From: Johannes Berg <johannes.berg@xxxxxxxxx>
This is a very old bug, but there's nothing that prevents the
timer from running while the module is being removed when we
only do del_timer() instead of del_timer_sync().
The timer should normally not be running at this point, but
it's not clearly impossible (or we could just remove this.)
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
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 0f709d54..527453d 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -884,7 +884,7 @@ void sta_info_init(struct ieee80211_local *local)
void sta_info_stop(struct ieee80211_local *local)
{
- del_timer(&local->sta_cleanup);
+ del_timer_sync(&local->sta_cleanup);
sta_info_flush(local, NULL);
}
--
1.8.0
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