crashes if accassing FAT MO

From: Tino Keitel (tino.keitel@darmstadt.gmd.de)
Date: Thu Mar 08 2001 - 11:42:21 EST


Hi folks,

I use kernel 2.4.2. If I try to access files on a 640 MB MO (2048 bytes
hardware sector size) and the MO is using FAT fs I only got messages
like these:

Unable to handle kernel NULL pointer dereference at virtual address
00000000
 printing eip:
00000000
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<00000000>]
EFLAGS: 00010286
eax: 00000000 ebx: c798d740 ecx: 00000003 edx: c798d740
esi: ffffffea edi: 00000000 ebp: 00004000 esp: c576bf88
ds: 0018 es: 0018 ss: 0018
Process cat (pid: 458, stackpage=c576b000)
Stack: cc993428 c798d740 0804b220 00004000 c798d760 c012d465 c798d740
0804b220
       00004000 c798d760 c576a000 00004000 0804b220 bffff994 c0108d43
00000003
       0804b220 00004000 00004000 0804b220 bffff994 00000003 0000002b
0000002b
Call Trace: [<cc993428>] [<c012d465>] [<c0108d43>]

Code: Bad EIP value.
Segmentation fault

There are no problems if I use ext2fs, exept that I can't use them for
data exchange with Windows. It also works with 2.2 kernels but the MO
drive will be much slower.

Tino
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This archive was generated by hypermail 2b29 : Thu Mar 15 2001 - 21:00:08 EST