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Subjectraid5 crash
I am running kernel 2.6.9-gentoo-r10 on an Athlon XP 2400+ computer with a SiI 
3114 SATA controller hosting 4 WD2500JD-00G drives. I have combined these
drives into a raid5 array using software raid, but unfortunately the array is
not stable. I have tried several filesystems (ext3, reiserfs, xfs), but after
copying several gigabytes of data into the array (using scp) and then trying
to read them back (using rsync to compare over the network) always results in
data corruption. Here is the output from 'dmesg':

kernel BUG at drivers/md/raid5.c:813!
invalid operand: 0000 [#1]
Modules linked in: sata_sil libata sbp2 ohci1394 ieee1394 usb_storage ehci_hcd
usbcore
CPU: 0
EIP: 0060:[<c039cdd2>] Not tainted VLI
EFLAGS: 00010006 (2.6.9-gentoo-r10)
EIP is at add_stripe_bio+0x1c2/0x200
eax: 00045168 ebx: d3974b00 ecx: d3974980 edx: 00000000
esi: 00045140 edi: 00000000 ebp: e33200a4 esp: f0a05ac4
ds: 007b es: 007b ss: 0068
Process rsync (pid: 32092, threadinfo=f0a04000 task=f6c10020)
Stack: 00000000 00000296 00000140 e3320028 00045140 00000000 d3974980 c039e092
e3320028 d3974980 00000000 00000000 00000000 f0a05b1c de3e1ae0 00045158
00000000 00000003 00000004 de3e1ae0 dfe90e00 00000000 00000003 f7d85088
Call Trace:
[<c039e092>] make_request+0x122/0x200
[<c032dc6f>] generic_make_request+0x15f/0x1e0
[<c011d590>] autoremove_wake_function+0x0/0x60
[<c032dd4d>] submit_bio+0x5d/0x100
[<c0172d43>] mpage_bio_submit+0x23/0x40
[<c0173170>] do_mpage_readpage+0x2d0/0x480
[<c012367d>] __do_softirq+0x7d/0x90
[<c02b54df>] radix_tree_node_alloc+0x1f/0x60
[<c02b5762>] radix_tree_insert+0xe2/0x100
[<c0136e54>] add_to_page_cache+0x54/0x80
[<c017346b>] mpage_readpages+0x14b/0x180
[<c018f1f0>] reiserfs_get_block+0x0/0x1450
[<c013ddf4>] read_pages+0x134/0x140
[<c018f1f0>] reiserfs_get_block+0x0/0x1450
[<c013b390>] __alloc_pages+0x1d0/0x370
[<c01081c5>] do_IRQ+0xc5/0xe0
[<c013e04f>] do_page_cache_readahead+0xcf/0x130
[<c013e19f>] page_cache_readahead+0xef/0x1e0
[<c013765c>] do_generic_mapping_read+0x11c/0x4d0
[<c0137cae>] __generic_file_aio_read+0x1be/0x1f0
[<c0137a10>] file_read_actor+0x0/0xe0
[<c0137e1a>] generic_file_read+0xba/0xe0
[<c011ac24>] do_page_fault+0x194/0x591
[<c011d590>] autoremove_wake_function+0x0/0x60
[<c0126f6b>] update_wall_time+0xb/0x40
[<c012739f>] do_timer+0xdf/0xf0
[<c015270c>] vfs_read+0xbc/0x170
[<c012367d>] __do_softirq+0x7d/0x90
[<c0152a71>] sys_read+0x51/0x80
[<c010603b>] syscall_call+0x7/0xb
Code: 72 08 0f ba a8 90 00 00 00 02 83 c4 0c 5b 5e 5f 5d c3 89 cb e9 cd fe ff
ff 8b 5d 00 e9 c5 fe ff ff 77 08 39 f0 0f 86 94 fe ff ff <0f> 0b 2d 0370 92
44 c0 e9 87 fe ff ff 0f 87 a8 fe ff ff 39 f0
Any idea whether this is a kernel bug or a hardware problem?
Please CC any replies to me.

Sincerely,

--
Kristian
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