netdev - Re: kernel panic in qdisc_match_from

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Date:	Tue, 16 Aug 2016 21:18:37 +0200 (CEST)
From:	Jiri Kosina <jikos@...nel.org>
To:	David Ahern <dsa@...ulusnetworks.com>
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 Tue, 16 Aug 2016, David Ahern wrote:

> Jiri:
> 
> 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.

Thanks,

-- 
Jiri Kosina
SUSE Labs