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Subject2.4.19 Kernel Panic Software Raid 5 (md)
Hi!

The panicking server is a AMD TB 850 on a Abit KA7-100 Mainboard with
512mb 'memtested' RAM. The raid5 consists of 8 80gb drives.
hdc: MAXTOR 4K080H4, ATA DISK drive
hdd: WDC WD800AB-00CBA0, ATA DISK drive
hde: MAXTOR 4K080H4, ATA DISK drive
hdf: MAXTOR 4K080H4, ATA DISK drive
hdi: MAXTOR 4K080H4, ATA DISK drive
hdj: WDC WD800AB-00CBA0, ATA DISK drive
hdk: MAXTOR 4K080H4, ATA DISK drive
hdl: WDC WD800AB-00CBA0, ATA DISK drive

root@pikelot:~# cat /proc/mdstat
md0 : active raid5 hdl1[7] hdk1[6] hdj1[5] hdi1[4] hdf1[3] hde1[2] hdd1[1] hdc1[0]
547054144 blocks level 5, 64k chunk, algorithm 2 [8/8] [UUUUUUUU]
[=====>...............] resync = 26.5% (20732272/78150592)
finish=87.3min speed=10948K/sec

The Filesystem on /dev/md0 is ext3 (mke2fs -j -b 4096 -R stride=16 /dev/md0)

