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fib: fix use-after-free for interface adj removal

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Type: fix

Change-Id: I82308e368d14d84f5970dad229bdcf2de7d1839d
Signed-off-by: Benoît Ganne <bganne@cisco.com>
(cherry picked from commit 7391156ce68a81f258d65f498ec6161d694fae47)
This commit is contained in:
Benoît Ganne
2019-10-16 15:08:37 +02:00
committed by Dave Barach
parent 8b7faa7270
commit f864498309
1 changed files with 3 additions and 0 deletions
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3
src/vnet/adj/adj_nbr.c
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@ -823,12 +823,15 @@ adj_nbr_interface_delete_one (adj_index_t ai,
};
ip_adjacency_t *adj;
adj_lock(ai);
adj = adj_get(ai);
adj->ia_flags |= ADJ_FLAG_SYNC_WALK_ACTIVE;
fib_walk_sync(FIB_NODE_TYPE_ADJ, ai, &bw_ctx);
adj->ia_flags &= ~ADJ_FLAG_SYNC_WALK_ACTIVE;
adj_unlock(ai);
return (ADJ_WALK_RC_CONTINUE);
}