Hi,
Can you reproduce this?
> [ 54.426491] UBSAN: Undefined behaviour in net/wireless/nl80211.c:718:4
> [ 54.426492] signed integer overflow:
> [ 54.426493] -1665903437 * 100 cannot be represented in type 'int'
Obviously.
However, it looks like the real reason is that there's some garbage (-
1665903437) in chan->max_power, which is just stack memory being leaked
out...
This should help?
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 78e71b0390be..7b42f0bacfd8 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -1769,8 +1769,7 @@ static void handle_reg_beacon(struct wiphy *wiphy, unsigned int chan_idx,
if (wiphy->regulatory_flags & REGULATORY_DISABLE_BEACON_HINTS)
return;
- chan_before.center_freq = chan->center_freq;
- chan_before.flags = chan->flags;
+ chan_before = *chan;
if (chan->flags & IEEE80211_CHAN_NO_IR) {
chan->flags &= ~IEEE80211_CHAN_NO_IR;
johannes
