From f90fc5472882ee7e76e0f345b9642b92c8677582 Mon Sep 17 00:00:00 2001 From: Anand Jain Date: Mon, 22 Jun 2015 18:18:32 +0800 Subject: [PATCH] Btrfs: Check if kobject is initialized before put Signed-off-by: Anand Jain Tested-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/sysfs.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index ea81a057c79b..603b0cc2b9bb 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -523,9 +523,11 @@ static void __btrfs_sysfs_remove_fsid(struct btrfs_fs_devices *fs_devs) fs_devs->device_dir_kobj = NULL; } - kobject_del(&fs_devs->super_kobj); - kobject_put(&fs_devs->super_kobj); - wait_for_completion(&fs_devs->kobj_unregister); + if (fs_devs->super_kobj.state_initialized) { + kobject_del(&fs_devs->super_kobj); + kobject_put(&fs_devs->super_kobj); + wait_for_completion(&fs_devs->kobj_unregister); + } } /* when fs_devs is NULL it will remove all fsid kobject */ -- 2.20.1