5.15-stable review patch. If anyone has any objections, please let me know.
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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 d10686f4bf15..d51d27ff3729 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -216,7 +216,9 @@ 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,