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Date: Fri, 1 Aug 2014 09:25:06 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Fabian Frederick <fabf@...net.be>
Cc: Jet Chen <jet.chen@...el.com>, Su Tao <tao.su@...el.com>,
Yuanhan Liu <yuanhan.liu@...el.com>, LKP <lkp@...org>,
linux-kernel@...r.kernel.org
Subject: [befs] BUG: unable to handle kernel paging request at cfc07000
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit dac52fc1826a788d2591a4f77e3c482b30f577e2
Author: Fabian Frederick <fabf@...net.be>
AuthorDate: Thu Apr 3 14:50:23 2014 -0700
Commit: Linus Torvalds <torvalds@...ux-foundation.org>
CommitDate: Thu Apr 3 16:21:25 2014 -0700
BEFS: logging cleanup
Summary:
- all printk(KERN_foo converted to pr_foo()
- add pr_fmt and remove redundant prefixes
- convert befs_() to va_format (based on patch by Joe Perches)
- remove non standard %Lu
- use __func__ for all debugging
[akpm@...ux-foundation.org: fix printk warnings, reported by Fengguang]
Signed-off-by: Fabian Frederick <fabf@...net.be>
Cc: Joe Perches <joe@...ches.com>
Cc: Fengguang Wu <fengguang.wu@...il.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
+--------------------------------------------+------------+------------+---------------+
| | 91a52ab7d6 | dac52fc182 | next-20140730 |
+--------------------------------------------+------------+------------+---------------+
| boot_successes | 1000 | 895 | 159 |
| boot_failures | 0 | 5 | 2 |
| BUG:unable_to_handle_kernel_paging_request | 0 | 5 | 2 |
| Oops | 0 | 5 | 2 |
| EIP_is_at_strnlen | 0 | 5 | 2 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 5 | 2 |
| backtrace:do_mount | 0 | 5 | 2 |
| backtrace:SyS_mount | 0 | 5 | 2 |
+--------------------------------------------+------------+------------+---------------+
[ 6.576645] power_supply test_battery: prop PRESENT=1
[ 6.578273] power_supply test_usb: uevent
[ 6.579644] power_supply test_usb: POWER_SUPPLY_NAME=test_usb
[ 6.581395] BUG: unable to handle kernel paging request at cfc07000
[ 6.583373] IP: [<c13915ef>] strnlen+0x9/0x19
[ 6.584678] *pde = 13bc1067 *pte = 0fc07060
[ 6.584678] Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
[ 6.584678] CPU: 0 PID: 483 Comm: mount Not tainted 3.14.0-07551-gdac52fc #1
[ 6.584678] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 6.584678] task: d0d29500 ti: d006e000 task.ti: d006e000
[ 6.584678] EIP: 0060:[<c13915ef>] EFLAGS: 00010097 CPU: 0
[ 6.584678] EIP is at strnlen+0x9/0x19
[ 6.584678] EAX: cfc07000 EBX: d006fe40 ECX: cfc06200 EDX: fffff1fe
[ 6.584678] ESI: d006fe44 EDI: c2247728 EBP: d006fcb8 ESP: d006fcb8
[ 6.584678] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 6.584678] CR0: 8005003b CR2: cfc07000 CR3: 10f33000 CR4: 000006d0
[ 6.584678] Stack:
[ 6.584678] d006fcd4 c138e850 cfc06200 c2247361 d006fe40 d006fe44 c1acbda3 d006fd1c
[ 6.584678] c138fa8f c1e13600 d006ffff c183ffff 879a3bef d006fcfc c10824cf 000003ce
[ 6.584678] c224735a c1acbda3 c2247728 c2247361 ff0a0004 ffffffff c105ffff c224735a
