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Subject[OOPS] 2.6.11.7 in reiserfs ?
From
Date
Hi,

Late nite i had my first oops on my central backups server after years
without any problems. I upgraded recently from 2.6.9 to 2.6.11.7

I dont know what triggers the oops but probably this was due the fact,
that i enlarged the pressure towards filesystem and tape because i have
no 4 times more clients backuped in parallel than before.


This is the OOPS:
Unable to handle kernel paging request at virtual address ffffffff
printing eip:
c012dbf8
*pde = 00001067
*pte = 00000000
Oops: 0000 [#1]
Modules linked in: aic7xxx
CPU: 0
EIP: 0060:[<c012dbf8>] Not tainted VLI
EFLAGS: 00010286 (2.6.11.7)
EIP is at test_clear_page_writeback+0x98/0xd0
eax: 00000004 ebx: cb56928c ecx: 00000086 edx: ffffffff
esi: ffffffff edi: c1136040 ebp: 00000282 esp: cf689d30
ds: 007b es: 007b ss: 0068
Process pdflush (pid: 7, threadinfo=cf688000 task=cf663a40)
Stack: 00000004 ffffffff 00000282 c1136040 ce8922cc ce8922cc 00000000
c0127b69
c1136040 ce8922cc c018567e c1136040 0000000e cf689d6c 00000001
ce126200
00000000 00000000 cb5691ec cf689f38 c0127e77 cb569290 cf689e08
00000000
Call Trace:
[<c0127b69>] end_page_writeback+0x29/0x50
[<c018567e>] reiserfs_write_full_page+0x1de/0x420
[<c0127e77>] find_get_pages_tag+0x37/0x70
[<c0185906>] reiserfs_writepage+0x26/0x40
[<c0165292>] mpage_writepages+0x262/0x3d0
[<c01858e0>] reiserfs_writepage+0x0/0x40
[<c012d6fd>] do_writepages+0x3d/0x50
[<c01639d6>] __sync_single_inode+0x56/0x1f0
[<c0163bd7>] __writeback_single_inode+0x67/0x130
[<c012dec0>] pdflush+0x0/0x30
[<c019fcc4>] journal_end_sync+0x54/0xa0
[<c018d6e3>] reiserfs_sync_fs+0x63/0x70
[<c0163e3c>] sync_sb_inodes+0x19c/0x280
[<c012dec0>] pdflush+0x0/0x30
[<c0163fb6>] writeback_inodes+0x96/0xa0
[<c012d4cb>] wb_kupdate+0x8b/0x100
[<c012de0f>] __pdflush+0x8f/0x140
[<c012dee8>] pdflush+0x28/0x30
[<c012d440>] wb_kupdate+0x0/0x100
[<c012dec0>] pdflush+0x0/0x30
[<c01217e5>] kthread+0xa5/0xb0
[<c0121740>] kthread+0x0/0xb0
[<c01006b1>] kernel_thread_helper+0x5/0x14
Code: 0c 8b 7c 24 14 8b 74 24 10 8b 6c 24 18 83 c4 1c c3 8b 47 0c eb cc
c7 44 24 04 ff ff ff ff c7 04 24 04 00 00 00 e8 59 eb ff ff eb <a6> 8d
b4 26 00 00 00 00 0f
ba 37 0d 19 db 85 db 75 04 89 de eb
<7>spurious 8259A interrupt: IRQ15.
Unable to handle kernel paging request at virtual address ffffffff
c012dbf8
*pde = 00001067
Oops: 0000 [#1]
CPU: 0
EIP: 0060:[<c012dbf8>] Not tainted VLI
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010286 (2.6.11.7)
eax: 00000004 ebx: cb56928c ecx: 00000086 edx: ffffffff
esi: ffffffff edi: c1136040 ebp: 00000282 esp: cf689d30
ds: 007b es: 007b ss: 0068
Stack: 00000004 ffffffff 00000282 c1136040 ce8922cc ce8922cc 00000000
c0127b69
c1136040 ce8922cc c018567e c1136040 0000000e cf689d6c 00000001
ce126200
00000000 00000000 cb5691ec cf689f38 c0127e77 cb569290 cf689e08
00000000
Call Trace:
[<c0127b69>] end_page_writeback+0x29/0x50
[<c018567e>] reiserfs_write_full_page+0x1de/0x420
[<c0127e77>] find_get_pages_tag+0x37/0x70
[<c0185906>] reiserfs_writepage+0x26/0x40
[<c0165292>] mpage_writepages+0x262/0x3d0
[<c01858e0>] reiserfs_writepage+0x0/0x40
[<c012d6fd>] do_writepages+0x3d/0x50
[<c01639d6>] __sync_single_inode+0x56/0x1f0
[<c0163bd7>] __writeback_single_inode+0x67/0x130
[<c012dec0>] pdflush+0x0/0x30
[<c019fcc4>] journal_end_sync+0x54/0xa0
[<c018d6e3>] reiserfs_sync_fs+0x63/0x70
[<c0163e3c>] sync_sb_inodes+0x19c/0x280
[<c012dec0>] pdflush+0x0/0x30
[<c0163fb6>] writeback_inodes+0x96/0xa0
[<c012d4cb>] wb_kupdate+0x8b/0x100
[<c012de0f>] __pdflush+0x8f/0x140
[<c012dee8>] pdflush+0x28/0x30
[<c012d440>] wb_kupdate+0x0/0x100
[<c012dec0>] pdflush+0x0/0x30
[<c01217e5>] kthread+0xa5/0xb0
[<c0121740>] kthread+0x0/0xb0
[<c01006b1>] kernel_thread_helper+0x5/0x14
Code: 0c 8b 7c 24 14 8b 74 24 10 8b 6c 24 18 83 c4 1c c3 8b 47 0c eb cc
c7 44 24 04 ff ff ff ff c7 04 24 04 00 00 00 e8 59 eb ff ff eb <a6> 8d
b4 26 00 00 00 00 0f


