There is a very rare bug in NAT processing that yeilds a thread
index of ~0. When this happens, vlib_get_frame_queue_elt()
suffers a segfault and VPP quits. Prevent an outright fault
by dropping the packet instead.
Type: fix
Signed-off-by: Jon Loeliger <jdl@netgate.com>
Change-Id: I48c7a268925bb821ea15e58db5d4bfb211c40c09
vlib_frame_queue_t *fq;
u64 nelts, tail, new_tail;
+ if (index >= vec_len (fqm->vlib_frame_queues))
+ return 0;
+
fq = fqm->vlib_frame_queues[index];
ASSERT (fq);
nelts = fq->nelts;