diff options
| author | Daniel Drake <dsd@laptop.org> | 2012-08-02 18:41:48 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-08-06 14:29:58 -0400 |
| commit | 1f6fc43e621167492ed4b7f3b4269c584c3d6ccc (patch) | |
| tree | 9d1ad634c1405a8bdd0f9439b598508203cee829 /net/wireless/core.c | |
| parent | d4e5979c0da95791aa717c18e162540c7a596360 (diff) | |
| download | linux-1f6fc43e621167492ed4b7f3b4269c584c3d6ccc.tar.bz2 | |
cfg80211: process pending events when unregistering net device
libertas currently calls cfg80211_disconnected() when it is being
brought down. This causes an event to be allocated, but since the
wdev is already removed from the rdev by the time that the event
processing work executes, the event is never processed or freed.
http://article.gmane.org/gmane.linux.kernel.wireless.general/95666
Fix this leak, and other possible situations, by processing the event
queue when a device is being unregistered. Thanks to Johannes Berg for
the suggestion.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Cc: stable@vger.kernel.org
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/core.c')
| -rw-r--r-- | net/wireless/core.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/wireless/core.c b/net/wireless/core.c index 31b40cc4a9c3..dcd64d5b07aa 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -952,6 +952,11 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb, */ synchronize_rcu(); INIT_LIST_HEAD(&wdev->list); + /* + * Ensure that all events have been processed and + * freed. + */ + cfg80211_process_wdev_events(wdev); break; case NETDEV_PRE_UP: if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |