How to diagnose an Oops report?

Kirk Bauer (kirk@kaybee.org)
Tue, 13 Jan 1998 17:09:25 -0500 (EST)

For the first time with a stable-release kernel, my Linux
machine crashed.

I am still running 2.0.30, so the bug might have been fixed
already.

I would really appreciate it if somebody could tell me how to
track down this bug (or point me to a reference).

Thanks! (Please reply via direct email)

Jan 13 14:51:45 ns kernel: Unable to handle kernel NULL pointer dereference at virtual address c0000014
Jan 13 14:51:45 ns kernel: current->tss.cr3 = 00101000, 8r3 = 00101000
Jan 13 14:51:45 ns kernel: *pde = 00102067
Jan 13 14:51:45 ns kernel: *pte = 00000027
Jan 13 14:51:45 ns kernel: Oops: 0000
Jan 13 14:51:45 ns kernel: CPU: 0
Jan 13 14:51:45 ns kernel: EIP: 0010:[ip_defrag+618/880]
Jan 13 14:51:45 ns kernel: EFLAGS: 00010246
Jan 13 14:51:45 ns kernel: eax: 00000000 ebx: 012cf1d8 ecx: 00000000 edx: 00000000
Jan 13 14:51:45 ns kernel: esi: 0000001c edi: 00000000 ebp: 012cff58 esp: 001c7f70
Jan 13 14:51:45 ns kernel: ds: 0018 es: 0018 fs: 002b gs: 0018 ss: 0018
Jan 13 14:51:45 ns kernel: Process swapper (pid: 0, process nr: 0, stackpage=001c60cc)
Jan 13 14:51:45 ns kernel: Stack: 0000cc38 0000cc08 00000030 001c7fe4 001a00ff 00000000 0000001c 00000014
Jan 13 14:51:45 ns kernel: 00000000 00002000 0000cc1c 00000000 001444c4 0000cc08 0000cc38 001d60a0
Jan 13 14:51:45 ns kernel: 00000000 0000cc38 001cd7fc 00000002 00007e00 00000001 00000000 00000001
Jan 13 14:51:46 ns kernel: Call Trace: [SAK+15/16] [ip_rcv+420/1584] [net_bh+252/304]
Jan 13 14:51:46 ns kernel: Code: 83 7f 14 00 74 09 8b 53 14 8b 43 18 89 42 18 8b 54 24 14 8b
Jan 13 14:51:46 ns kernel: Aiee, killing interrupt handler
Jan 13 14:51:46 ns kernel: kfree of non-kmalloced memory: 001c8114, next= 00000080, order=1142315
Jan 13 14:51:46 ns kernel: kfree of non-kmalloced memory: 001c8104, next= 00000080, order=1142315
Jan 13 14:51:46 ns kernel: kfree of non-kmalloced memory: 001c8618, next= 00000080, order=1142315
Jan 13 14:51:46 ns kernel: idle task may not sleep
Jan 13 14:51:46 ns last message repeated 4 times

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Kirk Bauer -- Georgia Tech -- kirk@kaybee.org <== Finger for PGP
http://www.kaybee.org/~kirk/html ResNet RTA