Commit c575f537 authored by Edward Adam Davis's avatar Edward Adam Davis Committed by Johannes Berg
Browse files

wifi: mac80211_hwsim: Prevent tsf from setting if beacon is disabled 



Setting tsf is meaningless if beacon is disabled, so check that beacon
is enabled before setting tsf.

Reported-by: default avatar <syzbot+064815c6cd721082a52a@syzkaller.appspotmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=064815c6cd721082a52a


Tested-by: default avatar <syzbot+064815c6cd721082a52a@syzkaller.appspotmail.com>
Signed-off-by: default avatarEdward Adam Davis <eadavis@qq.com>
Link: https://patch.msgid.link/tencent_3609AC2EFAAED68CA5A7E3C6D212D1C67806@qq.com


Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 9ceba431

drivers/net/wireless/virtual/mac80211_hwsim.c

+5 −0
Original line number Diff line number Diff line
@@ -1229,6 +1229,11 @@ static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw, 
	/* MLD not supported here */

	u32 bcn_int = data->link_data[0].beacon_int;

	u64 delta = abs(tsf - now);

	struct ieee80211_bss_conf *conf;



	conf = link_conf_dereference_protected(vif, data->link_data[0].link_id);

	if (conf && !conf->enable_beacon)

		return;



	/* adjust after beaconing with new timestamp at old TBTT */

	if (tsf > now) {