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SubjectRe: PROBLEM: 2.6.0-test10 BUG/panic in mpage_end_io_read
Eric Jensen <ej@xmission.com> wrote:
>
> kernel BUG at mm/filemap.c:332!
> invalid operand: 0000 [#1]
> CPU: 0
> EIP: 0060:[<c0130f4a>] Not tainted
> EFLAGS: 00010246
> EIP is at unlock_page+0x1a/0x40
> eax: 00000000 ebx: c1083b08 ecx: 00000017 edx: c1500400
> esi: c1500cf4 edi: 00000001 ebp: 00000003 esp: dfcc1f0c
> ds: 007b es: 007b ss: 0068
> Process md0_raid5 (pid: 17, threadinfo=dfcc0000 task=dfcdd2d0)
> Stack: dffd2e34 cbe5f540 c016201e cbe5f540 dfbcd298 ffffffff dfbcd298 c02a2f75
> cbe5f540 00000000 00000000 dfbcd298 dfd20b00 dff7ae00 dfd20b08 c17f872c
> c17f8764 00000000 dff7ae74 00000000 00000002 00000001 00000004 ffffffff
> Call Trace:
> [<c016201e>] mpage_end_io_read+0x5e/0x80
> [<c02a2f75>] handle_stripe+0x9e5/0xb30
> [<c02a341c>] raid5d+0xec/0x110
> [<c02a9af9>] md_thread+0xf9/0x140
> [<c02a9a00>] md_thread+0x0/0x140

Could be that the MD layer is calling ->bi_end_io() more than once
for a particular BIO.

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