diff options
| author | Donald Sharp <sharpd@nvidia.com> | 2023-08-29 14:59:34 -0400 |
|---|---|---|
| committer | Mergify <37929162+mergify[bot]@users.noreply.github.com> | 2023-09-01 13:39:58 +0000 |
| commit | d51a97434b5cdc6aca96bcf8b202079e39dd62cf (patch) | |
| tree | 4e955dc5208f5eb72a24cbbbb411c20466fceb68 | |
| parent | 77b16f55a29ed740a64cd57a7c2db3683d541455 (diff) | |
pimd: Prevent crash when receiving register message when the RP() is unknown
When receiving a register message for a Group, that the group has no
associated RP specified. Prevent a crash from happening.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
(cherry picked from commit 54aa0bf6f294bd3a722d1707aa071ce97aa09a22)
| -rw-r--r-- | pimd/pim_register.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/pimd/pim_register.c b/pimd/pim_register.c index b5d9df6f2a..9696a76fc5 100644 --- a/pimd/pim_register.c +++ b/pimd/pim_register.c @@ -494,6 +494,7 @@ int pim_register_recv(struct interface *ifp, pim_addr dest_addr, struct pim_interface *pim_ifp = ifp->info; struct pim_instance *pim = pim_ifp->pim; pim_addr rp_addr; + struct pim_rpf *rpg; if (pim_ifp->pim_passive_enable) { if (PIM_DEBUG_PIM_PACKETS) @@ -602,7 +603,14 @@ int pim_register_recv(struct interface *ifp, pim_addr dest_addr, } } - rp_addr = (RP(pim, sg.grp))->rpf_addr; + rpg = RP(pim, sg.grp); + if (!rpg) { + zlog_warn("%s: Received Register Message %pSG from %pPA on %s where the RP could not be looked up", + __func__, &sg, &src_addr, ifp->name); + return 0; + } + + rp_addr = rpg->rpf_addr; if (i_am_rp && (!pim_addr_cmp(dest_addr, rp_addr))) { sentRegisterStop = 0; |