Kernel Errors
I had a machine lock up on me last night - it would not respond to the
keyboard, and although it would allow a password prompt from an ssh
session, it would hang at login. I went looking through syslog, and
I've found some unsettling entries.
Here are the entries a bit before the lock-up:
Sep 16 14:02:01 atlas kernel: invalid operand: 0000
Sep 16 14:02:01 atlas kernel: CPU: 0
Sep 16 14:02:01 atlas kernel: EIP: 0010:[__free_pages_ok+40/500] Tainted: P
Sep 16 14:02:01 atlas kernel: EFLAGS: 00010282
Sep 16 14:02:01 atlas kernel: eax: c114a8dc ebx: c11fa180 ecx: c11fa180 edx: c02546e0
Sep 16 14:02:01 atlas kernel: esi: c11fa180 edi: 00000000 ebp: 00000070 esp: c1217f28
Sep 16 14:02:01 atlas kernel: ds: 0018 es: 0018 ss: 0018
Sep 16 14:02:01 atlas kernel: Process kswapd (pid: 4, stackpage=c1217000)
Sep 16 14:02:01 atlas kernel: Stack: c216f7e0 c11fa180 0000000d 00000070 c11fa180 000001d0 c216f7e0 c11fa180
Sep 16 14:02:01 atlas kernel: c0126762 c01274d7 c012679b 00000020 000001d0 00000020 00000006 00000006
Sep 16 14:02:01 atlas kernel: c1216000 000004cf 000001d0 c0254808 c0126996 00000006 0000001a 00000006
Sep 16 14:02:01 atlas kernel: Call Trace: [shrink_cache+458/732] [__free_pages+27/28] [shrink_cache+515/732] [shrink_caches+86/124] [try_to_fre
e_pages+55/88]
Sep 16 14:02:01 atlas kernel: [kswapd_balance_pgdat+67/140] [kswapd_balance+18/40] [kswapd+153/188] [kernel_thread+40/56]
Sep 16 14:02:01 atlas kernel:
Sep 16 14:02:01 atlas kernel: Code: 0f 0b 89 d8 2b 05 cc 8e 2a c0 c1 f8 06 3b 05 c0 8e 2a c0 72
Sep 16 14:08:01 atlas kernel: invalid operand: 0000
Sep 16 14:08:01 atlas kernel: CPU: 0
Sep 16 14:08:01 atlas kernel: EIP: 0010:[__free_pages_ok+40/500] Tainted: P
Sep 16 14:08:01 atlas kernel: EFLAGS: 00010282
Sep 16 14:08:01 atlas kernel: eax: c116795c ebx: c11df040 ecx: c11df040 edx: c02546e0
Sep 16 14:08:01 atlas kernel: esi: c11df040 edi: 00000000 ebp: 00000086 esp: c6987e2c
Sep 16 14:08:01 atlas kernel: ds: 0018 es: 0018 ss: 0018
Sep 16 14:08:01 atlas kernel: Process cron (pid: 438, stackpage=c6987000)
Sep 16 14:08:01 atlas kernel: Stack: c216f600 c11df040 00000020 00000086 c11df040 000001f0 c216f600 c11df040
Sep 16 14:08:01 atlas kernel: c0126762 c01274d7 c012679b 00000020 000001f0 00000020 00000006 00000006
Sep 16 14:08:01 atlas kernel: c6986000 0000053e 000001f0 c0254808 c0126996 00000006 00000018 00000006
Sep 16 14:08:01 atlas kernel: Call Trace: [shrink_cache+458/732] [__free_pages+27/28] [shrink_cache+515/732] [shrink_caches+86/124] [try_to_fre
e_pages+55/88]
Sep 16 14:08:01 atlas kernel: [balance_classzone+78/360] [__alloc_pages+262/356] [_alloc_pages+22/24] [__get_free_pages+10/24] [pte_alloc+60
/152] [copy_page_range+221/408]
Sep 16 14:08:01 atlas kernel: [copy_mm+546/700] [do_fork+1014/1648] [process_timeout+0/72] [sys_time+20/84] [sys_fork+20/28] [system_call+51
/56]
Sep 16 14:08:01 atlas kernel:
Sep 16 14:08:01 atlas kernel: Code: 0f 0b 89 d8 2b 05 cc 8e 2a c0 c1 f8 06 3b 05 c0 8e 2a c0 72
Scrolling up a bit more, I've found more odd log entries. From a bit of
googling, it seems they are related to ReiserFS.
Sep 11 18:20:13 atlas kernel: Directory sread (sector 0x1d) failed
Sep 11 18:20:13 atlas kernel: attempt to access beyond end of device
Sep 11 18:20:13 atlas kernel: 02:00: rw=0, want=15, limit=4
This goes on for several entries.
I am simply curious if anyone has seen this behavior and what
solutions/explanations you have found.
Thanks,
Rob
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