| Message ID | 20250621123209.511796-1-lachlan.hodges@morsemicro.com |
|---|---|
| State | New |
| Headers | show |
| Series | [wireless] wifi: mac80211: fix beacon interval calculation overflow | expand |
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 27d414efa3fd..a125995ed252 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -3884,7 +3884,7 @@ void ieee80211_recalc_dtim(struct ieee80211_local *local, { u64 tsf = drv_get_tsf(local, sdata); u64 dtim_count = 0; - u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; + u32 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; u8 dtim_period = sdata->vif.bss_conf.dtim_period; struct ps_data *ps; u8 bcns_from_dtim;
As we are converting from TU to usecs, a beacon interval of 100*1024 usecs will lead to integer wrapping. To fix change to use a u32. Fixes: 057d5f4ba1e4 ("mac80211: sync dtim_count to TSF") Signed-off-by: Lachlan Hodges <lachlan.hodges@morsemicro.com> --- net/mac80211/util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)