2.4.5-ac9 console NULL pointer pointer dereference

From: Olaf Hering (olh@suse.de)
Date: Thu Jun 07 2001 - 08:40:54 EST

Hi,

this happend with 2.4.5-ac9 with serial console on i386.

Full boot log and config can be found here:
http://www.penguinppc.org/~olaf/bugs/245-ac9/

ksymoops 2.4.1 on i686 2.4.6-pre1. Options used
     -v /usr/src/OLAF/linux-2.4.5-ac9/vmlinux (specified)
     -K (specified)
     -L (specified)
     -O (specified)
     -m /usr/src/OLAF/linux-2.4.5-ac9/System.map (specified)

 WARNING: unexpectC, please mail
cpu: 0, clocks: 1001790, slice: 500895
ttyS1 at Unable to handle kernel NULL pointer dereference0x02f8 (irq = 3) at virtual address 00000004
Oops: 0000
CPU: 0
EIP: 0010:[<c01967c7>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010282
eax: 00000000 ebx: c1231fa4 ecx: 00000202 edx: 00000000
esi: c1231fa4 edi: c1230332 ebp: c1230000 esp: c1231f8c
ds: 0018 es: 0018 ss: 0018
Process keventd (pid: 2, stackpage=c1231000)
Stack: c0195a67 c1231fa4 c0119a5c 00000000 c1230650 c1231fe0 c025a5c4 c025a5c4
       c0120f97 c0252d20 00000700 c123ffc4 00000000 0008e000 c1230650 c1230640
       00000001 00000000 00000000 00010000 00000000 00000000 c1230000 c0252d2c
Call Trace: [<c0195a67>] [<c0119a5c>] [<c0120f97>] [<c01056cc>]
Code: 80 78 04 01 74 39 83 3d 00 43 2d c0 00 74 11 a1 88 52 2c c0

>>EIP; c01967c7 <poke_blanked_console+1b/5c> <=====
Trace; c0195a67 <console_callback+5f/b0>
Trace; c0119a5c <__run_task_queue+60/74>
Trace; c0120f97 <context_thread+127/1c4>
Trace; c01056cc <kernel_thread+28/38>
Code; c01967c7 <poke_blanked_console+1b/5c>
00000000 <_EIP>:
Code; c01967c7 <poke_blanked_console+1b/5c> <=====
   0: 80 78 04 01 cmpb $0x1,0x4(%eax) <=====
Code; c01967cb <poke_blanked_console+1f/5c>
   4: 74 39 je 3f <_EIP+0x3f> c0196806 <poke_blanked_console+5a/5c>
Code; c01967cd <poke_blanked_console+21/5c>
   6: 83 3d 00 43 2d c0 00 cmpl $0x0,0xc02d4300
Code; c01967d4 <poke_blanked_console+28/5c>
   d: 74 11 je 20 <_EIP+0x20> c01967e7 <poke_blanked_console+3b/5c>
Code; c01967d6 <poke_blanked_console+2a/5c>
   f: a1 88 52 2c c0 mov 0xc02c5288,%eax

Gruss Olaf 

-- 
 $ man clone

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This archive was generated by hypermail 2b29 : Thu Jun 07 2001 - 21:00:59 EST