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SGI O2 - Oops



Hi,

I have a SGI O2 running Debian Etch and recently I got an Oops message.
Does anybody know what it means? Is this a kernel error or a hardware
problem?

The kernel is self compiled from Debian sources (2.6.18-5). The machine 
needed software RAID-1, so I recompiled it with static CONFIG_MD_RAID1=y.
The rest of the config is Debian standard.

$ uname -a
Linux daemon 2.6.18 #1 Tue Nov 14 08:20:11 CET 2006 mips64 GNU/Linux

$ uptime
 14:42:10 up 78 days,  2:02, 28 users,  load average: 0.53, 0.49, 0.45

$ cat /proc/cpuinfo
system type		: SGI O2
processor		: 0
cpu model		: R5000 V2.1  FPU V1.0
BogoMIPS		: 179.20
wait instruction	: yes
microsecond timers	: yes
tlb_entries		: 48
extra interrupt vector	: no
hardware watchpoint	: no
ASEs implemented	:
VCED exceptions		: not available
VCEI exceptions		: not available

$ free
             total       used       free     shared    buffers     cached
Mem:       1012048     997180      14868          0     458204     233276
-/+ buffers/cache:     305700     706348
Swap:      1020108          0    1020108

$ dmesg
[...]
CPU 0 Unable to handle kernel paging request at virtual address 000000002abd8498, epc == ffffffff8006fb78, ra == ffffffff8006fb3c
Oops[#1]:
Cpu 0
$ 0   : 0000000000000000 ffffffff9001fce0 0000000027bd0059 9800000065fbd5a0
$ 4   : ffffffff9001fce0 000000002abd8490 000000002abd8490 0000000000000000
$ 8   : 980000007885fbe0 0000000000000001 0000000000001000 980000007885c000
$12   : 0000000000000000 ffffffff80000010 ffffffff8009e0d8 0000000000000000
$16   : ffffffffffffffff 0000000000000001 9800000065fbd590 0000000000000000
$20   : 980000007f3eddc0 0000000000000000 00000000000007a0 0000000000000000
$24   : 0000000000000000 000000002abcc510                                  
$28   : 980000007885c000 980000007885fbd0 000000000000079f ffffffff8006fb3c
Hi    : 0000000000000000
Lo    : 0000000000000001
epc   : ffffffff8006fb78 find_get_page+0x68/0xb8     Not tainted
ra    : ffffffff8006fb3c find_get_page+0x2c/0xb8
Status: 9001fce2    KX SX UX KERNEL EXL 
Cause : 00000004
BadVA : 000000002abd8498
PrId  : 00002321
Modules linked in: xt_tcpudp xt_state ip_conntrack nfnetlink iptable_filter ip_tables x_tables ipv6 quota_v2 dm_snapshot dm_mirror dm_mod sg
Process md5sum (pid: 9055, threadinfo=980000007885c000, task=9800000078d5c670)
Stack : ffffffff80070d18 ffffffff80070d08 0000000000000000 0000000000000004
        0000000000000000 0000000000000004 0000000000000000 0000000000000000
        0000000000000000 0000000000000020 0000000000000000 0000000000000000
        0000000000000000 0000000000000001 0000000000000001 9800000065fbd478
        980000007f3ede28 980000007885fdc0 980000007885fcc0 ffffffff8006f310
        980000007885fd20 0000000000000001 0000000000000001 980000007f3eddc0
        980000007885fdc0 0000000000000000 0000000000448080 0000000000000059
        000000002ac8c490 ffffffff80071c68 0000000000000000 0000000000001000
        000000007fbdbe8c 000000007885fde0 0000000000001000 000000007fbdbe8c
        980000007f3eddc0 fffffffffffffdee 980000007885fe88 000000007fbdcf70
        ...
Call Trace:
 [<ffffffff80070d18>] do_generic_mapping_read+0x2e0/0x6b0
 [<ffffffff80070d08>] do_generic_mapping_read+0x2d0/0x6b0
 [<ffffffff8006f310>] file_read_actor+0x0/0x1c0
 [<ffffffff80071c68>] __generic_file_aio_read+0x108/0x280
 [<ffffffff80071e0c>] generic_file_aio_read+0x2c/0x48
 [<ffffffff8009cfc4>] do_sync_read+0xc4/0x140
 [<ffffffff80056318>] autoremove_wake_function+0x0/0x48
 [<ffffffff80089584>] do_mmap_pgoff+0x614/0xa58
 [<ffffffff8009dc30>] vfs_read+0xf0/0x1b0
 [<ffffffff8009e124>] sys_read+0x4c/0x90
 [<ffffffff8001dd68>] handle_sys+0x128/0x144
 [<ffffffff8006f310>] file_read_actor+0x0/0x1c0
 [<ffffffff8001fcf3>] do_page_fault+0x2c2/0x450


