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irqbalance on movidis crashes the machine (was: movidis x16 hard

To: David Daney <ddaney@caviumnetworks.com>, linux-mips@linux-mips.org
Subject: irqbalance on movidis crashes the machine (was: movidis x16 hard lockup using 2.6.33)
From: Andreas Barth <aba@not.so.argh.org>
Date: Thu, 15 Apr 2010 20:43:12 +0200
In-reply-to: <20100403154312.GY2437@apfelkorn>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20100326184132.GU2437@apfelkorn> <4BAD03A5.9070701@caviumnetworks.com> <20100327230744.GG27216@mails.so.argh.org> <4BB0DB2A.9080405@caviumnetworks.com> <20100402133224.GR27216@mails.so.argh.org> <20100403154312.GY2437@apfelkorn>
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User-agent: Mutt/1.5.18 (2008-05-17)
* Peter 'p2' De Schrijver (p2@debian.org) [100403 17:43]:
> http://zobel.ftbfs.de/.x/lucatelli-nmi-watchdog-output.txt 
> Dump of one of those hangs. Most cores seem to be stuck in wait 
> (0xffffffff81100b80), except for core 1 which is in octeon_irq_ciu0_ack 
> (octeon_irq_ciu0_ack).

On further investigation we found out that this happens when
irqbalance is started. The version of irqbalance being run is 0.55.

We removed this program from the affected machine, but of course this
still should be fixed (and we still get a few reboots on another
machine without irqbalance).


Andi

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