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List:       linux-ext4
Subject:    [Ext2-devel] strange ext3/jbd oops in 2.4-current
From:       Christoph Hellwig <hch () lst ! de>
Date:       2002-11-15 14:07:49
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I updated one of my debian woody systems to 2.4-bk yesterday and found
this strange oops in the system messages this morning, any ideas?

(note that /boot/System.map-2.4.20-rc1 is the right map, I just didn't
notice marcelo already bumped the version string)


ksymoops 2.4.5 on i686 2.4.20-rc2.  Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.20-rc2/ (default)
     -m /boot/System.map-2.4.20-rc1 (specified)

cpu: 0, clocks: 1991580, slice: 995790
3c59x: Donald Becker and others. www.scyld.com/network/vortex.html
ac97_codec: AC97 Audio codec, id: ALC38(Unknown)
Unable to handle kernel NULL pointer dereference at virtual address 00000028
c015ca12
*pde = 00000000
Oops: 0000
CPU:    0
EIP:    0010:[<c015ca12>]    Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010207
eax: 0100004d   ebx: 00000000   ecx: 000001d0   edx: 00000000
esi: c8d05e40   edi: 00000001   ebp: 00000050   esp: c1431f0c
ds: 0018   es: 0018   ss: 0018
Process kswapd (pid: 4, stackpage=c1431000)
Stack: c1046fdc 000001d0 00000012 00000200 00000000 c0154fae d74f3400 c1046fdc 
       000001d0 c0133a38 c1046fdc 000001d0 c8d05e40 c1046fdc c012b7a2 c1046fdc 
       000001d0 00000020 000001d0 00000020 00000006 00000006 c1430000 000027ce 
Call Trace:    [<c0154fae>] [<c0133a38>] [<c012b7a2>] [<c012ba00>] [<c012ba6c>]
  [<c012bb71>] [<c012bbd6>] [<c012bced>] [<c0106ff8>]
Code: 8b 5b 28 f6 42 19 02 74 17 8d 44 24 10 50 52 e8 0a ff ff ff 


> > EIP; c015ca12 <journal_try_to_free_buffers+5a/98>   <=====

> > eax; 0100004d Before first symbol
> > esi; c8d05e40 <_end+8a3c784/1853a944>
> > esp; c1431f0c <_end+1168850/1853a944>

Trace; c0154fae <ext3_releasepage+22/28>
Trace; c0133a38 <try_to_release_page+30/48>
Trace; c012b7a2 <shrink_cache+1ea/2fc>
Trace; c012ba00 <shrink_caches+58/88>
Trace; c012ba6c <try_to_free_pages_zone+3c/5c>
Trace; c012bb71 <kswapd_balance_pgdat+41/8c>
Trace; c012bbd6 <kswapd_balance+1a/30>
Trace; c012bced <kswapd+99/bc>
Trace; c0106ff8 <kernel_thread+28/38>

Code;  c015ca12 <journal_try_to_free_buffers+5a/98>
00000000 <_EIP>:
Code;  c015ca12 <journal_try_to_free_buffers+5a/98>   <=====
   0:   8b 5b 28                  mov    0x28(%ebx),%ebx   <=====
Code;  c015ca15 <journal_try_to_free_buffers+5d/98>
   3:   f6 42 19 02               testb  $0x2,0x19(%edx)
Code;  c015ca19 <journal_try_to_free_buffers+61/98>
   7:   74 17                     je     20 <_EIP+0x20> c015ca32 \
<journal_try_to_free_buffers+7a/98> Code;  c015ca1b \
<journal_try_to_free_buffers+63/98>  9:   8d 44 24 10               lea    \
0x10(%esp,1),%eax Code;  c015ca1f <journal_try_to_free_buffers+67/98>
   d:   50                        push   %eax
Code;  c015ca20 <journal_try_to_free_buffers+68/98>
   e:   52                        push   %edx
Code;  c015ca21 <journal_try_to_free_buffers+69/98>
   f:   e8 0a ff ff ff            call   ffffff1e <_EIP+0xffffff1e> c015c930 \
<__journal_try_to_free_buffer+0/88>



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