From: Andrew Morton <akpm@osdl.org>
To: Badari Pulavarty <pbadari@us.ibm.com>
Cc: linux-kernel@vger.kernel.org, hugh@veritas.com
Subject: Re: 2.6.14 X spinning in the kernel
Date: Mon, 14 Nov 2005 16:17:04 -0800 [thread overview]
Message-ID: <20051114161704.5b918e67.akpm@osdl.org> (raw)
In-Reply-To: <1132012281.24066.36.camel@localhost.localdomain>
Badari Pulavarty <pbadari@us.ibm.com> wrote:
>
> My 2-cpu EM64T machine started showing this problem again on 2.6.14.
> On some reboots, X seems to spin in the kernel forever.
>
> sysrq-t output shows nothing.
>
> X R running task 0 3607 3589 3903
> (L-TLB)
>
> top shows:
> 3607 root 25 0 0 0 0 R 99.1 0.0 262:04.69 X
>
>
> So, I wrote a module to do smp_call_function() on all CPUs
> to show stacks on them. CPU0 seems to be spinning in exit_mmap().
> I did this multiple times to collect stacks few times.
>
> Is this a known issue ?
Nope. Maybe your vma list has a loop in it, in remove_vma()? slab
debugging would detect that, due to the repeated
kmem_cache_free(vm_area_cachep, vma);
next prev parent reply other threads:[~2005-11-15 0:16 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-14 23:51 Badari Pulavarty
2005-11-15 0:17 ` Andrew Morton [this message]
2005-11-15 0:52 ` Badari Pulavarty
2005-11-15 1:30 ` Andrew Morton
2005-11-15 2:48 ` Dave Airlie
2005-11-15 2:57 ` Andrew Morton
2005-11-15 3:02 ` Dave Airlie
2005-11-15 22:50 ` Badari Pulavarty
2005-11-15 3:10 ` Dave Jones
2005-11-15 22:49 ` Badari Pulavarty
2005-11-16 21:07 ` Max Krasnyansky
2005-11-16 21:52 ` Badari Pulavarty
2005-11-16 22:11 ` Lee Revell
2005-11-16 22:37 ` Badari Pulavarty
2005-11-16 22:42 ` Dave Airlie
2005-11-16 23:27 ` Badari Pulavarty
2005-11-17 0:10 ` Badari Pulavarty
2005-11-16 15:24 ` Pasi Savolainen
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