Hi,
I'm writing you to highlight a possible bug affecting the NFSv3 kernel
module.
I'm not experienced in using it, and the issue is really difficult to
reproduce, but it happened twice in a day and can be quite annoying for
the user.
So, here the description:
- a multi core system (I have an intel i5 cpu so, 4 cores)
(that's my guess, I think it could be a concurrency issue)
- a remote nfs mount
- several processes that are copying and/or moving lots of GiBs
of data to the NFS storage
Suddenly the system becomes unresponsive for several minutes
(like frozen: no mouse, no keyboard, no screen updates of any sort).
[But when every nfs operation is successfully completed
everything is restored correctly]
Hints to debug it:
- at the end of the mail I put the kernel log
in /var/log/messages
- In both cases when the system hanged, the iowait of the system
was nearly at 3 full cores, and the running queue of the processes where
over 5 (so, more running processes than cpu cores) (monitored via munin)
It happened on the following versions:
- 2.6.32
- 3.1.0
on an AMD64 architecture.
Hope it could help.
Regards
Gabriele Messineo
PS: the kernel log:
Nov 25 11:35:07 vaio kernel: [10786.492648] ls D
ffff880117c12f40 0 5152 5103 0x00000000
Nov 25 11:35:07 vaio kernel: [10786.492652] ffff88002f8e48f0
0000000000000082 ffff88010fe79000 ffff88009fdce240
Nov 25 11:35:07 vaio kernel: [10786.492656] 0000000000012f40
ffff88001a3fdfd8 ffff88001a3fdfd8 ffff88002f8e48f0
Nov 25 11:35:07 vaio kernel: [10786.492659] ffffffff81013255
ffffffff810654c7 ffff880026e5b130 ffff880117c13788
Nov 25 11:35:07 vaio kernel: [10786.492662] Call Trace:
Nov 25 11:35:07 vaio kernel: [10786.492670] [<ffffffff81013255>] ?
read_tsc+0x5/0x14
Nov 25 11:35:07 vaio kernel: [10786.492675] [<ffffffff810654c7>] ?
timekeeping_get_ns+0xd/0x2a
Nov 25 11:35:07 vaio kernel: [10786.492679] [<ffffffff810afcdd>] ?
lock_page+0x20/0x20
Nov 25 11:35:07 vaio kernel: [10786.492684] [<ffffffff8132c284>] ?
io_schedule+0x59/0x71
Nov 25 11:35:07 vaio kernel: [10786.492686] [<ffffffff810afce3>] ?
sleep_on_page+0x6/0xa
Nov 25 11:35:07 vaio kernel: [10786.492688] [<ffffffff8132c6c7>] ?
__wait_on_bit+0x3e/0x71
Nov 25 11:35:07 vaio kernel: [10786.492690] [<ffffffff810afe32>] ?
wait_on_page_bit+0x6e/0x73
Nov 25 11:35:07 vaio kernel: [10786.492694] [<ffffffff8105ec41>] ?
autoremove_wake_function+0x2a/0x2a
Nov 25 11:35:07 vaio kernel: [10786.492697] [<ffffffff810aff0a>] ?
filemap_fdatawait_range+0x74/0x139
Nov 25 11:35:07 vaio kernel: [10786.492700] [<ffffffff810b1722>] ?
filemap_write_and_wait+0x24/0x30
Nov 25 11:35:07 vaio kernel: [10786.492711] [<ffffffffa0741c32>] ?
nfs_getattr+0x32/0xac [nfs]
Nov 25 11:35:07 vaio kernel: [10786.492715] [<ffffffff810f72a4>] ?
vfs_fstatat+0x48/0x60
Nov 25 11:35:07 vaio kernel: [10786.492717] [<ffffffff810f73e3>] ?
sys_newlstat+0x12/0x2b
Nov 25 11:35:07 vaio kernel: [10786.492721] [<ffffffff81103a21>] ? dput
+0x52/0xee
Nov 25 11:35:07 vaio kernel: [10786.492730] [<ffffffffa0751227>] ?
nfs3_proc_getacl+0x34b/0x34b [nfs]
Nov 25 11:35:07 vaio kernel: [10786.492734] [<ffffffff811095f4>] ?
mntput_no_expire+0x1e/0xc9
Nov 25 11:35:07 vaio kernel: [10786.492737] [<ffffffff8110cc4b>] ?
sys_lgetxattr+0x4e/0x5c
Nov 25 11:35:07 vaio kernel: [10786.492741] [<ffffffff813322d2>] ?
