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Old 05-11-2010, 06:10 PM
Georgios Magklaras
 
Default kernel 2.6.18-194.3.1 x86_64 and task hungs

I have an ordinary box (PowerEdge 2950 plus PERC 6/E controller) and I
have moved to the latest RHEL 5.5 kernel. After the move, it seems that
I have certain tasks hunging in the box. In one case the system died and
required a powercycle.


That does not appear to be the case when I revert the box to the
previous kernel (2.6.18-194.el5). Before I look at the storage or other
firmware issues, can I ask if anyone has seen this behaviour/symptoms?


Cheers,
GM

From my /var/log/messages:

May 11 11:40:17 cnkeeper kernel: nfsd D 0000000000000040 0
5694 1 5695 5693 (L-TLB)
May 11 11:40:17 cnkeeper kernel: ffff810fe0297970 0000000000000046
0000000000000286 ffffffff8003da8d
May 11 11:40:17 cnkeeper kernel: ffff810137ddc000 000000000000000a
ffff810fe02817a0 ffff810fdaecd0c0
May 11 11:40:17 cnkeeper kernel: 00002ec3045c45bc 0000000000000b01
ffff810fe0281988 00000003d68e8410

May 11 11:40:17 cnkeeper kernel: Call Trace:
May 11 11:40:17 cnkeeper kernel: [<ffffffff8003da8d>]
lock_timer_base+0x1b/0x3c
May 11 11:40:17 cnkeeper kernel: [<ffffffff887e3e71>]
:ip_conntrack:__ip_ct_refresh_acct+0x10f/0x152

May 11 11:40:17 cnkeeper kernel: [<ffffffff80033598>] lock_sock+0x79/0xb2
May 11 11:40:17 cnkeeper kernel: [<ffffffff800a0abe>]
autoremove_wake_function+0x0/0x2e
May 11 11:40:17 cnkeeper kernel: [<ffffffff8001d0e8>]
tcp_recvmsg+0x29/0xb2a
May 11 11:40:17 cnkeeper kernel: [<ffffffff8006b011>]
__switch_to+0xfe/0x22f
May 11 11:40:17 cnkeeper kernel: [<ffffffff80031c38>]
sock_common_recvmsg+0x2d/0x43
May 11 11:40:17 cnkeeper kernel: [<ffffffff8003055b>]
sock_recvmsg+0x107/0x15f
May 11 11:40:17 cnkeeper kernel: [<ffffffff800a0abe>]
autoremove_wake_function+0x0/0x2e
May 11 11:40:17 cnkeeper kernel: [<ffffffff80048166>]
__pagevec_release+0x19/0x22
May 11 11:40:17 cnkeeper kernel: [<ffffffff800cb2c3>]
shrink_inactive_list+0x88b/0x8d8
May 11 11:40:17 cnkeeper kernel: [<ffffffff800d00b0>]
page_referenced_one+0x6a/0xfb
May 11 11:40:17 cnkeeper kernel: [<ffffffff8003bfea>]
page_referenced+0x6e/0xe4
May 11 11:40:17 cnkeeper kernel: [<ffffffff80226c1d>]
kernel_recvmsg+0x3b/0x4d
May 11 11:40:17 cnkeeper kernel: [<ffffffff8858dea3>]
:sunrpc:svc_recvfrom+0x6e/0xe0
May 11 11:40:17 cnkeeper kernel: [<ffffffff8858f939>]
:sunrpc:svc_tcp_recvfrom+0x4b0/0x79e
May 11 11:40:17 cnkeeper kernel: [<ffffffff8008c871>]
dequeue_task+0x18/0x37
May 11 11:40:17 cnkeeper kernel: [<ffffffff80062ff8>]
thread_return+0x62/0xfe
May 11 11:40:17 cnkeeper kernel: [<ffffffff8003da8d>]
lock_timer_base+0x1b/0x3c
May 11 11:40:17 cnkeeper kernel: [<ffffffff8004b36f>]
try_to_del_timer_sync+0x7f/0x88
May 11 11:40:17 cnkeeper kernel: [<ffffffff8005bbbb>]
del_timer_sync+0xc/0x16
May 11 11:40:17 cnkeeper kernel: [<ffffffff8858ffd9>]
:sunrpc:svc_recv+0x3b2/0x495
May 11 11:40:17 cnkeeper kernel: [<ffffffff8008d087>]
default_wake_function+0x0/0xe

