@@ -208,18 +208,20 @@ static int __cpuidle_cooling_register(struct device_node *np,
cdev = thermal_of_cooling_device_register(np, name, idle_cdev,
&cpuidle_cooling_ops);
- kfree(name);
-
if (IS_ERR(cdev)) {
ret = PTR_ERR(cdev);
- goto out_unregister;
+ goto out_kfree_name;
}
pr_debug("%s: Idle injection set with idle duration=%u, latency=%u\n",
name, idle_duration_us, latency_us);
+ kfree(name);
+
return 0;
+out_kfree_name:
+ kfree(name);
out_unregister:
idle_inject_unregister(ii_dev);
out_kfree:
The following commit has been merged into the thermal/next branch of thermal: Commit-ID: 6cc7b38c0ca3187abd07af849ec179b42337bcf6 Gitweb: https://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux.git//6cc7b38c0ca3187abd07af849ec179b42337bcf6 Author: Daniel Lezcano <daniel.lezcano@linaro.org> AuthorDate: Fri, 19 Mar 2021 21:25:22 +01:00 Committer: Daniel Lezcano <daniel.lezcano@linaro.org> CommitterDate: Thu, 15 Apr 2021 13:21:26 +02:00 thermal/drivers/cpuidle_cooling: Fix use after error When the function successfully finishes it logs an information about the registration of the cooling device and use its name to build the message. Unfortunately it was freed right before: drivers/thermal/cpuidle_cooling.c:218 __cpuidle_cooling_register() warn: 'name' was already freed. Fix this by freeing after the message happened. Fixes: 6fd1b186d900 ("thermal/drivers/cpuidle_cooling: Use device name instead of auto-numbering") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Link: https://lore.kernel.org/r/20210319202522.891061-1-daniel.lezcano@linaro.org --- drivers/thermal/cpuidle_cooling.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)