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SubjectRe: OOPS: 2.6.9
Mark Hindley wrote:
> I got this oops this morning with 2.6.9
>
> I have rebooted without the nvidia module and will let you know if it
> hapens again.
>
> Let me know if you need more info
>
> Mark
>
> Nov 10 07:40:01 titan kernel: kernel BUG at mm/vmscan.c:370!
> Nov 10 07:40:01 titan kernel: invalid operand: 0000 [#1]
> Nov 10 07:40:01 titan kernel: PREEMPT
> Nov 10 07:40:01 titan kernel: Modules linked in: ide_cd cdrom nvidia ipv6 nfs nfsd exportfs lockd sunrpc snd_als100 snd_opl3_lib snd_hwdep snd_sb16_dsp snd_sb_common snd_pcm snd_timer snd_page_alloc snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore 3c59x dummy ipt_REJECT ipt_LOG ipt_limit ipt_MASQUERADE ipt_owner ipt_REDIRECT iptable_nat ipt_state iptable_filter ip_conntrack ip_tables hangcheck_timer 8250_pnp 8250 serial_core
> Nov 10 07:40:01 titan kernel: CPU: 0
> Nov 10 07:40:01 titan kernel: EIP: 0060:[shrink_list+155/1064] Tainted: P VLI
> Nov 10 07:40:01 titan kernel: EFLAGS: 00010202 (2.6.9)
> Nov 10 07:40:01 titan kernel: EIP is at shrink_list+0x9b/0x428
> Nov 10 07:40:01 titan kernel: eax: 20001045 ebx: c102ffe0 ecx: c102fff8 edx: c1060338
> Nov 10 07:40:01 titan kernel: esi: c1172000 edi: c10d7490 ebp: c10d7490 esp: c1173e44
> Nov 10 07:40:01 titan kernel: ds: 007b es: 007b ss: 0068
> Nov 10 07:40:01 titan kernel: Process kswapd0 (pid: 41, threadinfo=c1172000 task=c115ab10)
> Nov 10 07:40:01 titan kernel: Stack: c1173ee4 c1172000 c02b59ac 00000021 00000001 00000001 00000009 00000005
> Nov 10 07:40:01 titan kernel: c1059398 c10713d8 00000009 00000001 c104b320 c105e800 c1079160 c1062f20
> Nov 10 07:40:01 titan kernel: c10798e0 c104e9a0 c1045120 c1076d00 c10433e0 00000001 c105f1e0 c013c763
> Nov 10 07:40:01 titan kernel: Call Trace:
> Nov 10 07:40:01 titan kernel: [refill_inactive_zone+1267/1380] refill_inactive_zone+0x4f3/0x564
> Nov 10 07:40:01 titan kernel: [shrink_cache+463/824] shrink_cache+0x1cf/0x338
> Nov 10 07:40:01 titan kernel: [shrink_zone+147/172] shrink_zone+0x93/0xac
> Nov 10 07:40:01 titan kernel: [balance_pgdat+399/668] balance_pgdat+0x18f/0x29c
> Nov 10 07:40:01 titan kernel: [kswapd+216/224] kswapd+0xd8/0xe0
> Nov 10 07:40:01 titan kernel: [kswapd+0/224] kswapd+0x0/0xe0
> Nov 10 07:40:01 titan kernel: [autoremove_wake_function+0/64] autoremove_wake_function+0x0/0x40
> Nov 10 07:40:01 titan kernel: [autoremove_wake_function+0/64] autoremove_wake_function+0x0/0x40
> Nov 10 07:40:01 titan kernel: [kernel_thread_helper+5/12] kernel_thread_helper+0x5/0xc
> Nov 10 07:40:01 titan kernel: Code: 50 04 89 02 c7 01 00 01 10 00 c7 41 04 00 02 20 00 31 c0 0f ab 41 e8 19 c0 85 c0 0f 85 05 03 00 00 8b 41 e8 a9 40 00 00 00 74 08 <0f> 0b 72 01 84 ab 26 c0 8b 41 e8 a9 00 20 00 00 0f 85 de 02 00
>
>

a9 40 00 00 00 test $0x40,%eax
74 08 je 33 <_EIP+0x33>
0f 0b ud2a

So eax (20001045) is page->flags, which is
PG_locked | PG_referenced | PG_active | PG_private, I think.

You might have flipped a bit. Can you run memtest86 on the system overnight?
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