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| author | Tobin C. Harding <tobin@kernel.org> | 2019-05-13 06:39:11 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2019-05-16 15:31:01 +0300 |
| commit | 450ff8348808a89cc27436771aa05c2b90c0eef1 (patch) | |
| tree | f3b1626d7b2620b987f9d0f2f06783fdf228466b /fs/btrfs/extent-tree.c | |
| parent | 72bd2323ec87722c115a5906bc6a1b31d11e8f54 (diff) | |
| download | linux-450ff8348808a89cc27436771aa05c2b90c0eef1.tar.xz | |
btrfs: sysfs: Fix error path kobject memory leak
If a call to kobject_init_and_add() fails we must call kobject_put()
otherwise we leak memory.
Calling kobject_put() when kobject_init_and_add() fails drops the
refcount back to 0 and calls the ktype release method (which in turn
calls the percpu destroy and kfree).
Add call to kobject_put() in the error path of call to
kobject_init_and_add().
Cc: stable@vger.kernel.org # v4.4+
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Tobin C. Harding <tobin@kernel.org>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/extent-tree.c')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index f79e477a378e..9bcb3570750e 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -3882,8 +3882,7 @@ static int create_space_info(struct btrfs_fs_info *info, u64 flags) info->space_info_kobj, "%s", alloc_name(space_info->flags)); if (ret) { - percpu_counter_destroy(&space_info->total_bytes_pinned); - kfree(space_info); + kobject_put(&space_info->kobj); return ret; } |