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From: davej@suse.de
Date: Sun, 29 Oct 2000 17:21:22 +0000 (GMT)
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Oops in block_read_full_page() in test10-pre6
Message-ID: <Pine.LNX.4.21.0010291718570.1707-100000@neo.local>
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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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