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Message-ID: <20131008171522.GA29277@localhost>
Date: Wed, 9 Oct 2013 01:15:22 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
Richard Henderson <rth@...ddle.net>,
Jakub Jelinek <jakub@...hat.com>,
Oleg Nesterov <oleg@...hat.com>,
Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [x86] BUG: unable to handle kernel NULL pointer dereference at (null)
Hi all,
I managed to find and bisect down some more different call traces to
the same commit 0c44c2d0f ("x86: Use asm goto to implement better
modify_and_test() functions"). Hope this helps.
The below dmesg chunks represent 25 bad kernel boots. This is an very
reproducible bug: this kernel has no good boots at all.
The kernel is compiled from 0c44c2d0f with kconfig
i386-randconfig-r8-1005 (attached). Also attached one full dmesg and
the bisect log.
dmesg-quantal-ant-2:20131009002432:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 27.865422] ------------[ cut here ]------------
[ 27.865982] Kernel BUG at c10563af [verbose debug info unavailable]
[ 27.866625] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 27.867363] Modules linked in:
[ 27.867363] CPU: 0 PID: 40 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 27.867363] task: c6c33420 ti: c6d44000 task.ti: c6d44000
[ 27.867363] EIP: 0060:[<c10563af>] EFLAGS: 00000202 CPU: 0
[ 27.867363] EIP is at __put_cred+0x2f/0x90
[ 27.867363] EAX: c14bb720 EBX: c6d28380 ECX: 00000000 EDX: 00000001
[ 27.867363] ESI: c6c33420 EDI: 00000001 EBP: c6d45f24 ESP: c6d45f18
[ 27.867363] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 27.867363] CR0: 8005003b CR2: b768d000 CR3: 06d57000 CR4: 000006b0
[ 27.867363] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 27.867363] DR6: 00000000 DR7: 00000000
[ 27.867363] Stack:
[ 27.867363] c6d27000 c6c336b8 c6c33420 c6d45f30 c110a408 c6d27f00 c6d45f44 c104d499
[ 27.867363] c6c336d0 c6d1c480 c6c33420 c6d45f8c c1031202 c6d44000 c6c33420 c1075fab
[ 27.867363] c6d45f78 00000001 00000100 00000000 00000046 00000030 c6d1c4d0 c6c33420
[ 27.867363] Call Trace:
[ 27.867363] [<c110a408>] file_free_rcu+0x28/0x40
[ 27.867363] [<c104d499>] task_work_run+0x79/0xa0
[ 27.867363] [<c1031202>] do_exit+0x2f2/0x950
[ 27.867363] [<c1075fab>] ? trace_hardirqs_off+0xb/0x10
[ 27.867363] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 27.867363] [<c1032858>] SyS_exit_group+0x18/0x20
[ 27.867363] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 27.867363] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 27.867363] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d45f18
[ 27.891948] ---[ end trace f04df4e1fba40cb1 ]---
[ 27.892595] Fixing recursive fault but reboot is needed!
dmesg-quantal-ant-9:20131009002506:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 27.856676] debug: unmapping init [mem 0xc14d7000-0xc151bfff]
[ 28.193490] ------------[ cut here ]------------
[ 28.194993] WARNING: CPU: 0 PID: 39 at lib/list_debug.c:36 __list_add+0x141/0x180()
[ 28.195809] list_add double add: new=c6d1e368, prev=c6d58324, next=c6d1e368.
[ 28.196480] Modules linked in:
[ 28.197809] CPU: 0 PID: 39 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 28.199056] c141a43f c6d43d10 c1301315 c6d43d40 c10304aa c141af68 c6d43d6c 00000027
[ 28.201674] c141a43f 00000024 c11a08c1 c11a08c1 c6d58324 c6d1e368 c6d1e368 c6d43d58
[ 28.203312] c1030503 00000009 c6d43d50 c141af68 c6d43d6c c6d43d8c c11a08c1 c141a43f
[ 28.205715] Call Trace:
[ 28.206656] [<c1301315>] dump_stack+0x16/0x18
[ 28.208033] [<c10304aa>] warn_slowpath_common+0x7a/0xa0
[ 28.208966] [<c11a08c1>] ? __list_add+0x141/0x180
[ 28.209759] [<c11a08c1>] ? __list_add+0x141/0x180
[ 28.211208] [<c1030503>] warn_slowpath_fmt+0x33/0x40
[ 28.212113] [<c11a08c1>] __list_add+0x141/0x180
[ 28.212949] [<c11fd745>] tty_add_file+0x35/0x50
[ 28.213881] [<c11ff526>] tty_open+0x1b6/0x7f0
[ 28.215102] [<c110cfae>] chrdev_open+0x6e/0x170
[ 28.215897] [<c110cf40>] ? exact_lock+0x20/0x20
[ 28.216694] [<c1106f31>] do_dentry_open+0x2d1/0x370
[ 28.218077] [<c110cf40>] ? exact_lock+0x20/0x20
[ 28.218911] [<c1107019>] finish_open+0x49/0x60
[ 28.219690] [<c1119308>] do_last.isra.27+0xa88/0x10b0
[ 28.221002] [<c1114d92>] ? link_path_walk+0x122/0x1010
[ 28.221890] [<c1114a0d>] ? path_init+0x34d/0x5b0
[ 28.222714] [<c1119b8c>] path_openat+0x25c/0x770
[ 28.223522] [<c111a774>] do_filp_open+0x34/0xb0
[ 28.224851] [<c110847d>] do_sys_open+0x19d/0x250
[ 28.225661] [<c1307a7e>] ? restore_all+0xf/0xf
[ 28.226408] [<c1108552>] SyS_open+0x22/0x30
[ 28.227668] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 28.228719] ---[ end trace 080224f174f53ed2 ]---
[ 52.287137] BUG: soft lockup - CPU#0 stuck for 22s! [modprobe:39]
dmesg-quantal-athens-19:20131009003413:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 1.490835] ------------[ cut here ]------------
[ 1.491578] Kernel BUG at c10563af [verbose debug info unavailable]
[ 1.492534] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 1.493063] Modules linked in:
[ 1.493063] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 1.493063] task: c6c322c0 ti: c6d1a000 task.ti: c6d1a000
[ 1.493063] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 1.493063] EIP is at __put_cred+0x2f/0x90
[ 1.493063] EAX: c14bb720 EBX: c6d17380 ECX: 00000000 EDX: 00000001
[ 1.493063] ESI: c6c322c0 EDI: 00000001 EBP: c6d1bf24 ESP: c6d1bf18
[ 1.493063] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 1.493063] CR0: 8005003b CR2: b7756000 CR3: 06d1e000 CR4: 000006b0
[ 1.493063] Stack:
[ 1.493063] c006ee00 c6c32558 c6c322c0 c6d1bf30 c110a408 c006ed00 c6d1bf44 c104d499
[ 1.493063] c6c32570 c6d1c000 c6c322c0 c6d1bf8c c1031202 00000000 c6d1bf80 c110a636
[ 1.493063] 00000001 00000001 00000000 00000246 00000001 c6c32558 c6d1c050 c6c322c0
[ 1.493063] Call Trace:
[ 1.493063] [<c110a408>] file_free_rcu+0x28/0x40
[ 1.493063] [<c104d499>] task_work_run+0x79/0xa0
[ 1.493063] [<c1031202>] do_exit+0x2f2/0x950
[ 1.493063] [<c110a636>] ? __fput+0x216/0x380
[ 1.493063] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 1.493063] [<c1032858>] SyS_exit_group+0x18/0x20
[ 1.493063] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 1.493063] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 1.493063] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d1bf18
[ 1.511493] ---[ end trace d0b4907160520dd2 ]---
[ 1.512226] Fixing recursive fault but reboot is needed!
