Kernel oops 805 running Debian on Qnap TS-119PII
Dear people!
I am running Debian squeeze on my Qnap TS-119PII. No unusual packages
installed, just the ordinary openssh, samba, afp and apache. All seems
to run fine until, once or twice a day, the systems crashes, rendering
it unreachable on all ports (even ping). I am often pumping lot's of
files in it through samba, but I am not sure that is the cause of evil
here.
This is what the log says:
<log-snippet>
Mar 22 13:13:51 debian kernel: [18672.987583] kernel BUG at
/build/buildd-linux-2.6_2.6.32-41-armel-VtoESm/linux-2.6-2.6.32/debian/build/source_armel_none/mm/filemap.c:1944!
Mar 22 13:13:51 debian kernel: [18673.000548] Unable to handle kernel
NULL pointer dereference at virtual address 00000000
Mar 22 13:13:51 debian kernel: [18673.008897] pgd = df124000
Mar 22 13:13:51 debian kernel: [18673.011609] [00000000] *pgd=00000000
Mar 22 13:13:51 debian kernel: [18673.015317] Internal error: Oops: 805 [#1]
Mar 22 13:13:51 debian kernel: [18673.019430] last sysfs file:
/sys/devices/virtual/net/lo/operstate
Mar 22 13:13:51 debian kernel: [18673.025629] Modules linked in: ipv6
nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs ext2 loop mv643xx_eth
ehci_hcd hmac libphy evdev sha1_generic usbcore nls_base mv_cesa
inet_lro gpio_keys aes_generic ext3 jbd mbcache sd_mod crc_t10dif
sata_mv libata scsi_mod
Mar 22 13:13:51 debian kernel: [18673.048923] CPU: 0 Not tainted
(2.6.32-5-kirkwood #1)
Mar 22 13:13:51 debian kernel: [18673.054342] PC is at __bug+0x1c/0x28
Mar 22 13:13:51 debian kernel: [18673.057930] LR is at __bug+0x18/0x28
Mar 22 13:13:51 debian kernel: [18673.061514] pc : [<c002b7f8>] lr
: [<c002b7f4>] psr: 20000013
Mar 22 13:13:51 debian kernel: [18673.061518] sp : df955da0 ip :
00002e22 fp : 00000000
Mar 22 13:13:51 debian kernel: [18673.073050] r10: 00000000 r9 :
00000001 r8 : 8a997000
Mar 22 13:13:51 debian kernel: [18673.078291] r7 : df954000 r6 :
00000000 r5 : 00001000 r4 : 00011de0
Mar 22 13:13:51 debian kernel: [18673.084848] r3 : 00000000 r2 :
00000001 r1 : 60000013 r0 : 00000095
Mar 22 13:13:51 debian kernel: [18673.091397] Flags: nzCv IRQs on
FIQs on Mode SVC_32 ISA ARM Segment user
Mar 22 13:13:51 debian kernel: [18673.098565] Control: 0005397f
Table: 1f124000 DAC: 00000015
Mar 22 13:13:51 debian kernel: [18673.104329] Process smbd (pid: 1129,
stack limit = 0xdf954270)
Mar 22 13:13:51 debian kernel: [18673.110180] Stack: (0xdf955da0 to 0xdf956000)
Mar 22 13:13:51 debian kernel: [18673.114552] 5da0: 00000000 c009f12c
00011de0 c00a0e8c 00001000 00011de0 c0507d80 df4ea9a0
Mar 22 13:13:51 debian kernel: [18673.122766] 5dc0: ceece580 df4eaa3c
00001000 00000000 bf0b8ec0 df4eaa3c df955f50 00000001
Mar 22 13:13:51 debian kernel: [18673.130980] 5de0: 00000000 0000e000
df4ea9a0 c0507d80 8a997000 8a9a5000 00000001 8a997000
Mar 22 13:13:51 debian kernel: [18673.139195] 5e00: 00000001 df4ea9a0
ceece580 0000e000 0000e000 c00a1534 8a997000 00000001
Mar 22 13:13:51 debian kernel: [18673.147409] 5e20: df955f10 0000e000
00000000 00000000 df955eb0 df955f10 df955f50 df955ec0
Mar 22 13:13:51 debian kernel: [18673.155622] 5e40: ceece580 df4eaa3c
00000000 00000001 00000000 000003ac df490300 00000000
