From: Shayne Chen shayne.chen@mediatek.com
[ Upstream commit 59336e07b287d91dc4ec265e07724e8f7e3d0209 ]
The value of last_rate in ieee80211_sta_rx_stats is degraded from u32 to u16 after being assigned to rate variable, which causes information loss in STA_STATS_FIELD_TYPE and later bitfields.
Signed-off-by: Shayne Chen shayne.chen@mediatek.com Link: https://lore.kernel.org/r/20230209110659.25447-1-shayne.chen@mediatek.com Fixes: 41cbb0f5a295 ("mac80211: add support for HE") Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/mac80211/sta_info.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index 04e0f132b1d9c..34cb833db25f5 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -2411,7 +2411,7 @@ static void sta_stats_decode_rate(struct ieee80211_local *local, u32 rate,
static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) { - u16 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate); + u32 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate);
if (rate == STA_STATS_RATE_INVALID) return -EINVAL;