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Subject[OOPS] [2.4.16] comparing CD-RW with CD
Date

Hi all,

I can reliably oops this machine by doing:
cmp /dev/scd0 /dev/hdb

The CD-RW is /dev/scd0 and is using ide-scsi.

This machine is a AMD K6-2 500, ALI chipset, 160MB RAM.
/dev/hda is an old Seagate 631MB drive
/dev/hdb is a DVD-ROM drive.
/dev/scd0 is /dev/hdc using ide-scsi, - a CD-RW drive
/dev/hdd is a really old IBM 343MB drive.

I had to transcribe the oops by hand as the machine locks. More information
available on request.

Regards,
Charlie

--------------------- Decoded Oops below
ksymoops 2.4.3 on i586 2.4.16. Options used
-V (default)
-k /var/log/ksymoops/20011129115325.ksyms (specified)
-l /var/log/ksymoops/20011129115325.modules (specified)
-o /lib/modules/2.4.16/ (default)
-m /usr/local/src/linux/System.map (specified)

ca8394d8
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[<ca8394d8>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010202
eax: 00000051 ebx: c30af000 ecx: c02404d0 edx: 00000177
esi: c64400c0 edi: 01000000 ebp: c0240410 esp: c139bd6c
ds: 0018 es: 0018 ss: 0018
Process syslogd (pid: 156, stackpage=c139b000)
Stack: c0240410 c129f260 00000296 c02403d0 00000002 c0240451 c016f847
c0240410
c12849a0 04000010 0000000f c139bde8 ca839468 c0107d6c 0000000f
c129f260
c139bde8 000001e0 c821bae0 0000000f c139bde0 c0107ed2 0000000f
c139bde8
Call Trace: [<c016f847>] [<ca839468>] [<c0108d6c>] [<c0109c48>]
[<c0182b7e>] [<c0182bf7>] [<c0182d54>] [<c0184670>] [<c01b0f68>]
[<c0180131>]
[<c0180eb7>] [<c0111bf1>] [<c0128483>] [<c012849e>] [<c0138cab>]
[<c0138fa8>]
[<c0138fe1>] [<c0180f29>] [<c01815b5>] [<c0106b23>]
Code: ff 47 18 8b 85 c8 00 00 00 ff 70 04 6a 01 e8 e5 fd ff ff 31

>>EIP; ca8394d8 <[ide-scsi]idescsi_pc_intr+70/22c> <=====
Trace; c016f846 <ide_intr+f6/14c>
Trace; ca839468 <[ide-scsi]idescsi_pc_intr+0/22c>
Trace; c0108d6c <handle_vm86_fault+290/75c>
Trace; c0109c48 <call_do_IRQ+6/e>
Trace; c0182b7e <skb_release_data+2/70>
Trace; c0182bf6 <kfree_skbmem+a/58>
Trace; c0182d54 <__kfree_skb+110/118>
Trace; c0184670 <skb_free_datagram+1c/20>
Trace; c01b0f68 <unix_dgram_recvmsg+f8/108>
Trace; c0180130 <sock_recvmsg+3c/bc>
Trace; c0180eb6 <sys_recvfrom+a2/fc>
Trace; c0111bf0 <schedule+2ac/2d4>
Trace; c0128482 <__free_pages+1a/1c>
Trace; c012849e <free_pages+1a/1c>
Trace; c0138caa <poll_freewait+3a/44>
Trace; c0138fa8 <do_select+1c4/1dc>

Trace; c0138fe0 <select_bits_free+8/10>
Trace; c0180f28 <sys_recv+18/20>
Trace; c01815b4 <sys_socketcall+144/1d4>
Trace; c0106b22 <system_call+32/40>
Code; ca8394d8 <[ide-scsi]idescsi_pc_intr+70/22c>
00000000 <_EIP>:
Code; ca8394d8 <[ide-scsi]idescsi_pc_intr+70/22c> <=====
0: ff 47 18 incl 0x18(%edi) <=====
Code; ca8394da <[ide-scsi]idescsi_pc_intr+72/22c>
3: 8b 85 c8 00 00 00 mov 0xc8(%ebp),%eax
Code; ca8394e0 <[ide-scsi]idescsi_pc_intr+78/22c>
9: ff 70 04 pushl 0x4(%eax)
Code; ca8394e4 <[ide-scsi]idescsi_pc_intr+7c/22c>
c: 6a 01 push $0x1
Code; ca8394e6 <[ide-scsi]idescsi_pc_intr+7e/22c>
e: e8 e5 fd ff ff call fffffdf8 <_EIP+0xfffffdf8>
ca8392d0 <[ide-scsi]idescsi_end_request+b0/248>
Code; ca8394ea <[ide-scsi]idescsi_pc_intr+82/22c>
13: 31 00 xor %eax,(%eax)

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