Commit "3d9646d mac80211: fix channel selection bug" introduced a possible
infinite loop by moving the out target above the chandef_downgrade
while loop. When we downgrade to NL80211_CHAN_WIDTH_20_NOHT, we jump
back up to re-run the while loop...indefinitely. Replace goto with
break and carry on. This may not be sufficient to connect to the AP,
but will at least keep the cpu from livelocking. Thanks to Derek Atkins
as an extra pair of debugging eyes.
Cc: stable@xxxxxxxxxx
Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx>
---
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 0e5aab1..b68ca05 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -336,7 +336,7 @@ out:
if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
ret = IEEE80211_STA_DISABLE_HT |
IEEE80211_STA_DISABLE_VHT;
- goto out;
+ break;
}
ret |= chandef_downgrade(chandef);
--
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