Re: kernel Oops in ext3 code

2007-09-28 Thread Norbert Preining
Hi all,

On Fr, 28 Sep 2007, Mingming Cao wrote:
> i_block_alloc_info, it should be 0x14(20 bytes)...Are you running a
> vanilla 2.6.23-rc6?

Well yes, I add one patch for reducing the usb device resetting time,
but this was definitely not the problem, no usb device was attached.

> from the cache, so racing is not a issue there. Possible random memory
> corruption?

Could be could be. I would say since it is such a strange thing and
nobody has an idea we leave it for now, random memory corruption sounds
nice. If it occurs I can come back.


Best wishes

Norbert

---
Dr. Norbert Preining <[EMAIL PROTECTED]>Vienna University of Technology
Debian Developer <[EMAIL PROTECTED]> Debian TeX Group
gpg DSA: 0x09C5B094  fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
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 --- in four years.
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Re: kernel Oops in ext3 code

2007-09-28 Thread Aneesh Kumar K.V



Mingming Cao wrote:

BUG: unable to handle kernel paging request at virtual address 104b
 printing eip:
 c0195bd3
 *pde = 
 Oops:  [#1]
 PREEMPT SMP 
 Modules linked in: vboxdrv binfmt_misc fuse coretemp hwmon gspca videodev v4l2_common v4l1_compat iwl3945 mac80211 tifm_7xx1 tifm_core joydev irda crc_ccitt 8250_pnp 8250 serial_core firewire_ohci firewire_core crc_itu_t

 CPU:0
 EIP:0060:[]Not tainted VLI
 EFLAGS: 00010206   (2.6.23-rc6 #1)
 EIP is at ext3_discard_reservation+0x18/0x4d
 eax: dff23800   ebx: 1033   ecx: dfc15ec0   edx: 
 esi: c0007c44   edi: 1033   ebp: dfc2bef4   esp: dfc2beac
 ds: 007b   es: 007b   fs: 00d8  gs:   ss: 0068
 Process kswapd0 (pid: 261, ti=dfc2a000 task=dfcac570 task.ti=dfc2a000)
 Stack: c0007ba4 c0007c44 1033 c019ec51 c0007c44 c0007d8c 002c c0171b1b 
002c c0007c44 c0007c4c c0171da2 c050880c  0080 0080 
c0171fb8 0080 c0007e48 df9e3910 7404 c03f5634 0080 00d0 
 Call Trace:

  [] ext3_clear_inode+0x5d/0x76
  [] clear_inode+0x6b/0xb9
  [] dispose_list+0x48/0xc9
  [] shrink_icache_memory+0x195/0x1bd
  [] shrink_slab+0xe2/0x159
  [] kswapd+0x2d3/0x431
  [] autoremove_wake_function+0x0/0x33
  [] kswapd+0x0/0x431
  [] kthread+0x38/0x5d
  [] kthread+0x0/0x5d
  [] kernel_thread_helper+0x7/0x10
  ===
 Code: 83 f8 01 19 c0 f7 d0 83 e0 08 89 42 0c 89 56 b4 5b 5e c3 57 56 89 c6 53 8b 58 b4 8b 80 a4 00 00 00 85 db 8b 80 78 01 00 00 74 30 <83> 7b 18 00 74 2a 8d b8 00 03 00 00 89 f8 e8 b8 ca 1a 00 83 7b 
 EIP: [] ext3_discard_reservation+0x18/0x4d SS:ESP 0068:dfc2beac



On Fri, 2007-09-28 at 17:00 +0200, Norbert Preining wrote: 

On Fr, 28 Sep 2007, Badari Pulavarty wrote:
objdump -DlS balloc.o 

Here it is



Thanks

Looks like kernel oops at 1753(173b+0x18):

173b :
ext3_discard_reservation():
173b:   57  push   %edi
173c:   56  push   %esi
173d:   89 c6   mov%eax,%esi
173f:   53  push   %ebx
1740:   8b 58 b4mov-0x4c(%eax),%ebx
1743:   8b 80 a4 00 00 00   mov0xa4(%eax),%eax
1749:   85 db   test   %ebx,%ebx
174b:   8b 80 78 01 00 00   mov0x178(%eax),%eax
1751:   74 30   je 1783

1753:   83 7b 18 00 cmpl   $0x0,0x18(%ebx)

==> Kernel oops here, ebx=1033, match bad
page location 104b(=1033+0x18)


1757:   74 2a   je 1783

1759:   8d b8 00 03 00 00   lea0x300(%eax),%edi
175f:   89 f8   mov%edi,%eax
1761:   e8 fc ff ff ff  call   1762

1766:   83 7b 18 00 cmpl   $0x0,0x18(%ebx)
176a:   74 0d   je 1779

176c:   8b 86 a4 00 00 00   mov0xa4(%esi),%eax
1772:   89 da   mov%ebx,%edx
1774:   e8 dc eb ff ff  call   355 
1779:   89 f8   mov%edi,%eax
177b:   5b  pop%ebx
177c:   5e  pop%esi
177d:   5f  pop%edi
177e:   e9 fc ff ff ff  jmp177f

1783:   5b  pop%ebx
1784:   5e  pop%esi
1785:   5f  pop%edi
1786:   c3  ret


And trying to matching to the code:

void ext3_discard_reservation(struct inode *inode)
{
struct ext3_inode_info *ei = EXT3_I(inode);
struct ext3_block_alloc_info *block_i = ei->i_block_alloc_info;
struct ext3_reserve_window_node *rsv;
spinlock_t *rsv_lock = _SB(inode->i_sb)->s_rsv_window_lock;

if (!block_i)
return;

rsv = _i->rsv_window_node;
if (!rsv_is_empty(>rsv_window)) {

=> kernel oops here

spin_lock(rsv_lock);
if (!rsv_is_empty(>rsv_window))
rsv_window_remove(inode->i_sb, rsv);
spin_unlock(rsv_lock);
}
}


It seems ebx points to block_i(i_block_alloc_info), and that is bad
memory location, so that leads to bad paging request when try to get the
rsv_window structure. 


But it confused me why the rsv_window offset is 0x18 to
i_block_alloc_info, it should be 0x14(20 bytes)...Are you running a
vanilla 2.6.23-rc6?




