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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-08-03 11:27:06 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-28 13:32:52 +0300 |
| commit | 40b8b826a6998639dd1c26f0e127f18371e1058d (patch) | |
| tree | d24f87d081592c1cd3cc86f85fbbad39c29f3a23 /lib/kobject.c | |
| parent | 4965b8cd1bc1ffb017e5c58e622da82b55e49414 (diff) | |
| download | linux-40b8b826a6998639dd1c26f0e127f18371e1058d.tar.xz | |
kobject: Restore old behaviour of kobject_del(NULL)
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()")
Cc: stable <stable@vger.kernel.org>
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>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Link: https://lore.kernel.org/r/20200803082706.65347-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/kobject.c')
| -rw-r--r-- | lib/kobject.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/kobject.c b/lib/kobject.c index 3afb939f2a1c..9dce68c378e6 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -637,8 +637,12 @@ static void __kobject_del(struct kobject *kobj) */ void kobject_del(struct kobject *kobj) { - struct kobject *parent = kobj->parent; + struct kobject *parent; + + if (!kobj) + return; + parent = kobj->parent; __kobject_del(kobj); kobject_put(parent); } |