>>EIP; c012dbf8 <__set_page_dirty_nobuffers+88/110> <=====

>>ebx; cb56928c <pg0+b18b28c/3fc20400>
>>edx; ffffffff <__kernel_rt_sigreturn+1bbf/????>
>>esi; ffffffff <__kernel_rt_sigreturn+1bbf/????>
>>edi; c1136040 <pg0+d58040/3fc20400>
>>esp; cf689d30 <pg0+f2abd30/3fc20400>

Trace; c0127b69 <kallsyms_release+29/40>
Trace; c018567e <reiserfs_prepare_file_region_for_write+42e/910>
Trace; c0127e77 <wait_on_page_writeback_range+d7/150>
Trace; c0185906 <reiserfs_prepare_file_region_for_write+6b6/910>
Trace; c0165292 <sys_io_destroy+2/30>
Trace; c01858e0 <reiserfs_prepare_file_region_for_write+690/910>
Trace; c012d6fd <background_writeout+5d/b0>
Trace; c01639d6 <__blockdev_direct_IO+96/2ab>
Trace; c0163bd7 <__blockdev_direct_IO+297/2ab>
Trace; c012dec0 <test_clear_page_writeback+10/b0>
Trace; c019fcc4 <direntry_create_vi+154/190>
Trace; c018d6e3 <prepare_error_buf+183/190>
Trace; c0163e3c <aio_setup_ring+dc/220>
Trace; c012dec0 <test_clear_page_writeback+10/b0>
Trace; c0163fb6 <ioctx_alloc+36/160>
Trace; c012d4cb <get_dirty_limits+7b/d0>
Trace; c012de0f <clear_page_dirty_for_io+3f/60>
Trace; c012dee8 <test_clear_page_writeback+38/b0>
Trace; c012d440 <get_writeback_state+40/50>
Trace; c012dec0 <test_clear_page_writeback+10/b0>
Trace; c01217e5 <param_array+55/e0>
Trace; c0121740 <param_get_invbool+0/50>
Trace; c01006b1 <huft_build+271/4c0>

This architecture has variable length instructions, decoding before eip
is unreliable, take these instructions with a pinch of salt.

Code; c012dbcd <__set_page_dirty_nobuffers+5d/110>
00000000 <_EIP>:
Code; c012dbcd <__set_page_dirty_nobuffers+5d/110>
0: 0c 8b or $0x8b,%al
Code; c012dbcf <__set_page_dirty_nobuffers+5f/110>
2: 7c 24 jl 28 <_EIP+0x28>
Code; c012dbd1 <__set_page_dirty_nobuffers+61/110>
4: 14 8b adc $0x8b,%al
Code; c012dbd3 <__set_page_dirty_nobuffers+63/110>
6: 74 24 je 2c <_EIP+0x2c>
Code; c012dbd5 <__set_page_dirty_nobuffers+65/110>
8: 10 8b 6c 24 18 83 adc %cl,0x8318246c(%ebx)
Code; c012dbdb <__set_page_dirty_nobuffers+6b/110>
e: c4 1c c3 les (%ebx,%eax,8),%ebx
Code; c012dbde <__set_page_dirty_nobuffers+6e/110>
11: 8b 47 0c mov 0xc(%edi),%eax
Code; c012dbe1 <__set_page_dirty_nobuffers+71/110>
14: eb cc jmp ffffffe2 <_EIP+0xffffffe2>
Code; c012dbe3 <__set_page_dirty_nobuffers+73/110>
16: c7 44 24 04 ff ff ff movl $0xffffffff,0x4(%esp)
Code; c012dbea <__set_page_dirty_nobuffers+7a/110>
1d: ff
Code; c012dbeb <__set_page_dirty_nobuffers+7b/110>
1e: c7 04 24 04 00 00 00 movl $0x4,(%esp)
Code; c012dbf2 <__set_page_dirty_nobuffers+82/110>
25: e8 59 eb ff ff call ffffeb83 <_EIP+0xffffeb83>
Code; c012dbf7 <__set_page_dirty_nobuffers+87/110>
2a: eb .byte 0xeb

This decode from eip onwards should be reliable

Code; c012dbf8 <__set_page_dirty_nobuffers+88/110>
00000000 <_EIP>:
Code; c012dbf8 <__set_page_dirty_nobuffers+88/110> <=====
0: a6 cmpsb %es:(%edi),%ds:(%esi) <=====
Code; c012dbf9 <__set_page_dirty_nobuffers+89/110>
1: 8d b4 26 00 00 00 00 lea 0x0(%esi),%esi
Code; c012dc00 <__set_page_dirty_nobuffers+90/110>
8: 0f 00 00 sldtl (%eax)

Linux castor 2.6.11.7 #1 Sun May 1 12:33:32 CEST 2005 i686 AMD Duron(tm)
AuthenticAMD GNU/Linux

Gnu C 3.3.4
Gnu make 3.80
binutils 2.15.92.0.2
util-linux 2.12i
mount 2.12i
module-init-tools 3.0
e2fsprogs 1.35
reiserfsprogs 3.6.19
reiser4progs line
nfs-utils 1.0.6
Linux C Library 2.3.4
Dynamic linker (ldd) 2.3.4
Procps 3.2.4
Net-tools 1.60
Kbd 1.12
Sh-utils 5.2.1
scripts/ver_linux: line 90: udevinfo: command not found
Modules Loaded aic7xxx

Im willing to test fixes on demand. Downtime of this machine is no
problem.

--
Stefan Majer <stefan@x-cellent.com>
x-cellent technologies GmbH

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