On Wed, Jun 17, 2015 at 02:22:32PM +0900, Simon Horman wrote:
> As per the testcase included in this patch it has been observed
> that ovs-vswtichd may segfault when deleting a bridge.
>
> Analysing the output of valgrind and gdb it appears that
> this is caused by the connmgr of a ofproto being accessed
> after the latter has been freed.
>
> It appears that this is occurring in different threads and
> is the result of the following postponement arrangement in ofproto_destroy();
>
> /* We should not postpone this because it involves deleting a listening
> * socket which we may want to reopen soon. 'connmgr' should not be used
> * by other threads */
> connmgr_destroy(p->connmgr);
>
> /* Destroying rules is deferred, must have 'ofproto' around for them. */
> ovsrcu_postpone(ofproto_destroy__, p);
Thanks a lot for the report and the fix. I found what I think is a
cleaner fix:
http://openvswitch.org/pipermail/dev/2015-June/056716.html
Will you review it? Thanks!
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