Code: 00000040  8cc20008  24420001 <acc20008> 40016000  30840001  3421001f  3821001f  00812025 
CPU 0 Unable to handle kernel paging request at virtual address 000000002abd8498, epc == ffffffff8006fb78, ra == ffffffff8006fb3c
Oops[#2]:
Cpu 0
$ 0   : 0000000000000000 ffffffff9001fce0 0000000027bd0059 9800000065fbd5a0
$ 4   : ffffffff9001fce0 000000002abd8490 000000002abd8490 0000000000000000
$ 8   : 9800000076a3fbe0 0000000000000001 0000000000001000 9800000076a3c000
$12   : 0000000000000000 ffffffff80000010 ffffffff8009e0d8 0000000000000000
$16   : ffffffffffffffff 0000000000000001 9800000065fbd590 0000000000000000
$20   : 98000000647ea280 0000000000000000 00000000000007a0 0000000000000000
$24   : 0000000000000000 000000002abcc510                                  
$28   : 9800000076a3c000 9800000076a3fbd0 000000000000079f ffffffff8006fb3c
Hi    : 0000000000000000
Lo    : 0000000000000001
epc   : ffffffff8006fb78 find_get_page+0x68/0xb8     Not tainted
ra    : ffffffff8006fb3c find_get_page+0x2c/0xb8
Status: 9001fce2    KX SX UX KERNEL EXL 
Cause : 00000004
BadVA : 000000002abd8498
PrId  : 00002321
Modules linked in: xt_tcpudp xt_state ip_conntrack nfnetlink iptable_filter ip_tables x_tables ipv6 quota_v2 dm_snapshot dm_mirror dm_mod sg
Process md5sum (pid: 17176, threadinfo=9800000076a3c000, task=980000007eef4cd8)
Stack : ffffffff80070d18 ffffffff80070d08 0000000000000000 0000000000000004
        0000000000000000 0000000000000004 0000000000000000 0000000000000000
        0000000000000000 0000000000000020 0000000000000000 0000000000000000
        0000000000000000 0000000000000001 0000000000000001 9800000065fbd478
        98000000647ea2e8 9800000076a3fdc0 9800000076a3fcc0 ffffffff8006f310
        9800000076a3fd20 0000000000000001 0000000000000001 98000000647ea280
        9800000076a3fdc0 0000000000000000 0000000000448080 0000000000000059
        000000002ac8c490 ffffffff80071c68 0000000000000000 0000000000001000
        000000007f7fee8c 0000000076a3fde0 0000000000001000 000000007f7fee8c
        98000000647ea280 fffffffffffffdee 9800000076a3fe88 000000007f7fff70
        ...
Call Trace:
 [<ffffffff80070d18>] do_generic_mapping_read+0x2e0/0x6b0
 [<ffffffff80070d08>] do_generic_mapping_read+0x2d0/0x6b0
 [<ffffffff8006f310>] file_read_actor+0x0/0x1c0
 [<ffffffff80071c68>] __generic_file_aio_read+0x108/0x280
 [<ffffffff80071e0c>] generic_file_aio_read+0x2c/0x48
 [<ffffffff8009cfc4>] do_sync_read+0xc4/0x140
 [<ffffffff80056318>] autoremove_wake_function+0x0/0x48
 [<ffffffff80089584>] do_mmap_pgoff+0x614/0xa58
 [<ffffffff8009dc30>] vfs_read+0xf0/0x1b0
 [<ffffffff8009e124>] sys_read+0x4c/0x90
 [<ffffffff8001dd68>] handle_sys+0x128/0x144
 [<ffffffff8000c190>] old_mmap+0x0/0x120
 [<ffffffff8001fcf3>] do_page_fault+0x2c2/0x450


Code: 00000040  8cc20008  24420001 <acc20008> 40016000  30840001  3421001f  3821001f  00812025 

Thanks for any help ...
Mic

-- 
+++ATH0



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