Opses

From: by way of Markus Schaber (markus.schaber@student.uni-ulm.de)
Date: Thu Feb 14 2002 - 08:33:58 EST


Hello,

[I subscribed to the list, so no Cc:s are necessary.]

After some days of uptime, I always get an Oops in the kswapd. After that, there are some other Oopses (mostly "cannot handle Kernel page request", but also some other oopses). But as far as I can see, the kswapd is always the first Oops after the reboot.

This is what ksymoops tells me:

***
multimedia:/var/log# ksymoops <messages
ksymoops 2.4.3 on i686 2.4.17. Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.17/ (default)
     -m /boot/System.map-2.4.17 (default)

Warning: You did not tell me where to find symbol information. I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc. ksymoops -h explains the options.

Feb 14 09:08:04 multimedia kernel: c0140a17
Feb 14 09:08:04 multimedia kernel: Oops: 0002
Feb 14 09:08:04 multimedia kernel: CPU: 0
Feb 14 09:08:04 multimedia kernel: EIP: 0010:[prune_icache+103/208] Not tainted
Feb 14 09:08:04 multimedia kernel: EFLAGS: 00010246
Feb 14 09:08:04 multimedia kernel: eax: fd22c080 ebx: c3129648 ecx: 00000000 edx: cd0207cf
Feb 14 09:08:04 multimedia kernel: esi: c3129640 edi: c3129848 ebp: c1435f64 esp: c1435f4c
Feb 14 09:08:04 multimedia kernel: ds: 0018 es: 0018 ss: 0018
Feb 14 09:08:04 multimedia kernel: Process kswapd (pid: 5, stackpage=c1435000)
Feb 14 09:08:04 multimedia kernel: Stack: 0000000f 000001d0 00000020 00001757 c3129448 c78dfcc8 00000006 c0140a9b
Feb 14 09:08:04 multimedia kernel: 00001559 c012968d 00000006 000001d0 00000006 000001d0 00000006 000001d0
Feb 14 09:08:04 multimedia kernel: c021b5c8 00000000 c021b5c8 c01296dc 00000020 c021b5c8 00000001 c1434000
Feb 14 09:08:04 multimedia kernel: Call Trace: [shrink_icache_memory+27/64] [shrink_caches+109/128] [try_to_free_pages+60/96] [kswapd_balance_pgdat+67/144] [kswapd_balance+22/48]
Feb 14 09:08:04 multimedia kernel: Code: 89 50 04 89 02 89 73 f8 89 73 fc 8b 45 f8 89 58 04 89 03 8d
Using defaults from ksymoops -t elf32-i386 -a i386

Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
   0: 89 50 04 mov %edx,0x4(%eax)
Code; 00000002 Before first symbol
   3: 89 02 mov %eax,(%edx)
Code; 00000004 Before first symbol
   5: 89 73 f8 mov %esi,0xfffffff8(%ebx)
Code; 00000008 Before first symbol
   8: 89 73 fc mov %esi,0xfffffffc(%ebx)
Code; 0000000a Before first symbol
   b: 8b 45 f8 mov 0xfffffff8(%ebp),%eax
Code; 0000000e Before first symbol
   e: 89 58 04 mov %ebx,0x4(%eax)
Code; 00000010 Before first symbol
  11: 89 03 mov %eax,(%ebx)
Code; 00000012 Before first symbol
  13: 8d 00 lea (%eax),%eax

1 warning issued. Results may not be reliable.
***

It happened using 2.4.14, 2.4.27 and one or two 2.4 versions I don't remember now.

Does anybody know what this means?

If you need more diagnostics, tell me, and I'll try my best.

Thanks a lot,
Markus Schaber

-- 
"GPL software is not free - the cost is cooperation"

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