system_call_fastpath+0x16/0x1b
Nov 25 11:35:08 vaio rsyslogd-2177: imuxsock lost 5530 messages from pid
8786 due to rate-limiting
Nov 25 11:35:08 vaio rsyslogd-2177: imuxsock begins to drop messages
from pid 8786 due to rate-limiting
Nov 25 11:37:07 vaio kernel: [10906.292897] ls D
ffff880117c12f40 0 5152 5103 0x00000000
Nov 25 11:37:07 vaio kernel: [10906.292903] ffff88002f8e48f0
0000000000000082 ffff88010fe79000 ffff88009fdce240
Nov 25 11:37:07 vaio kernel: [10906.292908] 0000000000012f40
ffff88001a3fdfd8 ffff88001a3fdfd8 ffff88002f8e48f0
Nov 25 11:37:07 vaio kernel: [10906.292912] ffffffff81013255
ffffffff810654c7 ffff880026e5b130 ffff880117c13788
Nov 25 11:37:07 vaio kernel: [10906.292916] Call Trace:
Nov 25 11:37:07 vaio kernel: [10906.292926] [<ffffffff81013255>] ?
read_tsc+0x5/0x14
Nov 25 11:37:07 vaio kernel: [10906.292932] [<ffffffff810654c7>] ?
timekeeping_get_ns+0xd/0x2a
Nov 25 11:37:07 vaio kernel: [10906.292937] [<ffffffff810afcdd>] ?
lock_page+0x20/0x20
Nov 25 11:37:07 vaio kernel: [10906.292942] [<ffffffff8132c284>] ?
io_schedule+0x59/0x71
Nov 25 11:37:07 vaio kernel: [10906.292945] [<ffffffff810afce3>] ?
sleep_on_page+0x6/0xa
Nov 25 11:37:07 vaio kernel: [10906.292949] [<ffffffff8132c6c7>] ?
__wait_on_bit+0x3e/0x71
Nov 25 11:37:07 vaio kernel: [10906.292952] [<ffffffff810afe32>] ?
wait_on_page_bit+0x6e/0x73
Nov 25 11:37:07 vaio kernel: [10906.292957] [<ffffffff8105ec41>] ?
autoremove_wake_function+0x2a/0x2a
Nov 25 11:37:07 vaio kernel: [10906.292960] [<ffffffff810aff0a>] ?
filemap_fdatawait_range+0x74/0x139
Nov 25 11:37:07 vaio kernel: [10906.292964] [<ffffffff810b1722>] ?
filemap_write_and_wait+0x24/0x30
Nov 25 11:37:07 vaio kernel: [10906.292978] [<ffffffffa0741c32>] ?
nfs_getattr+0x32/0xac [nfs]
Nov 25 11:37:07 vaio kernel: [10906.292983] [<ffffffff810f72a4>] ?
vfs_fstatat+0x48/0x60
Nov 25 11:37:07 vaio kernel: [10906.292986] [<ffffffff810f73e3>] ?
sys_newlstat+0x12/0x2b
Nov 25 11:37:07 vaio kernel: [10906.292989] [<ffffffff81103a21>] ? dput
+0x52/0xee
Nov 25 11:37:07 vaio kernel: [10906.293002] [<ffffffffa0751227>] ?
nfs3_proc_getacl+0x34b/0x34b [nfs]
Nov 25 11:37:07 vaio kernel: [10906.293006] [<ffffffff811095f4>] ?
mntput_no_expire+0x1e/0xc9
Nov 25 11:37:07 vaio kernel: [10906.293010] [<ffffffff8110cc4b>] ?
sys_lgetxattr+0x4e/0x5c
Nov 25 11:37:07 vaio kernel: [10906.293016] [<ffffffff813322d2>] ?
system_call_fastpath+0x16/0x1b
Nov 25 11:39:07 vaio kernel: [11026.093402] ls D
ffff880117c12f40 0 5152 5103 0x00000000
Nov 25 11:39:07 vaio kernel: [11026.093408] ffff88002f8e48f0
0000000000000082 ffff88010fe79000 ffff88009fdce240
Nov 25 11:39:07 vaio kernel: [11026.093414] 0000000000012f40
ffff88001a3fdfd8 ffff88001a3fdfd8 ffff88002f8e48f0
Nov 25 11:39:07 vaio kernel: [11026.093420] ffffffff81013255
ffffffff810654c7 ffff880026e5b130 ffff880117c13788
Nov 25 11:39:07 vaio kernel: [11026.093425] Call Trace:
Nov 25 11:39:07 vaio kernel: [11026.093436] [<ffffffff81013255>] ?
read_tsc+0x5/0x14
Nov 25 11:39:07 vaio kernel: [11026.093444] [<ffffffff810654c7>] ?
timekeeping_get_ns+0xd/0x2a
Nov 25 11:39:07 vaio kernel: [11026.093449] [<ffffffff810afcdd>] ?
lock_page+0x20/0x20
Nov 25 11:39:07 vaio kernel: [11026.093456] [<ffffffff8132c284>] ?
io_schedule+0x59/0x71
Nov 25 11:39:07 vaio kernel: [11026.093460] [<ffffffff810afce3>] ?
sleep_on_page+0x6/0xa
Nov 25 11:39:07 vaio kernel: [11026.093464] [<ffffffff8132c6c7>] ?
