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mac80211: mesh: fix missing unlock on error in table_path_del()

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[ Upstream commit f2ffff085d ]

spin_lock_bh() is used in table_path_del() but rcu_read_unlock()
is used for unlocking. Fix it by using spin_unlock_bh() instead
of rcu_read_unlock() in the error handling case.

Fixes: b4c3fbe636 ("mac80211: Use linked list instead of rhashtable walk for mesh tables")
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wei Yongjun
2019-02-18 11:29:29 +01:00
committed by Greg Kroah-Hartman
parent e2379b044d
commit 04096b3bea
1 changed files with 1 additions and 1 deletions
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2
net/mac80211/mesh_pathtbl.c
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@@ -627,7 +627,7 @@ static int table_path_del(struct mesh_table *tbl,
spin_lock_bh(&tbl->walk_lock);
mpath = rhashtable_lookup_fast(&tbl->rhead, addr, mesh_rht_params);
if (!mpath) {
rcu_read_unlock();
spin_unlock_bh(&tbl->walk_lock);
return -ENXIO;
}