linux-kernel - [PATCH] cpufreq: Fix initialization with disabled boost

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <3cc5b83b-f81c-4bd7-b7ff-4d02db4e25d8@arm.com>
Date: Mon, 16 Jun 2025 18:25:43 +0100
From: Christian Loehle <christian.loehle@....com>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 linux-pm <linux-pm@...r.kernel.org>, Viresh Kumar <viresh.kumar@...aro.org>,
 "Rafael J. Wysocki" <rafael@...nel.org>
Cc: Robin Murphy <robin.murphy@....com>, zhenglifeng1@...wei.com
Subject: [PATCH] cpufreq: Fix initialization with disabled boost

The boost_enabled early return in policy_set_boost() caused
the boost disabled at initialization to not actually set the
initial policy->max, therefore effectively enabling boost while
it should have been enabled.

Fixes: 27241c8b63bd ("cpufreq: Introduce policy_set_boost()")
Reported-by: Robin Murphy <robin.murphy@....com>
Signed-off-by: Christian Loehle <christian.loehle@....com>
---
 drivers/cpufreq/cpufreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index d7426e1d8bdd..e85139bd0436 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1630,7 +1630,7 @@ static int cpufreq_online(unsigned int cpu)
 	 */
 	if (cpufreq_driver->set_boost && policy->boost_supported &&
 	    (new_policy || !cpufreq_boost_enabled())) {
-		ret = policy_set_boost(policy, cpufreq_boost_enabled());
+		ret = cpufreq_driver->set_boost(policy, cpufreq_boost_enabled());
 		if (ret) {
 			/* If the set_boost fails, the online operation is not affected */
 			pr_info("%s: CPU%d: Cannot %s BOOST\n", __func__, policy->cpu,
-- 
2.34.1