__wait_on_bit+0x3e/0x71
Nov 25 11:39:07 vaio kernel: [11026.093468] [<ffffffff810afe32>] ?
wait_on_page_bit+0x6e/0x73
Nov 25 11:39:07 vaio kernel: [11026.093474] [<ffffffff8105ec41>] ?
autoremove_wake_function+0x2a/0x2a
Nov 25 11:39:07 vaio kernel: [11026.093478] [<ffffffff810aff0a>] ?
filemap_fdatawait_range+0x74/0x139
Nov 25 11:39:07 vaio kernel: [11026.093483] [<ffffffff810b1722>] ?
filemap_write_and_wait+0x24/0x30
Nov 25 11:39:07 vaio kernel: [11026.093499] [<ffffffffa0741c32>] ?
nfs_getattr+0x32/0xac [nfs]
Nov 25 11:39:07 vaio kernel: [11026.093505] [<ffffffff810f72a4>] ?
vfs_fstatat+0x48/0x60
Nov 25 11:39:07 vaio kernel: [11026.093509] [<ffffffff810f73e3>] ?
sys_newlstat+0x12/0x2b
Nov 25 11:39:07 vaio kernel: [11026.093513] [<ffffffff81103a21>] ? dput
+0x52/0xee
Nov 25 11:39:07 vaio kernel: [11026.093528] [<ffffffffa0751227>] ?
nfs3_proc_getacl+0x34b/0x34b [nfs]
Nov 25 11:39:07 vaio kernel: [11026.093533] [<ffffffff811095f4>] ?
mntput_no_expire+0x1e/0xc9
Nov 25 11:39:07 vaio kernel: [11026.093539] [<ffffffff8110cc4b>] ?
sys_lgetxattr+0x4e/0x5c
Nov 25 11:39:07 vaio kernel: [11026.093546] [<ffffffff813322d2>] ?
system_call_fastpath+0x16/0x1b
Nov 25 11:39:27 vaio kernel: [11046.679054] nfs: server 192.168.1.5 not
responding, still trying
Nov 25 11:40:09 vaio rsyslogd-2177: imuxsock lost 5530 messages from pid
8786 due to rate-limiting
Nov 25 11:40:09 vaio rsyslogd-2177: imuxsock begins to drop messages
from pid 8786 due to rate-limiting
Nov 25 11:41:07 vaio kernel: [11145.893886] ls D
ffff880117c12f40 0 5152 5103 0x00000000
Nov 25 11:41:07 vaio kernel: [11145.893893] ffff88002f8e48f0
0000000000000082 ffff88010fe79000 ffff88009fdce240
Nov 25 11:41:07 vaio kernel: [11145.893900] 0000000000012f40
ffff88001a3fdfd8 ffff88001a3fdfd8 ffff88002f8e48f0
Nov 25 11:41:07 vaio kernel: [11145.893906] ffffffff81013255
ffffffff810654c7 ffff880026e5b130 ffff880117c13788
Nov 25 11:41:07 vaio kernel: [11145.893912] Call Trace:
Nov 25 11:41:07 vaio kernel: [11145.893924] [<ffffffff81013255>] ?
read_tsc+0x5/0x14
Nov 25 11:41:07 vaio kernel: [11145.893931] [<ffffffff810654c7>] ?
timekeeping_get_ns+0xd/0x2a
Nov 25 11:41:07 vaio kernel: [11145.893937] [<ffffffff810afcdd>] ?
lock_page+0x20/0x20
Nov 25 11:41:07 vaio kernel: [11145.893944] [<ffffffff8132c284>] ?
io_schedule+0x59/0x71
Nov 25 11:41:07 vaio kernel: [11145.893948] [<ffffffff810afce3>] ?
sleep_on_page+0x6/0xa
Nov 25 11:41:07 vaio kernel: [11145.893953] [<ffffffff8132c6c7>] ?