May 11 11:40:17 cnkeeper kernel: [<ffffffff80064644>] __down_read+0x12/0x92
May 11 11:40:17 cnkeeper kernel: [<ffffffff886cc5a1>] :nfsd:nfsd+0x0/0x2cb
May 11 11:40:17 cnkeeper kernel: [<ffffffff886cc694>] :nfsd:nfsd+0xf3/0x2cb
May 11 11:40:17 cnkeeper kernel: [<ffffffff8005dfb1>] child_rip+0xa/0x11
May 11 11:40:17 cnkeeper kernel: [<ffffffff886cc5a1>] :nfsd:nfsd+0x0/0x2cb
May 11 11:40:17 cnkeeper kernel: [<ffffffff886cc5a1>] :nfsd:nfsd+0x0/0x2cb
May 11 11:40:17 cnkeeper kernel: [<ffffffff8005dfa7>] child_rip+0x0/0x11


May 11 11:55:58 cnkeeper kernel: INFO: task sshd:23317 blocked for more
than 120 seconds.
May 11 11:55:58 cnkeeper kernel: "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 11 11:55:58 cnkeeper kernel: sshd D ffff810fdb2b2de8 0
23317 8256 23382 23214 (NOTLB)
May 11 11:55:58 cnkeeper kernel: ffff81036e9bbc58 0000000000000086
0000000300000000 ffff810137df08d8
May 11 11:55:58 cnkeeper kernel: 0000000000000000 0000000000000001
ffff810a79f320c0 ffff810fd9f04040
May 11 11:55:58 cnkeeper kernel: 00002fa5c52967a1 0000000004e4e1f5
ffff810a79f322a8 000000008000d3ba

May 11 11:55:58 cnkeeper kernel: Call Trace:
May 11 11:55:58 cnkeeper kernel: [<ffffffff80019afe>]
__follow_mount+0x26/0x7f

May 11 11:55:58 cnkeeper kernel: [<ffffffff8000ce97>] do_lookup+0x65/0x1e6
May 11 11:55:58 cnkeeper kernel: [<ffffffff80063c6f>]
__mutex_lock_slowpath+0x60/0x9b
May 11 11:55:58 cnkeeper kernel: [<ffffffff80063cb9>]
.text.lock.mutex+0xf/0x14

May 11 11:55:58 cnkeeper kernel: [<ffffffff8000cec2>] do_lookup+0x90/0x1e6
May 11 11:55:58 cnkeeper kernel: [<ffffffff8000a20d>]
__link_path_walk+0xa01/0xf42
May 11 12:04:23 cnkeeper nrpe[23458]: Connection has taken too long to
establish. Exiting...
May 11 12:05:23 cnkeeper nrpe[23438]: Connection has taken too long to
establish. Exiting...
May 11 12:06:18 cnkeeper kernel: [<ffffffff8000e9e2>]
link_path_walk+0x42/0xb2
May 11 12:06:52 cnkeeper kernel: [<ffffffff8000ccb2>]
do_path_lookup+0x275/0x2f1
May 11 12:06:52 cnkeeper kernel: [<ffffffff8002368a>]
__path_lookup_intent_open+0x56/0x97

May 11 12:06:52 cnkeeper kernel: [<ffffffff8001af23>] open_namei+0x73/0x6d5
May 11 12:06:52 cnkeeper kernel: [<ffffffff80066b88>]
do_page_fault+0x4fe/0x874
May 11 12:06:52 cnkeeper kernel: [<ffffffff800274a4>]
do_filp_open+0x1c/0x38

May 11 12:06:52 cnkeeper kernel: [<ffffffff80019dd1>] do_sys_open+0x44/0xbe
May 11 12:06:52 cnkeeper kernel: [<ffffffff8005d28d>] tracesys+0xd5/0xe0


--
Best regards,
--

George Magklaras BSc (Hons) MPhil RHCE
IT Systems Manager/Senior Systems Engineer
The Biotechnology Center of Oslo
University of Oslo

http://www.biotek.uio.no
http://www.no.embnet.org
http://folk.uio.no/georgios


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