From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: MichelleJin <shjy180909@gmail.com>,
Johannes Berg <johannes.berg@intel.com>,
Sasha Levin <sashal@kernel.org>,
johannes@sipsolutions.net, davem@davemloft.net, kuba@kernel.org,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.14 26/40] mac80211: check return value of rhashtable_init
Date: Tue, 5 Oct 2021 09:50:05 -0400 [thread overview]
Message-ID: <20211005135020.214291-26-sashal@kernel.org> (raw)
In-Reply-To: <20211005135020.214291-1-sashal@kernel.org>
From: MichelleJin <shjy180909@gmail.com>
[ Upstream commit 111461d573741c17eafad029ac93474fa9adcce0 ]
When rhashtable_init() fails, it returns -EINVAL.
However, since error return value of rhashtable_init is not checked,
it can cause use of uninitialized pointers.
So, fix unhandled errors of rhashtable_init.
Signed-off-by: MichelleJin <shjy180909@gmail.com>
Link: https://lore.kernel.org/r/20210927033457.1020967-4-shjy180909@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/mesh_pathtbl.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index efbefcbac3ac..7cab1cf09bf1 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -60,7 +60,10 @@ static struct mesh_table *mesh_table_alloc(void)
atomic_set(&newtbl->entries, 0);
spin_lock_init(&newtbl->gates_lock);
spin_lock_init(&newtbl->walk_lock);
- rhashtable_init(&newtbl->rhead, &mesh_rht_params);
+ if (rhashtable_init(&newtbl->rhead, &mesh_rht_params)) {
+ kfree(newtbl);
+ return NULL;
+ }
return newtbl;
}
--
2.33.0
prev parent reply other threads:[~2021-10-05 13:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20211005135020.214291-1-sashal@kernel.org>
2021-10-05 13:50 ` [PATCH AUTOSEL 5.14 21/40] mac80211: Drop frames from invalid MAC address in ad-hoc mode Sasha Levin
2021-10-05 13:50 ` Sasha Levin [this message]
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