[lvc-project] [PATCH 5.10 5.15] wifi: mac80211: apply mcast rate only if interface is up

Alexander Ofitserov oficerovas at altlinux.org
Wed May 29 14:56:32 MSK 2024


From: Johannes Berg <johannes.berg ÎÁ intel.com>

If the interface isn't enabled, don't apply multicast
rate changes immediately.

Reported-by: syzbot+de87c09cc7b964ea2e23 ÎÁ syzkaller.appspotmail.com
Signed-off-by: Johannes Berg <johannes.berg ÎÁ intel.com>

Backported to 5.10 and 5.15

Signed-off-by: Alexander Ofitserov <oficerovas ÎÁ altlinux.org>
---
 net/mac80211/cfg.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 45bb6f2755987..ccd60c59b3d87 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -2561,7 +2561,8 @@ static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
 	memcpy(sdata->vif.bss_conf.mcast_rate, rate,
 	       sizeof(int) * NUM_NL80211_BANDS);
 
-	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MCAST_RATE);
+	if (ieee80211_sdata_running(sdata))
+		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MCAST_RATE);
 
 	return 0;
 }
-- 
2.42.1




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