__wait_on_bit+0x3e/0x71
Nov 25 11:41:07 vaio kernel: [11145.893957] [<ffffffff810afe32>] ?
wait_on_page_bit+0x6e/0x73
Nov 25 11:41:07 vaio kernel: [11145.893964] [<ffffffff8105ec41>] ?
autoremove_wake_function+0x2a/0x2a
Nov 25 11:41:07 vaio kernel: [11145.893969] [<ffffffff810aff0a>] ?
filemap_fdatawait_range+0x74/0x139
Nov 25 11:41:07 vaio kernel: [11145.893974] [<ffffffff810b1722>] ?
filemap_write_and_wait+0x24/0x30
Nov 25 11:41:07 vaio kernel: [11145.893990] [<ffffffffa0741c32>] ?
nfs_getattr+0x32/0xac [nfs]
Nov 25 11:41:07 vaio kernel: [11145.893996] [<ffffffff810f72a4>] ?
vfs_fstatat+0x48/0x60
Nov 25 11:41:07 vaio kernel: [11145.894000] [<ffffffff810f73e3>] ?
sys_newlstat+0x12/0x2b
Nov 25 11:41:07 vaio kernel: [11145.894005] [<ffffffff81103a21>] ? dput
+0x52/0xee
Nov 25 11:41:07 vaio kernel: [11145.894021] [<ffffffffa0751227>] ?
nfs3_proc_getacl+0x34b/0x34b [nfs]
Nov 25 11:41:07 vaio kernel: [11145.894027] [<ffffffff811095f4>] ?
mntput_no_expire+0x1e/0xc9
Nov 25 11:41:07 vaio kernel: [11145.894032] [<ffffffff8110cc4b>] ?
sys_lgetxattr+0x4e/0x5c
Nov 25 11:41:07 vaio kernel: [11145.894038] [<ffffffff813322d2>] ?
system_call_fastpath+0x16/0x1b
Nov 25 11:43:05 vaio kernel: [11263.722526] nfs: server 192.168.1.5 OK
Nov 25 11:43:07 vaio kernel: [11265.694332] ls D
ffff880117c12f40 0 5152 5103 0x00000000
Nov 25 11:43:07 vaio kernel: [11265.694338] ffff88002f8e48f0
0000000000000082 ffff88010fe79000 ffff88009fdce240
Nov 25 11:43:07 vaio kernel: [11265.694344] 0000000000012f40
ffff88001a3fdfd8 ffff88001a3fdfd8 ffff88002f8e48f0
Nov 25 11:43:07 vaio kernel: [11265.694350] ffffffff81013255
ffffffff810654c7 ffff880026e5b130 ffff880117c13788
Nov 25 11:43:07 vaio kernel: [11265.694355] Call Trace:
Nov 25 11:43:07 vaio kernel: [11265.694366] [<ffffffff81013255>] ?
read_tsc+0x5/0x14
Nov 25 11:43:07 vaio kernel: [11265.694373] [<ffffffff810654c7>] ?
timekeeping_get_ns+0xd/0x2a
Nov 25 11:43:07 vaio kernel: [11265.694378] [<ffffffff810afcdd>] ?
lock_page+0x20/0x20
Nov 25 11:43:07 vaio kernel: [11265.694385] [<ffffffff8132c284>] ?
io_schedule+0x59/0x71
Nov 25 11:43:07 vaio kernel: [11265.694389] [<ffffffff810afce3>] ?
sleep_on_page+0x6/0xa
Nov 25 11:43:07 vaio kernel: [11265.694393] [<ffffffff8132c6c7>] ?
__wait_on_bit+0x3e/0x71
Nov 25 11:43:07 vaio kernel: [11265.694397] [<ffffffff810afe32>] ?
wait_on_page_bit+0x6e/0x73
Nov 25 11:43:07 vaio kernel: [11265.694403] [<ffffffff8105ec41>] ?
autoremove_wake_function+0x2a/0x2a
Nov 25 11:43:07 vaio kernel: [11265.694408] [<ffffffff810aff0a>] ?
filemap_fdatawait_range+0x74/0x139
Nov 25 11:43:07 vaio kernel: [11265.694413] [<ffffffff810b1722>] ?
filemap_write_and_wait+0x24/0x30
Nov 25 11:43:07 vaio kernel: [11265.694429] [<ffffffffa0741c32>] ?
nfs_getattr+0x32/0xac [nfs]
Nov 25 11:43:07 vaio kernel: [11265.694434] [<ffffffff810f72a4>] ?
vfs_fstatat+0x48/0x60
Nov 25 11:43:07 vaio kernel: [11265.694438] [<ffffffff810f73e3>] ?
