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lib: Add a warning for when we are not operating correctly

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There exists a possibilty that route map dependencies
have gotten wrong.  Prevent the crash and warn the user
that we may be in trouble.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>
This commit is contained in:
Donald Sharp 2020-12-18 14:38:40 -05:00
parent 02e7a369b8
commit 9149c63517
1 changed files with 11 additions and 4 deletions
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15
lib/routemap.c
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@ -2767,12 +2767,19 @@ static int route_map_dep_update(struct hash *dephash, const char *dep_name,
memset(&tmp_dep_data, 0, sizeof(struct route_map_dep_data));
tmp_dep_data.rname = rname;
dep_data = hash_lookup(dep->dep_rmap_hash, &tmp_dep_data);
if (!dep_data)
/*
* If dep_data is NULL then something has gone seriously
* wrong in route-map handling. Note it and prevent
* the crash.
*/
if (!dep_data) {
zlog_warn(
"route-map dependency for route-map %s: %s is not correct",
rmap_name, dep_name);
goto out;
}
if (dep_data->refcnt)
dep_data->refcnt--;
dep_data->refcnt--;
if (!dep_data->refcnt) {
ret_dep_data = hash_release(dep->dep_rmap_hash,