From: Larry Finger <larry.finger@xxxxxxxxxxxx>
Add a sanity check in rate_control_pid_adjust_rate(). Thanks to Larry Finger
for suggesting this and reporting a related bug.
Signed-off-by: Stefano Brivio <stefano.brivio@xxxxxxxxx>
NOT-Signed-off-by: Larry Finger <larry.finger@xxxxxxxxxxxx>
---
Index: wireless-2.6/net/mac80211/rc80211_pid_algo.c
===================================================================
--- wireless-2.6.orig/net/mac80211/rc80211_pid_algo.c
+++ wireless-2.6/net/mac80211/rc80211_pid_algo.c
@@ -128,6 +128,11 @@ static void rate_control_pid_adjust_rate
}
newidx += back;
+
+ if (newidx < 0 || newidx >= sband->n_bitrates) {
+ WARN_ON(1);
+ break;
+ }
}
#ifdef CONFIG_MAC80211_DEBUGFS
--
Ciao
Stefano
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