Public bug reported:
I have a particular directory on an EXT4 filesystem on a RAID 10, f2
partition that can no longer be accessed. Everytime I do so, I get a
kernel Oops, and the user process crashes with a Seg fault. This problem
only started today, but I am unable to reboot to see if that clears the
problem at the moment, becuase this is a production server, and this
directory is not important, luckilly.
eg: doing an "ls" of the directory gives:
Jul 28 09:10:50 zaphod kernel: [1017010.723861] BUG: unable to handle kernel
NULL pointer dereference at 00000000
Jul 28 09:10:50 zaphod kernel: [1017010.723994] IP: [<c019e347>]
file_ra_state_init+0x7/0x20
Jul 28 09:10:50 zaphod kernel: [1017010.724085] *pdpt = 00000000265e7001 *pde =
0000000000000000
Jul 28 09:10:50 zaphod kernel: [1017010.724201] Oops: 0000 [#9] SMP
Jul 28 09:10:50 zaphod kernel: [1017010.724311] last sysfs file:
/sys/devices/virtual/block/md1/md/raid_disks
Jul 28 09:10:50 zaphod kernel: [1017010.724360] Modules linked in: tun
input_polldev video output nfsd auth_rpcgss exportfs nfs lockd nfs_acl sunrpc
lp snd_via82xx gameport snd_ac97_codec ac97_bus i2c_viapro snd_pcm snd_timer
snd_page_alloc snd_mpu401_uart via_ircc snd_rawmidi snd_seq_device psmouse irda
via_agp ppdev snd serio_raw agpgart crc_ccitt pcspkr parport_pc osst soundcore
shpchp parport st via_rhine mii aic7xxx scsi_transport_spi raid10 raid456
async_xor async_memcpy async_tx xor raid1 raid0 multipath linear fbcon tileblit
font bitblit softcursor
Jul 28 09:10:50 zaphod kernel: [1017010.726451]
Jul 28 09:10:50 zaphod kernel: [1017010.726495] Pid: 26752, comm: ls Tainted: G
D (2.6.28-13-server #45-Ubuntu)
Jul 28 09:10:50 zaphod kernel: [1017010.726550] EIP: 0060:[<c019e347>] EFLAGS:
00010206 CPU: 0
Jul 28 09:10:50 zaphod kernel: [1017010.726597] EIP is at
file_ra_state_init+0x7/0x20
Jul 28 09:10:50 zaphod kernel: [1017010.726642] EAX: f6427408 EBX: f64273c0
ECX: 00000000 EDX: 00000000
Jul 28 09:10:50 zaphod kernel: [1017010.726689] ESI: 00000000 EDI: c4769e3c
EBP: f6573ea8 ESP: f6573e90
Jul 28 09:10:50 zaphod kernel: [1017010.726737] DS: 007b ES: 007b FS: 00d8 GS:
0033 SS: 0068
Jul 28 09:10:50 zaphod kernel: [1017010.726784] Process ls (pid: 26752,
ti=f6572000 task=f13dd7f0 task.ti=f6572000)
Jul 28 09:10:50 zaphod kernel: [1017010.726837] Stack:
Jul 28 09:10:50 zaphod kernel: [1017010.726878] c01c47ad f6434180 d90e0a18
f64273c0 f6573f04 00000000 f6573ec0 c01c4947
Jul 28 09:10:50 zaphod kernel: [1017010.727161] f64273c0 00000000 00000000
00098801 f6573f70 c01d1b59 f6573f04 00098801
Jul 28 09:10:50 zaphod kernel: [1017010.727513] f6573ed8 f6573f04 f6573eec
00098800 c20ed000 00000001 00000024 f6573f0c
Jul 28 09:10:50 zaphod kernel: [1017010.727904] Call Trace:
Jul 28 09:10:50 zaphod kernel: [1017010.727947] [<c01c47ad>] ?
__dentry_open+0x19d/0x260
Jul 28 09:10:50 zaphod kernel: [1017010.728030] [<c01c4947>] ?
nameidata_to_filp+0x47/0x60
Jul 28 09:10:50 zaphod kernel: [1017010.728110] [<c01d1b59>] ?
do_filp_open+0x1d9/0x7c0
Jul 28 09:10:50 zaphod kernel: [1017010.728193] [<c033d759>] ?
tty_ioctl+0x319/0x650
Jul 28 09:10:50 zaphod kernel: [1017010.728276] [<c01dabd0>] ?
alloc_fd+0xe0/0x100
Jul 28 09:10:50 zaphod kernel: [1017010.728357] [<c01c449f>] ?
do_sys_open+0x5f/0x120
Jul 28 09:10:50 zaphod kernel: [1017010.728436] [<c01d33be>] ?
do_vfs_ioctl+0x5e/0x200
Jul 28 09:10:50 zaphod kernel: [1017010.728516] [<c01c45c9>] ?
sys_open+0x29/0x40
Jul 28 09:10:50 zaphod kernel: [1017010.728595] [<c0109eef>] ?
sysenter_do_call+0x12/0x2f
Jul 28 09:10:50 zaphod kernel: [1017010.728677] Code: 8d 74 26 00 a1 00 4b 6f
c0 a3 18 42 87 c0 eb c6 0f 0b eb fe 55 89 e5 5d c3 8d 74 26 00 8d bc 27 00 00
00 00 55 8b 52 40 89 e5 5d <8b> 12 c7 40 14 ff ff ff ff c7 40 18 ff ff ff ff 89
50 0c c3 90
Jul 28 09:10:50 zaphod kernel: [1017010.730012] EIP: [<c019e347>]
file_ra_state_init+0x7/0x20 SS:ESP 0068:f6573e90
Jul 28 09:10:50 zaphod kernel: [1017010.731092] ---[ end trace bf36058c0dc408da
]---
ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
HibernationDevice: RESUME=UUID=63c3b61e-6a06-48b2-87ff-dc8753fad9a7
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType:
Package: linux-image-2.6.28-13-server 2.6.28-13.45
ProcCmdLine: root=/dev/md1 ro quiet splash
ProcEnviron:
PATH=(custom, user)
LANG=en_AU.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.28-13.45-server
SourcePackage: linux
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386
--
RAID causing kernel oops?
https://bugs.launchpad.net/bugs/405561
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