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pimd: Fix crash when looking up incoming interface

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It is possible that the incoming interface lookup
will fail because we are in transition from one vrf
to another.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2017-06-14 18:45:47 -04:00
parent b5f3a428f2
commit 05d8470ff5
1 changed files with 3 additions and 3 deletions
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6
pimd/pim_pim.c
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@ -327,11 +327,11 @@ static int pim_sock_read(struct thread *t)
* it's the right interface because we bind to it * it's the right interface because we bind to it
*/ */
ifp = if_lookup_by_index(ifindex, pim_ifp->pim->vrf_id); ifp = if_lookup_by_index(ifindex, pim_ifp->pim->vrf_id);
if (!ifp->info) { if (!ifp || !ifp->info) {
if (PIM_DEBUG_PIM_PACKETS) if (PIM_DEBUG_PIM_PACKETS)
zlog_debug( zlog_debug(
"%s: Received incoming pim packet on interface not yet configured for pim %s", "%s: Received incoming pim packet on interface not yet configured for pim",
__PRETTY_FUNCTION__, ifp->name); __PRETTY_FUNCTION__);
goto done; goto done;
} }
int fail = pim_pim_packet(ifp, buf, len); int fail = pim_pim_packet(ifp, buf, len);