On Mon, Apr 5, 2010 at 7:19 PM, Gilberto Nunes < gilberto.nunes@selbetti.com.br> wrote:
Hi....
I get this messages from kernel:
Apr 5 09:19:03 zebra kernel: BUG: warning at lib/kref.c:32/kref_get() (Not tainted) Apr 5 09:19:03 zebra kernel: Apr 5 09:19:03 zebra kernel: Call Trace: Apr 5 09:19:03 zebra kernel: [<ffffffff8023824d>] kref_get+0x38/0x3d Apr 5 09:19:03 zebra kernel: [<ffffffff8025a440>] kobject_get+0x12/0x17 Apr 5 09:19:03 zebra kernel: [<ffffffff8024b57f>] blk_get_queue+0x1f/0x26 Apr 5 09:19:03 zebra kernel: [<ffffffff887198f7>] :blkbk:dispatch_rw_block_io+0x4db/0x5a2 Apr 5 09:19:03 zebra kernel: [<ffffffff80340368>] __next_cpu+0x19/0x28 Apr 5 09:19:03 zebra kernel: [<ffffffff8026082b>] error_exit+0x0/0x6e Apr 5 09:19:03 zebra kernel: [<ffffffff8028792a>] find_busiest_group+0x1db/0x44d Apr 5 09:19:03 zebra kernel: [<ffffffff80262dd3>] thread_return+0x6c/0x113 Apr 5 09:19:03 zebra kernel: [<ffffffff8026082b>] error_exit+0x0/0x6e Apr 5 09:19:03 zebra kernel: [<ffffffff80340af5>] kobject_cleanup+0x39/0x7e Apr 5 09:19:03 zebra kernel: [<ffffffff88719d2c>] :blkbk:blkif_schedule+0x36e/0x456 Apr 5 09:19:03 zebra kernel: [<ffffffff887199be>] :blkbk:blkif_schedule+0x0/0x456 Apr 5 09:19:03 zebra kernel: [<ffffffff8029bdab>] keventd_create_kthread+0x0/0xc4 Apr 5 09:19:03 zebra kernel: [<ffffffff80233bef>] kthread+0xfe/0x132 Apr 5 09:19:03 zebra kernel: [<ffffffff80260b2c>] child_rip+0xa/0x12 Apr 5 09:19:03 zebra kernel: [<ffffffff8029bdab>] keventd_create_kthread+0x0/0xc4 Apr 5 09:19:03 zebra kernel: [<ffffffff80233af1>] kthread+0x0/0x132 Apr 5 09:19:03 zebra kernel: [<ffffffff80260b22>] child_rip+0x0/0x12
What is this and how to fix it??
Thanks
Gilberto Nunes Ferreira *Suporte T.I.* *Selbetti Gestão de Documentos* *(47) 3441-6004 / (47) 8861-6672* *Fax (47) 3441-6021* *gilberto.nunes@selbetti.com.br*
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
this is in VM right? on my machine, i just upgrade the memory and cpu.
Hi
This message appears on host not in VM....
Thanks
aditya hilman escreveu:
On Mon, Apr 5, 2010 at 7:19 PM, Gilberto Nunes <gilberto.nunes@selbetti.com.br mailto:gilberto.nunes@selbetti.com.br> wrote:
Hi.... I get this messages from kernel: Apr 5 09:19:03 zebra kernel: BUG: warning at lib/kref.c:32/kref_get() (Not tainted) Apr 5 09:19:03 zebra kernel: Apr 5 09:19:03 zebra kernel: Call Trace: Apr 5 09:19:03 zebra kernel: [<ffffffff8023824d>] kref_get+0x38/0x3d Apr 5 09:19:03 zebra kernel: [<ffffffff8025a440>] kobject_get+0x12/0x17 Apr 5 09:19:03 zebra kernel: [<ffffffff8024b57f>] blk_get_queue+0x1f/0x26 Apr 5 09:19:03 zebra kernel: [<ffffffff887198f7>] :blkbk:dispatch_rw_block_io+0x4db/0x5a2 Apr 5 09:19:03 zebra kernel: [<ffffffff80340368>] __next_cpu+0x19/0x28 Apr 5 09:19:03 zebra kernel: [<ffffffff8026082b>] error_exit+0x0/0x6e Apr 5 09:19:03 zebra kernel: [<ffffffff8028792a>] find_busiest_group+0x1db/0x44d Apr 5 09:19:03 zebra kernel: [<ffffffff80262dd3>] thread_return+0x6c/0x113 Apr 5 09:19:03 zebra kernel: [<ffffffff8026082b>] error_exit+0x0/0x6e Apr 5 09:19:03 zebra kernel: [<ffffffff80340af5>] kobject_cleanup+0x39/0x7e Apr 5 09:19:03 zebra kernel: [<ffffffff88719d2c>] :blkbk:blkif_schedule+0x36e/0x456 Apr 5 09:19:03 zebra kernel: [<ffffffff887199be>] :blkbk:blkif_schedule+0x0/0x456 Apr 5 09:19:03 zebra kernel: [<ffffffff8029bdab>] keventd_create_kthread+0x0/0xc4 Apr 5 09:19:03 zebra kernel: [<ffffffff80233bef>] kthread+0xfe/0x132 Apr 5 09:19:03 zebra kernel: [<ffffffff80260b2c>] child_rip+0xa/0x12 Apr 5 09:19:03 zebra kernel: [<ffffffff8029bdab>] keventd_create_kthread+0x0/0xc4 Apr 5 09:19:03 zebra kernel: [<ffffffff80233af1>] kthread+0x0/0x132 Apr 5 09:19:03 zebra kernel: [<ffffffff80260b22>] child_rip+0x0/0x12 What is this and how to fix it?? Thanks -- Gilberto Nunes Ferreira *Suporte T.I.* *Selbetti Gestão de Documentos* *(47) 3441-6004 / (47) 8861-6672* *Fax (47) 3441-6021* /*gilberto.nunes@selbetti.com.br <mailto:gilberto.nunes@selbetti.com.br>*/ _______________________________________________ CentOS mailing list CentOS@centos.org <mailto:CentOS@centos.org> http://lists.centos.org/mailman/listinfo/centos
this is in VM right? on my machine, i just upgrade the memory and cpu.
-- Regards, Adit
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Hi
I have 16 GB of memory on this hosts.... Not so much, but I think is enough...
Tks
Tsuyoshi Nagata escreveu:
(2010/04/05 22:57), Gilberto Nunes wrote:
Apr 5 09:19:03 zebra kernel: [<ffffffff8029bdab>]
keventd_create_kthread+0x0/0xc4
Its possible on VM and host kernel with in-sufficient memory. buy more memory :-))
-Tsuyoshi _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
The message seems problem is on disk io. This "child_rip" handler erases everything in shutting down sequences, but kernel object already erased. Its cause from .. 1. some driver double freed a same object. (driver problem) 2. heavy new/delete events double frees a same object(environment problem)
To resolve your problem, keep your disk access stably. I saw you use xen kernel to ask xen-expert. HOST and GEST can't handle like memory problem on VM environment, Reduce I/O, Change your hypervisor.
you can try many version of kernel-xen on centos.(or Xenserver) you can reduce your traffic on your environment.(or upgrade your system ;)
-Tsuyoshi