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SubjectRe: PROBLEM: 2.4.19-pre10-ac2 bug in page_alloc.c:131
On Sun, 23 Jun 2002, Diego Calleja wrote:

>
> It'd be nice if you could pass this oops throught ksymoops....
>

Ok, here it is...

Cheers,

Alexandre

>---------------------------------------------------

ksymoops 2.4.5 on i686 2.4.19-pre10-ac2. Options used
-v /usr/src/linux-2.4.19-pre/vmlinux (specified)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.19-pre10-ac2/ (default)
-m /usr/src/linux/System.map (default)

kernel BUG at page_alloc.c:131!
invalid operand: 0000
CPU: 0
EIP: 0010:[<c014177e>] Tainted: P
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010286
eax: cba53f48 ebx: c144955c ecx: c025f6dc edx: 00000000
esi: 00000000 edi: 138de070 ebp: 00001000 esp: c41b7ec8
ds: 0018 es: 0018 ss: 0018
Process X (pid: 3924, stackpage=c41b7000)
Stack: c144955c c0142fca c02ba2a0 00000000 00000001 c144955c 00000000 138de070
d38de070 00000000 138de070 00001000 c01351c6 c144955c 0000000e d2fca688
0000000e 00000001 40400000 cd841404 4001d000 00000000 c013320b d5decd40
Call Trace: [<c0142fca>] [<c01351c6>] [<c013320b>] [<c01367a1>] [<c01368ca>]
[<c010ba0f>]
Code: 0f 0b 83 00 53 b0 23 c0 8b 43 18 c6 43 24 05 89 f1 89 dd 83


>>EIP; c014177e <__free_pages_ok+be/2a0> <=====

>>eax; cba53f48 <_end+b77b478/165f9530>
>>ebx; c144955c <_end+1170a8c/165f9530>
>>ecx; c025f6dc <contig_page_data+dc/3c0>
>>edi; 138de070 Before first symbol
>>ebp; 00001000 Before first symbol
>>esp; c41b7ec8 <_end+3edf3f8/165f9530>

Trace; c0142fca <remove_exclusive_swap_page+ba/120>
Trace; c01351c6 <zap_pte_range+106/260>
Trace; c013320b <zap_page_range+9b/120>
Trace; c01367a1 <do_munmap+221/300>
Trace; c01368ca <sys_munmap+4a/70>
Trace; c010ba0f <system_call+33/38>

Code; c014177e <__free_pages_ok+be/2a0>
00000000 <_EIP>:
Code; c014177e <__free_pages_ok+be/2a0> <=====
0: 0f 0b ud2a <=====
Code; c0141780 <__free_pages_ok+c0/2a0>
2: 83 00 53 addl $0x53,(%eax)
Code; c0141783 <__free_pages_ok+c3/2a0>
5: b0 23 mov $0x23,%al
Code; c0141785 <__free_pages_ok+c5/2a0>
7: c0 8b 43 18 c6 43 24 rorb $0x24,0x43c61843(%ebx)
Code; c014178c <__free_pages_ok+cc/2a0>
e: 05 89 f1 89 dd add $0xdd89f189,%eax
Code; c0141791 <__free_pages_ok+d1/2a0>
13: 83 00 00 addl $0x0,(%eax)

--
Life would be so much easier if we could just look at the source code.

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