[7213] in linux-scsi channel archive
Re: machine lockups with DTC3181e card (with kernel oops)
daemon@ATHENA.MIT.EDU (Neil Muller)
Mon Sep 13 07:41:12 1999
Date: Sun, 12 Sep 1999 23:32:21 +0200
From: Neil Muller <mullern@mweb.co.za>
To: linux-scsi@vger.rutgers.edu
Reply-To: Neil Muller <mullern@mweb.co.za>
In discussion with Lashi (lashi@mail.alphalink.com.au) after my earlier posting,
I've been shown another way I can lock up my system. Occasionally removing
the g_NCR5380 module causes a kernel panic. Its not completely consistent in
my case and seems most likely to occur when scanimage has been stopped mid-scan.
Included is the results of running my kerenl oops through ksymoops. Lashi
reports a similiar problem.
> Output of ksymoops
>
> Unable to handle kernel paging request at virtual address c886e714
> current->tss.cr3 = 00101000, %cr3 = 00101000
> *pde = 07d11063
> EFLAGS: 0010096
> eax: c09c32fc ebx: c886e714 ecx: c886e714 edx: 0000008e
> esi: c09c32fc edi: 00000001 ebp: c01d5f48 esp: c01d5f44
> ds: 0018 es: 0018 ss: 0018
> Call Trace: [<c01177c5>] [<c010a24d>] [<c0109f20>] [<c0107885>] [<c0106000>] [<c01078a8>] [<c0109084>]
> [<c0106000>] [<c010607b>] [<c0106000>] [<c010607b>] [<c0106000>] [<c0100176>]
> Code: 8b 1b 8b 41 08 89 c2 2b 15 04 38 1c c0 81 fa ff 00 00 00 77
>
> Trace: c01177c5 <do_bottom_half+49/64>
> Trace: c010a24d <do_IRQ+39/40>
> Trace: c0109f20 <common_interrupt+18/20>
> Trace: c0107885 <cpu_idle+5d/6c>
> Trace: c0106000 <get_options+0/74>
> Trace: c01078a8 <sys_idle+14/24>
> Trace: c0109084 <system_call+34/38>
> Trace: c0106000 <get_options+0/74>
> Code: 00000000 Before first symbol 00000000 <_IP>: <===
> Code: 00000000 Before first symbol 0: 8b 1b movl (%ebx),%ebx <===
> Code: 00000002 Before first symbol 2: 8b 41 08 movl 0x8(%ecx),%eax
> Code: 00000005 Before first symbol 5: 89 c2 movl %eax,%edx
> Code: 00000007 Before first symbol 7: 2b 15 04 38 1c subl 0xc01c3804,%edx
> Code: 0000000c Before first symbol c: c0
> Code: 0000000d Before first symbol d: 81 fa ff 00 00 cmpl $0xff,%edx
> Code: 00000012 Before first symbol 12: 00
> Code: 00000013 Before first symbol 13: 77 00 ja
> 00000015 Before first symbol
>
> Aiee, killing interrupt handler
> kernel panic: Attempting to kill the idle task!
> In swapper task - not syncing
I've taken a look at the g_NCR5380 driver without any blinding flashes of
enlightenment. Does anyone have any pointers to specs on this card? I suspect
I might have a better chance of understanding the code if I actaully knew what
it was trying to achieve in the first place.
--
Neil Muller
mullern@mweb.co.za
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