBUG_ICEDCC is not set
# CONFIG_DEBUG_SEMIHOSTING is not set
CONFIG_DEBUG_IMX_UART_PORT=1
CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
CONFIG_EARLY_PRINTK=y
# CONFIG_OC_ETM is not set
# CONFIG_PID_IN_CONTEXTIDR is not set
#
# Security options
#
CONFIG_KEYS=y
# CONFIG_ENCRYPTED_KEYS is not set
# CONFIG_KEYS_DEBUG_PROC_KEYS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_DEFAULT_SECURITY=""
CONFIG_CRYPTO=y
#
# Crypto core or helper
#
# CONFIG_CRYPTO_FIPS is not set
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG=m
CONFIG_CRYPTO_RNG2=m
# CONFIG_CRYPTO_MANAGER is not set
# CONFIG_CRYPTO_MANAGER2 is not set
# CONFIG_CRYPTO_USER is not set
# CONFIG_CRYPTO_GF128MUL is not set
# CONFIG_CRYPTO_NULL is not set
# CONFIG_CRYPTO_CRYPTD is not set
# CONFIG_CRYPTO_AUTHENC is not set
# CONFIG_CRYPTO_TEST is not set
#
# Authenticated Encryption with Associated Data
#
# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_GCM is not set
# CONFIG_CRYPTO_SEQIV is not set
#
# Block modes
#
# CONFIG_CRYPTO_CBC is not set
# CONFIG_CRYPTO_CTR is not set
# CONFIG_CRYPTO_CTS is not set
# CONFIG_CRYPTO_ECB is not set
# CONFIG_CRYPTO_LRW is not set
# CONFIG_CRYPTO_PCBC is not set
# CONFIG_CRYPTO_XTS is not set
#
# Hash modes
#
# CONFIG_CRYPTO_HMAC is not set
# CONFIG_CRYPTO_XCBC is not set
# CONFIG_CRYPTO_VMAC is not set
#
# Digest
#
CONFIG_CRYPTO_CRC32C=y
# CONFIG_CRYPTO_CRC32 is not set
# CONFIG_CRYPTO_GHASH is not set
# CONFIG_CRYPTO_MD4 is not set
# CONFIG_CRYPTO_MD5 is not set
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_RMD128 is not set
# CONFIG_CRYPTO_RMD160 is not set
# CONFIG_CRYPTO_RMD256 is not set
# CONFIG_CRYPTO_RMD320 is not set
# CONFIG_CRYPTO_SHA1 is not set
# CONFIG_CRYPTO_SHA1_ARM is not set
# CONFIG_CRYPTO_SHA256 is not set
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_TGR192 is not set
# CONFIG_CRYPTO_WP512 is not set
#
# Ciphers
#
CONFIG_CRYPTO_AES=y
# CONFIG_CRYPTO_AES_ARM is not set
# CONFIG_CRYPTO_ANUBIS is not set
# CONFIG_CRYPTO_ARC4 is not set
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_CAMELLIA is not set
# CONFIG_CRYPTO_CAST5 is not set
# CONFIG_CRYPTO_CAST6 is not set
# CONFIG_CRYPTO_DES is not set
# CONFIG_CRYPTO_FCRYPT is not set
# CONFIG_CRYPTO_KHAZAD is not set
# CONFIG_CRYPTO_SALSA20 is not set
# CONFIG_CRYPTO_SEED is not set
# CONFIG_CRYPTO_SERPENT is not set
# CONFIG_CRYPTO_TEA is not set
# CONFIG_CRYPTO_TWOFISH is not set
#
# Compression
#
CONFIG_CRYPTO_DEFLATE=y
# CONFIG_CRYPTO_ZLIB is not set
CONFIG_CRYPTO_LZO=y
#
# Random Number Generation
#
CONFIG_CRYPTO_ANSI_CPRNG=m
# CONFIG_CRYPTO_USER_API_HASH is not set
# CONFIG_CRYPTO_USER_API_SKCIPHER is not set
CONFIG_CRYPTO_HW=y
# CONFIG_CRYPTO_DEV_S5P is not set
# CONFIG_ASYMMETRIC_KEY_TYPE is not set
CONFIG_BINARY_PRINTF=y
#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_IO=y
CONFIG_CRC_CCITT=y
CONFIG_CRC16=y
# CONFIG_CRC_T10DIF is not set
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
