Public bug reported:
While mounting two samba shares from /etc/fstab (they get mounted during
boot) the system sometimes fails to mount with the following error
Jul 28 18:53:58 E0PC02 kernel: [ 22.039137] BUG: unable to handle kernel NULL
pointer dereference at 00000004
Jul 28 18:53:58 E0PC02 kernel: [ 22.039147] IP: [<c124d0aa>]
crypto_larval_kill+0x1a/0x60
Jul 28 18:53:58 E0PC02 kernel: [ 22.039159] *pde = 30fa1067 *pte = 00000000
Jul 28 18:53:58 E0PC02 kernel: [ 22.039165] Oops: 0002 [#1] SMP
Jul 28 18:53:58 E0PC02 kernel: [ 22.039171] last sysfs file:
/sys/devices/virtual/bdi/cifs-2/uevent
Jul 28 18:53:58 E0PC02 kernel: [ 22.039175] Modules linked in: nls_utf8 cifs
binfmt_misc parport_pc ppdev snd_ens1371 gameport snd_intel8x0 snd_ac97_codec
ac97_bus snd_pcm nvidia(P) snd_seq_midi
snd_rawmidi snd_seq_midi_event snd_seq qt1010 snd_timer snd_seq_device snd
ir_lirc_codec lirc_dev zl10353 ir_sony_decoder ir_jvc_decoder soundcore
ir_rc6_decoder dvb_usb_gl861 ir_rc5_decoder dvb_us
b ir_nec_decoder shpchp snd_page_alloc dvb_core rc_core dcdbas lp parport
usbhid e1000 hid floppy
Jul 28 18:53:58 E0PC02 kernel: [ 22.039238]
Jul 28 18:53:58 E0PC02 kernel: [ 22.039242] Pid: 992, comm: mount.cifs
Tainted: P 2.6.38-10-generic #46-Ubuntu Dell Computer Corporation
OptiPlex GX270 /0U1325
Jul 28 18:53:58 E0PC02 kernel: [ 22.039254] EIP: 0060:[<c124d0aa>] EFLAGS:
00010286 CPU: 1
Jul 28 18:53:58 E0PC02 kernel: [ 22.039259] EIP is at
crypto_larval_kill+0x1a/0x60
Jul 28 18:53:58 E0PC02 kernel: [ 22.039263] EAX: 00200200 EBX: f0f7c500 ECX:
7ffffffe EDX: 00000000
Jul 28 18:53:58 E0PC02 kernel: [ 22.039267] ESI: f00ebc2c EDI: 00000000 EBP:
f0fdfd40 ESP: f0fdfd3c
Jul 28 18:53:58 E0PC02 kernel: [ 22.039271] DS: 007b ES: 007b FS: 00d8 GS:
00e0 SS: 0068
Jul 28 18:53:58 E0PC02 kernel: [ 22.039276] Process mount.cifs (pid: 992,
ti=f0fde000 task=f0f53f20 task.ti=f0fde000)
Jul 28 18:53:58 E0PC02 kernel: [ 22.039279] Stack:
Jul 28 18:53:58 E0PC02 kernel: [ 22.039282] f00ebc2c f0fdfd50 c124d73d
c1534c60 c124d6e0 f0fdfd70 c124d92a f0c27c00
Jul 28 18:53:58 E0PC02 kernel: [ 22.039295] f0f53f20 f848b721 f0c27c00
f0fdfdb0 ffffffea f0fdfd7c c12538ba 00000000
Jul 28 18:53:58 E0PC02 kernel: [ 22.039308] f0fdfd90 f847835d f0f60200
f0f60200 f0fdfdb0 f0fdfe40 f8464250 00000000
Jul 28 18:53:58 E0PC02 kernel: [ 22.039321] Call Trace:
Jul 28 18:53:58 E0PC02 kernel: [ 22.039327] [<c124d73d>]
crypto_alg_mod_lookup+0x5d/0x80
Jul 28 18:53:58 E0PC02 kernel: [ 22.039333] [<c124d6e0>] ?
