nl80211: Fix AP deinit path (link removal) in error cases

If the interface initialization fails, no links might be set when
calling the deinit functions. Those functions need to be prepared for
bss->n_links being 0.

Fixes: 859cbc396fc0 ("nl80211: Remove links when stopping AP MLD in hostapd")
Signed-off-by: Jouni Malinen <j@w1.fi>

diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index 4bebd6ed3f8cd90c2f7880b1ed563b166f16c50b..0f4259c1c275ed40ac6fdf061c8bb741bae17266 100644 (file)
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -9372,6 +9372,9 @@ static void nl80211_remove_links(struct i802_bss *bss)
        int ret;
        u8 link_id;
 
+       if (bss->n_links == 0)
+               return;
+
        while (bss->links[0].link_id != NL80211_DRV_LINK_ID_NA) {
                struct i802_link *link = &bss->links[0];