[ 6.584678] Call Trace:
[ 6.584678] [<c138e850>] string.isra.5+0x29/0x93
[ 6.584678] [<c138fa8f>] vsnprintf+0x159/0x281
[ 6.584678] [<c183ffff>] ? _raw_spin_unlock_irq+0x5/0x3e
[ 6.584678] [<c10824cf>] ? tick_program_event+0x22/0x26
[ 6.584678] [<c105ffff>] ? load_balance+0x3fc/0x681
[ 6.584678] [<c138fdd7>] pointer.isra.16+0x220/0x37e
[ 6.584678] [<c138e850>] ? string.isra.5+0x29/0x93
[ 6.584678] [<c138faca>] vsnprintf+0x194/0x281
[ 6.584678] [<c183ff00>] ? _raw_spin_lock_irq+0x62/0x72
[ 6.584678] [<c105ffff>] ? load_balance+0x3fc/0x681
[ 6.584678] [<c107ffff>] ? pc_clock_adjtime+0x33/0x4b
[ 6.584678] [<c138ff49>] vscnprintf+0x14/0x25
[ 6.584678] [<c107080b>] vprintk_emit+0x249/0x451
[ 6.584678] [<c1832438>] printk+0x38/0x3a
[ 6.584678] [<c1204ded>] befs_debug+0x37/0x39
[ 6.584678] [<c120517d>] befs_dump_super_block+0x30/0x28d
[ 6.584678] [<c1204b0f>] ? befs_load_sb+0x127/0x13b
[ 6.584678] [<c1206186>] befs_fill_super+0x22d/0x384
[ 6.584678] [<c1380612>] ? disk_name+0x30/0x81
[ 6.584678] [<c10c7ab8>] ? ns_test_super+0x11/0x11
[ 6.584678] [<c10c8c8e>] mount_bdev+0x113/0x15b
[ 6.584678] [<c10bf44a>] ? arch_local_irq_save+0x12/0x17
[ 6.584678] [<c10c2c53>] ? __kmalloc_track_caller+0x103/0x127
[ 6.584678] [<c120578a>] befs_mount+0x1a/0x1f
[ 6.584678] [<c1205f59>] ? __ilog2_u32+0xf/0xf
[ 6.584678] [<c10c8e39>] mount_fs+0x16/0xaf
[ 6.584678] [<c10ab424>] ? __alloc_percpu+0xa/0xc
[ 6.584678] [<c10dae50>] ? alloc_vfsmnt+0x93/0x134
[ 6.584678] [<c10dba5e>] vfs_kern_mount+0x43/0x9f
[ 6.584678] [<c10dce4a>] do_mount+0x5b7/0x6c4
[ 6.584678] [<c10a8400>] ? strndup_user+0x2c/0x3d
[ 6.584678] [<c10dd119>] SyS_mount+0x77/0xa4
[ 6.584678] [<c1840b0e>] syscall_call+0x7/0xb
[ 6.584678] Code: 00 00 4f eb 02 31 ff 89 f8 5f 5d c3 55 85 c9 89 e5 57 89 c7 74 07 89 d0 f2 ae 75 01 4f 89 f8 5f 5d c3 55 89 c1 89 e5 89 c8 eb 06 <80> 38 00 74 07 40 4a 83 fa ff 75 f4 29 c8 5d c3 55 83 c9 ff 89
[ 6.584678] EIP: [<c13915ef>] strnlen+0x9/0x19 SS:ESP 0068:d006fcb8
[ 6.584678] CR2: 00000000cfc07000
[ 6.584678] ---[ end trace d80bc704897c976c ]---
[ 6.584678] Kernel panic - not syncing: Fatal exception
git bisect start v3.15 v3.14 --
git bisect bad 674366e90e5a2430e3ddef40ce51512d681944e4 # 22:06 0- 2 Merge tag 'pci-v3.15-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
git bisect bad 9f800363bb0ea459e15bef0928a72c88d374e489 # 22:06 0- 1 Merge tag 'fixes-non-critical-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
git bisect good 1aabc5990d205cdb0789a1c26143c53601e9bb07 # 22:46 900+ 0 x86: Fix dumpstack_64 to keep state of "used" variable in loop
git bisect good d0cb5f71c5cde8e1ef6d03983641366800ceabdb # 23:44 900+ 0 Merge tag 'vfio-v3.15-rc1' of git://github.com/awilliam/linux-vfio
git bisect bad d15fee814d8d30bbb4859ef8fef7a1f96327635b # 23:44 0- 2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
git bisect bad 4a4389abdd9822fdf3cc2ac6ed87eb811fd43acc # 23:44 0- 4 Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
