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Old 07-07-2003, 03:24 PM   #1
EvolveNet
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What does this kernel message mean?


Hi,

Found this in /var/log/messages and can't decipher it. Looks like my box had a hard time writing to disk? Thanks to anyone who speaks kernel and can tell waht happened.

Jul 7 07:37:16 e kernel: Unable to handle kernel NULL pointer dereference at virtual address 0000002f
Jul 7 07:37:16 e kernel: printing eip:
Jul 7 07:37:16 e kernel: c0175913
Jul 7 07:37:16 e kernel: *pde = 00000000
Jul 7 07:37:16 e kernel: Oops: 0000
Jul 7 07:37:16 e kernel: autofs eepro100 ipt_REJECT iptable_filter ip_tables mousedev keybdev hid input
Jul 7 07:37:16 e kernel: CPU: 0
Jul 7 07:37:16 e kernel: EIP: 0010:[<c0175913>] Not tainted
Jul 7 07:37:16 e kernel: EFLAGS: 00010206
Jul 7 07:37:16 e kernel:
Jul 7 07:37:16 e kernel: EIP is at try_atomic_semop [kernel] 0x83 (2.4.18-14)
Jul 7 07:37:16 e kernel: eax: 00001000 ebx: ffffffff ecx: e8e70040 edx: efbdf3b8
Jul 7 07:37:16 e kernel: esi: dfa2be00 edi: 0000002f ebp: 00000000 esp: e57e1d3c
Jul 7 07:37:16 e kernel: ds: 0018 es: 0018 ss: 0018
Jul 7 07:37:16 e kernel: Process httpd (pid: 15695, stackpage=e57e1000)
Jul 7 07:37:16 e kernel: Stack: 00001000 c0205658 00000002 00000003 dfa2be06 dfa2bdd0 00000001 efbdf380
Jul 7 07:37:16 e kernel: 000a8002 c0175a61 efbdf380 dfa2be00 00000001 e8e70040 00003aa3 00000001
Jul 7 07:37:16 e kernel: 00000001 e57e1e00 e57e0000 c0176a3d efbdf380 e57e1e00 00000001 e8e70d40
Jul 7 07:37:16 e kernel: Call Trace: [<c0205658>] ip_queue_xmit [kernel] 0x238 (0xe57e1d40))
Jul 7 07:37:16 e kernel: [<c0175a61>] update_queue [kernel] 0x51 (0xe57e1d60))
Jul 7 07:37:16 e kernel: [<c0176a3d>] sys_semop [kernel] 0x3ed (0xe57e1d88))
Jul 7 07:37:16 e kernel: [<c02053d4>] ip_output [kernel] 0x54 (0xe57e1dfc))
Jul 7 07:37:16 e kernel: [<f88898e0>] packet_filter [iptable_filter] 0x0 (0xe57e1e10))
Jul 7 07:37:16 e kernel: [<c0206944>] ip_queue_xmit2 [kernel] 0xc4 (0xe57e1e1c))
Jul 7 07:37:16 e kernel: [<c0206880>] ip_queue_xmit2 [kernel] 0x0 (0xe57e1e2c))
Jul 7 07:37:16 e kernel: [<c01f3fb3>] nf_hook_slow [kernel] 0xb3 (0xe57e1e40))
Jul 7 07:37:16 e kernel: [<c01e8de7>] __kfree_skb [kernel] 0xf7 (0xe57e1e80))
Jul 7 07:37:16 e kernel: [<c020bc95>] tcp_recvmsg [kernel] 0x395 (0xe57e1e94))
Jul 7 07:37:16 e kernel: [<c013722d>] __alloc_pages [kernel] 0x8d (0xe57e1eac))
Jul 7 07:37:16 e kernel: [<c021b76b>] tcp_v4_destroy_sock [kernel] 0x1b (0xe57e1edc))
Jul 7 07:37:16 e kernel: [<c020c408>] tcp_destroy_sock [kernel] 0xc8 (0xe57e1ef0))
Jul 7 07:37:16 e kernel: [<c020c766>] tcp_close [kernel] 0x246 (0xe57e1f04))
Jul 7 07:37:16 e kernel: [<c01e8de7>] __kfree_skb [kernel] 0xf7 (0xe57e1f5c))
Jul 7 07:37:16 e kernel: [<c0148a3c>] pipe_read [kernel] 0x4c (0xe57e1f6c))
Jul 7 07:37:16 e kernel: [<c01400af>] fput [kernel] 0xcf (0xe57e1f7c))
Jul 7 07:37:16 e kernel: [<c010e65d>] sys_ipc [kernel] 0x4d (0xe57e1f90))
Jul 7 07:37:16 e kernel: [<c013e78e>] sys_close [kernel] 0x4e (0xe57e1fb0))
Jul 7 07:37:16 e kernel: [<c01090ff>] system_call [kernel] 0x33 (0xe57e1fc0))
Jul 7 07:37:16 e kernel:
Jul 7 07:37:16 e kernel:
Jul 7 07:37:16 e kernel: Code: 0f bf 0c 6f 29 d9 8d 81 00 80 00 00 3d ff ff 00 00 0f 87 ce
 
Old 07-08-2003, 12:20 AM   #2
mcleodnine
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Best guess would be that httpd gave you a nasty kernel oops.
 
Old 07-08-2003, 12:31 AM   #3
EvolveNet
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That makes sense. Apache was hung. But... why?

Must... Learn... Faster...

Thanks for the reply.
 
Old 07-08-2003, 12:39 AM   #4
EvolveNet
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Hmmmm, I sense the presence of evil.

[Mon Jul 07 07:37:17 2003] [notice] child pid 15695 exit signal Segmentation fault (11)

This is apache 2.0. Might be a reason everyone says to hang back on 1.3.
Any ideas?

Thanks for the help.
 
  


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