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Re: IDE DVD problem

To: Keith Owens <kaos@xxxxxxxxxxxxxxxxx>
Subject: Re: IDE DVD problem
From: Matthew Geier <matthew@xxxxxxxxxxxxxxxx>
Date: Sat, 17 Feb 2001 18:23:12 +1100
Cc: linux-xfs@xxxxxxxxxxx
Organization: Arts IT Unit, Sydney University
References: <9993.982366317@ocs3.ocs-net>
Sender: owner-linux-xfs@xxxxxxxxxxx
Keith Owens wrote:
> 
> On Sat, 17 Feb 2001 08:21:58 +1100,
> Matthew Geier <matthew@xxxxxxxxxxxxxxxx> wrote:
> > The linux video project's 'oms' dvd player can oops the IDE driver. The
> >oms process
> >becomes unkillable and the drive useless for any other process until the
> >machine is rebooted.

> After klogd has been told to keep its sticky fingers off the data,
> reproduce the problem and run ksymoops over the syslog output.  That
> will give a clean trace of the problem so we can see if it is XFS
> related or a general kernel bug.


Unable to handle kernel NULL pointer dereference at virtual address
00000034
cda5f1f1
*pde = 00000000
Oops: 0000
CPU:    0
EIP:    0010:[<cda5f1f1>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00210246
eax: c20ea000   ebx: c12742c0   ecx: 00001600   edx: 00000000
esi: 00000000   edi: c028c8d0   ebp: c12742c0   esp: c20edc24
ds: 0018   es: 0018   ss: 0018
Process oms_shell (pid: 1082, stackpage=c20ed000)
Stack: c12742c0 c665ee00 c028c8d0 cda5f265 c12742c0 c028c8d0 c665ee00
0012a3cc
       cda5fa35 c028c8d0 0012a3cc 0012a3cc c028c8d0 c12742c0 cda648e0
c665ee00
       c0178238 c028c8d0 c12742c0 0012a3cc c028c890 c028c8d0 c7ff6960
c028c8d0
Call Trace: [<cda5f265>] [<cda5fa35>] [<cda648e0>] [<c0178238>]
[<c0178571>] [<c01785ef>] [<c015d854>]
       [<c011949c>] [<c01448d1>] [<c01663d7>] [<c012b764>] [<c012b8c4>]
[<c01218d3>] [<c0121948>] [<c0121ac0>]
       [<c01129ff>] [<c01128a4>] [<c0122774>] [<c01300a8>] [<c016602c>]
[<c013032e>] [<c0108d87>]
Code: 8b 4e 34 39 c8 74 1a 29 c8 8d 90 ff 01 00 00 83 f8 ff 0f 4f

>>EIP; cda5f1f1 <[ide-cd]restore_request+d/44>   <=====
Trace; cda5f265 <[ide-cd]cdrom_start_read+3d/a4>
Trace; cda5fa35 <[ide-cd]ide_do_rw_cdrom+f9/158>
Trace; cda648e0 <[ide-cd]ide_cdrom_driver+0/3c>
Trace; c0178238 <start_request+1b4/22c>
Trace; c0178571 <ide_do_request+299/2e0>
Trace; c01785ef <do_ide_request+f/14>
Trace; c015d854 <generic_unplug_device+20/28>
Trace; c011949c <__run_task_queue+50/64>
Trace; c01448d1 <kiobuf_wait_for_io+61/a0>
Trace; c01663d7 <rw_raw_dev+353/44c>
Trace; c012b764 <__alloc_pages_limit+94/b8>
Trace; c012b8c4 <__alloc_pages+13c/2ec>
Trace; c01218d3 <do_anonymous_page+2f/74>
Trace; c0121948 <do_no_page+30/c0>
Trace; c0121ac0 <handle_mm_fault+e8/164>
Trace; c01129ff <do_page_fault+15b/41c>
Trace; c01128a4 <do_page_fault+0/41c>
Trace; c0122774 <do_munmap+58/280>
Trace; c01300a8 <default_llseek+0/8c>
Trace; c016602c <raw_read+1c/24>
Trace; c013032e <sys_read+8e/c4>
Trace; c0108d87 <system_call+33/38>

Code;  cda5f1f1 <[ide-cd]restore_request+d/44>
00000000 <_EIP>:
Code;  cda5f1f1 <[ide-cd]restore_request+d/44>   <=====
   0:   8b 4e 34                  mov    0x34(%esi),%ecx   <=====
Code;  cda5f1f4 <[ide-cd]restore_request+10/44>
   3:   39 c8                     cmp    %ecx,%eax
Code;  cda5f1f6 <[ide-cd]restore_request+12/44>
   5:   74 1a                     je     21 <_EIP+0x21> cda5f212
<[ide-cd]restore_request+2e/44>
Code;  cda5f1f8 <[ide-cd]restore_request+14/44>
   7:   29 c8                     sub    %ecx,%eax
Code;  cda5f1fa <[ide-cd]restore_request+16/44>
   9:   8d 90 ff 01 00 00         lea    0x1ff(%eax),%edx
Code;  cda5f200 <[ide-cd]restore_request+1c/44>
   f:   83 f8 ff                  cmp    $0xffffffff,%eax
Code;  cda5f203 <[ide-cd]restore_request+1f/44>
  12:   0f 4f 00                  cmovg  (%eax),%eax

Attachment: smime.p7s
Description: S/MIME Cryptographic Signature

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