From 50b2e8711462409cd368c41067405aa446dfa2af Mon Sep 17 00:00:00 2001
From: taozhang <taozhang@bestechnic.com>
Date: Sat, 15 Oct 2022 17:38:31 +0800
Subject: [PATCH] wifi: mac80211: fix memory free error when registering wiphy fail
Git-commit: 50b2e8711462409cd368c41067405aa446dfa2af
Patch-mainline: v6.1-rc5
References: git-fixes
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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
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 46f3eddc2388..02b5abc7326b 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -1439,8 +1439,10 @@ 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;
}
@@ -1508,8 +1510,10 @@ 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);
--
2.35.3