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SubjectRe: ide-scsi bug hard locks machine
Some more info for those interested, it seems to have started in 2.5.53
with the implementation of the mid level api.

heres a trace from 2.5.53 maybe this will make it easier to find.

Unable to handle kernel NULL pointer dereference at virtual address 00000030
printing eip:
c0252ba3
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0060:[<c0252ba3>] Not tainted
EFLAGS: 00010086
EIP is at idescsi_abort+0x73/0x110
eax: 00000002 ebx: 00000086 ecx: d7cc5200 edx: 00000000
esi: d7c3e000 edi: d7c3e000 ebp: 00000007 esp: d7c3ff60
ds: 0068 es: 0068 ss: 0068
Process scsi_eh_0 (pid: 9, threadinfo=d7c3e000 task=d7d1a680)
Stack: c030dee0 00000002 d7c3e000 d7c8c980 c040e1ec d7c3e000 00000202 d7c3e000
00000000 c024c7a2 d7cc5200 d7cc5200 d7cdf180 d7c3e000 c024c8c8 d7cc5200
d7cdf180 d7cdf180 d7c3ffd4 c024d165 d7cc5200 d7cdf180 c0109d97 d7cc5200
Call Trace:
[<c024c7a2>] scsi_try_to_abort_cmd+0x62/0x80
[<c024c8c8>] scsi_eh_abort_cmd+0x38/0x70
[<c024d165>] scsi_unjam_host+0xa5/0xf0
[<c0109d97>] __down_failed_interruptible+0x7/0xc
[<c024d289>] scsi_error_handler+0xd9/0x110
[<c024d1b0>] scsi_error_handler+0x0/0x110
[<c0108bfd>] kernel_thread_helper+0x5/0x18

Code: 39 42 30 74 67 8b 44 24 10 83 c0 10 89 04 24 e8 69 55 fc ff
<6>note: scsi_eh_0[9] exited with preempt_count 2


On Mon, Jan 13, 2003 at 03:02:53PM +0000, Alan Cox wrote:
> Someone broke ide-scsi in 2.5. I've not had time to investigate why yet. If you
> need ide-scsi use 2.4.
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