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My computer has Ubuntu 12.04 installed,everything up-to-date. Kernel version 3.5.0-28-generic.

Since I've update the kernel sing the update-manager a week or two ago, I got 3 kernel crashes, two today.

Here is the message that is logged in kern.log

cat kern.log
May 13 08:55:30 fiberWork72 kernel: [ 2570.993191] chrome[2753]: segfault at 39 ip b315eaf3 sp bff58cc8 error 6 in chrome[b2ec9000+4852000]
May 13 09:29:55 fiberWork72 kernel: [ 4632.697267] chrome[4641]: segfault at 14 ip b42a7220 sp bff598c8 error 4 in chrome[b2ec9000+4852000]
May 13 10:51:22 fiberWork72 kernel: [ 9511.434157] chrome[6316]: segfault at c53547ae ip b414f6d8 sp bff59cb0 error 5 in chrome[b2ec9000+4852000]
May 13 10:57:14 fiberWork72 kernel: [ 9861.824108] tty_check_change: tty->pgrp == NULL!
May 13 10:57:14 fiberWork72 kernel: [ 9862.354145] gvfs-fuse-daemo[6937]: segfault at 10000 ip b7348850 sp bfce8038 error 4 in libc-2.15.so[b72b3000+1a3000]
May 13 10:57:23 fiberWork72 kernel: [ 9870.923605] gvfs-fuse-daemo[7121]: segfault at 10000 ip b7356850 sp bf9db638 error 4 in libc-2.15.so[b72c1000+1a3000]
May 13 10:57:26 fiberWork72 kernel: [ 9874.260228] chrome[7399]: segfault at 76e254f0 ip b41d26d8 sp bfbdda30 error 4 in chrome[b2f4c000+4852000]
May 13 10:57:39 fiberWork72 kernel: [ 9886.871782] type=1400 audit(1368453459.096:32): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/telepathy/mission-control-5" name="/usr/share/gvfs/remote-volume-monitors/" pid=7673 comm="mission-control" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 13 11:04:14 fiberWork72 kernel: [10281.401887] chrome[8910]: segfault at f804e188 ip b43292d4 sp bfbde070 error 5 in chrome[b2f4c000+4852000]
May 13 11:55:17 fiberWork72 kernel: [13339.525130] chrome[9582]: segfault at 200860 ip b41d26d8 sp bfbde070 error 4 in chrome[b2f4c000+4852000]
May 13 12:40:12 fiberWork72 kernel: [16029.629670] chrome[10583]: segfault at 80600 ip b41d26d8 sp bfbdd8c0 error 4 in chrome[b2f4c000+4852000]
May 13 14:59:20 fiberWork72 kernel: [24361.692340] chrome[12451]: segfault at 248600 ip b41d26d8 sp bfbde070 error 4 in chrome[b2f4c000+4852000]
May 13 15:04:53 fiberWork72 kernel: [24694.856520] BUG: unable to handle kernel paging request at 10000010
May 13 15:04:53 fiberWork72 kernel: [24694.856679] IP: [<c12d3587>] radix_tree_next_chunk+0x157/0x2c0
May 13 15:04:53 fiberWork72 kernel: [24694.856814] *pdpt = 000000001a447001 *pde = 0000000000000000 
May 13 15:04:53 fiberWork72 kernel: [24694.856944] Oops: 0000 [#1] SMP 
May 13 15:04:53 fiberWork72 kernel: [24694.857024] Modules linked in: bnep rfcomm bluetooth binfmt_misc snd_hda_codec_via snd_hda_intel radeon snd_hda_codec kvm snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq ttm snd_timer drm_kms_helper snd_seq_device drm snd psmouse soundcore snd_page_alloc i2c_algo_bit microcode serio_raw ppdev sp5100_tco parport_pc mac_hid k10temp i2c_piix4 asus_atk0110 shpchp wmi lp parport atl1c pata_atiixp ahci libahci
May 13 15:04:53 fiberWork72 kernel: [24694.858011] 
May 13 15:04:53 fiberWork72 kernel: [24694.858051] Pid: 12577, comm: chrome Not tainted 3.5.0-28-generic #48~precise1-Ubuntu System manufacturer System Product Name/M4A78LT-M-LE
May 13 15:04:53 fiberWork72 kernel: [24694.858321] EIP: 0060:[<c12d3587>] EFLAGS: 00210246 CPU: 0
May 13 15:04:53 fiberWork72 kernel: [24694.858438] EIP is at radix_tree_next_chunk+0x157/0x2c0
May 13 15:04:53 fiberWork72 kernel: [24694.858548] EAX: 00000000 EBX: 10000000 ECX: 00000000 EDX: 00000000
May 13 15:04:53 fiberWork72 kernel: [24694.858677] ESI: 00000000 EDI: 00000540 EBP: cededd10 ESP: cededce0
May 13 15:04:53 fiberWork72 kernel: [24694.858807]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
May 13 15:04:53 fiberWork72 kernel: [24694.858919] CR0: 8005003b CR2: 10000010 CR3: 1ce08000 CR4: 000007f0