dmesg-quantal-cairo-12:20131009003424:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 1.666630] ------------[ cut here ]------------
[ 1.667251] Kernel BUG at c10563af [verbose debug info unavailable]
[ 1.668098] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 1.668885] Modules linked in:
[ 1.669147] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 1.669147] task: c6c322c0 ti: c6d1a000 task.ti: c6d1a000
[ 1.669147] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 1.669147] EIP is at __put_cred+0x2f/0x90
[ 1.669147] EAX: c14bb720 EBX: c6d17380 ECX: 00000000 EDX: 00000001
[ 1.669147] ESI: c6c322c0 EDI: 00000001 EBP: c6d1bf24 ESP: c6d1bf18
[ 1.669147] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 1.669147] CR0: 8005003b CR2: b773d000 CR3: 06d1e000 CR4: 000006b0
[ 1.669147] Stack:
[ 1.669147] c006ee00 c6c32558 c6c322c0 c6d1bf30 c110a408 c006ed00 c6d1bf44 c104d499
[ 1.669147] c6c32570 c6d1c000 c6c322c0 c6d1bf8c c1031202 00000000 c6d1bf80 c110a636
[ 1.669147] 00000001 00000001 00000000 00000246 00000001 c6c32558 c6d1c050 c6c322c0
[ 1.669147] Call Trace:
[ 1.669147] [<c110a408>] file_free_rcu+0x28/0x40
[ 1.669147] [<c104d499>] task_work_run+0x79/0xa0
[ 1.669147] [<c1031202>] do_exit+0x2f2/0x950
[ 1.669147] [<c110a636>] ? __fput+0x216/0x380
[ 1.669147] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 1.669147] [<c1032858>] SyS_exit_group+0x18/0x20
[ 1.669147] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 1.669147] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 1.669147] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d1bf18
[ 1.687323] ---[ end trace 0d9dbb73e2934b28 ]---
[ 1.687769] Fixing recursive fault but reboot is needed!
dmesg-quantal-cairo-23:20131009003413:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 1.660398] ------------[ cut here ]------------
[ 1.661181] Kernel BUG at c10563af [verbose debug info unavailable]
[ 1.662218] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 1.663116] Modules linked in:
[ 1.663358] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 1.663358] task: c6c322c0 ti: c6d1a000 task.ti: c6d1a000
[ 1.663358] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 1.663358] EIP is at __put_cred+0x2f/0x90
[ 1.663358] EAX: c14bb720 EBX: c6d17380 ECX: 00000000 EDX: 00000001
[ 1.663358] ESI: c6c322c0 EDI: 00000001 EBP: c6d1bf24 ESP: c6d1bf18
[ 1.663358] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 1.663358] CR0: 8005003b CR2: b76ee000 CR3: 06d1e000 CR4: 000006b0
[ 1.663358] Stack:
[ 1.663358] c006ee00 c6c32558 c6c322c0 c6d1bf30 c110a408 c006ed00 c6d1bf44 c104d499
[ 1.663358] c6c32570 c6d1c000 c6c322c0 c6d1bf8c c1031202 00000000 c6d1bf80 c110a636
[ 1.663358] 00000001 00000001 00000000 00000246 00000001 c6c32558 c6d1c050 c6c322c0
[ 1.663358] Call Trace:
[ 1.663358] [<c110a408>] file_free_rcu+0x28/0x40
[ 1.663358] [<c104d499>] task_work_run+0x79/0xa0
[ 1.663358] [<c1031202>] do_exit+0x2f2/0x950
[ 1.663358] [<c110a636>] ? __fput+0x216/0x380
[ 1.663358] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 1.663358] [<c1032858>] SyS_exit_group+0x18/0x20
[ 1.663358] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 1.663358] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 1.663358] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d1bf18
[ 1.688713] ---[ end trace 09588e96c335cb0f ]---
[ 1.689507] Fixing recursive fault but reboot is needed!
dmesg-quantal-jaketown-31:20131009003413:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 3.623281] ------------[ cut here ]------------
[ 3.624356] Kernel BUG at c10563af [verbose debug info unavailable]
[ 3.624356] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 3.624356] Modules linked in:
[ 3.624356] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 3.624356] task: c6c2a2c0 ti: c6d16000 task.ti: c6d16000
[ 3.624356] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 3.624356] EIP is at __put_cred+0x2f/0x90
[ 3.624356] EAX: c14bb720 EBX: c6d11080 ECX: 00000000 EDX: 00000001
[ 3.624356] ESI: c6c2a2c0 EDI: 00000001 EBP: c6d17f24 ESP: c6d17f18
[ 3.624356] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 3.624356] CR0: 8005003b CR2: b77db000 CR3: 06d12000 CR4: 000006b0
[ 3.624356] Stack:
[ 3.624356] c006ee00 c6c2a558 c6c2a2c0 c6d17f30 c110a408 c006ed00 c6d17f44 c104d499
[ 3.624356] c6c2a570 c6d18000 c6c2a2c0 c6d17f8c c1031202 00000000 c6d17f80 c110a636
[ 3.624356] 00000001 00000001 00000000 00000246 00000001 c6c2a558 c6d18050 c6c2a2c0
[ 3.624356] Call Trace:
[ 3.624356] [<c110a408>] file_free_rcu+0x28/0x40
[ 3.624356] [<c104d499>] task_work_run+0x79/0xa0
[ 3.624356] [<c1031202>] do_exit+0x2f2/0x950
[ 3.624356] [<c110a636>] ? __fput+0x216/0x380
[ 3.624356] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 3.624356] [<c1032858>] SyS_exit_group+0x18/0x20
[ 3.624356] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 3.624356] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 3.624356] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d17f18
[ 3.698673] ---[ end trace 1b998c263f6d23dd ]---
[ 3.700715] Fixing recursive fault but reboot is needed!
