[PATCH AUTOSEL 6.1 12/29] wifi: mac80211: apply mcast rate only if interface is up

Sasha Levin
2024-06-17T13:25:18Z

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

[ Upstream commit 02c665f048a439c0d58cc45334c94634bd7c18e6 ]

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

Reported-by: syzbot+de87c09cc7b964ea2e23@syzkaller.appspotmail.com
Link: https://msgid.link/20240515133410.d6cffe5756cc.I47b624a317e62bdb4609ff7fa79403c0c444d32d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/cfg.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 1e57027da2913..2c60fc165801c 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -2838,8 +2838,9 @@ 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_link_info_change_notify(sdata, &sdata->deflink,
- BSS_CHANGED_MCAST_RATE);
+ if (ieee80211_sdata_running(sdata))
+ ieee80211_link_info_change_notify(sdata, &sdata->deflink,
+ BSS_CHANGED_MCAST_RATE);

return 0;
}
--
2.43.0