On 15.12.21 г. 12:38, Shin'ichiro Kawasaki wrote:

The function btrfs_scan_one_device() calls blkdev_get_by_path() and
blkdev_put() to get and release its target block device. However, when
btrfs_sb_log_location_bdev() fails, blkdev_put() is not called and the
block device is left without clean up. This triggered failure of fstests
generic/085. Fix the failure path of btrfs_sb_log_location_bdev() to
call blkdev_put().

Fixes: 12659251ca5df ("btrfs: implement log-structured superblock for ZONED mode")
Signed-off-by: Shin'ichiro Kawasaki <redacted>
Cc: stable@vger.kernel.org # 5.15+
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Reviewed-by: Nikolay Borisov <redacted>