From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: taozhang <taozhang@bestechnic.com>,
Johannes Berg <johannes.berg@intel.com>,
Sasha Levin <sashal@kernel.org>,
johannes@sipsolutions.net, davem@davemloft.net,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.10 01/18] wifi: mac80211: fix memory free error when registering wiphy fail
Date: Fri, 18 Nov 2022 21:14:42 -0500 [thread overview]
Message-ID: <20221119021459.1775052-1-sashal@kernel.org> (raw)
From: taozhang <taozhang@bestechnic.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@bestechnic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.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
next reply other threads:[~2022-11-19 2:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-19 2:14 Sasha Levin [this message]
2022-11-19 2:14 ` [PATCH AUTOSEL 5.10 02/18] wifi: mac80211_hwsim: fix debugfs attribute ps with rc table support Sasha Levin
2022-11-19 2:14 ` [PATCH AUTOSEL 5.10 05/18] wifi: airo: do not assign -1 to unsigned char Sasha Levin
2022-11-19 2:14 ` [PATCH AUTOSEL 5.10 06/18] wifi: mac80211: Fix ack frame idr leak when mesh has no route Sasha Levin
2022-11-19 2:14 ` [PATCH AUTOSEL 5.10 09/18] Revert "net: macsec: report real_dev features when HW offloading is enabled" Sasha Levin
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