The system runs fine until I try to copy 300gb via rsync over FastEthernet
from my Backup server. After about 70gb I got the following Kernel Panic(s):
unmodified (linewrap) output on:
http://www.soohrt.org/stuff/linux/panic/raid5.txt
--
Aug 20 16:48:55 pikelot kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000003
Aug 20 16:48:55 pikelot kernel: printing eip:
Aug 20 16:48:55 pikelot kernel: c0195731
Aug 20 16:48:55 pikelot kernel: *pde = 00000000
Aug 20 16:48:55 pikelot kernel: Oops: 0002
Aug 20 16:48:55 pikelot kernel: CPU: 0
Aug 20 16:48:55 pikelot kernel: EIP: 0010:[remove_hash+17/48] Not
tainted
Aug 20 16:48:55 pikelot kernel: EFLAGS: 00010086
Aug 20 16:48:55 pikelot kernel: eax: ffffffff ebx: c15b5c00 ecx:
df65e000 edx: dfe69e4c
Aug 20 16:48:55 pikelot kernel: esi: df65e000 edi: 00000001 ebp:
d6fcfe40 esp: dbb3dd9c
Aug 20 16:48:55 pikelot kernel: ds: 0018 es: 0018 ss: 0018
Aug 20 16:48:55 pikelot kernel: Process kjournald (pid: 751,
stackpage=dbb3d000)
Aug 20 16:48:55 pikelot kernel: Stack: c0195780 df65e000 c15b5c00
00000000 c0195bd9 c15b5c00 c15b5c00 00000000
Aug 20 16:48:55 pikelot kernel: 00000001 d6fcfe40 c15b5c00
00000000 dbb3c000 00001000 00000018 00000080
Aug 20 16:48:55 pikelot kernel: c0197aa2 2bf75498 c0197ab4
c15b5c00 0647e798 00001000 00000000 d6fcfe40
Aug 20 16:48:55 pikelot kernel: Call Trace: [get_free_stripe+48/80]
[get_active_stripe+601/1280] [raid5_make_request+66/256]
[raid5_make_request+84/256] [md_make_request+56/112]
Aug 20 16:48:55 pikelot kernel: [generic_make_request+284/304]
[submit_bh+78/112] [ll_rw_block+311/416]
[journal_commit_transaction+766/3623] [kjournald+278
/432] [commit_timeout+0/16]
Aug 20 16:48:55 pikelot kernel: [kernel_thread+40/64]
Aug 20 16:48:55 pikelot kernel:
Aug 20 16:48:55 pikelot kernel: Code: 89 50 04 8b 51 04 8b 01 89 02 c7
41 04 00 00 00 00 c3 8d b6
Aug 20 16:48:56 pikelot kernel: <1>Unable to handle kernel NULL pointer
dereference at virtual address 0000022f
Aug 20 16:48:56 pikelot kernel: printing eip:
Aug 20 16:48:56 pikelot kernel: c0195960
Aug 20 16:48:56 pikelot kernel: *pde = 00000000
Aug 20 16:48:56 pikelot kernel: Oops: 0000
Aug 20 16:48:56 pikelot kernel: CPU: 0
Aug 20 16:48:56 pikelot kernel: EIP: 0010:[__find_stripe+48/80]
Not tainted
Aug 20 16:48:56 pikelot kernel: EFLAGS: 00010086
Aug 20 16:48:56 pikelot kernel: eax: ffffffff ebx: 00000008 ecx:
053fdc98 edx: 00000000
Aug 20 16:48:56 pikelot kernel: esi: c15b5c00 edi: 00000393 ebp:
c15ff680 esp: df5d5e70
Aug 20 16:48:56 pikelot kernel: ds: 0018 es: 0018 ss: 0018
Aug 20 16:48:56 pikelot kernel: Process raid5syncd (pid: 9,
stackpage=df5d5000)
Aug 20 16:48:56 pikelot kernel: Stack: c15b5c00 000a7fb9 053fdc98
c0195bb9 c15b5c00 053fdc98 c15b5c00 000a7fb9
Aug 20 16:48:56 pikelot kernel: 053fdc98 c15ff680 00000000
00000000 df5d4000 00001000 00000000 00000282
Aug 20 16:48:56 pikelot kernel: c15b5c00 24bf0780 c0197bd6
c15b5c00 053fdc98 00000000 00000000 df5d4000
Aug 20 16:48:56 pikelot kernel: Call Trace:
[get_active_stripe+569/1280] [raid5_sync_request+70/224]
[md_do_sync+458/1040] [raid5syncd+47/112] [md_thread+246/336]
Aug 20 16:48:56 pikelot kernel: [kernel_thread+40/64]
Aug 20 16:48:56 pikelot kernel:
Aug 20 16:48:56 pikelot kernel: Code: 39 88 30 02 00 00 74 08 8b 00 85
c0 75 f2 31 c0 5b 5e 5f c3
Aug 20 16:48:56 pikelot kernel: <1>Unable to handle kernel paging
request at virtual address 50b16364
Aug 20 16:48:56 pikelot kernel: printing eip:
Aug 20 16:48:56 pikelot kernel: c011d2c5
Aug 20 16:48:56 pikelot kernel: *pde = 00000000
Aug 20 16:48:56 pikelot kernel: Oops: 0002
Aug 20 16:48:56 pikelot kernel: CPU: 0
Aug 20 16:48:56 pikelot kernel: EIP: 0010:[add_timer+181/224] Not
tainted
Aug 20 16:48:56 pikelot kernel: EFLAGS: 00010082
Aug 20 16:48:56 pikelot kernel: eax: dbb3dfdc ebx: 00000206 ecx:
00000000 edx: 50b16360
Aug 20 16:48:56 pikelot kernel: esi: c159bf2c edi: 00000000 ebp:
c159bf40 esp: c159bf14
Aug 20 16:48:56 pikelot kernel: ds: 0018 es: 0018 ss: 0018
Aug 20 16:48:56 pikelot kernel: Process init (pid: 1,
stackpage=c159b000)
Aug 20 16:48:56 pikelot kernel: Stack: c159bf2c 000b545a c0113e45
c159bf2c 00000000 dedec240 00000000 00000000
Aug 20 16:48:56 pikelot kernel: 000b545a c159a000 c0113d80
c159bf74 c013e921 00000004 00000001 da304158
Aug 20 16:48:56 pikelot kernel: 00000104 00000400 c159a000
000001f4 0000000b 00000000 00000000 d5493000
Aug 20 16:48:56 pikelot kernel: Call Trace:
[schedule_timeout+117/160] [process_timeout+0/80] [do_select+417/480]
[sys_select+810/1136] [system_call+51/56]
Aug 20 16:48:56 pikelot kernel:
Aug 20 16:48:56 pikelot kernel: Code: 89 72 04 89 16 89 46 04 89 30 53
9d eb 14 53 9d 8b 44 24 08
Aug 20 16:48:56 pikelot kernel: <0>Kernel panic: Attempted to kill
init!
--

Additional information (dmesg, lspci, ver_linux) can be found under
http://www.soohrt.org/stuff/linux.html

Cheers,
Karsten
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