# CONFIG_CRC7 is not set
CONFIG_LIBCRC32C=y
# CONFIG_CRC8 is not set
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_XZ_DEC=y
CONFIG_XZ_DEC_X86=y
CONFIG_XZ_DEC_POWERPC=y
CONFIG_XZ_DEC_IA64=y
CONFIG_XZ_DEC_ARM=y
CONFIG_XZ_DEC_ARMTHUMB=y
CONFIG_XZ_DEC_SPARC=y
CONFIG_XZ_DEC_BCJ=y
# CONFIG_XZ_DEC_TEST is not set
CONFIG_HAS_IOMEM=y
CONFIG_HAS_DMA=y
CONFIG_DQL=y
CONFIG_NLATTR=y
CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
# CONFIG_AVERAGE is not set
# CONFIG_CORDIC is not set
# CONFIG_DDR is not set
# CONFIG_VIRTUALIZATION is not set
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] net: sk == 0xffffffff fix - not for commit
2014-01-16 15:21 ` Andrzej Pietrasiewicz
@ 2014-01-16 16:29 ` Eric Dumazet
2014-01-17 12:18 ` Andrzej Pietrasiewicz
0 siblings, 1 reply; 11+ messages in thread
From: Eric Dumazet @ 2014-01-16 16:29 UTC (permalink / raw)
To: Andrzej Pietrasiewicz
Cc: linux-kernel, linux-usb, Kyungmin Park, Felipe Balbi,
Greg Kroah-Hartman, Marek Szyprowski, Michal Nazarewicz,
David S. Miller, Alexey Kuznetsov, James Morris,
Hideaki YOSHIFUJI, Patrick McHardy, netdev
On Thu, 2014-01-16 at 16:21 +0100, Andrzej Pietrasiewicz wrote:
> W dniu 10.12.2013 15:25, Eric Dumazet pisze:
> > On Tue, 2013-12-10 at 07:55 +0100, Andrzej Pietrasiewicz wrote:
> >> W dniu 09.12.2013 16:31, Eric Dumazet pisze:
> >>> On Mon, 2013-12-09 at 12:47 +0100, Andrzej Pietrasiewicz wrote:
> >>>> NOT FOR COMMITTING TO MAINLINE.
> >>>>
> >>>> With g_ether loaded the sk occasionally becomes 0xffffffff.
> >>>> It happens usually after transferring few hundreds of kilobytes to few
> >>>> tens of megabytes. If sk is 0xffffffff then dereferencing it causes
> >>>> kernel panic.
> >>>>
> >>>> This is a *workaround*. I don't know enough net code to understand the core
> >>>> of the problem. However, with this patch applied the problems are gone,
> >>>> or at least pushed farther away.
> >>>
> >>> Is it happening on SMP or UP ?
> >>
> >> UP build, S5PC110
> >
> > OK
> >
> > I believe you need additional debugging to track the exact moment
> > 0xffffffff is fed to 'sk'
> >
> > It looks like a very strange bug, involving a problem in some assembly
> > helper, register save/restore, compiler bug or stack corruption or
> > something.
> >
>
> I started with adding WARN_ON(sk == 0xffffffff); just before return in
> __inet_lookup_established(), and the problem was gone. So this looks
> very strange, like a toolchain problem.
Or a timing issue. Adding a WARN_ON() adds extra instructions and might
really change the assembly output.
>
> I used gcc-linaro-arm-linux-gnueabihf-4.8-2013.05.
>
> If I change the toolchain to
>
> gcc-linaro-arm-linux-gnueabihf-4.7-2013.04-20130415
>
> the problem seems to have gone away.
Its totally possible some barrier was not properly handled by the
compiler. You could disassemble the function on both toolchains and
try to spot the issue.
