Merge pull request FRRouting#16397 from FRRouting/mergify/bp/stable/9…

….1/pr-16365 isisd: fix crash when calculating the neighbor spanning tree based on the fragmented LSP (backport FRRouting#16365)
opensourcerouting · Jul 17, 2024 · 6b77433 · 6b77433
2 parents f412949 + 5658142
commit 6b77433
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/isisd/isis_spf.c b/isisd/isis_spf.c
@@ -873,6 +873,9 @@ static int isis_spf_process_lsp(struct isis_spftree *spftree,
 			    || (mt_router_info && !mt_router_info->overload));
 
 lspfragloop:
+	if (!lsp->tlvs)
+		return ISIS_OK;
+
 	if (lsp->hdr.seqno == 0) {
 		zlog_warn("%s: lsp with 0 seq_num - ignore", __func__);
 		return ISIS_WARNING;