6.12-stable review patch. If anyone has any objections, please let me know.
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From: Johannes Berg johannes.berg@intel.com
[ Upstream commit aa3ce3f8fafa0b8fb062f28024855ea8cb3f3450 ]
If STA state is pre-moved to AUTHORIZED (such as in IBSS scenarios) and insertion fails, the station is freed. In this case, the driver never knew about the station, so trying to flush it is unexpected and may crash.
Check if the sta was uploaded to the driver before and fix this.
Fixes: d00800a289c9 ("wifi: mac80211: add flush_sta method") Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Miri Korenblit miriam.rachel.korenblit@intel.com Link: https://patch.msgid.link/20250102161730.e3d10970a7c7.I491bbcccc46f835ade07df... Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/mac80211/driver-ops.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h index d382d9729e853..a06644084d15d 100644 --- a/net/mac80211/driver-ops.h +++ b/net/mac80211/driver-ops.h @@ -724,6 +724,9 @@ static inline void drv_flush_sta(struct ieee80211_local *local, if (sdata && !check_sdata_in_driver(sdata)) return;
+ if (!sta->uploaded) + return; + trace_drv_flush_sta(local, sdata, &sta->sta); if (local->ops->flush_sta) local->ops->flush_sta(&local->hw, &sdata->vif, &sta->sta);