[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20221119021459.1775052-1-sashal@kernel.org>
Date: Fri, 18 Nov 2022 21:14:42 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: taozhang <taozhang@...technic.com>,
Johannes Berg <johannes.berg@...el.com>,
Sasha Levin <sashal@...nel.org>, johannes@...solutions.net,
davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
pabeni@...hat.com, linux-wireless@...r.kernel.org,
netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 5.10 01/18] wifi: mac80211: fix memory free error when registering wiphy fail
From: taozhang <taozhang@...technic.com>
[ Upstream commit 50b2e8711462409cd368c41067405aa446dfa2af ]
ieee80211_register_hw free the allocated cipher suites when
registering wiphy fail, and ieee80211_free_hw will re-free it.
set wiphy_ciphers_allocated to false after freeing allocated
cipher suites.
Signed-off-by: taozhang <taozhang@...technic.com>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
net/mac80211/main.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 73893025922f..ae90ac3be59a 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -1349,8 +1349,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
ieee80211_led_exit(local);
destroy_workqueue(local->workqueue);
fail_workqueue:
- if (local->wiphy_ciphers_allocated)
+ if (local->wiphy_ciphers_allocated) {
kfree(local->hw.wiphy->cipher_suites);
+ local->wiphy_ciphers_allocated = false;
+ }
kfree(local->int_scan_req);
return result;
}
@@ -1420,8 +1422,10 @@ void ieee80211_free_hw(struct ieee80211_hw *hw)
mutex_destroy(&local->iflist_mtx);
mutex_destroy(&local->mtx);
- if (local->wiphy_ciphers_allocated)
+ if (local->wiphy_ciphers_allocated) {
kfree(local->hw.wiphy->cipher_suites);
+ local->wiphy_ciphers_allocated = false;
+ }
idr_for_each(&local->ack_status_frames,
ieee80211_free_ack_frame, NULL);
--
2.35.1
Powered by blists - more mailing lists