Re: 2.6.7-mm2 oopses and badness

[Martin J. Bligh]

> During bootup, shortly after CPU init (mm1 was fine):
> 
> Only candidate I can see is 
> +reduce-tlb-flushing-during-process-migration-2.patch
> Will try backing that out unless you want something else ...

Looks like that's ia64 only ;-(

But the oops seems like we're just calling flush_tlb_mm with a NULL mm.
 
> Jun 24 06:54:24 larry kernel: c010e98b
> Jun 24 06:54:24 larry kernel: SMP 
> Jun 24 06:54:24 larry kernel: c010e98b
> Jun 24 06:54:24 larry kernel: Modules linked in:
> Jun 24 06:54:24 larry kernel: CPU:    12
> Jun 24 06:54:24 larry kernel: EIP:    0060:[flush_tlb_mm+7/120]    Not tainted VLI
> Jun 24 06:54:24 larry kernel: EFLAGS: 00010292   (2.6.7-mm2) 
> Jun 24 06:54:24 larry kernel: EIP is at flush_tlb_mm+0x7/0x78
> Jun 24 06:54:24 larry kernel: eax: 00000000   ebx: f124bfa8   ecx: 00000000   ed
> x: f124bf94
> Jun 24 06:54:24 larry kernel: esi: c30d3be0   edi: 00000000   ebp: f124bf9c   esp: f124bf4c
> Jun 24 06:54:24 larry kernel: ds: 007b   es: 007b   ss: 0068
> Jun 24 06:54:24 larry kernel: Process kswapd3 (pid: 72, threadinfo=f124a000 task=f1247390)
> Jun 24 06:54:24 larry kernel: Stack: 00200200 c01159e1 00000000 f1247390 f124bfdc f124bff0 f124bfa8 c02bcc40 
> Jun 24 06:54:24 larry kernel:        00000000 00000282 f124bf74 f124bf74 00000000 f1247390 0000000c f124a000 
> Jun 24 06:54:24 larry kernel:        00000000 00000001 f124bf94 f124bf94 f1a00000 c0138bca f1247390 0000f000 
> Jun 24 06:54:24 larry kernel: Call Trace:
> Jun 24 06:54:24 larry kernel:  [set_cpus_allowed+225/252] set_cpus_allowed+0xe1/0xfc
> Jun 24 06:54:24 larry kernel:  [kswapd+142/224] kswapd+0x8e/0xe0
> Jun 24 06:54:24 larry kernel:  [kswapd+0/224] kswapd+0x0/0xe0
> Jun 24 06:54:24 larry kernel:  [autoremove_wake_function+0/64] autoremove_wake_function+0x0/0x40
> Jun 24 06:54:24 larry kernel:  [autoremove_wake_function+0/64] autoremove_wake_function+0x0/0x40
> Jun 24 06:54:24 larry kernel:  [kernel_thread_helper+5/12] kernel_thread_helper+0x5/0xc
> Jun 24 06:54:24 larry kernel: Code: 0f 20 d8 0f 22 d8 8b 04 24 85 c0 74 13 6a ff 51 50 e8 0a ff ff ff 83 c4 0c 8d b4 26 00 00 00 00 59 c3 89 f6 83 ec
>  04 8b 4c 24 08 <8b> 81 24 01 00 00 ba 00 e0 ff ff 21 e2 89 04 24 8b 42 10 f0 0f 

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