That is 0x14 + 4 



(gdb) offset ext3_reserve_window_node rsv_window
$7 = (struct ext3_reserve_window *) 0x14
(gdb) offset ext3_reserve_window _rsv_end
$8 = (ext3_fsblk_t *) 0x4


-aneesh



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Re: kernel Oops in ext3 code

2007-09-28 Thread Mingming Cao
> BUG: unable to handle kernel paging request at virtual address 104b
>  printing eip:
>  c0195bd3
>  *pde = 
>  Oops:  [#1]
>  PREEMPT SMP 
>  Modules linked in: vboxdrv binfmt_misc fuse coretemp hwmon gspca videodev 
> v4l2_common v4l1_compat iwl3945 mac80211 tifm_7xx1 tifm_core joydev irda 
> crc_ccitt 8250_pnp 8250 serial_core firewire_ohci firewire_core crc_itu_t
>  CPU:0
>  EIP:0060:[]Not tainted VLI
>  EFLAGS: 00010206   (2.6.23-rc6 #1)
>  EIP is at ext3_discard_reservation+0x18/0x4d
>  eax: dff23800   ebx: 1033   ecx: dfc15ec0   edx: 
>  esi: c0007c44   edi: 1033   ebp: dfc2bef4   esp: dfc2beac
>  ds: 007b   es: 007b   fs: 00d8  gs:   ss: 0068
>  Process kswapd0 (pid: 261, ti=dfc2a000 task=dfcac570 task.ti=dfc2a000)
>  Stack: c0007ba4 c0007c44 1033 c019ec51 c0007c44 c0007d8c 002c 
> c0171b1b 
> 002c c0007c44 c0007c4c c0171da2 c050880c  0080 
> 0080 
> c0171fb8 0080 c0007e48 df9e3910 7404 c03f5634 0080 
> 00d0 
>  Call Trace:
>   [] ext3_clear_inode+0x5d/0x76
>   [] clear_inode+0x6b/0xb9
>   [] dispose_list+0x48/0xc9
>   [] shrink_icache_memory+0x195/0x1bd
>   [] shrink_slab+0xe2/0x159
>   [] kswapd+0x2d3/0x431
>   [] autoremove_wake_function+0x0/0x33
>   [] kswapd+0x0/0x431
>   [] kthread+0x38/0x5d
>   [] kthread+0x0/0x5d
>   [] kernel_thread_helper+0x7/0x10
>   ===
>  Code: 83 f8 01 19 c0 f7 d0 83 e0 08 89 42 0c 89 56 b4 5b 5e c3 57 56 89 c6 
> 53 8b 58 b4 8b 80 a4 00 00 00 85 db 8b 80 78 01 00 00 74 30 <83> 7b 18 00 74 
> 2a 8d b8 00 03 00 00 89 f8 e8 b8 ca 1a 00 83 7b 
>  EIP: [] ext3_discard_reservation+0x18/0x4d SS:ESP 0068:dfc2beac
> 
> 
On Fri, 2007-09-28 at 17:00 +0200, Norbert Preining wrote: 
> On Fr, 28 Sep 2007, Badari Pulavarty wrote:
> > objdump -DlS balloc.o 
> 
> Here it is
> 

Thanks

Looks like kernel oops at 1753(173b+0x18):

173b :
ext3_discard_reservation():
173b:   57  push   %edi
173c:   56  push   %esi
173d:   89 c6   mov%eax,%esi
173f:   53  push   %ebx
1740:   8b 58 b4mov-0x4c(%eax),%ebx
1743:   8b 80 a4 00 00 00   mov0xa4(%eax),%eax
1749:   85 db   test   %ebx,%ebx
174b:   8b 80 78 01 00 00   mov0x178(%eax),%eax
1751:   74 30   je 1783

1753:   83 7b 18 00 cmpl   $0x0,0x18(%ebx)

==> Kernel oops here, ebx=1033, match bad
page location 104b(=1033+0x18)


1757:   74 2a   je 1783

1759:   8d b8 00 03 00 00   lea0x300(%eax),%edi
175f:   89 f8   mov%edi,%eax
1761:   e8 fc ff ff ff  call   1762

1766:   83 7b 18 00 cmpl   $0x0,0x18(%ebx)
176a:   74 0d   je 1779

176c:   8b 86 a4 00 00 00   mov0xa4(%esi),%eax
1772:   89 da   mov%ebx,%edx
1774:   e8 dc eb ff ff  call   355 
1779:   89 f8   mov%edi,%eax
177b:   5b  pop%ebx
177c:   5e  pop%esi
177d:   5f  pop%edi
177e:   e9 fc ff ff ff  jmp177f

1783:   5b  pop%ebx
1784:   5e  pop%esi
1785:   5f  pop%edi
1786:   c3  ret


And trying to matching to the code:

void ext3_discard_reservation(struct inode *inode)
{
struct ext3_inode_info *ei = EXT3_I(inode);
struct ext3_block_alloc_info *block_i = ei->i_block_alloc_info;
struct ext3_reserve_window_node *rsv;
spinlock_t *rsv_lock = _SB(inode->i_sb)->s_rsv_window_lock;

if (!block_i)
return;

rsv = _i->rsv_window_node;
if (!rsv_is_empty(>rsv_window)) {

=> kernel oops here

spin_lock(rsv_lock);
if (!rsv_is_empty(>rsv_window))
rsv_window_remove(inode->i_sb, rsv);
spin_unlock(rsv_lock);
}
}


It seems ebx points to block_i(i_block_alloc_info), and that is bad
memory location, so that leads to bad paging request when try to get the
rsv_window structure. 

But it confused me why the rsv_window offset is 0x18 to
i_block_alloc_info, it should be 0x14(20 bytes)...Are you running a
vanilla 2.6.23-rc6?

No clue how i_block_alloc_info pointing to a bad location for now.
ext3_alloc_inode() clearly init this field to NULL, and
ext3_clear_inode() clearly set this field to NULL. So during the
lifecycle of the inode, i_block_alloc_info should point to a valid
address or being NULL.