git bisect bad 3cf59142bcd391680beb6932838fe09a73947705 # 23:44 0- 1 Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
git bisect bad 76ca7d1cca761bb9712dfcad9a27d70b520874ae # 23:44 0- 2 Merge branch 'akpm' (incoming from Andrew)
git bisect good 70d14fcf365c1b20d380d542ec53906f2b5e2435 # 00:29 900+ 0 MAINTAINERS: add backlight co-maintainers
git bisect good 98e2d21faaf96d879e2746cedd96f5c38c04f9b3 # 02:11 900+ 1 rtc: rtc-sirfsoc: remove unnecessary OOM messages
git bisect good fda9909ddaab13fb7b35b94f204623c1f9571fc7 # 02:47 900+ 0 rtc: pm8xxx: move device_init_wakeup() before rtc_register
git bisect bad 2cc88f3a5f16ae9a3c8f54de1b2fd4a397b36075 # 02:53 0- 1 nilfs2: implementation of NILFS_IOCTL_SET_SUINFO ioctl
git bisect good 84ee353df07e9beec200da44ac70f583449fffb1 # 05:13 900+ 0 fs/minix/inode.c: add __init to init_inodecache()
git bisect bad 5f356fd4d75fd66e62c803fc7a684863c4b38e59 # 05:33 104- 1 fs/coda/inode.c: add __init to init_inodecache()
git bisect good 91a52ab7d664a1c8972a0ecb30955d34aea54d7f # 07:03 900+ 0 fs/befs/linuxvfs.c: add __init to befs_init_inodecache()
git bisect bad dac52fc1826a788d2591a4f77e3c482b30f577e2 # 07:09 0- 1 BEFS: logging cleanup
# first bad commit: [dac52fc1826a788d2591a4f77e3c482b30f577e2] BEFS: logging cleanup
git bisect good 91a52ab7d664a1c8972a0ecb30955d34aea54d7f # 07:15 1000+ 0 fs/befs/linuxvfs.c: add __init to befs_init_inodecache()
git bisect bad fcf6395d41087217d4b88d5b2ad7a1ce66ca6ced # 07:15 0- 2 Add linux-next specific files for 20140730
git bisect bad 7c909b09372d5b064651202bf236b63caddd1777 # 07:39 219- 1 Merge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux
git bisect bad 5c159783e8086645dd7aa42e35c531ad0e8dd16d # 07:51 9- 1 Add linux-next specific files for 20140731
This script may reproduce the error.
----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
initrd=yocto-minimal-i386.cgz
wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/raw/master/initrd/$initrd
kvm=(
qemu-system-x86_64
-cpu kvm64
-enable-kvm
-kernel $kernel
-initrd $initrd
-m 320
-smp 1
-net nic,vlan=1,model=e1000
-net user,vlan=1
-boot order=nc
-no-reboot
-watchdog i6300esb
-rtc base=localtime
-serial stdio
-display none
-monitor null
)
append=(
hung_task_panic=1
earlyprintk=ttyS0,115200
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
panic=10
softlockup_panic=1
nmi_watchdog=panic
load_ramdisk=2
prompt_ramdisk=0
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
drbd.minor_count=8
)
"${kvm[@]}" --append "${append[*]}"
----------------------------------------------------------------------------
Thanks,
Fengguang
View attachment "dmesg-yocto-ivb44-87:20140801070957:i386-randconfig-j0-07311235::" of type "text/plain" (63414 bytes)
Download attachment "i386-randconfig-j0-07311235-fcf6395d41087217d4b88d5b2ad7a1ce66ca6ced-BUG:-unable-to-handle-kernel-paging-request-32827.log" of type "application/octet-stream" (134913 bytes)
View attachment "config-3.14.0-07551-gdac52fc" of type "text/plain" (69249 bytes)
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