May 13 15:04:53 fiberWork72 kernel: [24694.859049] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
May 13 15:04:53 fiberWork72 kernel: [24694.859178] DR6: ffff0ff0 DR7: 00000400
May 13 15:04:53 fiberWork72 kernel: [24694.859261] Process chrome (pid: 12577, ti=cedec000 task=f170e580 task.ti=cedec000)
May 13 15:04:53 fiberWork72 kernel: [24694.859416] Stack:
May 13 15:04:53 fiberWork72 kernel: [24694.859460]  d5c5c980 00000006 00000000 f6169900 cededd20 00000000 00000110 c110cc2d
May 13 15:04:53 fiberWork72 kernel: [24694.859662]  00000000 00000003 cededde8 000004ff cededd38 c12d38bd f16d350c cededdb0
May 13 15:04:53 fiberWork72 kernel: [24694.859863]  000004ff 00000500 c18c6700 0000000e cededda8 000004d0 cededd68 c1117a95
May 13 15:04:53 fiberWork72 kernel: [24694.860063] Call Trace:
May 13 15:04:53 fiberWork72 kernel: [24694.860123]  [<c110cc2d>] ? free_hot_cold_page_list+0x3d/0x90
May 13 15:04:53 fiberWork72 kernel: [24694.860246]  [<c12d38bd>] radix_tree_gang_lookup_slot+0x7d/0xb0
May 13 15:04:53 fiberWork72 kernel: [24694.860374]  [<c1117a95>] shmem_find_get_pages_and_swap+0x35/0xf0
May 13 15:04:53 fiberWork72 kernel: [24694.860504]  [<c111ae83>] shmem_undo_range+0x113/0x660
May 13 15:04:53 fiberWork72 kernel: [24694.860619]  [<c15cf946>] ? __slab_free+0xe2/0x1e7
May 13 15:04:53 fiberWork72 kernel: [24694.860722]  [<c111b400>] shmem_truncate_range+0x30/0x50
May 13 15:04:53 fiberWork72 kernel: [24694.860836]  [<c111b63c>] shmem_evict_inode+0xac/0x130
May 13 15:04:53 fiberWork72 kernel: [24694.860947]  [<c116b1f6>] evict+0x96/0x170
May 13 15:04:53 fiberWork72 kernel: [24694.861037]  [<c116b9bf>] iput_final+0xaf/0x130
May 13 15:04:53 fiberWork72 kernel: [24694.861135]  [<c116ba6e>] iput+0x2e/0x40
May 13 15:04:53 fiberWork72 kernel: [24694.861223]  [<c1166797>] dentry_iput+0x77/0xc0
May 13 15:04:53 fiberWork72 kernel: [24694.861320]  [<c1167f91>] dput+0x101/0x1f0
May 13 15:04:53 fiberWork72 kernel: [24694.861410]  [<c1154ee5>] __fput+0x155/0x200
May 13 15:04:53 fiberWork72 kernel: [24694.861504]  [<c1154fad>] fput+0x1d/0x30
May 13 15:04:53 fiberWork72 kernel: [24694.861590]  [<c112be42>] remove_vma+0x32/0x60
May 13 15:04:53 fiberWork72 kernel: [24694.861687]  [<c112d74c>] do_munmap+0x1bc/0x220
May 13 15:04:53 fiberWork72 kernel: [24694.861787]  [<c1256c4b>] sys_shmdt+0x9b/0x160
May 13 15:04:53 fiberWork72 kernel: [24694.861884]  [<c1257028>] sys_ipc+0x1f8/0x250
May 13 15:04:53 fiberWork72 kernel: [24694.867531]  [<c12dacc0>] ? copy_to_user+0x40/0x60
May 13 15:04:53 fiberWork72 kernel: [24694.873151]  [<c15e10f4>] syscall_call+0x7/0xb
May 13 15:04:53 fiberWork72 kernel: [24694.878772] Code: 0f 84 fe 00 00 00 83 c0 04 8b 1c 83 85 db 0f 84 46 ff ff ff 83 ea 06 89 f8 89 d1 d3 e8 83 e0 3f 8b 4d f0 85 c9 0f 85 51 ff ff ff <8b> 74 83 10 85 f6 0f 94 c1 e9 51 ff ff ff 8d 76 00 85 ff 0f 85 
May 13 15:04:53 fiberWork72 kernel: [24694.891443] EIP: [<c12d3587>] radix_tree_next_chunk+0x157/0x2c0 SS:ESP 0068:cededce0
May 13 15:04:53 fiberWork72 kernel: [24694.897775] CR2: 0000000010000010
May 13 15:04:53 fiberWork72 kernel: [24694.941873] ---[ end trace 6394ab261eabcd85 ]---

I see a lot fo chrome segfault messages. I have nothing very different from a regular ubuntu installation.

Today, I experienced a lot of firefox crashes, which is not common to happen.

Can someone give me some light ?

share|improve this question
    
Didn't see the typo, thanks for correcting it... –  rockskull May 13 '13 at 19:07
    
Have you tried running a memory test? Faulty memory may cause a lot of headache. –  Lekensteyn Jun 6 '13 at 13:58
    
Well, I couldn't do much testing on the machine. I had reinstalled Ubuntu 12.04 and It seemed ok. But I got a new machine at work I cound't fuigure the problem out. –  rockskull Jun 8 '13 at 23:25
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