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zebra: add null check before connecting recursive depend

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Add a null check in `handle_recursive_depend()` so it
doesn't try to add a NULL pointer to the RB tree.

This was found with clang SA.

Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
This commit is contained in:
Stephen Worley 2020-01-21 15:03:52 -05:00
parent c8b891b483
commit a7e1b02d4a
1 changed files with 3 additions and 1 deletions
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4
zebra/zebra_nhg.c
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@ -510,7 +510,9 @@ static void handle_recursive_depend(struct nhg_connected_tree_head *nhg_depends,
resolved_ng.nexthop = nh; resolved_ng.nexthop = nh;
depend = zebra_nhg_rib_find(0, &resolved_ng, afi); depend = zebra_nhg_rib_find(0, &resolved_ng, afi);
depends_add(nhg_depends, depend);
if (depend)
depends_add(nhg_depends, depend);
} }
static bool zebra_nhg_find(struct nhg_hash_entry **nhe, uint32_t id, static bool zebra_nhg_find(struct nhg_hash_entry **nhe, uint32_t id,