From: Johannes Berg <johannes.berg@xxxxxxxxx> OR'ing in 0x40 before a memcpy() to overwrite the value doesn't do much good - flip the order of operations are reported and tested by Jouni. Fixes: cb1a5bae5684 ("mac80211_hwsim: add permanent mac address option for new radios") Reported-by: Jouni Malinen <j@xxxxx> Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx> --- drivers/net/wireless/mac80211_hwsim.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index 7b6c3640a94f..930ddef91093 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -2584,8 +2584,8 @@ static int mac80211_hwsim_new_radio(struct genl_info *info, addr[4] = idx; memcpy(data->addresses[0].addr, addr, ETH_ALEN); /* Why need here second address ? */ - data->addresses[1].addr[0] |= 0x40; memcpy(data->addresses[1].addr, addr, ETH_ALEN); + data->addresses[1].addr[0] |= 0x40; hw->wiphy->n_addresses = 2; hw->wiphy->addresses = data->addresses; /* possible address clash is checked at hash table insertion */ -- 2.15.1