From: Dan Carpenter <dan.carpenter@linaro.org>
Date: Sat, 30 Nov 2024 10:07:56 +0000 (+0300)
Subject: opp: core: Fix off by one in dev_pm_opp_get_bw()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=402074f0105e93154409e4a86c02d09e5199d9a5;p=users%2Fwilly%2Flinux.git

opp: core: Fix off by one in dev_pm_opp_get_bw()

The "opp->bandwidth" array has "opp->opp_table->path_count" number of
elements.  It's allocated in _opp_allocate().  So this > needs to be >=
to prevent an out of bounds access.

Fixes: d78653dcd8bf ("opp: core: implement dev_pm_opp_get_bw")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index d4a0030a0228..09a1432561f6 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -121,7 +121,7 @@ unsigned long dev_pm_opp_get_bw(struct dev_pm_opp *opp, bool peak, int index)
 		return 0;
 	}
 
-	if (index > opp->opp_table->path_count)
+	if (index >= opp->opp_table->path_count)
 		return 0;
 
 	if (!opp->bandwidth)