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[ovs-dev,v1,2/4] connmgr: Fix crash when in_band_create() fails.

Message ID 1500389610-5540-2-git-send-email-majopela@redhat.com
State Not Applicable, archived
Headers show

Commit Message

Miguel Angel Ajo July 18, 2017, 2:53 p.m. UTC 
From: Ben Pfaff <blp@ovn.org>

update_in_band_remotes() created an in-band manager and then tried to work
with it without first checking whether creation had succeeded.  If it
failed, this led to a segfault.

Reported-by: Numan Siddique <nusiddiq@redhat.com>
Reported-at: https://mail.openvswitch.org/pipermail/ovs-dev/2017-July/335530.html
Signed-off-by: Ben Pfaff <blp@ovn.org>
Acked-by: Justin Pettit <jpettit@ovn.org>
---
 ofproto/connmgr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/ofproto/connmgr.c b/ofproto/connmgr.c
index 2b0b78f..2dc414d 100644
--- a/ofproto/connmgr.c
+++ b/ofproto/connmgr.c
@@ -791,12 +791,12 @@  update_in_band_remotes(struct connmgr *mgr)
         if (!mgr->in_band) {
             in_band_create(mgr->ofproto, mgr->local_port_name, &mgr->in_band);
         }
-        in_band_set_queue(mgr->in_band, mgr->in_band_queue);
     } else {
         /* in_band_run() needs a chance to delete any existing in-band flows.
          * We will destroy mgr->in_band after it's done with that. */
     }
     if (mgr->in_band) {
+        in_band_set_queue(mgr->in_band, mgr->in_band_queue);
         in_band_set_remotes(mgr->in_band, addrs, n_addrs);
     }