crypto_alg_mod_lookup+0x0/0x80
Jul 28 18:53:58 E0PC02 kernel: [ 22.039338] [<c124d92a>]
crypto_alloc_tfm+0x4a/0xb0
Jul 28 18:53:58 E0PC02 kernel: [ 22.039345] [<c12538ba>]
crypto_alloc_shash+0x1a/0x20
Jul 28 18:53:58 E0PC02 kernel: [ 22.039360] [<f847835d>]
cifs_crypto_shash_allocate+0x1d/0x170 [cifs]
Jul 28 18:53:58 E0PC02 kernel: [ 22.039369] [<f8464250>]
cifs_get_tcp_session+0x100/0x5d0 [cifs]
Jul 28 18:53:58 E0PC02 kernel: [ 22.039378] [<c1065ccc>] ?
__request_module+0x11c/0x1a0
Jul 28 18:53:58 E0PC02 kernel: [ 22.039388] [<f8465bfb>]
cifs_mount+0xdb/0x7a0 [cifs]
Jul 28 18:53:58 E0PC02 kernel: [ 22.039397] [<c10fa5cf>] ?
bdi_setup_and_register+0x9f/0xc0
Jul 28 18:53:58 E0PC02 kernel: [ 22.039404] [<c111afe2>] ?
__kmalloc+0x152/0x1a0
Jul 28 18:53:58 E0PC02 kernel: [ 22.039411] [<f8456f3e>] ?
cifs_read_super+0xae/0x290 [cifs]
Jul 28 18:53:58 E0PC02 kernel: [ 22.039419] [<f8456f6e>]
cifs_read_super+0xde/0x290 [cifs]
Jul 28 18:53:58 E0PC02 kernel: [ 22.039427] [<f845717b>]
cifs_do_mount+0x5b/0xe0 [cifs]
Jul 28 18:53:58 E0PC02 kernel: [ 22.039433] [<c10e8f8b>] ?
__get_free_pages+0x2b/0x30
Jul 28 18:53:58 E0PC02 kernel: [ 22.039440] [<c1129495>]
vfs_kern_mount+0x75/0x250
Jul 28 18:53:58 E0PC02 kernel: [ 22.039447] [<c113fc67>] ?
get_fs_type+0x97/0xb0
Jul 28 18:53:58 E0PC02 kernel: [ 22.039454] [<f8457120>] ?
cifs_do_mount+0x0/0xe0 [cifs]
Jul 28 18:53:58 E0PC02 kernel: [ 22.039460] [<c11296ce>]
do_kern_mount+0x3e/0xe0
Jul 28 18:53:58 E0PC02 kernel: [ 22.039466] [<c1142b33>] do_mount+0x1b3/0x1e0
Jul 28 18:53:58 E0PC02 kernel: [ 22.039472] [<c1142ecb>] sys_mount+0x6b/0xa0
Jul 28 18:53:58 E0PC02 kernel: [ 22.039478] [<c150a194>] syscall_call+0x7/0xb
Jul 28 18:53:58 E0PC02 kernel: [ 22.039482] Code: 89 ec 5d c3 8d b6 00 00 00
00 8d bc 27 00 00 00 00 55 89 e5 53 3e 8d 74 26 00 89 c3 b8 08 ce 75 c1 e8 5b
c0 2b 00 8b 13 8b 43 04 <89> 42 04 89 10 b8 08 ce 75 c1 c7 03 00 01 10 00 c7 43
04 00 02
Jul 28 18:53:58 E0PC02 kernel: [ 22.039561] EIP: [<c124d0aa>]
crypto_larval_kill+0x1a/0x60 SS:ESP 0068:f0fdfd3c
Jul 28 18:53:58 E0PC02 kernel: [ 22.039569] CR2: 0000000000000004
Jul 28 18:53:58 E0PC02 kernel: [ 22.039574] ---[ end trace de297cb4357c179b
]---
System is Ubuntu 11.04 Natty with the latest kernel and userspace
updates. Debugging is problematic since this happens only once in three
months. (Note that the kernel is tainted by nvidia closed source
graphics driver but the bug happens without it too)
** Affects: linux-lts-backport-natty (Ubuntu)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/818004
Title:
unable to handle kernel NULL pointer dereference in
crypto_larval_kill+0x1a/0x60
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-lts-backport-natty/+bug/818004/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