And the stack trace indicating the oops happened when pushing the inode
from the 

Re: kernel Oops in ext3 code

2007-09-28 Thread Badari Pulavarty
On Fri, 2007-09-28 at 06:54 +0200, Norbert Preining wrote:
> Hi Mingming,
> 
> On Do, 27 Sep 2007, Mingming Cao wrote:
> > Could you please sent the objdump of the ext4_discard_reservation
> > function? It doesn't match what I see here.
> 
> I assume you meant ext3_ I made
>   objdump -x -D -s super.o
> (the only place where I found this function in the source code). If you
> want something else, let me know, but a bit more specific. Can I do the
> objdump directly from the kernel image file?
> 

objdump -DlS balloc.o 

would give us ext3_discard_reservation()

Thanks,
Badari

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Re: kernel Oops in ext3 code

2007-09-28 Thread Badari Pulavarty
On Fri, 2007-09-28 at 06:54 +0200, Norbert Preining wrote:
 Hi Mingming,
 
 On Do, 27 Sep 2007, Mingming Cao wrote:
  Could you please sent the objdump of the ext4_discard_reservation
  function? It doesn't match what I see here.
 
 I assume you meant ext3_ I made
   objdump -x -D -s super.o
 (the only place where I found this function in the source code). If you
 want something else, let me know, but a bit more specific. Can I do the
 objdump directly from the kernel image file?
 

objdump -DlS balloc.o 

would give us ext3_discard_reservation()

Thanks,
Badari

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Re: kernel Oops in ext3 code

2007-09-28 Thread Mingming Cao
 BUG: unable to handle kernel paging request at virtual address 104b
  printing eip:
  c0195bd3
  *pde = 
  Oops:  [#1]
  PREEMPT SMP 
  Modules linked in: vboxdrv binfmt_misc fuse coretemp hwmon gspca videodev 
 v4l2_common v4l1_compat iwl3945 mac80211 tifm_7xx1 tifm_core joydev irda 
 crc_ccitt 8250_pnp 8250 serial_core firewire_ohci firewire_core crc_itu_t
  CPU:0
  EIP:0060:[c0195bd3]Not tainted VLI
  EFLAGS: 00010206   (2.6.23-rc6 #1)
  EIP is at ext3_discard_reservation+0x18/0x4d
  eax: dff23800   ebx: 1033   ecx: dfc15ec0   edx: 
  esi: c0007c44   edi: 1033   ebp: dfc2bef4   esp: dfc2beac
  ds: 007b   es: 007b   fs: 00d8  gs:   ss: 0068
  Process kswapd0 (pid: 261, ti=dfc2a000 task=dfcac570 task.ti=dfc2a000)
  Stack: c0007ba4 c0007c44 1033 c019ec51 c0007c44 c0007d8c 002c 
 c0171b1b 
 002c c0007c44 c0007c4c c0171da2 c050880c  0080 
 0080 
 c0171fb8 0080 c0007e48 df9e3910 7404 c03f5634 0080 
 00d0 
  Call Trace:
   [c019ec51] ext3_clear_inode+0x5d/0x76
   [c0171b1b] clear_inode+0x6b/0xb9
   [c0171da2] dispose_list+0x48/0xc9
   [c0171fb8] shrink_icache_memory+0x195/0x1bd
   [c014f5ec] shrink_slab+0xe2/0x159
   [c014f9a0] kswapd+0x2d3/0x431
   [c0132520] autoremove_wake_function+0x0/0x33
   [c014f6cd] kswapd+0x0/0x431
   [c0132453] kthread+0x38/0x5d
   [c013241b] kthread+0x0/0x5d
   [c0104b73] kernel_thread_helper+0x7/0x10
   ===
  Code: 83 f8 01 19 c0 f7 d0 83 e0 08 89 42 0c 89 56 b4 5b 5e c3 57 56 89 c6 
 53 8b 58 b4 8b 80 a4 00 00 00 85 db 8b 80 78 01 00 00 74 30 83 7b 18 00 74 
 2a 8d b8 00 03 00 00 89 f8 e8 b8 ca 1a 00 83 7b 
  EIP: [c0195bd3] ext3_discard_reservation+0x18/0x4d SS:ESP 0068:dfc2beac
 
 
On Fri, 2007-09-28 at 17:00 +0200, Norbert Preining wrote: 
 On Fr, 28 Sep 2007, Badari Pulavarty wrote:
  objdump -DlS balloc.o 
 
 Here it is
 

Thanks

Looks like kernel oops at 1753(173b+0x18):

173b ext3_discard_reservation:
ext3_discard_reservation():
173b:   57  push   %edi
173c:   56  push   %esi
173d:   89 c6   mov%eax,%esi
173f:   53  push   %ebx
1740:   8b 58 b4mov-0x4c(%eax),%ebx
1743:   8b 80 a4 00 00 00   mov0xa4(%eax),%eax
1749:   85 db   test   %ebx,%ebx
174b:   8b 80 78 01 00 00   mov0x178(%eax),%eax
1751:   74 30   je 1783
ext3_discard_reservation+0x48
1753:   83 7b 18 00 cmpl   $0x0,0x18(%ebx)

== Kernel oops here, ebx=1033, match bad
page location 104b(=1033+0x18)


1757:   74 2a   je 1783
ext3_discard_reservation+0x48
1759:   8d b8 00 03 00 00   lea0x300(%eax),%edi
175f:   89 f8   mov%edi,%eax
1761:   e8 fc ff ff ff  call   1762
ext3_discard_reservation+0x27
1766:   83 7b 18 00 cmpl   $0x0,0x18(%ebx)
176a:   74 0d   je 1779
ext3_discard_reservation+0x3e
176c:   8b 86 a4 00 00 00   mov0xa4(%esi),%eax
1772:   89 da   mov%ebx,%edx
1774:   e8 dc eb ff ff  call   355 rsv_window_remove
1779:   89 f8   mov%edi,%eax
177b:   5b  pop%ebx
177c:   5e  pop%esi
177d:   5f  pop%edi
177e:   e9 fc ff ff ff  jmp177f
ext3_discard_reservation+0x44
1783:   5b  pop%ebx
1784:   5e  pop%esi
1785:   5f  pop%edi
1786:   c3  ret


And trying to matching to the code:

void ext3_discard_reservation(struct inode *inode)
{
struct ext3_inode_info *ei = EXT3_I(inode);
struct ext3_block_alloc_info *block_i = ei-i_block_alloc_info;
struct ext3_reserve_window_node *rsv;
spinlock_t *rsv_lock = EXT3_SB(inode-i_sb)-s_rsv_window_lock;

if (!block_i)
return;

rsv = block_i-rsv_window_node;
if (!rsv_is_empty(rsv-rsv_window)) {

= kernel oops here

spin_lock(rsv_lock);
if (!rsv_is_empty(rsv-rsv_window))
rsv_window_remove(inode-i_sb, rsv);
spin_unlock(rsv_lock);
}
}


It seems ebx points to block_i(i_block_alloc_info), and that is bad
memory location, so that leads to bad paging request when try to get the
rsv_window structure. 