dmesg-quantal-lkp-st01-11:20131009003427:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 2.203638] ------------[ cut here ]------------
[ 2.204376] Kernel BUG at c10563af [verbose debug info unavailable]
[ 2.205357] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 2.206198] Modules linked in:
[ 2.206708] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 2.206795] task: c6c322c0 ti: c6d1a000 task.ti: c6d1a000
[ 2.206795] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 2.206795] EIP is at __put_cred+0x2f/0x90
[ 2.206795] EAX: c14bb720 EBX: c6d17380 ECX: 00000000 EDX: 00000001
[ 2.206795] ESI: c6c322c0 EDI: 00000001 EBP: c6d1bf24 ESP: c6d1bf18
[ 2.206795] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 2.206795] CR0: 8005003b CR2: b77cc000 CR3: 06d1e000 CR4: 000006b0
[ 2.206795] Stack:
[ 2.206795] c006ee00 c6c32558 c6c322c0 c6d1bf30 c110a408 c006ed00 c6d1bf44 c104d499
[ 2.206795] c6c32570 c6d1c000 c6c322c0 c6d1bf8c c1031202 00000000 c6d1bf80 c110a636
[ 2.206795] 00000001 00000001 00000000 00000246 00000001 c6c32558 c6d1c050 c6c322c0
[ 2.206795] Call Trace:
[ 2.206795] [<c110a408>] file_free_rcu+0x28/0x40
[ 2.206795] [<c104d499>] task_work_run+0x79/0xa0
[ 2.206795] [<c1031202>] do_exit+0x2f2/0x950
[ 2.206795] [<c110a636>] ? __fput+0x216/0x380
[ 2.206795] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 2.206795] [<c1032858>] SyS_exit_group+0x18/0x20
[ 2.206795] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 2.206795] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 2.206795] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d1bf18
[ 2.229464] ---[ end trace 923a2748b0895c86 ]---
[ 2.230243] Fixing recursive fault but reboot is needed!
dmesg-quantal-lkp-st01-9:20131009003354:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 2.198579] ------------[ cut here ]------------
[ 2.199309] Kernel BUG at c10563af [verbose debug info unavailable]
[ 2.200292] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 2.200773] Modules linked in:
[ 2.200773] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 2.200773] task: c6c322c0 ti: c6d1a000 task.ti: c6d1a000
[ 2.200773] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 2.200773] EIP is at __put_cred+0x2f/0x90
[ 2.200773] EAX: c14bb720 EBX: c6d17380 ECX: 00000000 EDX: 00000001
[ 2.200773] ESI: c6c322c0 EDI: 00000001 EBP: c6d1bf24 ESP: c6d1bf18
[ 2.200773] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 2.200773] CR0: 8005003b CR2: b7762000 CR3: 06d1e000 CR4: 000006b0
[ 2.200773] Stack:
[ 2.200773] c006ee00 c6c32558 c6c322c0 c6d1bf30 c110a408 c006ed00 c6d1bf44 c104d499
[ 2.200773] c6c32570 c6d1c000 c6c322c0 c6d1bf8c c1031202 00000000 c6d1bf80 c110a636
[ 2.200773] 00000001 00000001 00000000 00000246 00000001 c6c32558 c6d1c050 c6c322c0
[ 2.200773] Call Trace:
[ 2.200773] [<c110a408>] file_free_rcu+0x28/0x40
[ 2.200773] [<c104d499>] task_work_run+0x79/0xa0
[ 2.200773] [<c1031202>] do_exit+0x2f2/0x950
[ 2.200773] [<c110a636>] ? __fput+0x216/0x380
[ 2.200773] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 2.200773] [<c1032858>] SyS_exit_group+0x18/0x20
[ 2.200773] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 2.200773] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 2.200773] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d1bf18
[ 2.224358] ---[ end trace d92dad60f62732f8 ]---
[ 2.225080] Fixing recursive fault but reboot is needed!
dmesg-quantal-lkp-tt02-3:20131008150513:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 2.468734] ------------[ cut here ]------------
[ 2.469698] Kernel BUG at c10563af [verbose debug info unavailable]
[ 2.470992] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 2.471993] Modules linked in:
[ 2.471993] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 2.471993] task: c6c2a2c0 ti: c6d16000 task.ti: c6d16000
[ 2.471993] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 2.471993] EIP is at __put_cred+0x2f/0x90
[ 2.471993] EAX: c14bb720 EBX: c6d11080 ECX: 00000000 EDX: 00000001
[ 2.471993] ESI: c6c2a2c0 EDI: 00000001 EBP: c6d17f24 ESP: c6d17f18
[ 2.471993] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 2.471993] CR0: 8005003b CR2: b7748000 CR3: 06d12000 CR4: 000006b0
[ 2.471993] Stack:
[ 2.471993] c006ee00 c6c2a558 c6c2a2c0 c6d17f30 c110a408 c006ed00 c6d17f44 c104d499
[ 2.471993] c6c2a570 c6d18000 c6c2a2c0 c6d17f8c c1031202 00000000 c6d17f80 c110a636
[ 2.471993] 00000001 00000001 00000000 00000246 00000001 c6c2a558 c6d18050 c6c2a2c0
[ 2.471993] Call Trace:
[ 2.471993] [<c110a408>] file_free_rcu+0x28/0x40
[ 2.471993] [<c104d499>] task_work_run+0x79/0xa0
[ 2.471993] [<c1031202>] do_exit+0x2f2/0x950
[ 2.471993] [<c110a636>] ? __fput+0x216/0x380
[ 2.471993] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 2.471993] [<c1032858>] SyS_exit_group+0x18/0x20
[ 2.471993] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 2.471993] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 2.471993] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d17f18
[ 2.503251] ---[ end trace 3b2042225c4df31d ]---
[ 2.504205] Fixing recursive fault but reboot is needed!
dmesg-quantal-lkp-tt02-7:20131008150522:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 2.428135] ------------[ cut here ]------------
[ 2.429119] Kernel BUG at c10563af [verbose debug info unavailable]
[ 2.430431] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 2.431049] Modules linked in:
[ 2.431049] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 2.431049] task: c6c2a2c0 ti: c6d16000 task.ti: c6d16000
[ 2.431049] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 2.431049] EIP is at __put_cred+0x2f/0x90
[ 2.431049] EAX: c14bb720 EBX: c6d11080 ECX: 00000000 EDX: 00000001
[ 2.431049] ESI: c6c2a2c0 EDI: 00000001 EBP: c6d17f24 ESP: c6d17f18
[ 2.431049] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 2.431049] CR0: 8005003b CR2: b7732000 CR3: 06d12000 CR4: 000006b0
[ 2.431049] Stack:
[ 2.431049] c006ee00 c6c2a558 c6c2a2c0 c6d17f30 c110a408 c006ed00 c6d17f44 c104d499
[ 2.431049] c6c2a570 c6d18000 c6c2a2c0 c6d17f8c c1031202 00000000 c6d17f80 c110a636
[ 2.431049] 00000001 00000001 00000000 00000246 00000001 c6c2a558 c6d18050 c6c2a2c0
[ 2.431049] Call Trace:
[ 2.431049] [<c110a408>] file_free_rcu+0x28/0x40
[ 2.431049] [<c104d499>] task_work_run+0x79/0xa0
[ 2.431049] [<c1031202>] do_exit+0x2f2/0x950
[ 2.431049] [<c110a636>] ? __fput+0x216/0x380
[ 2.431049] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 2.431049] [<c1032858>] SyS_exit_group+0x18/0x20
[ 2.431049] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 2.431049] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 2.431049] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d17f18
[ 2.470717] ---[ end trace 49b1330184d07147 ]---
[ 2.472096] Fixing recursive fault but reboot is needed!
