diff mbox series

wifi: cfg80211: lock wiphy mutex for rfkill poll

Message ID 20231108134124.de02800a7b66.I8caff5f6d6a5212bca99afad1a191cf2321cdf28@changeid (mailing list archive)
State Accepted
Delegated to: Johannes Berg
Headers show
Series wifi: cfg80211: lock wiphy mutex for rfkill poll | expand

Commit Message

Johannes Berg Nov. 8, 2023, 12:41 p.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

We want to guarantee the mutex is held for pretty much
all operations, so ensure that here as well.

Reported-by: syzbot+7e59a5bfc7a897247e18@syzkaller.appspotmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/wireless/core.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/net/wireless/core.c b/net/wireless/core.c
index 758c9a2a12c0..3f756ce46602 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -221,7 +221,9 @@  static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data)
 {
 	struct cfg80211_registered_device *rdev = data;
 
+	wiphy_lock(&rdev->wiphy);
 	rdev_rfkill_poll(rdev);
+	wiphy_unlock(&rdev->wiphy);
 }
 
 void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,