But it confused me why the rsv_window offset is 0x18 to
i_block_alloc_info, it should be 0x14(20 bytes)...Are you running a
vanilla 2.6.23-rc6?

No clue how i_block_alloc_info pointing to a bad location for now.
ext3_alloc_inode() clearly init this field to 

Re: kernel Oops in ext3 code

2007-09-28 Thread Aneesh Kumar K.V



Mingming Cao wrote:

BUG: unable to handle kernel paging request at virtual address 104b
 printing eip:
 c0195bd3
 *pde = 
 Oops:  [#1]
 PREEMPT SMP 
 Modules linked in: vboxdrv binfmt_misc fuse coretemp hwmon gspca videodev v4l2_common v4l1_compat iwl3945 mac80211 tifm_7xx1 tifm_core joydev irda crc_ccitt 8250_pnp 8250 serial_core firewire_ohci firewire_core crc_itu_t

 CPU:0
 EIP:0060:[c0195bd3]Not tainted VLI
 EFLAGS: 00010206   (2.6.23-rc6 #1)
 EIP is at ext3_discard_reservation+0x18/0x4d
 eax: dff23800   ebx: 1033   ecx: dfc15ec0   edx: 
 esi: c0007c44   edi: 1033   ebp: dfc2bef4   esp: dfc2beac
 ds: 007b   es: 007b   fs: 00d8  gs:   ss: 0068
 Process kswapd0 (pid: 261, ti=dfc2a000 task=dfcac570 task.ti=dfc2a000)
 Stack: c0007ba4 c0007c44 1033 c019ec51 c0007c44 c0007d8c 002c c0171b1b 
002c c0007c44 c0007c4c c0171da2 c050880c  0080 0080 
c0171fb8 0080 c0007e48 df9e3910 7404 c03f5634 0080 00d0 
 Call Trace:

  [c019ec51] ext3_clear_inode+0x5d/0x76
  [c0171b1b] clear_inode+0x6b/0xb9
  [c0171da2] dispose_list+0x48/0xc9
  [c0171fb8] shrink_icache_memory+0x195/0x1bd
  [c014f5ec] shrink_slab+0xe2/0x159
  [c014f9a0] kswapd+0x2d3/0x431
  [c0132520] autoremove_wake_function+0x0/0x33
  [c014f6cd] kswapd+0x0/0x431
  [c0132453] kthread+0x38/0x5d
  [c013241b] kthread+0x0/0x5d
  [c0104b73] kernel_thread_helper+0x7/0x10
  ===
 Code: 83 f8 01 19 c0 f7 d0 83 e0 08 89 42 0c 89 56 b4 5b 5e c3 57 56 89 c6 53 8b 58 b4 8b 80 a4 00 00 00 85 db 8b 80 78 01 00 00 74 30 83 7b 18 00 74 2a 8d b8 00 03 00 00 89 f8 e8 b8 ca 1a 00 83 7b 
 EIP: [c0195bd3] ext3_discard_reservation+0x18/0x4d SS:ESP 0068:dfc2beac



On Fri, 2007-09-28 at 17:00 +0200, Norbert Preining wrote: 

On Fr, 28 Sep 2007, Badari Pulavarty wrote:
objdump -DlS balloc.o 

Here it is



Thanks

Looks like kernel oops at 1753(173b+0x18):

173b ext3_discard_reservation:
ext3_discard_reservation():
173b:   57  push   %edi
173c:   56  push   %esi
173d:   89 c6   mov%eax,%esi
173f:   53  push   %ebx
1740:   8b 58 b4mov-0x4c(%eax),%ebx
1743:   8b 80 a4 00 00 00   mov0xa4(%eax),%eax
1749:   85 db   test   %ebx,%ebx
174b:   8b 80 78 01 00 00   mov0x178(%eax),%eax
1751:   74 30   je 1783
ext3_discard_reservation+0x48
1753:   83 7b 18 00 cmpl   $0x0,0x18(%ebx)

== Kernel oops here, ebx=1033, match bad
page location 104b(=1033+0x18)


1757:   74 2a   je 1783
ext3_discard_reservation+0x48
1759:   8d b8 00 03 00 00   lea0x300(%eax),%edi
175f:   89 f8   mov%edi,%eax
1761:   e8 fc ff ff ff  call   1762
ext3_discard_reservation+0x27
1766:   83 7b 18 00 cmpl   $0x0,0x18(%ebx)
176a:   74 0d   je 1779
ext3_discard_reservation+0x3e
176c:   8b 86 a4 00 00 00   mov0xa4(%esi),%eax
1772:   89 da   mov%ebx,%edx
1774:   e8 dc eb ff ff  call   355 rsv_window_remove
1779:   89 f8   mov%edi,%eax
177b:   5b  pop%ebx
177c:   5e  pop%esi
177d:   5f  pop%edi
177e:   e9 fc ff ff ff  jmp177f
ext3_discard_reservation+0x44
1783:   5b  pop%ebx
1784:   5e  pop%esi
1785:   5f  pop%edi
1786:   c3  ret


And trying to matching to the code:

void ext3_discard_reservation(struct inode *inode)
{
struct ext3_inode_info *ei = EXT3_I(inode);
struct ext3_block_alloc_info *block_i = ei-i_block_alloc_info;
struct ext3_reserve_window_node *rsv;
spinlock_t *rsv_lock = EXT3_SB(inode-i_sb)-s_rsv_window_lock;

if (!block_i)
return;

rsv = block_i-rsv_window_node;
if (!rsv_is_empty(rsv-rsv_window)) {

= kernel oops here

spin_lock(rsv_lock);
if (!rsv_is_empty(rsv-rsv_window))
rsv_window_remove(inode-i_sb, rsv);
spin_unlock(rsv_lock);
}
}


It seems ebx points to block_i(i_block_alloc_info), and that is bad
memory location, so that leads to bad paging request when try to get the
rsv_window structure. 