dmesg-quantal-snb-10:20131009003411:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 2.004517] ------------[ cut here ]------------
[ 2.005444] Kernel BUG at c10563af [verbose debug info unavailable]
[ 2.006199] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 2.006199] Modules linked in:
[ 2.006199] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 2.006199] task: c6c322c0 ti: c6d1a000 task.ti: c6d1a000
[ 2.006199] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 2.006199] EIP is at __put_cred+0x2f/0x90
[ 2.006199] EAX: c14bb720 EBX: c6d17380 ECX: 00000000 EDX: 00000001
[ 2.006199] ESI: c6c322c0 EDI: 00000001 EBP: c6d1bf24 ESP: c6d1bf18
[ 2.006199] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 2.006199] CR0: 8005003b CR2: b7751000 CR3: 06d1e000 CR4: 000006b0
[ 2.006199] Stack:
[ 2.006199] c006ee00 c6c32558 c6c322c0 c6d1bf30 c110a408 c006ed00 c6d1bf44 c104d499
[ 2.006199] c6c32570 c6d1c000 c6c322c0 c6d1bf8c c1031202 00000000 c6d1bf80 c110a636
[ 2.006199] 00000001 00000001 00000000 00000246 00000001 c6c32558 c6d1c050 c6c322c0
[ 2.006199] Call Trace:
[ 2.006199] [<c110a408>] file_free_rcu+0x28/0x40
[ 2.006199] [<c104d499>] task_work_run+0x79/0xa0
[ 2.006199] [<c1031202>] do_exit+0x2f2/0x950
[ 2.006199] [<c110a636>] ? __fput+0x216/0x380
[ 2.006199] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 2.006199] [<c1032858>] SyS_exit_group+0x18/0x20
[ 2.006199] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 2.006199] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 2.006199] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d1bf18
[ 2.035701] ---[ end trace 7c659a37d71008c4 ]---
[ 2.036575] Fixing recursive fault but reboot is needed!
dmesg-quantal-snb-14:20131009003352:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 1.873594] ------------[ cut here ]------------
[ 1.874449] Kernel BUG at c10563af [verbose debug info unavailable]
[ 1.875562] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 1.876517] Modules linked in:
[ 1.876825] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 1.876825] task: c6c322c0 ti: c6d1a000 task.ti: c6d1a000
[ 1.876825] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 1.876825] EIP is at __put_cred+0x2f/0x90
[ 1.876825] EAX: c14bb720 EBX: c6d17380 ECX: 00000000 EDX: 00000001
[ 1.876825] ESI: c6c322c0 EDI: 00000001 EBP: c6d1bf24 ESP: c6d1bf18
[ 1.876825] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 1.876825] CR0: 8005003b CR2: b775c000 CR3: 06d1e000 CR4: 000006b0
[ 1.876825] Stack:
[ 1.876825] c006ee00 c6c32558 c6c322c0 c6d1bf30 c110a408 c006ed00 c6d1bf44 c104d499
[ 1.876825] c6c32570 c6d1c000 c6c322c0 c6d1bf8c c1031202 00000000 c6d1bf80 c110a636
[ 1.876825] 00000001 00000001 00000000 00000246 00000001 c6c32558 c6d1c050 c6c322c0
[ 1.876825] Call Trace:
[ 1.876825] [<c110a408>] file_free_rcu+0x28/0x40
[ 1.876825] [<c104d499>] task_work_run+0x79/0xa0
[ 1.876825] [<c1031202>] do_exit+0x2f2/0x950
[ 1.876825] [<c110a636>] ? __fput+0x216/0x380
[ 1.876825] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 1.876825] [<c1032858>] SyS_exit_group+0x18/0x20
[ 1.876825] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 1.876825] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 1.876825] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d1bf18
[ 1.904117] ---[ end trace 751354922a6f111b ]---
[ 1.904956] Fixing recursive fault but reboot is needed!
dmesg-quantal-snb-5:20131009003359:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 1.939202] ------------[ cut here ]------------
[ 1.940093] Kernel BUG at c10563af [verbose debug info unavailable]
[ 1.940937] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 1.940937] Modules linked in:
[ 1.940937] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 1.940937] task: c6c322c0 ti: c6d1a000 task.ti: c6d1a000
[ 1.940937] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 1.940937] EIP is at __put_cred+0x2f/0x90
[ 1.940937] EAX: c14bb720 EBX: c6d17380 ECX: 00000000 EDX: 00000001
[ 1.940937] ESI: c6c322c0 EDI: 00000001 EBP: c6d1bf24 ESP: c6d1bf18
[ 1.940937] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 1.940937] CR0: 8005003b CR2: b7751000 CR3: 06d1e000 CR4: 000006b0
[ 1.940937] Stack:
[ 1.940937] c006ee00 c6c32558 c6c322c0 c6d1bf30 c110a408 c006ed00 c6d1bf44 c104d499
[ 1.940937] c6c32570 c6d1c000 c6c322c0 c6d1bf8c c1031202 00000000 c6d1bf80 c110a636
[ 1.940937] 00000001 00000001 00000000 00000246 00000001 c6c32558 c6d1c050 c6c322c0
[ 1.940937] Call Trace:
[ 1.940937] [<c110a408>] file_free_rcu+0x28/0x40
[ 1.940937] [<c104d499>] task_work_run+0x79/0xa0
[ 1.940937] [<c1031202>] do_exit+0x2f2/0x950
[ 1.940937] [<c110a636>] ? __fput+0x216/0x380
[ 1.940937] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 1.940937] [<c1032858>] SyS_exit_group+0x18/0x20
[ 1.940937] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 1.940937] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 1.940937] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d1bf18
[ 1.968415] ---[ end trace 8c5056fc7a63be1b ]---
[ 1.969230] Fixing recursive fault but reboot is needed!
