From: Andrei Otcheretianski <[email protected]> [ Upstream commit 0f611d28fc2e13cfec64e1c544c16a086886805a ]
Since moving the interface combination checks to mac80211, it's broken because it now only considers interfaces with an assigned channel context, so for example any interface that isn't active can still be up, which is clearly an issue; also, in particular P2P-Device wdevs are an issue since they never have a chanctx. Fix this by counting running interfaces instead the ones with a channel context assigned. Cc: [email protected] [3.16+] Fixes: 73de86a38962b ("cfg80211/mac80211: move interface counting for combination check to mac80211") Signed-off-by: Andrei Otcheretianski <[email protected]> Signed-off-by: Emmanuel Grumbach <[email protected]> [rewrite commit message, dig out the commit it fixes] Signed-off-by: Johannes Berg <[email protected]> Signed-off-by: Sasha Levin <[email protected]> --- net/mac80211/util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 3c61060..0043256 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -3050,7 +3050,7 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, wdev_iter = &sdata_iter->wdev; if (sdata_iter == sdata || - rcu_access_pointer(sdata_iter->vif.chanctx_conf) == NULL || + !ieee80211_sdata_running(sdata_iter) || local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype)) continue; -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