But it confused me why the rsv_window offset is 0x18 to
i_block_alloc_info, it should be 0x14(20 bytes)...Are you running a
vanilla 2.6.23-rc6?




That is 0x14 + 4 



(gdb) offset ext3_reserve_window_node rsv_window
$7 = (struct ext3_reserve_window *) 0x14
(gdb) offset 

Re: kernel Oops in ext3 code

2007-09-28 Thread Norbert Preining
Hi all,

On Fr, 28 Sep 2007, Mingming Cao wrote:
 i_block_alloc_info, it should be 0x14(20 bytes)...Are you running a
 vanilla 2.6.23-rc6?

Well yes, I add one patch for reducing the usb device resetting time,
but this was definitely not the problem, no usb device was attached.

 from the cache, so racing is not a issue there. Possible random memory
 corruption?

Could be could be. I would say since it is such a strange thing and
nobody has an idea we leave it for now, random memory corruption sounds
nice. If it occurs I can come back.


Best wishes

Norbert

---
Dr. Norbert Preining [EMAIL PROTECTED]Vienna University of Technology
Debian Developer [EMAIL PROTECTED] Debian TeX Group
gpg DSA: 0x09C5B094  fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
---
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is he? Is he?'
 --- Arthur failing in his first lesson of galactic physics
 --- in four years.
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Re: kernel Oops in ext3 code

2007-09-27 Thread Mingming Cao
Hi,
Could you please sent the objdump of the ext4_discard_reservation
function? It doesn't match what I see here.

Thanks,
Mingming

On Thu, 2007-09-27 at 12:31 +0200, [EMAIL PROTECTED]
wrote:
> Hi all!
> 
> (Please Cc)
> 
> kernel 2.6.23-rc6
> Debian/sid
> 
> kernel ooops:
> 
> BUG: unable to handle kernel paging request at virtual address 104b
>  printing eip:
>  c0195bd3
>  *pde = 
>  Oops:  [#1]
>  PREEMPT SMP 
>  Modules linked in: vboxdrv binfmt_misc fuse coretemp hwmon gspca videodev 
> v4l2_common v4l1_compat iwl3945 mac80211 tifm_7xx1 tifm_core joydev irda 
> crc_ccitt 8250_pnp 8250 serial_core firewire_ohci firewire_core crc_itu_t
>  CPU:0
>  EIP:0060:[]Not tainted VLI
>  EFLAGS: 00010206   (2.6.23-rc6 #1)
>  EIP is at ext3_discard_reservation+0x18/0x4d
>  eax: dff23800   ebx: 1033   ecx: dfc15ec0   edx: 
>  esi: c0007c44   edi: 1033   ebp: dfc2bef4   esp: dfc2beac
>  ds: 007b   es: 007b   fs: 00d8  gs:   ss: 0068
>  Process kswapd0 (pid: 261, ti=dfc2a000 task=dfcac570 task.ti=dfc2a000)
>  Stack: c0007ba4 c0007c44 1033 c019ec51 c0007c44 c0007d8c 002c 
> c0171b1b 
> 002c c0007c44 c0007c4c c0171da2 c050880c  0080 
> 0080 
> c0171fb8 0080 c0007e48 df9e3910 7404 c03f5634 0080 
> 00d0 
>  Call Trace:
>   [] ext3_clear_inode+0x5d/0x76
>   [] clear_inode+0x6b/0xb9
>   [] dispose_list+0x48/0xc9
>   [] shrink_icache_memory+0x195/0x1bd
>   [] shrink_slab+0xe2/0x159
>   [] kswapd+0x2d3/0x431
>   [] autoremove_wake_function+0x0/0x33
>   [] kswapd+0x0/0x431
>   [] kthread+0x38/0x5d
>   [] kthread+0x0/0x5d
>   [] kernel_thread_helper+0x7/0x10
>   ===
>  Code: 83 f8 01 19 c0 f7 d0 83 e0 08 89 42 0c 89 56 b4 5b 5e c3 57 56 89 c6 
> 53 8b 58 b4 8b 80 a4 00 00 00 85 db 8b 80 78 01 00 00 74 30 <83> 7b 18 00 74 
> 2a 8d b8 00 03 00 00 89 f8 e8 b8 ca 1a 00 83 7b 
>  EIP: [] ext3_discard_reservation+0x18/0x4d SS:ESP 0068:dfc2beac
> 
> 
> Sysrq did work, so the oops was saved. Good.
> 
> Any ideas?
> 
> Best wishes
> 
> Norbert
> 
> ---
> Dr. Norbert Preining <[EMAIL PROTECTED]>Vienna University of 
> Technology
> Debian Developer <[EMAIL PROTECTED]> Debian TeX Group
> gpg DSA: 0x09C5B094  fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 
> B094
> ---
> As he came into the light they could see his black and
> gold uniform on which the buttons were so highly polished
> that they shone with an intensity that would have made an
> approaching motorist flash his lights in annoyance.
>  --- Douglas Adams, The Hitchhikers Guide to the Galaxy
> -
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Re: kernel Oops in ext3 code

2007-09-27 Thread Rafael J. Wysocki
On Thursday, 27 September 2007 15:13, Norbert Preining wrote:
> On Do, 27 Sep 2007, Rafael J. Wysocki wrote:
> > Does it happen with 2.6.22?
> 
> Hard to say. It didn't happen as long as I used -22, but it didn't
> happen for a long time (since I run -rc6), and it is not reproducible.
> 
> What I did at this time is a:
>   tar -cjf foo.tar.bz2 a-big-dir-with-more-than-800Mb
> I retried it again with -rc6 and it succeeded. So hard to say.
> 
> Best wishes

Thanks.