dmesg-quantal-stoakley-7:20131009003427:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 2.027904] ------------[ cut here ]------------
[ 2.028164] Kernel BUG at c10563af [verbose debug info unavailable]
[ 2.028164] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 2.028164] Modules linked in:
[ 2.028164] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 2.028164] task: c6c322c0 ti: c6d1a000 task.ti: c6d1a000
[ 2.028164] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 2.028164] EIP is at __put_cred+0x2f/0x90
[ 2.028164] EAX: c14bb720 EBX: c6d17380 ECX: 00000000 EDX: 00000001
[ 2.028164] ESI: c6c322c0 EDI: 00000001 EBP: c6d1bf24 ESP: c6d1bf18
[ 2.028164] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 2.028164] CR0: 8005003b CR2: b77af000 CR3: 06d1e000 CR4: 000006b0
[ 2.028164] Stack:
[ 2.028164] c006ee00 c6c32558 c6c322c0 c6d1bf30 c110a408 c006ed00 c6d1bf44 c104d499
[ 2.028164] c6c32570 c6d1c000 c6c322c0 c6d1bf8c c1031202 00000000 c6d1bf80 c110a636
[ 2.028164] 00000001 00000001 00000000 00000246 00000001 c6c32558 c6d1c050 c6c322c0
[ 2.028164] Call Trace:
[ 2.028164] [<c110a408>] file_free_rcu+0x28/0x40
[ 2.028164] [<c104d499>] task_work_run+0x79/0xa0
[ 2.028164] [<c1031202>] do_exit+0x2f2/0x950
[ 2.028164] [<c110a636>] ? __fput+0x216/0x380
[ 2.028164] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 2.028164] [<c1032858>] SyS_exit_group+0x18/0x20
[ 2.028164] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 2.028164] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 2.028164] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d1bf18
[ 2.050744] ---[ end trace 2e535460ae08e2e8 ]---
[ 2.051392] Fixing recursive fault but reboot is needed!
dmesg-quantal-waimea-10:20131009083054:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 0.933170] ------------[ cut here ]------------
[ 0.933702] Kernel BUG at c10563af [verbose debug info unavailable]
[ 0.934452] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 0.934728] Modules linked in:
[ 0.934728] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 0.934728] task: c6c322c0 ti: c6d2a000 task.ti: c6d2a000
[ 0.934728] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 0.934728] EIP is at __put_cred+0x2f/0x90
[ 0.934728] EAX: c14bb720 EBX: c6d17400 ECX: 00000000 EDX: 00000001
[ 0.934728] ESI: c6c322c0 EDI: 00000001 EBP: c6d2bf24 ESP: c6d2bf18
[ 0.934728] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 0.934728] CR0: 8005003b CR2: b7793000 CR3: 06d19000 CR4: 000006b0
[ 0.934728] Stack:
[ 0.934728] c006ee00 c6c32558 c6c322c0 c6d2bf30 c110a408 c006ed00 c6d2bf44 c104d499
[ 0.934728] c6c32570 c6d2c000 c6c322c0 c6d2bf8c c1031202 00000000 c6d2bf80 c110a636
[ 0.934728] 00000001 00000001 00000000 00000246 00000001 c6c32558 c6d2c050 c6c322c0
[ 0.934728] Call Trace:
[ 0.934728] [<c110a408>] file_free_rcu+0x28/0x40
[ 0.934728] [<c104d499>] task_work_run+0x79/0xa0
[ 0.934728] [<c1031202>] do_exit+0x2f2/0x950
[ 0.934728] [<c110a636>] ? __fput+0x216/0x380
[ 0.934728] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 0.934728] [<c1032858>] SyS_exit_group+0x18/0x20
[ 0.934728] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 0.934728] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 0.934728] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d2bf18
[ 0.952083] ---[ end trace e034291e60bada3a ]---
[ 0.952608] Fixing recursive fault but reboot is needed!
dmesg-quantal-xian-31:20131009003413:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 1.615252] ------------[ cut here ]------------
[ 1.616087] Kernel BUG at c10563af [verbose debug info unavailable]
[ 1.617129] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 1.618032] Modules linked in:
[ 1.618136] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 1.618136] task: c6c322c0 ti: c6d1a000 task.ti: c6d1a000
[ 1.618136] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 1.618136] EIP is at __put_cred+0x2f/0x90
[ 1.618136] EAX: c14bb720 EBX: c6d17380 ECX: 00000000 EDX: 00000001
[ 1.618136] ESI: c6c322c0 EDI: 00000001 EBP: c6d1bf24 ESP: c6d1bf18
[ 1.618136] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 1.618136] CR0: 8005003b CR2: b775f000 CR3: 06d1e000 CR4: 000006b0
[ 1.618136] Stack:
[ 1.618136] c006ee00 c6c32558 c6c322c0 c6d1bf30 c110a408 c006ed00 c6d1bf44 c104d499
[ 1.618136] c6c32570 c6d1c000 c6c322c0 c6d1bf8c c1031202 00000000 c6d1bf80 c110a636
[ 1.618136] 00000001 00000001 00000000 00000246 00000001 c6c32558 c6d1c050 c6c322c0
[ 1.618136] Call Trace:
[ 1.618136] [<c110a408>] file_free_rcu+0x28/0x40
[ 1.618136] [<c104d499>] task_work_run+0x79/0xa0
[ 1.618136] [<c1031202>] do_exit+0x2f2/0x950
[ 1.618136] [<c110a636>] ? __fput+0x216/0x380
[ 1.618136] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 1.618136] [<c1032858>] SyS_exit_group+0x18/0x20
[ 1.618136] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 1.618136] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 1.618136] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d1bf18
[ 1.640485] ---[ end trace 544ba4c9cb172e4b ]---
[ 1.641182] Fixing recursive fault but reboot is needed!
dmesg-quantal-xian-43:20131009003355:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
[ 1.638354] ------------[ cut here ]------------
[ 1.639150] Kernel BUG at c10563af [verbose debug info unavailable]
[ 1.639256] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 1.639256] Modules linked in:
[ 1.639256] CPU: 0 PID: 36 Comm: modprobe Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 1.639256] task: c6c322c0 ti: c6d1a000 task.ti: c6d1a000
[ 1.639256] EIP: 0060:[<c10563af>] EFLAGS: 00010202 CPU: 0
[ 1.639256] EIP is at __put_cred+0x2f/0x90
[ 1.639256] EAX: c14bb720 EBX: c6d17380 ECX: 00000000 EDX: 00000001
[ 1.639256] ESI: c6c322c0 EDI: 00000001 EBP: c6d1bf24 ESP: c6d1bf18
[ 1.639256] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 1.639256] CR0: 8005003b CR2: b77ac000 CR3: 06d1e000 CR4: 000006b0
[ 1.639256] Stack:
[ 1.639256] c006ee00 c6c32558 c6c322c0 c6d1bf30 c110a408 c006ed00 c6d1bf44 c104d499
[ 1.639256] c6c32570 c6d1c000 c6c322c0 c6d1bf8c c1031202 00000000 c6d1bf80 c110a636
[ 1.639256] 00000001 00000001 00000000 00000246 00000001 c6c32558 c6d1c050 c6c322c0
[ 1.639256] Call Trace:
[ 1.639256] [<c110a408>] file_free_rcu+0x28/0x40
[ 1.639256] [<c104d499>] task_work_run+0x79/0xa0
[ 1.639256] [<c1031202>] do_exit+0x2f2/0x950
[ 1.639256] [<c110a636>] ? __fput+0x216/0x380
[ 1.639256] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 1.639256] [<c1032858>] SyS_exit_group+0x18/0x20
[ 1.639256] [<c130ee30>] sysenter_do_call+0x12/0x3c
[ 1.639256] Code: 56 53 e8 35 8f 2b 00 89 c3 8b 00 8b 03 85 c0 0f 95 c0 25 ff 00 00 00 89 c6 31 c9 89 c2 b8 34 b7 4b c1 e8 25 1a 05 00 85 f6 74 02 <0f> 0b 8b 35 88 d7 46 c1 31 c0 39 9e a4 01 00 00 0f 94 c0 89 c7
[ 1.639256] EIP: [<c10563af>] __put_cred+0x2f/0x90 SS:ESP 0068:c6d1bf18
[ 1.665505] ---[ end trace 0e638a59e536f317 ]---
[ 1.666366] Fixing recursive fault but reboot is needed!