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] net: sk == 0xffffffff fix - not for commit
2013-12-09 11:47 [PATCH] net: sk == 0xffffffff fix - not for commit Andrzej Pietrasiewicz
2013-12-09 15:31 ` Eric Dumazet
@ 2014-01-17 0:01 ` Andrew Ruder
2014-01-24 13:38 ` Andrew Ruder
2 siblings, 0 replies; 11+ messages in thread
From: Andrew Ruder @ 2014-01-17 0:01 UTC (permalink / raw)
To: Andrzej Pietrasiewicz
Cc: linux-kernel, linux-usb, Kyungmin Park, Felipe Balbi,
Greg Kroah-Hartman, Marek Szyprowski, Michal Nazarewicz,
David S. Miller, Alexey Kuznetsov, James Morris,
Hideaki YOSHIFUJI, Patrick McHardy, netdev
On Mon, Dec 09, 2013 at 12:47:52PM +0100, Andrzej Pietrasiewicz wrote:
> With g_ether loaded the sk occasionally becomes 0xffffffff.
> It happens usually after transferring few hundreds of kilobytes to few
> tens of megabytes. If sk is 0xffffffff then dereferencing it causes
> kernel panic.
Don't know if this is relevant but I had this very similar stack trace
come up a few days ago (below). I am working on a PXA 270/xscale with
gcc version 4.8.2 (Buildroot 2013.11-rc1-00028-gf388663). Going to try
to see if I can reproduce it a little more readily before I start trying
to narrow down what is causing it.
===
Unable to handle kernel NULL pointer dereference at virtual address 00000011
pgd = d18e0000
[00000011] *pgd=a6d03831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT ARM
Modules linked in: zeusvirt(O) zeus16550(O) 8390p ipv6
CPU: 0 PID: 2365 Comm: sshd Tainted: G O 3.12.0+ #201
task: d7216f00 ti: d7144000 task.ti: d7144000
PC is at tcp_v4_early_demux+0xe8/0x154
LR is at __inet_lookup_established+0x1bc/0x2e0
pc : [<c0341cfc>] lr : [<c0329bd8>] psr: a0000013
sp : d7145b20 ip : d7145ae8 fp : d7145b44
r10: c0576c28 r9 : 00000008 r8 : d7998800
r7 : d7063800 r6 : c6cf2480 r5 : ffffffff r4 : c6cf2480
r3 : c02ec018 r2 : d7145ad0 r1 : d7b66a28 r0 : ffffffff
Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 0000397f Table: b18e0000 DAC: 00000015
Process sshd (pid: 2365, stack limit = 0xd71441c8)
Stack: (0xd7145b20 to 0xd7146000)
5b20: 17bf3f0a 00000016 00000003 c0026d90 d71f4634 d71f4600 d7145b6c d7145b48
5b40: c03211b4 c0341c20 000005ea d7bb0538 d7063800 00000034 d71f4600 c6cf2480
5b60: d7145b9c d7145b70 c03218dc c0321158 00001001 00000000 c0576c1c 00000000
5b80: c0577e84 c0576c14 00000000 00000000 d7145be4 d7145ba0 c02fae04 c03215d4
5ba0: c0590330 c057fc08 d7145bfc c6cf2480 c02571a0 c0576c28 000007e1 c05a3dc0
5bc0: 00000000 00000001 c05a3d60 c05a3d74 c05a3d60 c05a3d68 d7145bfc d7145be8
5be0: c02fb990 c02fa8f0 c05a3dc0 00000000 d7145c24 d7145c00 c02fc46c c02fb968
5c00: c02fc3dc c05a3dc0 c05a3d60 00000001 0000012c 00000040 d7145c64 d7145c28
5c20: c02fbcd0 c02fc3e8 00000000 d78af3c0 d7145c5c 00008d99 00000000 00000001
