Re: kernel OOPS: 2.4.18, nscd, nfsd

From: Andrea Arcangeli (andrea@suse.de)
Date: Fri Jul 05 2002 - 05:05:22 EST


On Wed, Jun 19, 2002 at 11:25:08AM +0200, Richard Ems wrote:
> Jun 18 22:35:59 bingo kernel: Unable to handle kernel paging request at virtual address 92766008
> Jun 18 22:35:59 bingo kernel: printing eip:
> Jun 18 22:35:59 bingo kernel: c0217944
> Jun 18 22:35:59 bingo kernel: *pde = 00000000
> Jun 18 22:35:59 bingo kernel: Oops: 0000
> Jun 18 22:35:59 bingo kernel: CPU: 0
> Jun 18 22:35:59 bingo kernel: EIP: 0010:[sock_poll+4/32] Not tainted
> Jun 18 22:35:59 bingo kernel: EFLAGS: 00210282
> Jun 18 22:35:59 bingo kernel: eax: c0217940 ebx: 00000145 ecx: 00000000 edx: 92766000
> Jun 18 22:35:59 bingo kernel: esi: dcd88000 edi: c2bf76e0 ebp: 00000000 esp: c3419f28
> Jun 18 22:35:59 bingo kernel: ds: 0018 es: 0018 ss: 0018
> Jun 18 22:35:59 bingo kernel: Process nscd (pid: 863, stackpage=c3419000)
> Jun 18 22:35:59 bingo kernel: Stack: c0149610 92766000 00000000 00000000 000005dd 00000000 00000000 c01496fc
> Jun 18 22:35:59 bingo kernel: 00000001 dcd88000 c3419f60 c3419f64 c3418000 c3418000 00000000 00000000
> Jun 18 22:35:59 bingo kernel: 00000001 bf7ffa04 00000000 00000001 c0149860 00000001 00000000 00000001
> Jun 18 22:35:59 bingo kernel: Call Trace: [do_pollfd+128/144] [do_poll+220/240] [sys_poll+336/704] [sys_time+17/80] [system_call+51/64]
> Jun 18 22:35:59 bingo kernel:
> Jun 18 22:35:59 bingo kernel: Code: 8b 42 08 8b 40 08 05 14 01 00 00 8b 48 08 ff 74 24 08 50 52
> Jun 18 22:35:59 bingo kernel: klogd 1.4.1, ---------- state change ----------
> Jun 18 22:35:59 bingo kernel: Inspecting /boot/System.map-2.4.18-4GB
> Jun 18 22:35:59 bingo kernel: Loaded 13574 symbols from /boot/System.map-2.4.18-4GB.
> Jun 18 22:35:59 bingo kernel: Symbols match kernel version 2.4.18.
> Jun 18 22:35:59 bingo kernel: Loaded 168 symbols from 13 modules.
> Jun 18 22:40:00 bingo /USR/SBIN/CRON[24006]: (root) CMD ( /usr/lib/sa/sa1 )
> Jun 18 22:50:00 bingo /USR/SBIN/CRON[24053]: (root) CMD ( /usr/lib/sa/sa1 )
> Jun 18 22:50:00 bingo kernel: <1>Unable to handle kernel paging request at virtual address 42627044
> Jun 18 22:50:00 bingo kernel: printing eip:
> Jun 18 22:50:00 bingo kernel: 42627044
> Jun 18 22:50:00 bingo kernel: *pde = 00000000
> Jun 18 22:50:00 bingo kernel: Oops: 0000
> Jun 18 22:50:00 bingo kernel: CPU: 0
> Jun 18 22:50:00 bingo kernel: EIP: 0010:[zisofs_cleanup+1113747380/-1072693392] Not tainted

Not that we can trust a second oops and I guess also the first oops
isn't near the bug, but are you using the zisofs actively or the above
is just a random EIP?

Also note if you exported the iso via nfs in the past without a reboot
and fsck -f in between, you could have mem/fs corruption that trigger
days after you stopped exporting iso via nfsd.

If you can reproduce that would be helpful.

thanks,

Andrea
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