dmesg-yocto-lkp-tt02-2:20131008145515:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
mount: mounting proc on /proc failed: No such device
[ 0.997823] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 0.999402] IP: [< (null)>] (null)
[ 1.000224] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
[ 1.000712] Oops: 0010 [#1] DEBUG_PAGEALLOC
[ 1.000712] Modules linked in:
[ 1.000712] CPU: 0 PID: 46 Comm: mount Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 1.000712] task: cd7c3cd0 ti: cd10a000 task.ti: cd10a000
[ 1.000712] EIP: 0060:[<00000000>] EFLAGS: 00010246 CPU: 0
[ 1.000712] EIP is at 0x0
[ 1.000712] EAX: cd0dc500 EBX: cd0dce00 ECX: 00000000 EDX: cd0dc500
[ 1.000712] ESI: cd7c3f68 EDI: cd7c3cd0 EBP: cd10bf44 ESP: cd10bf34
[ 1.000712] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 1.000712] CR0: 8005003b CR2: 00000000 CR3: 0d102000 CR4: 000006b0
[ 1.000712] Stack:
[ 1.000712] c104d499 cd7c3f80 cd0d6a00 cd7c3cd0 cd10bf8c c1031202 00000000 00000000
[ 1.000712] cee9d000 00000035 00000001 cd10bf88 c1109351 00000001 00000000 cd0d6a50
[ 1.000712] cd7c3cd0 080d3208 cd10bf9c 0000ff00 cd0ea600 cd7c3cd0 cd10bfa4 c10327ea
[ 1.000712] Call Trace:
[ 1.000712] [<c104d499>] ? task_work_run+0x79/0xa0
[ 1.000712] [<c1031202>] do_exit+0x2f2/0x950
[ 1.000712] [<c1109351>] ? vfs_write+0x161/0x1a0
[ 1.000712] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 1.000712] [<c1032858>] SyS_exit_group+0x18/0x20
[ 1.000712] [<c1307a45>] syscall_call+0x7/0xb
[ 1.000712] Code: Bad EIP value.
[ 1.000712] EIP: [<00000000>] 0x0 SS:ESP 0068:cd10bf34
[ 1.000712] CR2: 0000000000000000
dmesg-yocto-nhm4-1:20131008162924:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
mount: mounting proc on /proc failed: No such device
[ 0.441443] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 0.442048] IP: [<c110a470>] __fput+0x50/0x380
[ 0.442432] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
[ 0.442928] Oops: 0000 [#1] DEBUG_PAGEALLOC
[ 0.443319] Modules linked in:
[ 0.443524] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 0.443524] Workqueue: events delayed_fput
[ 0.443524] task: c0035f90 ti: ce866000 task.ti: ce866000
[ 0.443524] EIP: 0060:[<c110a470>] EFLAGS: 00010212 CPU: 0
[ 0.443524] EIP is at __fput+0x50/0x380
[ 0.443524] EAX: 00000000 EBX: cd0e3200 ECX: 00000000 EDX: 0000001d
[ 0.443524] ESI: 00000010 EDI: 00000000 EBP: ce867e98 ESP: ce867e70
[ 0.443524] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 0.443524] CR0: 8005003b CR2: 00000000 CR3: 0d10b000 CR4: 000006b0
[ 0.443524] Stack:
[ 0.443524] 00000246 00000000 00000002 00000000 00000000 00000000 00000000 00000000
[ 0.443524] 00000000 c0124540 ce867ea4 c110a7c9 c148d640 ce867efc c1048fb9 00000000
[ 0.443524] 00000002 00000000 c1048f81 00000000 00000000 00000000 0019ebc7 c0083400
[ 0.443524] Call Trace:
[ 0.443524] [<c110a7c9>] delayed_fput+0x29/0x30
[ 0.443524] [<c1048fb9>] process_one_work+0x2f9/0x650
[ 0.443524] [<c1048f81>] ? process_one_work+0x2c1/0x650
[ 0.443524] [<c104a8ef>] worker_thread+0x28f/0x610
[ 0.443524] [<c104a660>] ? cancel_delayed_work_sync+0x20/0x20
[ 0.443524] [<c1050902>] kthread+0x92/0xa0
[ 0.443524] [<c130ed9b>] ret_from_kernel_thread+0x1b/0x30
[ 0.443524] [<c1050870>] ? kthread_create_on_node+0xd0/0xd0
[ 0.443524] Code: 00 b8 ad 5e 41 c1 e8 b0 fe f4 ff e8 fb b1 1f 00 8b 43 10 89 c1 89 45 e8 8b 53 40 89 d0 83 e0 02 83 f8 01 19 f6 83 e6 08 83 c6 08 <8b> 01 25 00 f0 ff ff 66 3d 00 40 0f 84 2f 02 00 00 81 e2 00 00
[ 0.443524] EIP: [<c110a470>] __fput+0x50/0x380 SS:ESP 0068:ce867e70
[ 0.443524] CR2: 0000000000000000
[ 0.456633] ---[ end trace 904c44bc0abd3aee ]---
[ 0.460187] Kernel panic - not syncing: CRED: put_cred_rcu() sees cd0c6d00 with usage -1
dmesg-yocto-snb-38:20131009002344:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
mount: mounting proc on /proc failed: No such device
[ 0.918117] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 0.919547] IP: [< (null)>] (null)
[ 0.919794] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
[ 0.919794] Oops: 0010 [#1] DEBUG_PAGEALLOC
[ 0.919794] Modules linked in:
[ 0.919794] CPU: 0 PID: 46 Comm: mount Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 0.919794] task: cd7cbcd0 ti: cd10e000 task.ti: cd10e000
[ 0.919794] EIP: 0060:[<00000000>] EFLAGS: 00010246 CPU: 0
[ 0.919794] EIP is at 0x0
[ 0.919794] EAX: cd0e3500 EBX: cd0e3e00 ECX: 00000000 EDX: cd0e3500
[ 0.919794] ESI: cd7cbf68 EDI: cd7cbcd0 EBP: cd10ff44 ESP: cd10ff34
[ 0.919794] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 0.919794] CR0: 8005003b CR2: 00000000 CR3: 0d10a000 CR4: 000006b0
[ 0.919794] Stack:
[ 0.919794] c104d499 cd7cbf80 cd0daa00 cd7cbcd0 cd10ff8c c1031202 00000000 00000000
[ 0.919794] cee9d000 00000035 00000001 cd10ff88 c1109351 00000001 00000000 cd0daa50
[ 0.919794] cd7cbcd0 080d3208 cd10ff9c 0000ff00 cd0ee600 cd7cbcd0 cd10ffa4 c10327ea
[ 0.919794] Call Trace:
[ 0.919794] [<c104d499>] ? task_work_run+0x79/0xa0
[ 0.919794] [<c1031202>] do_exit+0x2f2/0x950
[ 0.919794] [<c1109351>] ? vfs_write+0x161/0x1a0
[ 0.919794] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 0.919794] [<c1032858>] SyS_exit_group+0x18/0x20
[ 0.919794] [<c1307a45>] syscall_call+0x7/0xb
[ 0.919794] Code: Bad EIP value.