Mar 22 13:13:51 debian kernel: [18673.163837] 5e60: 00000000 0000e000
00000000 df4eaa10 df955f50 df955ec0 00000001 00000001
Mar 22 13:13:51 debian kernel: [18673.172051] 5e80: ceece580 8a997000
8a997000 c00a15ec df955f40 df955f80 df955ec0 ceece580
Mar 22 13:13:51 debian kernel: [18673.180266] 5ea0: df955f50 df955fa8
fffffdee df954000 00000000 c00cd964 8a997000 00000001
Mar 22 13:13:51 debian kernel: [18673.188480] 5ec0: 00000000 00000010
00000000 00000001 ffffffff ceece580 00000000 00000000
Mar 22 13:13:51 debian kernel: [18673.196694] 5ee0: 00000000 00000000
dfae2b80 bf158b54 00000000 00000000 df955ef4 dfae2b80
Mar 22 13:13:51 debian kernel: [18673.204909] 5f00: c005d6e4 df955f04
df955f04 df955f80 8a997000 00000001 000003ac 0000000b
Mar 22 13:13:51 debian kernel: [18673.213122] 5f20: df822424 00000080
0000e000 00000000 c03d0d0c 0000012c 001c08f4 c023da68
Mar 22 13:13:51 debian kernel: [18673.221337] 5f40: 00000000 c00cdb54
df954000 0000000c 2a91821c 0000e000 ceece580 2a91821c
Mar 22 13:13:51 debian kernel: [18673.229551] 5f60: df955fa8 000000b5
0000e000 c00ce5c0 0000000b 0000000b 2a91821c ceece580
Mar 22 13:13:51 debian kernel: [18673.237765] 5f80: 0000e000 000000b5
c0028048 c00ce708 c004b68c 00000000 8a997000 00000001
Mar 22 13:13:51 debian kernel: [18673.245979] 5fa0: 0000001f c0027ea0
8a997000 00000001 0000001f 2a91821c 0000e000 00000000
Mar 22 13:13:51 debian kernel: [18673.254194] 5fc0: 8a997000 00000001
0000001f 000000b5 2a91821c 00000001 0000e000 8a997000
Mar 22 13:13:51 debian kernel: [18673.262408] 5fe0: 403f2000 be867220
2a33ea38 40365910 60000010 0000001f 00000000 00000000
Mar 22 13:13:51 debian kernel: [18673.270630] [<c002b7f8>]
(__bug+0x1c/0x28) from [<c009f12c>] (iov_iter_advance+0x74/0xcc)
Mar 22 13:13:51 debian kernel: [18673.278849] [<c009f12c>]
(iov_iter_advance+0x74/0xcc) from [<c00a0e8c>]
(generic_file_buffered_write+0x194/0x288)
Mar 22 13:13:51 debian kernel: [18673.289154] [<c00a0e8c>]
(generic_file_buffered_write+0x194/0x288) from [<c00a1534>]
(__generic_file_aio_write+0x410/0x45c)
Mar 22 13:13:51 debian kernel: [18673.300333] [<c00a1534>]
(__generic_file_aio_write+0x410/0x45c) from [<c00a15ec>]
(generic_file_aio_write+0x6c/0xd4)
Mar 22 13:13:51 debian kernel: [18673.310904] [<c00a15ec>]
(generic_file_aio_write+0x6c/0xd4) from [<c00cd964>]
(do_sync_write+0xb4/0x100)
Mar 22 13:13:51 debian kernel: [18673.320425] [<c00cd964>]
(do_sync_write+0xb4/0x100) from [<c00ce5c0>] (vfs_write+0xac/0x1a0)
Mar 22 13:13:51 debian kernel: [18673.328900] [<c00ce5c0>]
(vfs_write+0xac/0x1a0) from [<c00ce708>] (sys_pwrite64+0x54/0x78)
Mar 22 13:13:51 debian kernel: [18673.337200] [<c00ce708>]
(sys_pwrite64+0x54/0x78) from [<c0027ea0>] (ret_fast_syscall+0x0/0x28)
Mar 22 13:13:51 debian kernel: [18673.345936] Code: e1a01000 e59f000c
eb0a3037 e3a03000 (e5833000)
Mar 22 13:13:51 debian kernel: [18673.352225] ---[ end trace
fe18c27702b340b6 ]---
</log-snippet>
Note: values for "last sysfs", "PC" and "LR" differ from crash to
crash. The error always starts with a "NULL pointer" and the Oops code
is always 805 though.
Any help on this matter is greatly appreciated!
Berto
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