sys_newlstat+0x12/0x2b
Nov 25 11:43:07 vaio kernel: [11265.694443] [<ffffffff81103a21>] ? dput
+0x52/0xee
Nov 25 11:43:07 vaio kernel: [11265.694459] [<ffffffffa0751227>] ?
nfs3_proc_getacl+0x34b/0x34b [nfs]
Nov 25 11:43:07 vaio kernel: [11265.694464] [<ffffffff811095f4>] ?
mntput_no_expire+0x1e/0xc9
Nov 25 11:43:07 vaio kernel: [11265.694470] [<ffffffff8110cc4b>] ?
sys_lgetxattr+0x4e/0x5c
Nov 25 11:43:07 vaio kernel: [11265.694477] [<ffffffff813322d2>] ?
system_call_fastpath+0x16/0x1b
Nov 25 11:45:07 vaio kernel: [11385.494800] ls D
ffff880117c12f40 0 5152 5103 0x00000000
Nov 25 11:45:07 vaio kernel: [11385.494805] ffff88002f8e48f0
0000000000000082 ffff88010fe79000 ffff88009fdce240
Nov 25 11:45:07 vaio kernel: [11385.494810] 0000000000012f40
ffff88001a3fdfd8 ffff88001a3fdfd8 ffff88002f8e48f0
Nov 25 11:45:07 vaio kernel: [11385.494814] ffffffff81013255
ffffffff810654c7 ffff880026e5b130 ffff880117c13788
Nov 25 11:45:07 vaio kernel: [11385.494819] Call Trace:
Nov 25 11:45:07 vaio kernel: [11385.494828] [<ffffffff81013255>] ?
read_tsc+0x5/0x14
Nov 25 11:45:07 vaio kernel: [11385.494834] [<ffffffff810654c7>] ?
timekeeping_get_ns+0xd/0x2a
Nov 25 11:45:07 vaio kernel: [11385.494839] [<ffffffff810afcdd>] ?
lock_page+0x20/0x20
Nov 25 11:45:07 vaio kernel: [11385.494845] [<ffffffff8132c284>] ?
io_schedule+0x59/0x71
Nov 25 11:45:07 vaio kernel: [11385.494848] [<ffffffff810afce3>] ?
sleep_on_page+0x6/0xa
Nov 25 11:45:07 vaio kernel: [11385.494851] [<ffffffff8132c6c7>] ?
__wait_on_bit+0x3e/0x71
Nov 25 11:45:07 vaio kernel: [11385.494854] [<ffffffff810afe32>] ?
wait_on_page_bit+0x6e/0x73
Nov 25 11:45:07 vaio kernel: [11385.494859] [<ffffffff8105ec41>] ?
autoremove_wake_function+0x2a/0x2a
Nov 25 11:45:07 vaio kernel: [11385.494862] [<ffffffff810aff0a>] ?
filemap_fdatawait_range+0x74/0x139
Nov 25 11:45:07 vaio kernel: [11385.494867] [<ffffffff810b1722>] ?
filemap_write_and_wait+0x24/0x30
Nov 25 11:45:07 vaio kernel: [11385.494881] [<ffffffffa0741c32>] ?
nfs_getattr+0x32/0xac [nfs]
Nov 25 11:45:07 vaio kernel: [11385.494885] [<ffffffff810f72a4>] ?
vfs_fstatat+0x48/0x60
Nov 25 11:45:07 vaio kernel: [11385.494888] [<ffffffff810f73e3>] ?
sys_newlstat+0x12/0x2b
Nov 25 11:45:07 vaio kernel: [11385.494892] [<ffffffff81103a21>] ? dput
+0x52/0xee
Nov 25 11:45:07 vaio kernel: [11385.494903] [<ffffffffa0751227>] ?
nfs3_proc_getacl+0x34b/0x34b [nfs]
Nov 25 11:45:07 vaio kernel: [11385.494908] [<ffffffff811095f4>] ?
mntput_no_expire+0x1e/0xc9
Nov 25 11:45:07 vaio kernel: [11385.494912] [<ffffffff8110cc4b>] ?
sys_lgetxattr+0x4e/0x5c
Nov 25 11:45:07 vaio kernel: [11385.494918] [<ffffffff813322d2>] ?