[ 0.919794] EIP: [<00000000>] 0x0 SS:ESP 0068:cd10ff34
[ 0.919794] CR2: 0000000000000000
dmesg-yocto-snb-43:20131009002416:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
mount: mounting proc on /proc failed: No such device
[ 0.873183] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 0.874508] IP: [< (null)>] (null)
[ 0.874688] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
[ 0.874688] Oops: 0010 [#1] DEBUG_PAGEALLOC
[ 0.874688] Modules linked in:
[ 0.874688] CPU: 0 PID: 46 Comm: mount Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 0.874688] task: cd7cbcd0 ti: cd10e000 task.ti: cd10e000
[ 0.874688] EIP: 0060:[<00000000>] EFLAGS: 00010246 CPU: 0
[ 0.874688] EIP is at 0x0
[ 0.874688] EAX: cd0e3100 EBX: cd0e3e00 ECX: 00000000 EDX: cd0e3100
[ 0.874688] ESI: cd7cbf68 EDI: cd7cbcd0 EBP: cd10ff44 ESP: cd10ff34
[ 0.874688] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 0.874688] CR0: 8005003b CR2: 00000000 CR3: 0d10a000 CR4: 000006b0
[ 0.874688] Stack:
[ 0.874688] c104d499 cd7cbf80 cd0daa00 cd7cbcd0 cd10ff8c c1031202 00000000 00000000
[ 0.874688] cee9d000 00000035 00000001 cd10ff88 c1109351 00000001 00000000 cd0daa50
[ 0.874688] cd7cbcd0 080d3208 cd10ff9c 0000ff00 cd0ee600 cd7cbcd0 cd10ffa4 c10327ea
[ 0.874688] Call Trace:
[ 0.874688] [<c104d499>] ? task_work_run+0x79/0xa0
[ 0.874688] [<c1031202>] do_exit+0x2f2/0x950
[ 0.874688] [<c1109351>] ? vfs_write+0x161/0x1a0
[ 0.874688] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 0.874688] [<c1032858>] SyS_exit_group+0x18/0x20
[ 0.874688] [<c1307a45>] syscall_call+0x7/0xb
[ 0.874688] Code: Bad EIP value.
[ 0.874688] EIP: [<00000000>] 0x0 SS:ESP 0068:cd10ff34
[ 0.874688] CR2: 0000000000000000
dmesg-yocto-stoakley-3:20131009002418:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
mount: mounting proc on /proc failed: No such device
[ 0.831874] kernel tried to execute NX-protected page - exploit attempt? (uid: 0)
[ 0.832409] BUG: unable to handle kernel paging request at cd0e3a08
[ 0.832409] IP: [<cd0e3a08>] 0xcd0e3a07
[ 0.832409] *pdpt = 000000000151c001 *pde = 000000000fbfc067 *pte = 800000000d0e3163
[ 0.832409] Oops: 0011 [#1] DEBUG_PAGEALLOC
[ 0.832409] Modules linked in:
[ 0.832409] CPU: 0 PID: 46 Comm: mount Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 0.832409] task: cd7cbcd0 ti: cd10e000 task.ti: cd10e000
[ 0.832409] EIP: 0060:[<cd0e3a08>] EFLAGS: 00010246 CPU: 0
[ 0.832409] EIP is at 0xcd0e3a08
[ 0.832409] EAX: cd0e3a00 EBX: cd0e3800 ECX: 00000000 EDX: cd0e3a00
[ 0.832409] ESI: cd7cbf68 EDI: cd7cbcd0 EBP: cd10ff44 ESP: cd10ff34
[ 0.832409] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 0.832409] CR0: 8005003b CR2: cd0e3a08 CR3: 0d10a000 CR4: 000006b0
[ 0.832409] Stack:
[ 0.832409] c104d499 cd7cbf80 cd0daa00 cd7cbcd0 cd10ff8c c1031202 00000000 00000000
[ 0.832409] cee9d000 00000035 00000001 cd10ff88 c1109351 00000001 00000000 cd0daa50
[ 0.832409] cd7cbcd0 080d3208 cd10ff9c 0000ff00 cd0ee600 cd7cbcd0 cd10ffa4 c10327ea
[ 0.832409] Call Trace:
[ 0.832409] [<c104d499>] ? task_work_run+0x79/0xa0
[ 0.832409] [<c1031202>] do_exit+0x2f2/0x950
[ 0.832409] [<c1109351>] ? vfs_write+0x161/0x1a0
[ 0.832409] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 0.832409] [<c1032858>] SyS_exit_group+0x18/0x20
[ 0.832409] [<c1307a45>] syscall_call+0x7/0xb
[ 0.832409] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 38 0e cd 08 3a 0e cd <20> 00 00 00 4c 3a 0e cd 44 3a 0e cd 48 3a 0e cd 01 00 00 00 ad
[ 0.832409] EIP: [<cd0e3a08>] 0xcd0e3a08 SS:ESP 0068:cd10ff34
[ 0.832409] CR2: 00000000cd0e3a08
dmesg-yocto-stoakley-4:20131009002412:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
mount: mounting proc on /proc failed: No such device
[ 0.840034] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 0.841074] IP: [< (null)>] (null)
[ 0.841610] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
[ 0.841824] Oops: 0010 [#1] DEBUG_PAGEALLOC
[ 0.841824] Modules linked in:
[ 0.841824] CPU: 0 PID: 46 Comm: mount Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 0.841824] task: cd7cbcd0 ti: cd10e000 task.ti: cd10e000
[ 0.841824] EIP: 0060:[<00000000>] EFLAGS: 00010246 CPU: 0
[ 0.841824] EIP is at 0x0
[ 0.841824] EAX: cd0e3100 EBX: cd0e3e00 ECX: 00000000 EDX: cd0e3100
[ 0.841824] ESI: cd7cbf68 EDI: cd7cbcd0 EBP: cd10ff44 ESP: cd10ff34
[ 0.841824] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 0.841824] CR0: 8005003b CR2: 00000000 CR3: 0d10a000 CR4: 000006b0
[ 0.841824] Stack:
[ 0.841824] c104d499 cd7cbf80 cd0daa00 cd7cbcd0 cd10ff8c c1031202 00000000 00000000
[ 0.841824] cee9d000 00000035 00000001 cd10ff88 c1109351 00000001 00000000 cd0daa50
[ 0.841824] cd7cbcd0 080d3208 cd10ff9c 0000ff00 cd0ee600 cd7cbcd0 cd10ffa4 c10327ea
[ 0.841824] Call Trace:
[ 0.841824] [<c104d499>] ? task_work_run+0x79/0xa0
[ 0.841824] [<c1031202>] do_exit+0x2f2/0x950
[ 0.841824] [<c1109351>] ? vfs_write+0x161/0x1a0
[ 0.841824] [<c10327ea>] do_group_exit+0x4a/0xa0
[ 0.841824] [<c1032858>] SyS_exit_group+0x18/0x20
[ 0.841824] [<c1307a45>] syscall_call+0x7/0xb
[ 0.841824] Code: Bad EIP value.
