Oops when accessing /dev/fd0 (kernel 2.4.7 and devfsd 1.3.11)

Taylor Carpenter (taylorcc@codecafe.com)
Thu, 16 Aug 2001 22:28:11 -0500


Any access to /dev/fd0 gives a kernel oops. Have not accessed the floppy in a
while, but noticed the complaint when booting and after looking further.

kernel: 2.4.7 (using devfs)
devfsd: 1.3.11

[12]# insmod floppy
Using /lib/modules/2.4.7athlon/kernel/drivers/block/floppy.o
inserting floppy driver for 2.4.7athlon
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077

[13]# ls -l /dev/fd0
Unable to handle kernel NULL pointer dereference at virtual address 00000000
printing eip:
c013c4c4
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c013c4c4>]
EFLAGS: 00010246
eax: 00000000 ebx: 00001000 ecx: ffffffff edx: 00000000
esi: 00000000 edi: 00000000 ebp: dd439fa4 esp: dd439f5c
ds: 0018 es: 0018 ss: 0018
Process ls (pid: 367, stackpage=dd439000)
Stack: df693ec0 00000000 00001000 c015469b df693ec0 bfffec54 00001000 00000000
df092840 c01376d2 df693ec0 bfffec54 00001000 df092840 dd438000 bffffead
00000003 bffffc7c df693ec0 c188e4c0 00003000 dd438000 08057000 00000008
Call Trace: [<c015469b>] [<c01376d2>] [<c0106c2b>]

Code: f2 ae f7 d1 49 89 ce 39 de 0f 47 f3 56 52 8b 44 24 1c 50 e8
Segmentation fault

Please CC replies to taylorcc@codecafe.com as I am not on the list. Thanks.
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