system_call_fastpath+0x16/0x1b
Nov 25 11:45:08 vaio rsyslogd-2177: imuxsock lost 5530 messages from pid
8786 due to rate-limiting
Nov 25 11:45:08 vaio rsyslogd-2177: imuxsock begins to drop messages
from pid 8786 due to rate-limiting
Nov 25 11:47:07 vaio kernel: [11505.295246] ls D
ffff880117c12f40 0 5152 5103 0x00000000
Nov 25 11:47:07 vaio kernel: [11505.295252] ffff88002f8e48f0
0000000000000082 ffff88010fe79000 ffff88009fdce240
Nov 25 11:47:07 vaio kernel: [11505.295259] 0000000000012f40
ffff88001a3fdfd8 ffff88001a3fdfd8 ffff88002f8e48f0
Nov 25 11:47:07 vaio kernel: [11505.295264] ffffffff81013255
ffffffff810654c7 ffff880026e5b130 ffff880117c13788
Nov 25 11:47:07 vaio kernel: [11505.295270] Call Trace:
Nov 25 11:47:07 vaio kernel: [11505.295280] [<ffffffff81013255>] ?
read_tsc+0x5/0x14
Nov 25 11:47:07 vaio kernel: [11505.295288] [<ffffffff810654c7>] ?
timekeeping_get_ns+0xd/0x2a
Nov 25 11:47:07 vaio kernel: [11505.295293] [<ffffffff810afcdd>] ?
lock_page+0x20/0x20
Nov 25 11:47:07 vaio kernel: [11505.295300] [<ffffffff8132c284>] ?
io_schedule+0x59/0x71
Nov 25 11:47:07 vaio kernel: [11505.295303] [<ffffffff810afce3>] ?
sleep_on_page+0x6/0xa
Nov 25 11:47:07 vaio kernel: [11505.295308] [<ffffffff8132c6c7>] ?
__wait_on_bit+0x3e/0x71
Nov 25 11:47:07 vaio kernel: [11505.295312] [<ffffffff810afe32>] ?
wait_on_page_bit+0x6e/0x73
Nov 25 11:47:07 vaio kernel: [11505.295318] [<ffffffff8105ec41>] ?
autoremove_wake_function+0x2a/0x2a
Nov 25 11:47:07 vaio kernel: [11505.295322] [<ffffffff810aff0a>] ?
filemap_fdatawait_range+0x74/0x139
Nov 25 11:47:07 vaio kernel: [11505.295327] [<ffffffff810b1722>] ?
filemap_write_and_wait+0x24/0x30
Nov 25 11:47:07 vaio kernel: [11505.295343] [<ffffffffa0741c32>] ?
nfs_getattr+0x32/0xac [nfs]
Nov 25 11:47:07 vaio kernel: [11505.295349] [<ffffffff810f72a4>] ?
vfs_fstatat+0x48/0x60
Nov 25 11:47:07 vaio kernel: [11505.295352] [<ffffffff810f73e3>] ?
sys_newlstat+0x12/0x2b
Nov 25 11:47:07 vaio kernel: [11505.295358] [<ffffffff81103a21>] ? dput
+0x52/0xee
Nov 25 11:47:07 vaio kernel: [11505.295373] [<ffffffffa0751227>] ?
nfs3_proc_getacl+0x34b/0x34b [nfs]
Nov 25 11:47:07 vaio kernel: [11505.295379] [<ffffffff811095f4>] ?
mntput_no_expire+0x1e/0xc9
Nov 25 11:47:07 vaio kernel: [11505.295385] [<ffffffff8110cc4b>] ?
sys_lgetxattr+0x4e/0x5c
Nov 25 11:47:07 vaio kernel: [11505.295392] [<ffffffff813322d2>] ?
system_call_fastpath+0x16/0x1b
Nov 25 11:49:07 vaio kernel: [11625.095732] ls D
ffff880117c12f40 0 5152 5103 0x00000000
Nov 25 11:49:07 vaio kernel: [11625.095739] ffff88002f8e48f0
0000000000000082 ffff88010fe79000 ffff88009fdce240
Nov 25 11:49:07 vaio kernel: [11625.095747] 0000000000012f40
ffff88001a3fdfd8 ffff88001a3fdfd8 ffff88002f8e48f0
Nov 25 11:49:07 vaio kernel: [11625.095753] ffffffff81013255
ffffffff810654c7 ffff880026e5b130 ffff880117c13788
Nov 25 11:49:07 vaio kernel: [11625.095760] Call Trace:
Nov 25 11:49:07 vaio kernel: [11625.095772] [<ffffffff81013255>] ?
read_tsc+0x5/0x14
Nov 25 11:49:07 vaio kernel: [11625.095780] [<ffffffff810654c7>] ?
timekeeping_get_ns+0xd/0x2a
Nov 25 11:49:07 vaio kernel: [11625.095789] [<ffffffff810afcdd>] ?
lock_page+0x20/0x20
Nov 25 11:49:07 vaio kernel: [11625.095794] [<ffffffff8132c284>] ?
io_schedule+0x59/0x71
Nov 25 11:49:07 vaio kernel: [11625.095796] [<ffffffff810afce3>] ?
sleep_on_page+0x6/0xa
Nov 25 11:49:07 vaio kernel: [11625.095798] [<ffffffff8132c6c7>] ?