5c40: c05a81f0 00000003 00000100 3fa57e1c d7144028 c05a81ec d7145cb4 d7145c68
5c60: c0026a44 c02fbc10 d7145c8c d7145c78 c00538dc c0056ce4 00000000 00008d98
5c80: 00400100 0000000a c0228594 60000093 c0590330 00000000 d7145d54 00000001
5ca0: d7bb0480 000005b4 d7145ccc d7145cb8 c0026ca4 c00268f4 00000000 d7144010
5cc0: d7145ce4 d7145cd0 c0026f58 c0026c58 000000ab 0000001a d7145d04 d7145ce8
5ce0: c000f7d0 c0026ed0 00140000 d7145d20 a0000013 ffffffff d7145d1c d7145d08
5d00: c00085bc c000f768 c02f0048 c00ca7d8 d7145d7c d7145d20 c03a7dc0 c0008590
5d20: 000118ed 00000000 c05a474c c05d41cc d7bb0180 d18ed800 d7801080 000006a3
5d40: 00000001 d7bb0480 000005b4 d7145d7c d7145d80 d7145d68 c02f0048 c00ca7d8
5d60: a0000013 ffffffff c05a4738 d7bb0180 d7145dac d7145d80 c02f0048 c00ca7b0
5d80: 00000001 00c63fc0 d7b66a00 d7b66a00 00004040 000005b4 00000000 d7b66a00
5da0: d7145dcc d7145db0 c032e340 c02effd0 d7145e98 00004040 0008c414 00000000
5dc0: d7145e54 d7145dd0 c032f368 c032e310 d7145e24 c02ea81c c03a6040 c03a9c6c
5de0: 00000000 00000000 d7145ee8 00000000 000005b4 00000000 d7b66adc 00000000
5e00: 00000000 d7144000 00001854 000005b4 000027ec 00000040 d7116d80 000005b4
5e20: 00000000 00000000 d7145e6c d7b66a00 d7145ee8 d7145e98 00004040 00004040
5e40: 00004040 00020000 d7145e74 d7145e58 c03526c8 c032eb0c d7145e78 d7116d80
5e60: d7145ee0 d7116d80 d7145ed4 d7145e78 c02e63a4 c0352688 c05a3dc0 d7142000
5e80: 00000040 00004040 d76701c0 d7145ee0 00000000 d7145e98 00000000 00000000
5ea0: d7145ee0 00000001 00000000 00000000 00000040 d7145ee8 c6cf2900 00000000
5ec0: 00000000 d7145f78 d7145f44 d7145ed8 c00d1c64 c02e62e4 00000000 00000000
5ee0: 00089c28 00004040 d7116d80 00000000 00000000 d7145e78 d7216f00 00000000
5f00: 00000000 00000000 00000000 00000000 00004040 00000000 00000000 00000000
5f20: 00089c28 d7116d80 00089c28 d7145f78 00004040 00089c28 d7145f74 d7145f48
5f40: c00d23a0 c00d1bf4 00000000 00000000 00000000 00000000 d7116d80 00000000
5f60: 00089c28 00004040 d7145fa4 d7145f78 c00d2948 c00d22c0 00000000 00000000
5f80: beed167c 00000003 000614dc 00000004 c000ea28 d7144000 00000000 d7145fa8
5fa0: c000e7e0 c00d2908 beed167c 00000003 00000003 00089c28 00004040 beed167c
5fc0: beed167c 00000003 000614dc 00000004 00089c28 00060a88 0000093e beed17a0
5fe0: beed167c beed1648 00029910 b6dc821c 60000010 00000003 ffffffff ffffffff
[<c0341cfc>] (tcp_v4_early_demux+0xe8/0x154) from [<c03211b4>] (ip_rcv_finish+0x68/0x2c0)
[<c03211b4>] (ip_rcv_finish+0x68/0x2c0) from [<c03218dc>] (ip_rcv+0x314/0x398)
[<c03218dc>] (ip_rcv+0x314/0x398) from [<c02fae04>] (__netif_receive_skb_core+0x520/0x5d8)
[<c02fae04>] (__netif_receive_skb_core+0x520/0x5d8) from [<c02fb990>] (__netif_receive_skb+0x34/0x88)
