the attached kernel oops happens repeatable
Hardware:
Dell Inspiron 2600 Laptop
USB-Serial Converter: UC-232A
Software:
minicom (V1.82.1)
kernel: 2.4.19-rc3
2.4.19-rc3-ac3
Description:
After modprobing the appropiate modules (pl2303, usbserial, usbcore,
uhci) and calling minicom on the device (/dev/usb/tts/0), everything
seems fine (can login, etc). But after exiting minicom, it ends with a
segmentation fault and the oops occurs. So the oops always occurs at
the moment I exit minicom. The oops also occurs when running a getty
on the device. After that, I cannot remove the modules anymore.
ksymoops < the_oops.txt:
--------------------------------------8<--------------------------------------
Unable to handle kernel NULL pointer dereference at virtual address 00000014
c8bb0345
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c8bb0345>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010006
eax: c48fc800 ebx: ffffff8d ecx: c4f1d800 edx: 00000000
esi: c545a420 edi: 00000000 ebp: 00000246 esp: c1dbbe70
ds: 0018 es: 0018 ss: 0018
Process minicom (pid: 571, stackpage=c1dbb000)
Stack: ffffff8d c545a420 00000000 00000282 c8bb1a78 c545a420 c545a428 c545a420
00000286 c5452060 00000001 00000000 c48fcc00 c23781d4 c8bb0fd0 c545a420
c4f1d87c c4f1d820 ffffffff c4f1d800 00000064 c23781d4 c8b9604e c545a420
Call Trace: [<c8bb1a78>] [<c8bb0fd0>] [<c8b9604e>] [<c8baaee9>] [<c8ba4484>]
[<c01b4d80>] [<c017a6d6>] [<c017a650>] [<c0142486>] [<c014388f>] [<c0141f38>]
[<c01b53ae>] [<c0131ff4>] [<c0131045>] [<c0131093>] [<c01086ab>]
Code: 8b 52 14 8b 42 e8 8b 7a ec 25 00 00 00 2f 0d 00 00 80 01 89
>>EIP; c8bb0344 <[uhci]uhci_reset_interrupt+24/a0> <=====
Trace; c8bb1a78 <[uhci]uhci_call_completion+170/1b0>
Trace; c8bb0fd0 <[uhci]uhci_unlink_urb+168/174>
Trace; c8b9604e <[usbcore]usb_unlink_urb+26/30>
Trace; c8baaee8 <[pl2303]pl2303_close+14c/194>
Trace; c8ba4484 <[usbserial]serial_close+a0/b0>
Trace; c01b4d80 <release_dev+240/4fc>
Trace; c017a6d6 <reiserfs_delete_inode+86/98>
Trace; c017a650 <reiserfs_delete_inode+0/98>
Trace; c0142486 <destroy_inode+26/2c>
Trace; c014388e <iput+1ce/1d8>
Trace; c0141f38 <d_delete+4c/6c>
Trace; c01b53ae <tty_release+a/10>
Trace; c0131ff4 <fput+4c/d0>
Trace; c0131044 <filp_close+54/60>
Trace; c0131092 <sys_close+42/54>
Trace; c01086aa <system_call+32/38>
Code; c8bb0344 <[uhci]uhci_reset_interrupt+24/a0>
00000000 <_EIP>:
Code; c8bb0344 <[uhci]uhci_reset_interrupt+24/a0> <=====
0: 8b 52 14 mov 0x14(%edx),%edx <=====
Code; c8bb0346 <[uhci]uhci_reset_interrupt+26/a0>
3: 8b 42 e8 mov 0xffffffe8(%edx),%eax
Code; c8bb034a <[uhci]uhci_reset_interrupt+2a/a0>
6: 8b 7a ec mov 0xffffffec(%edx),%edi
Code; c8bb034c <[uhci]uhci_reset_interrupt+2c/a0>
9: 25 00 00 00 2f and $0x2f000000,%eax
Code; c8bb0352 <[uhci]uhci_reset_interrupt+32/a0>
e: 0d 00 00 80 01 or $0x1800000,%eax
Code; c8bb0356 <[uhci]uhci_reset_interrupt+36/a0>
13: 89 00 mov %eax,(%eax)
--------------------------------------8<--------------------------------------
Greetings,
Peter
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