Re: Centos 5.6 Kernel Panics

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]



On 04/04/2012 09:16 AM, Jonathan Alstead wrote:
> Hello,
>
> Recently our dell sc1425 server has been locking up with kernel freezes 
> and required a hard reboot on each occasion. I've looked on the centos 
> forums with limited success - each problem seems slightly different 
> (some failure on high load, some not). Our kernel is 2.6.18-274.17.1.el5 
> and /var/log/messages show the following errors:
>
> Apr  3 12:41:25 sp2 kernel: INFO: task mysqld:15345 blocked for more 
> than 120 seconds.
> Apr  3 12:41:25 sp2 kernel: "echo 0 > 
> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Apr  3 12:41:25 sp2 kernel: mysqld        D 00000CEB  2524 15345  32083 
>          15346 15167 (NOTLB)
> Apr  3 12:41:25 sp2 kernel:        c50c7f54 00000082 bf379c08 00000ceb 
> ca9b1648 f43c6c5c 00000000 00000001
> Apr  3 12:41:25 sp2 kernel:        d9d18000 bf384f01 00000ceb 0000b2f9 
> 00000001 d9d1810c c2013ac4 edc5de40
> Apr  3 12:41:25 sp2 kernel:        08515c98 c6cb37b8 c2014464 c200cc80 
> 00000020 00000000 00000000 00000000
> Apr  3 12:41:25 sp2 kernel: Call Trace:
> Apr  3 12:41:25 sp2 kernel:  [<c0622f16>] 
> rwsem_down_write_failed+0x126/0x141
> Apr  3 12:41:25 sp2 kernel:  [<c0439989>] .text.lock.rwsem+0x2b/0x3a
> Apr  3 12:41:25 sp2 kernel:  [<c046aa6a>] sys_mprotect+0xbd/0x1eb 
>
> Apr  3 12:41:25 sp2 kernel:  [<c0404f4b>] syscall_call+0x7/0xb 
>
> Apr  3 12:41:25 sp2 kernel:  =======================
> Apr  3 12:41:25 sp2 kernel: INFO: task clamd:15721 blocked for more than 
> 120 seconds.
> Apr  3 12:41:26 sp2 kernel: "echo 0 > 
> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> Apr  3 12:41:26 sp2 kernel: clamd         D 00000D49  2528 15721      1 
>          16416 15449 (NOTLB)
> Apr  3 12:41:26 sp2 kernel:        e848cf74 00000086 8f107b57 00000d49 
> 30ea2005 e848cf44 c08259d0 00000007
> Apr  3 12:41:26 sp2 kernel:        e8c6aaa0 8f117848 00000d49 0000fcf1 
> 00000000 e8c6abac c200cc80 f4f5f3c0
> Apr  3 12:41:26 sp2 kernel:        c041f863 00000184 c200d620 c2013ac4 
> 00000020 00000000 d887f0a8 f766f0c0
> Apr  3 12:41:26 sp2 kernel: Call Trace:
> Apr  3 12:41:26 sp2 kernel:  [<c041f863>] default_wake_function+0x0/0xc
> Apr  3 12:41:26 sp2 kernel:  [<c048e994>] destroy_inode+0x38/0x47
> Apr  3 12:41:26 sp2 kernel:  [<c0622f16>] 
> rwsem_down_write_failed+0x126/0x141
> Apr  3 12:41:26 sp2 kernel:  [<c0439989>] .text.lock.rwsem+0x2b/0x3a
> Apr  3 12:41:26 sp2 kernel:  [<c046a32b>] sys_munmap+0x24/0x41 
>
> Apr  3 12:41:26 sp2 kernel:  [<c0404f4b>] syscall_call+0x7/0xb
>

It sounds like some kind of IO or memory problem.  I would probably
start by running MEMTEST and the basic diagnostic tests provided by
DELL, which if you don't have installed on your disk can be downloaded
in the form of  a CentOS based openmange liveCD from somewhere on the
dell site.  It could also be a disk problem, but from the output you
provide I think I would look for memory or IO bus problems first and
then look for disk problems if you don't find anything with the first
two.  It almost looks like a memory controller problem.

Nataraj

_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos


[Index of Archives]     [CentOS]     [CentOS Announce]     [CentOS Development]     [CentOS ARM Devel]     [CentOS Docs]     [CentOS Virtualization]     [Carrier Grade Linux]     [Linux Media]     [Asterisk]     [DCCP]     [Netdev]     [Xorg]     [Linux USB]
  Powered by Linux