[<c02fb990>] (__netif_receive_skb+0x34/0x88) from [<c02fc46c>] (process_backlog+0x90/0x148)
[<c02fc46c>] (process_backlog+0x90/0x148) from [<c02fbcd0>] (net_rx_action+0xcc/0x258)
[<c02fbcd0>] (net_rx_action+0xcc/0x258) from [<c0026a44>] (__do_softirq+0x15c/0x2e0)
[<c0026a44>] (__do_softirq+0x15c/0x2e0) from [<c0026ca4>] (do_softirq+0x58/0x64)
[<c0026ca4>] (do_softirq+0x58/0x64) from [<c0026f58>] (irq_exit+0x94/0xf0)
[<c0026f58>] (irq_exit+0x94/0xf0) from [<c000f7d0>] (handle_IRQ+0x74/0x90)
[<c000f7d0>] (handle_IRQ+0x74/0x90) from [<c00085bc>] (ichp_handle_irq+0x38/0x40)
[<c00085bc>] (ichp_handle_irq+0x38/0x40) from [<c03a7dc0>] (__irq_svc+0x40/0x6c)
Exception stack(0xd7145d20 to 0xd7145d68)
5d20: 000118ed 00000000 c05a474c c05d41cc d7bb0180 d18ed800 d7801080 000006a3
5d40: 00000001 d7bb0480 000005b4 d7145d7c d7145d80 d7145d68 c02f0048 c00ca7d8
5d60: a0000013 ffffffff
[<c03a7dc0>] (__irq_svc+0x40/0x6c) from [<c00ca7d8>] (ksize+0x34/0xc8)
[<c00ca7d8>] (ksize+0x34/0xc8) from [<c02f0048>] (__alloc_skb+0x84/0x15c)
[<c02f0048>] (__alloc_skb+0x84/0x15c) from [<c032e340>] (sk_stream_alloc_skb+0x3c/0x108)
[<c032e340>] (sk_stream_alloc_skb+0x3c/0x108) from [<c032f368>] (tcp_sendmsg+0x868/0xd34)
[<c032f368>] (tcp_sendmsg+0x868/0xd34) from [<c03526c8>] (inet_sendmsg+0x4c/0x78)
[<c03526c8>] (inet_sendmsg+0x4c/0x78) from [<c02e63a4>] (sock_aio_write+0xcc/0xdc)
[<c02e63a4>] (sock_aio_write+0xcc/0xdc) from [<c00d1c64>] (do_sync_write+0x7c/0xa0)
[<c00d1c64>] (do_sync_write+0x7c/0xa0) from [<c00d23a0>] (vfs_write+0xec/0x194)
[<c00d23a0>] (vfs_write+0xec/0x194) from [<c00d2948>] (SyS_write+0x4c/0x7c)
[<c00d2948>] (SyS_write+0x4c/0x7c) from [<c000e7e0>] (ret_fast_syscall+0x0/0x2c)
Code: 0a000019 e59f306c e5845010 e5843068 (e5d53012)
---[ end trace 5a028e59aa5bc81a ]---
Kernel panic - not syncing: Fatal exception in interrupt
===
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] net: sk == 0xffffffff fix - not for commit
2014-01-16 16:29 ` Eric Dumazet
@ 2014-01-17 12:18 ` Andrzej Pietrasiewicz
2014-01-17 12:47 ` Andrzej Pietrasiewicz
0 siblings, 1 reply; 11+ messages in thread
From: Andrzej Pietrasiewicz @ 2014-01-17 12:18 UTC (permalink / raw)
To: Eric Dumazet
Cc: linux-kernel, linux-usb, Kyungmin Park, Felipe Balbi,
Greg Kroah-Hartman, Marek Szyprowski, Michal Nazarewicz,
David S. Miller, Alexey Kuznetsov, James Morris,
Hideaki YOSHIFUJI, Patrick McHardy, netdev
W dniu 16.01.2014 17:29, Eric Dumazet pisze:
> On Thu, 2014-01-16 at 16:21 +0100, Andrzej Pietrasiewicz wrote:
>> W dniu 10.12.2013 15:25, Eric Dumazet pisze:
>>> On Tue, 2013-12-10 at 07:55 +0100, Andrzej Pietrasiewicz wrote:
>>>> W dniu 09.12.2013 16:31, Eric Dumazet pisze:
>>>>> On Mon, 2013-12-09 at 12:47 +0100, Andrzej Pietrasiewicz wrote:
>>>>>> NOT FOR COMMITTING TO MAINLINE.