__wait_on_bit+0x3e/0x71
Nov 25 11:49:07 vaio kernel: [11625.095801] [<ffffffff810afe32>] ?
wait_on_page_bit+0x6e/0x73
Nov 25 11:49:07 vaio kernel: [11625.095805] [<ffffffff8105ec41>] ?
autoremove_wake_function+0x2a/0x2a
Nov 25 11:49:07 vaio kernel: [11625.095807] [<ffffffff810aff0a>] ?
filemap_fdatawait_range+0x74/0x139
Nov 25 11:49:07 vaio kernel: [11625.095810] [<ffffffff810b1722>] ?
filemap_write_and_wait+0x24/0x30
Nov 25 11:49:07 vaio kernel: [11625.095821] [<ffffffffa0741c32>] ?
nfs_getattr+0x32/0xac [nfs]
Nov 25 11:49:07 vaio kernel: [11625.095825] [<ffffffff810f72a4>] ?
vfs_fstatat+0x48/0x60
Nov 25 11:49:07 vaio kernel: [11625.095827] [<ffffffff810f73e3>] ?
sys_newlstat+0x12/0x2b
Nov 25 11:49:07 vaio kernel: [11625.095830] [<ffffffff81103a21>] ? dput
+0x52/0xee
Nov 25 11:49:07 vaio kernel: [11625.095838] [<ffffffffa0751227>] ?
nfs3_proc_getacl+0x34b/0x34b [nfs]
Nov 25 11:49:07 vaio kernel: [11625.095841] [<ffffffff811095f4>] ?
mntput_no_expire+0x1e/0xc9
Nov 25 11:49:07 vaio kernel: [11625.095844] [<ffffffff8110cc4b>] ?
sys_lgetxattr+0x4e/0x5c
Nov 25 11:49:07 vaio kernel: [11625.095849] [<ffffffff813322d2>] ?
system_call_fastpath+0x16/0x1b
Nov 25 11:50:07 vaio rsyslogd-2177: imuxsock lost 5530 messages from pid
8786 due to rate-limiting
Nov 25 11:50:07 vaio rsyslogd-2177: imuxsock begins to drop messages
from pid 8786 due to rate-limiting
Nov 25 11:55:07 vaio kernel: [11984.497133] flush-0:21 D
ffff880117c12f40 0 694 2 0x00000000
Nov 25 11:55:07 vaio kernel: [11984.497140] ffff8800460c8200
0000000000000046 0000000000000001 ffff880054a0c240
Nov 25 11:55:07 vaio kernel: [11984.497148] 0000000000012f40
ffff88006f2b1fd8 ffff88006f2b1fd8 ffff8800460c8200
Nov 25 11:55:07 vaio kernel: [11984.497155] ffff88006f2b1e28
ffffffff8107009d 0000000000000246 ffff88006f2b1d38
Nov 25 11:55:07 vaio kernel: [11984.497162] Call Trace:
Nov 25 11:55:07 vaio kernel: [11984.497175] [<ffffffff8107009d>] ?
arch_local_irq_save+0x11/0x17
Nov 25 11:55:07 vaio kernel: [11984.497183] [<ffffffff811056ca>] ?
inode_owner_or_capable+0x36/0x36
Nov 25 11:55:07 vaio kernel: [11984.497191] [<ffffffff811056d0>] ?
inode_wait+0x6/0xa
Nov 25 11:55:07 vaio kernel: [11984.497196] [<ffffffff8132c6c7>] ?
__wait_on_bit+0x3e/0x71
Nov 25 11:55:07 vaio kernel: [11984.497201] [<ffffffff8110f83b>] ?
inode_wait_for_writeback+0x9b/0xc3
Nov 25 11:55:07 vaio kernel: [11984.497205] [<ffffffff8105ec41>] ?
autoremove_wake_function+0x2a/0x2a
Nov 25 11:55:07 vaio kernel: [11984.497208] [<ffffffff8111115b>] ?
wb_writeback+0x1ea/0x214
Nov 25 11:55:07 vaio kernel: [11984.497210] [<ffffffff8111151f>] ?
wb_do_writeback+0x13e/0x19d
Nov 25 11:55:07 vaio kernel: [11984.497213] [<ffffffff81111602>] ?
bdi_writeback_thread+0x84/0x1e5
Nov 25 11:55:07 vaio kernel: [11984.497215] [<ffffffff8111157e>] ?