[ 0.841824] EIP: [<00000000>] 0x0 SS:ESP 0068:cd10ff34
[ 0.841824] CR2: 0000000000000000
dmesg-yocto-xian-45:20131009002407:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
mount: mounting proc on /proc failed: No such device
[ 0.780760] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 0.781899] IP: [<c110a470>] __fput+0x50/0x380
[ 0.782253] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
[ 0.782253] Oops: 0000 [#1] DEBUG_PAGEALLOC
[ 0.782253] Modules linked in:
[ 0.782253] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 0.782253] Workqueue: events delayed_fput
[ 0.782253] task: c0035f90 ti: ce866000 task.ti: ce866000
[ 0.782253] EIP: 0060:[<c110a470>] EFLAGS: 00010212 CPU: 0
[ 0.782253] EIP is at __fput+0x50/0x380
[ 0.782253] EAX: 00000000 EBX: cd0e3700 ECX: 00000000 EDX: 0000001d
[ 0.782253] ESI: 00000010 EDI: 00000000 EBP: ce867e98 ESP: ce867e70
[ 0.782253] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 0.782253] CR0: 8005003b CR2: 00000000 CR3: 0d10a000 CR4: 000006b0
[ 0.782253] Stack:
[ 0.782253] 00000246 00000000 00000002 00000000 00000000 00000000 00000000 00000000
[ 0.782253] 00000000 c0124540 ce867ea4 c110a7c9 c148d640 ce867efc c1048fb9 00000000
[ 0.782253] 00000002 00000000 c1048f81 00000000 00000000 00000000 0019ebc7 c0083400
[ 0.782253] Call Trace:
[ 0.782253] [<c110a7c9>] delayed_fput+0x29/0x30
[ 0.782253] [<c1048fb9>] process_one_work+0x2f9/0x650
[ 0.782253] [<c1048f81>] ? process_one_work+0x2c1/0x650
[ 0.782253] [<c104a8ef>] worker_thread+0x28f/0x610
[ 0.782253] [<c104a660>] ? cancel_delayed_work_sync+0x20/0x20
[ 0.782253] [<c1050902>] kthread+0x92/0xa0
[ 0.782253] [<c130ed9b>] ret_from_kernel_thread+0x1b/0x30
[ 0.782253] [<c1050870>] ? kthread_create_on_node+0xd0/0xd0
[ 0.782253] Code: 00 b8 ad 5e 41 c1 e8 b0 fe f4 ff e8 fb b1 1f 00 8b 43 10 89 c1 89 45 e8 8b 53 40 89 d0 83 e0 02 83 f8 01 19 f6 83 e6 08 83 c6 08 <8b> 01 25 00 f0 ff ff 66 3d 00 40 0f 84 2f 02 00 00 81 e2 00 00
[ 0.782253] EIP: [<c110a470>] __fput+0x50/0x380 SS:ESP 0068:ce867e70
[ 0.782253] CR2: 0000000000000000
[ 0.810230] ---[ end trace 30f0c5539123580d ]---
[ 0.815604] Kernel panic - not syncing: CRED: put_cred_rcu() sees cd0c6c00 with usage -1
dmesg-yocto-xps-4:20131009081942:i386-randconfig-r8-1005:3.12.0-rc1-00050-g0c44c2d:391
mount: mounting proc on /proc failed: No such device
[ 0.510689] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 0.511333] IP: [<c110a470>] __fput+0x50/0x380
[ 0.511670] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
[ 0.511670] Oops: 0000 [#1] DEBUG_PAGEALLOC
[ 0.511670] Modules linked in:
[ 0.511670] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 3.12.0-rc1-00050-g0c44c2d #391
[ 0.511670] Workqueue: events delayed_fput
[ 0.511670] task: c0035f90 ti: ce866000 task.ti: ce866000
[ 0.511670] EIP: 0060:[<c110a470>] EFLAGS: 00010212 CPU: 0
[ 0.511670] EIP is at __fput+0x50/0x380
[ 0.511670] EAX: 00000000 EBX: cd0e3200 ECX: 00000000 EDX: 0000001d
[ 0.511670] ESI: 00000010 EDI: 00000000 EBP: ce867e98 ESP: ce867e70
[ 0.511670] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 0.511670] CR0: 8005003b CR2: 00000000 CR3: 0d10b000 CR4: 000006b0
[ 0.511670] Stack:
[ 0.511670] 00000246 00000000 00000002 00000000 00000000 00000000 00000000 00000000
[ 0.511670] 00000000 c0124540 ce867ea4 c110a7c9 c148d640 ce867efc c1048fb9 00000000
[ 0.511670] 00000002 00000000 c1048f81 00000000 00000000 00000000 0019ebc7 c0083400
[ 0.511670] Call Trace:
[ 0.511670] [<c110a7c9>] delayed_fput+0x29/0x30
[ 0.511670] [<c1048fb9>] process_one_work+0x2f9/0x650
[ 0.511670] [<c1048f81>] ? process_one_work+0x2c1/0x650
[ 0.511670] [<c104a8ef>] worker_thread+0x28f/0x610
[ 0.511670] [<c104a660>] ? cancel_delayed_work_sync+0x20/0x20
[ 0.511670] [<c1050902>] kthread+0x92/0xa0
[ 0.511670] [<c130ed9b>] ret_from_kernel_thread+0x1b/0x30
[ 0.511670] [<c1050870>] ? kthread_create_on_node+0xd0/0xd0
[ 0.511670] Code: 00 b8 ad 5e 41 c1 e8 b0 fe f4 ff e8 fb b1 1f 00 8b 43 10 89 c1 89 45 e8 8b 53 40 89 d0 83 e0 02 83 f8 01 19 f6 83 e6 08 83 c6 08 <8b> 01 25 00 f0 ff ff 66 3d 00 40 0f 84 2f 02 00 00 81 e2 00 00
[ 0.511670] EIP: [<c110a470>] __fput+0x50/0x380 SS:ESP 0068:ce867e70
[ 0.511670] CR2: 0000000000000000
[ 0.526608] ---[ end trace 490bc283e6fc34f9 ]---
[ 0.530504] Kernel panic - not syncing: CRED: put_cred_rcu() sees cd0c6d00 with usage -1
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