Let's assume it's not a regression from 2.6.22, then. ;-)

Greetings,
Rafael
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Re: kernel Oops in ext3 code

2007-09-27 Thread Norbert Preining
On Do, 27 Sep 2007, Rafael J. Wysocki wrote:
> Does it happen with 2.6.22?

Hard to say. It didn't happen as long as I used -22, but it didn't
happen for a long time (since I run -rc6), and it is not reproducible.

What I did at this time is a:
tar -cjf foo.tar.bz2 a-big-dir-with-more-than-800Mb
I retried it again with -rc6 and it succeeded. So hard to say.

Best wishes

Norbert

---
Dr. Norbert Preining <[EMAIL PROTECTED]>Vienna University of Technology
Debian Developer <[EMAIL PROTECTED]> Debian TeX Group
gpg DSA: 0x09C5B094  fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
---
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One who collects ten-year-old telephone directories.
--- Douglas Adams, The Meaning of Liff
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Re: kernel Oops in ext3 code

2007-09-27 Thread Rafael J. Wysocki
On Thursday, 27 September 2007 12:31, Norbert Preining wrote:
> Hi all!
> 
> (Please Cc)
> 
> kernel 2.6.23-rc6
> Debian/sid

Does it happen with 2.6.22?

> kernel ooops:
> 
> BUG: unable to handle kernel paging request at virtual address 104b
>  printing eip:
>  c0195bd3
>  *pde = 
>  Oops:  [#1]
>  PREEMPT SMP 
>  Modules linked in: vboxdrv binfmt_misc fuse coretemp hwmon gspca videodev 
> v4l2_common v4l1_compat iwl3945 mac80211 tifm_7xx1 tifm_core joydev irda 
> crc_ccitt 8250_pnp 8250 serial_core firewire_ohci firewire_core crc_itu_t
>  CPU:0
>  EIP:0060:[]Not tainted VLI
>  EFLAGS: 00010206   (2.6.23-rc6 #1)
>  EIP is at ext3_discard_reservation+0x18/0x4d
>  eax: dff23800   ebx: 1033   ecx: dfc15ec0   edx: 
>  esi: c0007c44   edi: 1033   ebp: dfc2bef4   esp: dfc2beac
>  ds: 007b   es: 007b   fs: 00d8  gs:   ss: 0068
>  Process kswapd0 (pid: 261, ti=dfc2a000 task=dfcac570 task.ti=dfc2a000)
>  Stack: c0007ba4 c0007c44 1033 c019ec51 c0007c44 c0007d8c 002c 
> c0171b1b 
> 002c c0007c44 c0007c4c c0171da2 c050880c  0080 
> 0080 
> c0171fb8 0080 c0007e48 df9e3910 7404 c03f5634 0080 
> 00d0 
>  Call Trace:
>   [] ext3_clear_inode+0x5d/0x76
>   [] clear_inode+0x6b/0xb9
>   [] dispose_list+0x48/0xc9
>   [] shrink_icache_memory+0x195/0x1bd
>   [] shrink_slab+0xe2/0x159
>   [] kswapd+0x2d3/0x431
>   [] autoremove_wake_function+0x0/0x33
>   [] kswapd+0x0/0x431
>   [] kthread+0x38/0x5d
>   [] kthread+0x0/0x5d
>   [] kernel_thread_helper+0x7/0x10
>   ===
>  Code: 83 f8 01 19 c0 f7 d0 83 e0 08 89 42 0c 89 56 b4 5b 5e c3 57 56 89 c6 
> 53 8b 58 b4 8b 80 a4 00 00 00 85 db 8b 80 78 01 00 00 74 30 <83> 7b 18 00 74 
> 2a 8d b8 00 03 00 00 89 f8 e8 b8 ca 1a 00 83 7b 
>  EIP: [] ext3_discard_reservation+0x18/0x4d SS:ESP 0068:dfc2beac

Greetings,
Rafael
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kernel Oops in ext3 code

2007-09-27 Thread Norbert Preining
Hi all!

(Please Cc)

kernel 2.6.23-rc6
Debian/sid

kernel ooops:

BUG: unable to handle kernel paging request at virtual address 104b
 printing eip:
 c0195bd3
 *pde = 
 Oops:  [#1]
 PREEMPT SMP 
 Modules linked in: vboxdrv binfmt_misc fuse coretemp hwmon gspca videodev 
v4l2_common v4l1_compat iwl3945 mac80211 tifm_7xx1 tifm_core joydev irda 
crc_ccitt 8250_pnp 8250 serial_core firewire_ohci firewire_core crc_itu_t
 CPU:0
 EIP:0060:[]Not tainted VLI
 EFLAGS: 00010206   (2.6.23-rc6 #1)
 EIP is at ext3_discard_reservation+0x18/0x4d
 eax: dff23800   ebx: 1033   ecx: dfc15ec0   edx: 
 esi: c0007c44   edi: 1033   ebp: dfc2bef4   esp: dfc2beac
 ds: 007b   es: 007b   fs: 00d8  gs:   ss: 0068
 Process kswapd0 (pid: 261, ti=dfc2a000 task=dfcac570 task.ti=dfc2a000)
 Stack: c0007ba4 c0007c44 1033 c019ec51 c0007c44 c0007d8c 002c c0171b1b 
002c c0007c44 c0007c4c c0171da2 c050880c  0080 0080 
c0171fb8 0080 c0007e48 df9e3910 7404 c03f5634 0080 00d0 
 Call Trace:
  [] ext3_clear_inode+0x5d/0x76
  [] clear_inode+0x6b/0xb9
  [] dispose_list+0x48/0xc9
  [] shrink_icache_memory+0x195/0x1bd
  [] shrink_slab+0xe2/0x159
  [] kswapd+0x2d3/0x431
  [] autoremove_wake_function+0x0/0x33
  [] kswapd+0x0/0x431
  [] kthread+0x38/0x5d
  [] kthread+0x0/0x5d
  [] kernel_thread_helper+0x7/0x10
  ===
 Code: 83 f8 01 19 c0 f7 d0 83 e0 08 89 42 0c 89 56 b4 5b 5e c3 57 56 89 c6 53 
8b 58 b4 8b 80 a4 00 00 00 85 db 8b 80 78 01 00 00 74 30 <83> 7b 18 00 74 2a 8d 
b8 00 03 00 00 89 f8 e8 b8 ca 1a 00 83 7b 
 EIP: [] ext3_discard_reservation+0x18/0x4d SS:ESP 0068:dfc2beac


Sysrq did work, so the oops was saved. Good.

