2.1.48 oops (ls /proc/scsi/ppa)

Myles Uyema (myles@puck.nether.net)
Tue, 5 Aug 1997 15:02:45 -1000

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After following the suggestion of loading the parport_pc module, I was able
to get my parallel port zip drive working and mounted. However, after about
three repetitions of unloading the ppa module, mounting the drive no longer
worked. I then tried to "ls /proc/scsi/ppa" which gave me a kernel oops and
segmentation fault.

Myles Uyema

--ew6BAiZeqk4r7MaW Content-Type: text/plain; charset=us-ascii Content-Description: kernel oops text Content-Disposition: attachment; filename="2148.oops"

[root@uyema /tmp]# ls /proc/scsi/ppa Unable to handle kernel paging request at virtual address c280bd20 current->tss.cr3 = 013ef000, %cr3 = 013ef000 *pde = 01ea4063 *pte = 00000000 Oops: 0000 CPU: 0 EIP: 0010:[<c013f50d>] EFLAGS: 00010246 eax: 00000000 ebx: c280bcfc ecx: bffff65f edx: bffff660 esi: 00000001 edi: c0f2de00 ebp: 0000011c esp: c13f1f78 ds: 0018 es: 0018 ss: 0018 Process ls (pid: 2386, process nr: 30, stackpage=c13f1000) Stack: c1cac2f4 c0f2de00 000003d8 bffff654 c012b1c4 c1cac2f4 c0f2de00 c13f1fb0 c012b000 c13f0000 bffff654 08052e08 bffffa54 c13f0000 bffff660 bffff654 000003cc ffffffea c0109466 00000003 bffff654 000003d8 bffff654 08052e08 Call Trace: [<c012b1c4>] [<c012b000>] [<c0109466>] Code: 8b 53 24 0f b7 12 52 56 6a 02 68 54 8b 19 c0 8b 4c 24 2c 51 Segmentation fault

--ew6BAiZeqk4r7MaW Content-Type: text/plain; charset=us-ascii Content-Description: ksymoops output Content-Disposition: attachment; filename=debug

Using `/usr/share/kernel/2148.map' to map addresses to symbols.

>>EIP: c013f50d <proc_readdir+7d/118> Trace: c012b1c4 <sys_getdents+90/d8> Trace: c012b000 <filldir> Trace: c0109466 <system_call+3a/40>

Code: c013f50d <proc_readdir+7d/118> Code: c013f50d <proc_readdir+7d/118> 8b 53 24 movl 0x24(%ebx),%edx Code: c013f510 <proc_readdir+80/118> 0f b7 12 movzwl (%edx),%edx Code: c013f513 <proc_readdir+83/118> 52 pushl %edx Code: c013f514 <proc_readdir+84/118> 56 pushl %esi Code: c013f515 <proc_readdir+85/118> 6a 02 pushl $0x2 Code: c013f51d <proc_readdir+8d/118> 68 54 8b 19 c0 pushl $0xc0198b54 Code: c013f522 <proc_readdir+92/118> 8b 4c 24 2c movl 0x2c(%esp,1),%ecx Code: c013f526 <proc_readdir+96/118> 51 pushl %ecx Code: c013f52d <proc_readdir+9d/118> --ew6BAiZeqk4r7MaW--