netdev - BUG: unable to handle kernel NULL pointer dereference at virtual address 000000b0

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Date:	Wed, 17 Oct 2007 08:40:48 +0200 (CEST)
From:	Krzysztof Oledzki <olel@....pl>
To:	netdev@...r.kernel.org
Subject: BUG: unable to handle kernel NULL pointer dereference at virtual
 address 000000b0

Hello,

Today I found in my logs:

BUG: unable to handle kernel NULL pointer dereference at virtual address 000000b0
  printing eip:
78395f65
*pde = 00000000
Oops: 0000 [#1]
PREEMPT SMP
CPU:    0
EIP:    0060:[<78395f65>]    Not tainted VLI
EFLAGS: 00210286   (2.6.22.9 #1)
EIP is at __ip_route_output_key+0x412/0x722
eax: 80000000   ebx: 00000000   ecx: 5dd2b1c3   edx: 00000000
esi: 00000000   edi: d44c7e30   ebp: ec8c4980   esp: d44c7ddc
ds: 007b   es: 007b   fs: 00d8  gs: 0033  ss: 0068
Process smtpd (pid: 12479, ti=d44c6000 task=9e759510 task.ti=d44c6000)
Stack: d44c7e7c d44c7e7c d44c7eb8 00000000 d44c7e7c 00000000 00000000 00000005
        00000000 ffffffff 5dd2b1c3 00000000 00000000 00000000 00000000 00000000
        00000000 00000000 00000000 00000000 00000000 00030000 00000000 d44c7e7c
Call Trace:
  [<78396280>] ip_route_output_flow+0xb/0x3e
  [<783b2b29>] ip4_datagram_connect+0x1c9/0x308
  [<783ba70a>] inet_dgram_connect+0x45/0x4e
  [<7837135e>] sys_connect+0x72/0x9c
  [<78371607>] sock_map_fd+0x41/0x4a
  [<7840d1b1>] _spin_lock+0x33/0x3e
  [<7840d623>] _spin_unlock+0x25/0x3b
  [<78371607>] sock_map_fd+0x41/0x4a
  [<78372792>] sys_socketcall+0x8f/0x242
  [<7813e99c>] trace_hardirqs_on+0x122/0x14c
  [<78103dc6>] sysenter_past_esp+0x8f/0x99
  [<78103d96>] sysenter_past_esp+0x5f/0x99
  =======================
Code: fa e0 00 00 00 75 07 c6 44 24 56 05 eb 14 81 fa f0 00 00 00 0f 84 e1 02 00 00 84 c0 0f 84 d9 02 00 00 8b 44 24 0c 0d 00 00 00 80 <f6> 86 b0 00 00 00 08 0f 44 44 24 0c 89 44 24 0c b8 01 00 00 00
EIP: [<78395f65>] __ip_route_output_key+0x412/0x722 SS:ESP 0068:d44c7ddc

Shortly before it there was:
Oct 17 07:17:55 cougar postfix/master[3400]: warning: process /usr/lib/postfix/smtpd pid 12479 killed by signal 11

Best regards,


 				Krzysztof Olędzki