diff options
| author | Felix Fietkau <[email protected]> | 2024-07-04 15:09:47 +0200 |
|---|---|---|
| committer | Johannes Berg <[email protected]> | 2024-07-08 18:28:47 +0200 |
| commit | 574e609c4e6a0843a9ed53de79e00da8fb3e7437 (patch) | |
| tree | 7dcf5775ecac5eee242945735e588abaa2e314d1 | |
| parent | 34ce9c8b8ada0c03ea8f2a99fcc7a1b297ccaa95 (diff) | |
wifi: mac80211: clear vif drv_priv after remove_interface when stopping
Avoid reusing stale driver data when an interface is brought down and up
again. In order to avoid having to duplicate the memset in every single
driver, do it here.
Signed-off-by: Felix Fietkau <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Johannes Berg <[email protected]>
| -rw-r--r-- | net/mac80211/iface.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 6d969d9f1ac9..97aee0a1a39a 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -689,8 +689,12 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do fallthrough; default: - if (going_down) - drv_remove_interface(local, sdata); + if (!going_down) + break; + drv_remove_interface(local, sdata); + + /* Clear private driver data to prevent reuse */ + memset(sdata->vif.drv_priv, 0, local->hw.vif_data_size); } ieee80211_recalc_ps(local); |