>>>>>>
>>>>>> With g_ether loaded the sk occasionally becomes 0xffffffff.
>>>>>> It happens usually after transferring few hundreds of kilobytes to few
>>>>>> tens of megabytes. If sk is 0xffffffff then dereferencing it causes
>>>>>> kernel panic.
>>>>>>
>>>>>> This is a *workaround*. I don't know enough net code to understand the core
>>>>>> of the problem. However, with this patch applied the problems are gone,
>>>>>> or at least pushed farther away.
>>>>>
>>>>> Is it happening on SMP or UP ?
>>>>
>>>> UP build, S5PC110
>>>
>>> OK
>>>
>>> I believe you need additional debugging to track the exact moment
>>> 0xffffffff is fed to 'sk'
>>>
>>> It looks like a very strange bug, involving a problem in some assembly
>>> helper, register save/restore, compiler bug or stack corruption or
>>> something.
>>>
>>
>> I started with adding WARN_ON(sk == 0xffffffff); just before return in
>> __inet_lookup_established(), and the problem was gone. So this looks
>> very strange, like a toolchain problem.
>
> Or a timing issue. Adding a WARN_ON() adds extra instructions and might
> really change the assembly output.
>
>>
>> I used gcc-linaro-arm-linux-gnueabihf-4.8-2013.05.
>>
>> If I change the toolchain to
>>
>> gcc-linaro-arm-linux-gnueabihf-4.7-2013.04-20130415
>>
>> the problem seems to have gone away.
>
> Its totally possible some barrier was not properly handled by the
> compiler. You could disassemble the function on both toolchains and
> try to spot the issue.
>
So I gave it a try.
Below is a part of assembly code (ARM) which corresponds to the last
lines of the __inet_lookup_established():
C source:
=========
found:
rcu_read_unlock();
return sk;
}
assembly for toolchain 4.7:
===========================
c0333bb8: ebf4bb6e bl c0062978 <__rcu_read_unlock>
c0333bbc: e51b0030 ldr r0, [fp, #-48] ; 0x30
c0333bc0: e24bd028 sub sp, fp, #40 ; 0x28
c0333bc4: e89daff0 ldm sp, {r4, r5, r6, r7, r8, r9, sl, fp, sp, pc}
c0333bc8: e5132018 ldr r2, [r3, #-24]
assembly for toolchain 4.8:
===========================
c033ff5c: ebf4927e bl c006495c <__rcu_read_unlock>
c033ff60: e24bd028 sub sp, fp, #40 ; 0x28
c033ff64: e51b0030 ldr r0, [fp, #-48] ; 0x30
c033ff68: e89daff0 ldm sp, {r4, r5, r6, r7, r8, r9, sl, fp, sp, pc}
c033ff6c: e5113018 ldr r3, [r1, #-24]
What can be seen is that the usage of registers is slightly different,
and, what is more important, the _order_ of ldr/sub is different.
Now, if I swap the instructions at offsets c033ff60 and c033ff64
in the 4.8-generated vmlinux, the problem seems gone! Well, at least
the binary behaves the same way as the 4.7-generated one.
Here is a _hypothesis_ of what _might_ be happening:
The function in question puts its return value in the register r0.
In both cases the return value is fetched from a memory location
relative #-48 to what the frame pointer points to. However,
in the 4.7-generated binary the ldr executes in the branch delay slot,
whereas in the 4.8-generated binary it is the sub which executes
in the branch delay slot. That way, in the 4.7-generated binary the return
value is fetched before __rcu_read_unlock begins, but in the
4.8-generated binary it is fetched some time later. Which might be
enough for someone else to schedule in and break the data to be
copied to r0 and returned from the function.
As I said, this is just a hypothesis.
AP
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] net: sk == 0xffffffff fix - not for commit
2014-01-17 12:18 ` Andrzej Pietrasiewicz
@ 2014-01-17 12:47 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 11+ messages in thread
From: Andrzej Pietrasiewicz @ 2014-01-17 12:47 UTC (permalink / raw)
To: Eric Dumazet
Cc: linux-kernel, linux-usb, Kyungmin Park, Felipe Balbi,
Greg Kroah-Hartman, Marek Szyprowski, Michal Nazarewicz,
David S. Miller, Alexey Kuznetsov, James Morris,
Hideaki YOSHIFUJI, Patrick McHardy, netdev
W dniu 17.01.2014 13:18, Andrzej Pietrasiewicz pisze:
> W dniu 16.01.2014 17:29, Eric Dumazet pisze:
>> On Thu, 2014-01-16 at 16:21 +0100, Andrzej Pietrasiewicz wrote:
>>> W dniu 10.12.2013 15:25, Eric Dumazet pisze:
>>>> On Tue, 2013-12-10 at 07:55 +0100, Andrzej Pietrasiewicz wrote:
>>>>> W dniu 09.12.2013 16:31, Eric Dumazet pisze:
>>>>>> On Mon, 2013-12-09 at 12:47 +0100, Andrzej Pietrasiewicz wrote:
>>>>>>> NOT FOR COMMITTING TO MAINLINE.
>>>>>>>
>>>>>>> With g_ether loaded the sk occasionally becomes 0xffffffff.
>>>>>>> It happens usually after transferring few hundreds of kilobytes to few
>>>>>>> tens of megabytes. If sk is 0xffffffff then dereferencing it causes
>>>>>>> kernel panic.
>>>>>>>
>>>>>>> This is a *workaround*. I don't know enough net code to understand the core
>>>>>>> of the problem. However, with this patch applied the problems are gone,
>>>>>>> or at least pushed farther away.
>>>>>>
>>>>>> Is it happening on SMP or UP ?
>>>>>
>>>>> UP build, S5PC110
>>>>
>>>> OK
>>>>
>>>> I believe you need additional debugging to track the exact moment
>>>> 0xffffffff is fed to 'sk'
>>>>
>>>> It looks like a very strange bug, involving a problem in some assembly
>>>> helper, register save/restore, compiler bug or stack corruption or
>>>> something.
>>>>
>>>
>>> I started with adding WARN_ON(sk == 0xffffffff); just before return in
>>> __inet_lookup_established(), and the problem was gone. So this looks
>>> very strange, like a toolchain problem.
>>
>> Or a timing issue. Adding a WARN_ON() adds extra instructions and might
>> really change the assembly output.
>>
>>>
>>> I used gcc-linaro-arm-linux-gnueabihf-4.8-2013.05.
>>>
>>> If I change the toolchain to
>>>
>>> gcc-linaro-arm-linux-gnueabihf-4.7-2013.04-20130415
>>>
>>> the problem seems to have gone away.
>>
>> Its totally possible some barrier was not properly handled by the
>> compiler. You could disassemble the function on both toolchains and
>> try to spot the issue.
>>
>
> So I gave it a try.
>
> Below is a part of assembly code (ARM) which corresponds to the last
> lines of the __inet_lookup_established():
>
> C source:
> =========
> found:
> rcu_read_unlock();
> return sk;
> }
>
> assembly for toolchain 4.7:
> ===========================
> c0333bb8: ebf4bb6e bl c0062978 <__rcu_read_unlock>
> c0333bbc: e51b0030 ldr r0, [fp, #-48] ; 0x30
> c0333bc0: e24bd028 sub sp, fp, #40 ; 0x28
> c0333bc4: e89daff0 ldm sp, {r4, r5, r6, r7, r8, r9, sl, fp, sp, pc}
> c0333bc8: e5132018 ldr r2, [r3, #-24]
>
>
> assembly for toolchain 4.8:
> ===========================
> c033ff5c: ebf4927e bl c006495c <__rcu_read_unlock>
> c033ff60: e24bd028 sub sp, fp, #40 ; 0x28
> c033ff64: e51b0030 ldr r0, [fp, #-48] ; 0x30
> c033ff68: e89daff0 ldm sp, {r4, r5, r6, r7, r8, r9, sl, fp, sp, pc}
> c033ff6c: e5113018 ldr r3, [r1, #-24]
>
> What can be seen is that the usage of registers is slightly different,
> and, what is more important, the _order_ of ldr/sub is different.