Any ideas?

Best wishes

Norbert

---
Dr. Norbert Preining <[EMAIL PROTECTED]>Vienna University of Technology
Debian Developer <[EMAIL PROTECTED]> Debian TeX Group
gpg DSA: 0x09C5B094  fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
---
As he came into the light they could see his black and
gold uniform on which the buttons were so highly polished
that they shone with an intensity that would have made an
approaching motorist flash his lights in annoyance.
 --- Douglas Adams, The Hitchhikers Guide to the Galaxy
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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kernel Oops in ext3 code

2007-09-27 Thread Norbert Preining
Hi all!

(Please Cc)

kernel 2.6.23-rc6
Debian/sid

kernel ooops:

BUG: unable to handle kernel paging request at virtual address 104b
 printing eip:
 c0195bd3
 *pde = 
 Oops:  [#1]
 PREEMPT SMP 
 Modules linked in: vboxdrv binfmt_misc fuse coretemp hwmon gspca videodev 
v4l2_common v4l1_compat iwl3945 mac80211 tifm_7xx1 tifm_core joydev irda 
crc_ccitt 8250_pnp 8250 serial_core firewire_ohci firewire_core crc_itu_t
 CPU:0
 EIP:0060:[c0195bd3]Not tainted VLI
 EFLAGS: 00010206   (2.6.23-rc6 #1)
 EIP is at ext3_discard_reservation+0x18/0x4d
 eax: dff23800   ebx: 1033   ecx: dfc15ec0   edx: 
 esi: c0007c44   edi: 1033   ebp: dfc2bef4   esp: dfc2beac
 ds: 007b   es: 007b   fs: 00d8  gs:   ss: 0068
 Process kswapd0 (pid: 261, ti=dfc2a000 task=dfcac570 task.ti=dfc2a000)
 Stack: c0007ba4 c0007c44 1033 c019ec51 c0007c44 c0007d8c 002c c0171b1b 
002c c0007c44 c0007c4c c0171da2 c050880c  0080 0080 
c0171fb8 0080 c0007e48 df9e3910 7404 c03f5634 0080 00d0 
 Call Trace:
  [c019ec51] ext3_clear_inode+0x5d/0x76
  [c0171b1b] clear_inode+0x6b/0xb9
  [c0171da2] dispose_list+0x48/0xc9
  [c0171fb8] shrink_icache_memory+0x195/0x1bd
  [c014f5ec] shrink_slab+0xe2/0x159
  [c014f9a0] kswapd+0x2d3/0x431
  [c0132520] autoremove_wake_function+0x0/0x33
  [c014f6cd] kswapd+0x0/0x431
  [c0132453] kthread+0x38/0x5d
  [c013241b] kthread+0x0/0x5d
  [c0104b73] kernel_thread_helper+0x7/0x10
  ===
 Code: 83 f8 01 19 c0 f7 d0 83 e0 08 89 42 0c 89 56 b4 5b 5e c3 57 56 89 c6 53 
8b 58 b4 8b 80 a4 00 00 00 85 db 8b 80 78 01 00 00 74 30 83 7b 18 00 74 2a 8d 
b8 00 03 00 00 89 f8 e8 b8 ca 1a 00 83 7b 
 EIP: [c0195bd3] ext3_discard_reservation+0x18/0x4d SS:ESP 0068:dfc2beac


Sysrq did work, so the oops was saved. Good.

Any ideas?

Best wishes

Norbert

---
Dr. Norbert Preining [EMAIL PROTECTED]Vienna University of Technology
Debian Developer [EMAIL PROTECTED] Debian TeX Group
gpg DSA: 0x09C5B094  fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
---
As he came into the light they could see his black and
gold uniform on which the buttons were so highly polished
that they shone with an intensity that would have made an
approaching motorist flash his lights in annoyance.
 --- Douglas Adams, The Hitchhikers Guide to the Galaxy
-
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Re: kernel Oops in ext3 code

2007-09-27 Thread Rafael J. Wysocki
On Thursday, 27 September 2007 12:31, Norbert Preining wrote:
 Hi all!
 
 (Please Cc)
 
 kernel 2.6.23-rc6
 Debian/sid

Does it happen with 2.6.22?

 kernel ooops:
 
 BUG: unable to handle kernel paging request at virtual address 104b
  printing eip:
  c0195bd3
  *pde = 
  Oops:  [#1]
  PREEMPT SMP 
  Modules linked in: vboxdrv binfmt_misc fuse coretemp hwmon gspca videodev 
 v4l2_common v4l1_compat iwl3945 mac80211 tifm_7xx1 tifm_core joydev irda 
 crc_ccitt 8250_pnp 8250 serial_core firewire_ohci firewire_core crc_itu_t
  CPU:0
  EIP:0060:[c0195bd3]Not tainted VLI
  EFLAGS: 00010206   (2.6.23-rc6 #1)
  EIP is at ext3_discard_reservation+0x18/0x4d
  eax: dff23800   ebx: 1033   ecx: dfc15ec0   edx: 
  esi: c0007c44   edi: 1033   ebp: dfc2bef4   esp: dfc2beac
  ds: 007b   es: 007b   fs: 00d8  gs:   ss: 0068
  Process kswapd0 (pid: 261, ti=dfc2a000 task=dfcac570 task.ti=dfc2a000)
  Stack: c0007ba4 c0007c44 1033 c019ec51 c0007c44 c0007d8c 002c 
 c0171b1b 
 002c c0007c44 c0007c4c c0171da2 c050880c  0080 
 0080 
 c0171fb8 0080 c0007e48 df9e3910 7404 c03f5634 0080 
 00d0 
  Call Trace:
   [c019ec51] ext3_clear_inode+0x5d/0x76
   [c0171b1b] clear_inode+0x6b/0xb9
   [c0171da2] dispose_list+0x48/0xc9
   [c0171fb8] shrink_icache_memory+0x195/0x1bd
   [c014f5ec] shrink_slab+0xe2/0x159
   [c014f9a0] kswapd+0x2d3/0x431
   [c0132520] autoremove_wake_function+0x0/0x33
   [c014f6cd] kswapd+0x0/0x431
   [c0132453] kthread+0x38/0x5d
   [c013241b] kthread+0x0/0x5d
   [c0104b73] kernel_thread_helper+0x7/0x10
   ===
  Code: 83 f8 01 19 c0 f7 d0 83 e0 08 89 42 0c 89 56 b4 5b 5e c3 57 56 89 c6 
 53 8b 58 b4 8b 80 a4 00 00 00 85 db 8b 80 78 01 00 00 74 30 83 7b 18 00 74 
 2a 8d b8 00 03 00 00 89 f8 e8 b8 ca 1a 00 83 7b 
  EIP: [c0195bd3] ext3_discard_reservation+0x18/0x4d SS:ESP 0068:dfc2beac

