diff options
| author | Anel Orazgaliyeva <anelkz@amazon.de> | 2021-09-06 18:34:40 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-17 09:48:36 +0100 |
| commit | e577924b7021cd73294febae2f07f0b72754e323 (patch) | |
| tree | 37f5f1a62448726252d5cc559de561d48ac93c6c /drivers/cpuidle | |
| parent | 18fdbdbecf729e60c3e6c34c123aeabb34ddfb69 (diff) | |
cpuidle: Fix kobject memory leaks in error paths
[ Upstream commit e5f5a66c9aa9c331da5527c2e3fd9394e7091e01 ]
Commit c343bf1ba5ef ("cpuidle: Fix three reference count leaks")
fixes the cleanup of kobjects; however, it removes kfree() calls
altogether, leading to memory leaks.
Fix those and also defer the initialization of dev->kobj_dev until
after the error check, so that we do not end up with a dangling
pointer.
Fixes: c343bf1ba5ef ("cpuidle: Fix three reference count leaks")
Signed-off-by: Anel Orazgaliyeva <anelkz@amazon.de>
Suggested-by: Aman Priyadarshi <apeureka@amazon.de>
[ rjw: Subject edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/sysfs.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c index f8747322b3c7..e591f56f98c0 100644 --- a/drivers/cpuidle/sysfs.c +++ b/drivers/cpuidle/sysfs.c @@ -481,6 +481,7 @@ static int cpuidle_add_state_sysfs(struct cpuidle_device *device) &kdev->kobj, "state%d", i); if (ret) { kobject_put(&kobj->kobj); + kfree(kobj); goto error_state; } cpuidle_add_s2idle_attr_group(kobj); @@ -612,6 +613,7 @@ static int cpuidle_add_driver_sysfs(struct cpuidle_device *dev) &kdev->kobj, "driver"); if (ret) { kobject_put(&kdrv->kobj); + kfree(kdrv); return ret; } @@ -698,7 +700,6 @@ int cpuidle_add_sysfs(struct cpuidle_device *dev) if (!kdev) return -ENOMEM; kdev->dev = dev; - dev->kobj_dev = kdev; init_completion(&kdev->kobj_unregister); @@ -706,9 +707,11 @@ int cpuidle_add_sysfs(struct cpuidle_device *dev) "cpuidle"); if (error) { kobject_put(&kdev->kobj); + kfree(kdev); return error; } + dev->kobj_dev = kdev; kobject_uevent(&kdev->kobj, KOBJ_ADD); return 0; |