> Now, if I swap the instructions at offsets c033ff60 and c033ff64
> in the 4.8-generated vmlinux, the problem seems gone! Well, at least
> the binary behaves the same way as the 4.7-generated one.
>
> Here is a _hypothesis_ of what _might_ be happening:
>
> The function in question puts its return value in the register r0.
> In both cases the return value is fetched from a memory location
> relative #-48 to what the frame pointer points to. However,
> in the 4.7-generated binary the ldr executes in the branch delay slot,
> whereas in the 4.8-generated binary it is the sub which executes
> in the branch delay slot. That way, in the 4.7-generated binary the return
> value is fetched before __rcu_read_unlock begins, but in the
> 4.8-generated binary it is fetched some time later. Which might be
> enough for someone else to schedule in and break the data to be
> copied to r0 and returned from the function.
>
> As I said, this is just a hypothesis.
>
Please disregard what I have written.
There is no delay slot on ARM :O
A nice hypothesis, though ;)
AP
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] net: sk == 0xffffffff fix - not for commit
2013-12-09 11:47 [PATCH] net: sk == 0xffffffff fix - not for commit Andrzej Pietrasiewicz
2013-12-09 15:31 ` Eric Dumazet
2014-01-17 0:01 ` Andrew Ruder
@ 2014-01-24 13:38 ` Andrew Ruder
2014-01-24 14:15 ` Andrew Ruder
2 siblings, 1 reply; 11+ messages in thread
From: Andrew Ruder @ 2014-01-24 13:38 UTC (permalink / raw)
To: Andrzej Pietrasiewicz
Cc: linux-kernel, linux-usb, Kyungmin Park, Felipe Balbi,
Greg Kroah-Hartman, Marek Szyprowski, Michal Nazarewicz,
David S. Miller, Alexey Kuznetsov, James Morris,
Hideaki YOSHIFUJI, Patrick McHardy, netdev
Actually found what looks to be a fix for this in another thread.
http://www.mail-archive.com/linux-kernel@vger.kernel.org/msg574770.html
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58854
Cheers,
Andy
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH] net: sk == 0xffffffff fix - not for commit
2014-01-24 13:38 ` Andrew Ruder
@ 2014-01-24 14:15 ` Andrew Ruder
0 siblings, 0 replies; 11+ messages in thread
From: Andrew Ruder @ 2014-01-24 14:15 UTC (permalink / raw)
To: Andrzej Pietrasiewicz, linux-kernel, linux-usb, Kyungmin Park,
Felipe Balbi, Greg Kroah-Hartman, Marek Szyprowski,
Michal Nazarewicz, David S. Miller, Alexey Kuznetsov,
James Morris, Hideaki YOSHIFUJI, Patrick McHardy, netdev
On Fri, Jan 24, 2014 at 07:38:31AM -0600, Andrew Ruder wrote:
> http://www.mail-archive.com/linux-kernel@vger.kernel.org/msg574770.html
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58854
Just a little further confirmation. This appears in
__inet_lookup_established as the last four instructions before
returning.
<+440>: bl <__rcu_read_unlock>
<+444>: sub sp, r11, #40 ; 0x28
<+448>: ldr r0, [r11, #-48] ; 0x30
<+452>: ldm sp, {r4, r5, r6, r7, r8, r9, r10, r11, sp, pc}
^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2014-01-24 14:18 UTC | newest]
Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-12-09 11:47 [PATCH] net: sk == 0xffffffff fix - not for commit Andrzej Pietrasiewicz
2013-12-09 15:31 ` Eric Dumazet
2013-12-10 6:55 ` Andrzej Pietrasiewicz
2013-12-10 14:25 ` Eric Dumazet
2014-01-16 15:21 ` Andrzej Pietrasiewicz
2014-01-16 16:29 ` Eric Dumazet
2014-01-17 12:18 ` Andrzej Pietrasiewicz
2014-01-17 12:47 ` Andrzej Pietrasiewicz
2014-01-17 0:01 ` Andrew Ruder
2014-01-24 13:38 ` Andrew Ruder
2014-01-24 14:15 ` Andrew Ruder
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).