From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org,
"Rafael J. Wysocki" <rafael@kernel.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Qu Wenruo <quwenruo.btrfs@gmx.com>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>
Subject: [PATCH v1] kobject: Restore old behaviour of kobject_del(NULL)
Date: Mon, 3 Aug 2020 10:38:59 +0300 [thread overview]
Message-ID: <20200803073859.43664-1-andriy.shevchenko@linux.intel.com> (raw)
The commit 079ad2fb4bf9 ("kobject: Avoid premature parent object freeing in
kobject_cleanup()") inadvertently dropped a possibility to call kobject_del()
with NULL pointer. Restore the old behaviour.
Fixes: 079ad2fb4bf9 ("kobject: Avoid premature parent object freeing in kobject_cleanup()")
Reported-by: Qu Wenruo <quwenruo.btrfs@gmx.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
lib/kobject.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/kobject.c b/lib/kobject.c
index 3afb939f2a1c..f5f5273031d2 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -637,7 +637,7 @@ static void __kobject_del(struct kobject *kobj)
*/
void kobject_del(struct kobject *kobj)
{
- struct kobject *parent = kobj->parent;
+ struct kobject *parent = kobj ? kobj->parent : NULL;
__kobject_del(kobj);
kobject_put(parent);
--
2.27.0
next reply other threads:[~2020-08-03 7:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-03 7:38 Andy Shevchenko [this message]
2020-08-03 8:13 ` [PATCH v1] kobject: Restore old behaviour of kobject_del(NULL) Greg Kroah-Hartman
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