netdev - Re: kernel panic in qdisc_match_from

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Message-ID: <0655f5cc-d24b-6fe3-aaac-a71898dacda5@cumulusnetworks.com>
Date:	Tue, 16 Aug 2016 14:06:57 -0600
From:	David Ahern <dsa@...ulusnetworks.com>
To:	Jiri Kosina <jikos@...nel.org>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Simon Horman <simon.horman@...ronome.com>
Subject: Re: kernel panic in qdisc_match_from_root starting openvswitch

On 8/16/16 1:51 PM, Jiri Kosina wrote:
> On Tue, 16 Aug 2016, Jiri Kosina wrote:
> 
>>> I am hitting a kernel panic with '/etc/init.d/openvswitch-switch 
>>> restart' Stack trace below. Reverting 59cc1f61f09c ("net: sched: convert 
>>> qdisc linked list to hashtable") clears the problem.
>>
>> Thanks a lot for the report. Could you please test either with the 
>> attached two patches applied on top of net-next, or alternatively with 
>> 'might-rebase/net-sched-qdiscs' branch of
>>
>> 	git://git.kernel.org/pub/scm/linux/kernel/git/jikos/jikos.git
>>
>> (HEAD of that branch is 60b3487ad7f) and report back to me whether it 
>> fixes any issues you are seeing? Applying the attached patches on top of 
>> net-next or testing with the git branch above should be equivalent test 
>> wrt. qdiscs.
> 
> And this time hopefully with the actual patches ... 
> 

Applied both and no longer see the panic starting openvswitch.