From: Johannes Berg johannes.berg@intel.com

[ Upstream commit 8e2f6f2366219b3304b227bdd2f04b64c92e3e12 ]

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 Signed-off-by: Sasha Levin sashal@kernel.org --- net/wireless/core.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/net/wireless/core.c b/net/wireless/core.c index 0e08629b15d1d..abe7912a23760 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -202,7 +202,9 @@ 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,