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SubjectOops in block_read_full_page() in test10-pre6

Wierd thing about this oops is that it happened just
as I ticked over between the daylight savings adjustment,
and the system clock changed itself.

Coincidence ? :)

Unable to handle kernel NULL pointer dereference at virtual address
00000010
c012efaa
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c012efaa>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010282
eax: 00000000 ebx: 00000000 ecx: c11c3474 edx: c11c3448
esi: c11c3448 edi: c5bf75fc ebp: 00000000 esp: c201bee4
ds: 0018 es: 0018 ss: 0018
Process bash (pid: 13794, stackpage=c201b000)
Stack: 00000000 c11c3448 c5bf75fc 00000000 0000001a 00000000 c02d3540
00000246
c0121c6e 00000000 c11c3448 c5bf75fc 00000000 c201bf1c 01234567
c201a000
c11c3474 c11c3474 c014ae7e c11c3448 c014a7f8 c0122535 c468c860
c11c3448
Call Trace: [<c0121c6e>] [<c014ae7e>] [<c014a7f8>] [<c0122535>]
[<c0122821>]
[<c0122760>] [<c012cad5>]
[<c010a613>]
Code: 8b 40 10 89 44 24 24 c7 44 24 18 00 00 00 00 8b 42 18 a8 01

>>EIP; c012efaa <block_read_full_page+e/1f4> <=====
Trace; c0121c6e <___wait_on_page+ca/d4>
Trace; c014ae7e <ext2_readpage+e/14>
Trace; c014a7f8 <ext2_get_block+0/480>
Trace; c0122535 <do_generic_file_read+2ad/4d8>
Trace; c0122821 <generic_file_read+59/74>
Trace; c0122760 <file_read_actor+0/68>
Trace; c012cad5 <sys_read+95/cc>
Trace; c010a613 <system_call+33/40>
Code; c012efaa <block_read_full_page+e/1f4>
00000000 <_EIP>:
Code; c012efaa <block_read_full_page+e/1f4> <=====
0: 8b 40 10 mov 0x10(%eax),%eax <=====
Code; c012efad <block_read_full_page+11/1f4>
3: 89 44 24 24 mov %eax,0x24(%esp,1)
Code; c012efb1 <block_read_full_page+15/1f4>
7: c7 44 24 18 00 00 00 movl $0x0,0x18(%esp,1)
Code; c012efb8 <block_read_full_page+1c/1f4>
e: 00
Code; c012efb9 <block_read_full_page+1d/1f4>
f: 8b 42 18 mov 0x18(%edx),%eax
Code; c012efbc <block_read_full_page+20/1f4>
12: a8 01 test $0x1,%al



--
| Dave Jones <davej@suse.de> http://www.suse.de/~davej
| SuSE Labs

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