Thread (5 messages) 5 messages, 3 authors, 2017-08-29

[Bug] ARM: cpuidle: possible memleak

From: Daniel Lezcano <hidden>
Date: 2017-08-29 09:04:43
Also in: linux-pm

On 26/08/2017 13:46, Stefan Wahren wrote:

[ ... ]
quoted
diff --git a/drivers/cpuidle/cpuidle-arm.c b/drivers/cpuidle/cpuidle-arm.c
index 7080c38..827ab25 100644
--- a/drivers/cpuidle/cpuidle-arm.c
+++ b/drivers/cpuidle/cpuidle-arm.c
@@ -104,12 +104,14 @@ static int __init arm_idle_init(void)
 		ret = dt_init_idle_driver(drv, arm_idle_state_match, 1);
 		if (ret <= 0) {
 			ret = ret ? : -ENODEV;
+			kfree(drv);
 			goto out_fail;
 		}
 
 		ret = cpuidle_register_driver(drv);
 		if (ret) {
 			pr_err("Failed to register cpuidle driver\n");
+			kfree(drv);
 			goto out_fail;
 		}
I would prefer if you create another label on top of out_fail to free
'drv' and 'dev'. So you can remove the kfree in this loop (also take the
opportunity to remove the pr_err("Failed to allocate cpuidle device")
message.
should i split this patch (fix for "my" memleak and cleanup fix)?
Yes, please.

Thanks.

  -- Daniel

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