wb_do_writeback+0x19d/0x19d
Nov 25 11:55:07 vaio kernel: [11984.497217] [<ffffffff8105e5d1>] ?
kthread+0x76/0x7e
Nov 25 11:55:07 vaio kernel: [11984.497223] [<ffffffff81334434>] ?
kernel_thread_helper+0x4/0x10
Nov 25 11:55:07 vaio kernel: [11984.497225] [<ffffffff8105e55b>] ?
kthread_worker_fn+0x139/0x139
Nov 25 11:55:07 vaio kernel: [11984.497228] [<ffffffff81334430>] ?
gs_change+0x13/0x13
Nov 25 11:55:07 vaio kernel: [11984.497234] mv D
ffff880117c12f40 0 2644 1981 0x00000000
Nov 25 11:55:07 vaio kernel: [11984.497237] ffff88003d7a5160
0000000000000082 ffff88006f3ba080 ffff880054a0c240
Nov 25 11:55:07 vaio kernel: [11984.497240] 0000000000012f40
ffff880096ec9fd8 ffff880096ec9fd8 ffff88003d7a5160
Nov 25 11:55:07 vaio kernel: [11984.497243] ffffffff81013255
ffffffff810654c7 ffff88011325aa60 ffff880117c13788
Nov 25 11:55:07 vaio kernel: [11984.497246] Call Trace:
Nov 25 11:55:07 vaio kernel: [11984.497250] [<ffffffff81013255>] ?
read_tsc+0x5/0x14
Nov 25 11:55:07 vaio kernel: [11984.497255] [<ffffffff810654c7>] ?
timekeeping_get_ns+0xd/0x2a
Nov 25 11:55:07 vaio kernel: [11984.497259] [<ffffffff810afcdd>] ?
lock_page+0x20/0x20
Nov 25 11:55:07 vaio kernel: [11984.497261] [<ffffffff8132c284>] ?
io_schedule+0x59/0x71
Nov 25 11:55:07 vaio kernel: [11984.497263] [<ffffffff810afce3>] ?
sleep_on_page+0x6/0xa
Nov 25 11:55:07 vaio kernel: [11984.497265] [<ffffffff8132c6c7>] ?
__wait_on_bit+0x3e/0x71
Nov 25 11:55:07 vaio kernel: [11984.497267] [<ffffffff810afe32>] ?
wait_on_page_bit+0x6e/0x73
Nov 25 11:55:07 vaio kernel: [11984.497270] [<ffffffff8105ec41>] ?
autoremove_wake_function+0x2a/0x2a
Nov 25 11:55:07 vaio kernel: [11984.497272] [<ffffffff810aff0a>] ?
filemap_fdatawait_range+0x74/0x139
Nov 25 11:55:07 vaio kernel: [11984.497275] [<ffffffff811109c0>] ?
writeback_single_inode+0x137/0x2d3
Nov 25 11:55:07 vaio kernel: [11984.497278] [<ffffffff81110b98>] ?
sync_inode+0x3c/0x4f
Nov 25 11:55:07 vaio kernel: [11984.497291] [<ffffffffa074ca7d>] ?
nfs_wb_all+0x39/0x3e [nfs]
Nov 25 11:55:07 vaio kernel: [11984.497298] [<ffffffffa0741d37>] ?
nfs_setattr+0x8b/0xf3 [nfs]
Nov 25 11:55:07 vaio kernel: [11984.497301] [<ffffffff8110725e>] ?
notify_change+0x18e/0x256
Nov 25 11:55:07 vaio kernel: [11984.497304] [<ffffffff8103538b>] ?
should_resched+0x5/0x23
Nov 25 11:55:07 vaio kernel: [11984.497307] [<ffffffff81114498>] ?
utimes_common+0x10c/0x135
Nov 25 11:55:07 vaio kernel: [11984.497312] [<ffffffff8100d01d>] ?
paravirt_write_msr+0xb/0xe
Nov 25 11:55:07 vaio kernel: [11984.497314] [<ffffffff8111454b>] ?
do_utimes+0x8a/0xd6
Nov 25 11:55:07 vaio kernel: [11984.497319] [<ffffffff810f3e70>] ?
vfs_read+0x9f/0xe6
Nov 25 11:55:07 vaio kernel: [11984.497322] [<ffffffff8103538b>] ?
should_resched+0x5/0x23
Nov 25 11:55:07 vaio kernel: [11984.497324] [<ffffffff81114682>] ?
sys_utimensat+0x6e/0x77
Nov 25 11:55:07 vaio kernel: [11984.497327] [<ffffffff813322d2>] ?
system_call_fastpath+0x16/0x1b
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