From 8345ea31dc6e1772726d1d0b8864dedac55038e0 Mon Sep 17 00:00:00 2001 From: Anand Jain Date: Fri, 20 Mar 2015 18:01:20 +0800 Subject: [PATCH] Btrfs: sysfs: fix, kobject pointer clean up needed after kobject release The sysfs clean up self test like in the below code fails, since fs_info->device_dir_kobject still points to its stale kobject. Reseting this pointer will help to fix this. open_ctree() { ret = btrfs_sysfs_add_one(fs_info); :: + btrfs_sysfs_remove_one(fs_info); + ret = btrfs_sysfs_add_one(fs_info); + if (ret) { + pr_err("BTRFS: failed to init sysfs interface: %d\n", ret); + goto fail_block_groups; + } Signed-off-by: Anand Jain Signed-off-by: David Sterba --- fs/btrfs/sysfs.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index ca0786190edd..f31fcec01e9c 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -525,6 +525,7 @@ void btrfs_sysfs_remove_one(struct btrfs_fs_info *fs_info) btrfs_kobj_rm_device(fs_info, NULL); kobject_del(fs_info->device_dir_kobj); kobject_put(fs_info->device_dir_kobj); + fs_info->device_dir_kobj = NULL; addrm_unknown_feature_attrs(fs_info, false); sysfs_remove_group(&fs_info->super_kobj, &btrfs_feature_attr_group); __btrfs_sysfs_remove_one(fs_info); -- 2.45.2