I got this oops today with linux kernel 2.2.9, compiled with gcc 2.7.2.3
It was non fatal, but during reboot fsck shows unconected inodes.
Options used: -V (default)
-o /lib/modules/2.2.9/ (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-m /boot/System.map-2.2.9 (specified)
-c 1 (default)
Unable to handle kernel NULL pointer dereference at virtual address 00000038
current->tss.cr3 = 01e55000, %cr3 = 01e55000
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c012d3ae>]
EFLAGS: 00010246
eax: 00000000 ebx: c2a8aea0 ecx: c2a8aea0 edx: c2a8aea0
esi: c0bd5a80 edi: c30f8f60 ebp: c2d5a4b0 esp: c0d9ff3c
ds: 0018 es: 0018 ss: 0018
Process sendmail (pid: 14234, process nr: 132, stackpage=c0d9f000)
Stack: c30f8f60 c2da45a0 c2d5a440 c2da45a0 c2d5a440 c0119f72 c1235c60 40008000
40009000 c1235c60 c0fa5f60 c0d9e000 bfffe714 c0d9ffc0 00000000 fffffff4
c010c8c8 00000000 c0124011 c2a8aea0 c2a8aea0 c0122f7e c2a8aea0 00000008
Call Trace: [<c0119f72>] [<c010c8c8>] [<c0124011>] [<c0122f7e>] [<c0122fd4>] [<c0108874>]
Code: 8b 58 38 85 db 74 11 8d 7c 24 14 fc b9 0f 00 00 00 f3 a5 c6
>>EIP: c012d3ae <locks_remove_flock+3a/88>
Trace: c0119f72 <do_mmap+36a/3dc>
Trace: c010c8c8 <old_mmap+b0/e8>
Trace: c0124011 <fput+11/48>
Trace: c0122f7e <filp_close+5a/64>
Trace: c0122fd4 <sys_close+4c/58>
Trace: c0108874 <system_call+34/40>
Code: c012d3ae <locks_remove_flock+3a/88> 00000000 <_EIP>: <===
Code: c012d3ae <locks_remove_flock+3a/88> 0: 8b 58 38 movl 0x38(%eax),%ebx <===
Code: c012d3b1 <locks_remove_flock+3d/88> 3: 85 db testl %ebx,%ebx
Code: c012d3b3 <locks_remove_flock+3f/88> 5: 74 11 je c012d3c6 <locks_remove_flock+52/88>
Code: c012d3b5 <locks_remove_flock+41/88> 7: 8d 7c 24 14 leal 0x14(%esp,1),%edi
Code: c012d3b9 <locks_remove_flock+45/88> b: fc cld
Code: c012d3ba <locks_remove_flock+46/88> c: b9 0f 00 00 00 movl $0xf,%ecx
Code: c012d3bf <locks_remove_flock+4b/88> 11: f3 a5 repz movsl %ds:(%esi),%es:(%edi)
Code: c012d3c1 <locks_remove_flock+4d/88> 13: c6 00 00 movb $0x0,(%eax)
Bye,
Oleg
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