2.4.18 kswapd problem

[Michał Pasternak <michal@pasternak.w.lub.pl>]

Hi,

after 6 - 8 days of uptime kswapd starts to behave strange:
==================================================================
pasternak:/home/doc# ps auxwww|grep kswapd
root         4  0.0  0.0     0    0 ?        Z    Jun04   0:59 [kswapd
<defunct>]
==================================================================



In logs:
==================================================================
Jun 12 20:30:11 pasternak kernel: invalid operand: 0000
Jun 12 20:30:11 pasternak kernel: CPU:    0
Jun 12 20:30:11 pasternak kernel: EIP:    0010:[__free_pages_ok+40/512]
Taint
ed: PF
Jun 12 20:30:11 pasternak kernel: EFLAGS: 00010286
Jun 12 20:30:11 pasternak kernel: eax: c119065c   ebx: c1320480   ecx:
c1320480 
  edx: c01fcfa0
  Jun 12 20:30:11 pasternak kernel: esi: c1320480   edi: 00000000   ebp:
000001ff 
  esp: c141ff28
  Jun 12 20:30:11 pasternak kernel: ds: 0018   es: 0018   ss: 0018
  Jun 12 20:30:11 pasternak kernel: Process kswapd (pid: 4,
stackpage=c141f000)
Jun 12 20:30:11 pasternak kernel: Stack: c7f7a1c0 c1320480 0000000e 000001ff
c13
20480 000001d0 c7f7a1c0 c1320480 
Jun 12 20:30:11 pasternak kernel:        c012bb82 c012c97b c012bbbb 00000020
000
001d0 00000020 00000006 00000006 
Jun 12 20:30:11 pasternak kernel:        c141e000 00001999 000001d0 c01fd0c8
c01
2bdc6 00000006 00000005 00000006 
Jun 12 20:30:11 pasternak kernel: Call Trace: [shrink_cache+466/752]
[__free_pag
es+27/32] [shrink_cache+523/752] [shrink_caches+86/144]
[try_to_free_pages+60/96
] 
Jun 12 20:30:11 pasternak kernel:    [kswapd_balance_pgdat+67/144]
[kswapd_balan
ce+22/48] [kswapd+157/192] [kernel_thread+40/64] 
Jun 12 20:30:11 pasternak kernel: 
Jun 12 20:30:11 pasternak kernel: Code: 0f 0b 89 d8 2b 05 ec 6c 25 c0 c1 f8
06 3
b 05 e0 6c 25 c0 72 
==================================================================



Then other apps go crazy:
==================================================================
Jun 12 20:30:17 pasternak kernel:  invalid operand:
0000
Jun 12 20:30:17 pasternak kernel: CPU:    0
Jun 12 20:30:17 pasternak kernel: EIP:    0010:[__free_pages_ok+40/512]
Taint
ed: PF
Jun 12 20:30:17 pasternak kernel: EFLAGS: 00010286
Jun 12 20:30:17 pasternak kernel: eax: c139ce9c   ebx: c11a8180   ecx:
c11a8180 
  edx: c01fcfa0
  Jun 12 20:30:17 pasternak kernel: esi: c11a8180   edi: 00000000   ebp:
00000200 
  esp: cb8ffe24
  Jun 12 20:30:17 pasternak kernel: ds: 0018   es: 0018   ss: 0018
  Jun 12 20:30:17 pasternak kernel: Process mkisofs (pid: 7625,
stackpage=cb8ff000
)
Jun 12 20:30:17 pasternak kernel: Stack: c7f7a3c0 c11a8180 00000020 00000200
c11
a8180 000001d2 c7f7a3c0 c11a8180 
Jun 12 20:30:17 pasternak kernel:        c012bb82 c012c97b c012bbbb 00000020
000
001d2 00000020 00000006 00000006 
Jun 12 20:30:17 pasternak kernel:        cb8fe000 00001a01 000001d2 c01fd0c8
c01
2bdc6 00000006 00000005 00000006 
Jun 12 20:30:17 pasternak kernel: Call Trace: [shrink_cache+466/752]
[__free_pag
es+27/32] [shrink_cache+523/752] [shrink_caches+86/144]
[try_to_free_pages+60/96
] 
Jun 12 20:30:17 pasternak kernel:    [balance_classzone+78/368]
[__alloc_pages+2
68/368]
[unix:__insmod_unix_O/lib/modules/2.4.18-k7/kernel/net/unix/unix.+-10348
64/96] [_alloc_pages+22/32] [page_cache_read+106/192]
[generic_file_readahead+26
1/320] 
Jun 12 20:30:17 pasternak kernel:    [do_generic_file_read+418/1024]
[generic_fi
le_read+133/320] [file_read_actor+0/96] [sys_read+150/240]
[system_call+51/56] 
Jun 12 20:30:17 pasternak kernel: 
Jun 12 20:30:17 pasternak kernel: Code: 0f 0b 89 d8 2b 05 ec 6c 25 c0 c1 f8
06 3
b 05 e0 6c 25 c0 72 
==================================================================

mkisofs crashed like that only one time. Launched 5 secs. after that worked
nicely. 

Also, pppd acts strange. Also, timidity. Also some simple svgalib apps from
/usr/games.

What may be the cause of such behavior?
How to get rid of this?

I suppose my RAM is functional.


-- 
/* Michał Pasternak, http://pasternak.w.lub.pl, +48606570000 */
/* www.anti-dmca.org, www.debian.org/devel/debian-med        */
/* On the first day God typed "M-x create-world".            */


-- 
To UNSUBSCRIBE, email to debian-testing-request@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org