6.1-stable review patch. If anyone has any objections, please let me know.
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From: Edward Adam Davis eadavis@qq.com
[ Upstream commit c575f5374be7a5c4be4acb9fe6be3a4669d94674 ]
Setting tsf is meaningless if beacon is disabled, so check that beacon is enabled before setting tsf.
Reported-by: syzbot+064815c6cd721082a52a@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=064815c6cd721082a52a Tested-by: syzbot+064815c6cd721082a52a@syzkaller.appspotmail.com Signed-off-by: Edward Adam Davis eadavis@qq.com Link: https://patch.msgid.link/tencent_3609AC2EFAAED68CA5A7E3C6D212D1C67806@qq.com Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/mac80211_hwsim.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index abcd165a62cfe..80a2a668cfb9e 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -1091,6 +1091,11 @@ 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) {