Greetings,
Rafael
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Re: kernel Oops in ext3 code

2007-09-27 Thread Norbert Preining
On Do, 27 Sep 2007, Rafael J. Wysocki wrote:
 Does it happen with 2.6.22?

Hard to say. It didn't happen as long as I used -22, but it didn't
happen for a long time (since I run -rc6), and it is not reproducible.

What I did at this time is a:
tar -cjf foo.tar.bz2 a-big-dir-with-more-than-800Mb
I retried it again with -rc6 and it succeeded. So hard to say.

Best wishes

Norbert

---
Dr. Norbert Preining [EMAIL PROTECTED]Vienna University of Technology
Debian Developer [EMAIL PROTECTED] Debian TeX Group
gpg DSA: 0x09C5B094  fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
---
ALDCLUNE (n.)
One who collects ten-year-old telephone directories.
--- Douglas Adams, The Meaning of Liff
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Re: kernel Oops in ext3 code

2007-09-27 Thread Rafael J. Wysocki
On Thursday, 27 September 2007 15:13, Norbert Preining wrote:
 On Do, 27 Sep 2007, Rafael J. Wysocki wrote:
  Does it happen with 2.6.22?
 
 Hard to say. It didn't happen as long as I used -22, but it didn't
 happen for a long time (since I run -rc6), and it is not reproducible.
 
 What I did at this time is a:
   tar -cjf foo.tar.bz2 a-big-dir-with-more-than-800Mb
 I retried it again with -rc6 and it succeeded. So hard to say.
 
 Best wishes

Thanks.

Let's assume it's not a regression from 2.6.22, then. ;-)

Greetings,
Rafael
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Re: kernel Oops in ext3 code

2007-09-27 Thread Mingming Cao
Hi,
Could you please sent the objdump of the ext4_discard_reservation
function? It doesn't match what I see here.

Thanks,
Mingming

On Thu, 2007-09-27 at 12:31 +0200, [EMAIL PROTECTED]
wrote:
 Hi all!
 
 (Please Cc)
 
 kernel 2.6.23-rc6
 Debian/sid
 
 kernel ooops:
 
 BUG: unable to handle kernel paging request at virtual address 104b
  printing eip:
  c0195bd3
  *pde = 
  Oops:  [#1]
  PREEMPT SMP 
  Modules linked in: vboxdrv binfmt_misc fuse coretemp hwmon gspca videodev 
 v4l2_common v4l1_compat iwl3945 mac80211 tifm_7xx1 tifm_core joydev irda 
 crc_ccitt 8250_pnp 8250 serial_core firewire_ohci firewire_core crc_itu_t
  CPU:0
  EIP:0060:[c0195bd3]Not tainted VLI
  EFLAGS: 00010206   (2.6.23-rc6 #1)
  EIP is at ext3_discard_reservation+0x18/0x4d
  eax: dff23800   ebx: 1033   ecx: dfc15ec0   edx: 
  esi: c0007c44   edi: 1033   ebp: dfc2bef4   esp: dfc2beac
  ds: 007b   es: 007b   fs: 00d8  gs:   ss: 0068
  Process kswapd0 (pid: 261, ti=dfc2a000 task=dfcac570 task.ti=dfc2a000)
  Stack: c0007ba4 c0007c44 1033 c019ec51 c0007c44 c0007d8c 002c 
 c0171b1b 
 002c c0007c44 c0007c4c c0171da2 c050880c  0080 
 0080 
 c0171fb8 0080 c0007e48 df9e3910 7404 c03f5634 0080 
 00d0 
  Call Trace:
   [c019ec51] ext3_clear_inode+0x5d/0x76
   [c0171b1b] clear_inode+0x6b/0xb9
   [c0171da2] dispose_list+0x48/0xc9
   [c0171fb8] shrink_icache_memory+0x195/0x1bd
   [c014f5ec] shrink_slab+0xe2/0x159
   [c014f9a0] kswapd+0x2d3/0x431
   [c0132520] autoremove_wake_function+0x0/0x33
   [c014f6cd] kswapd+0x0/0x431
   [c0132453] kthread+0x38/0x5d
   [c013241b] kthread+0x0/0x5d
   [c0104b73] kernel_thread_helper+0x7/0x10
   ===
  Code: 83 f8 01 19 c0 f7 d0 83 e0 08 89 42 0c 89 56 b4 5b 5e c3 57 56 89 c6 
 53 8b 58 b4 8b 80 a4 00 00 00 85 db 8b 80 78 01 00 00 74 30 83 7b 18 00 74 
 2a 8d b8 00 03 00 00 89 f8 e8 b8 ca 1a 00 83 7b 
  EIP: [c0195bd3] ext3_discard_reservation+0x18/0x4d SS:ESP 0068:dfc2beac
 
 
 Sysrq did work, so the oops was saved. Good.
 
 Any ideas?
 
 Best wishes
 
 Norbert
 
 ---
 Dr. Norbert Preining [EMAIL PROTECTED]Vienna University of 
 Technology
 Debian Developer [EMAIL PROTECTED] Debian TeX Group
 gpg DSA: 0x09C5B094  fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 
 B094
 ---
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 gold uniform on which the buttons were so highly polished
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