xfs: fix potential memory leak in mount option parsing
authorChengguang Xu <cgxu519@icloud.com>
Sun, 25 Feb 2018 20:17:31 +0000 (12:17 -0800)
committerDarrick J. Wong <darrick.wong@oracle.com>
Mon, 26 Feb 2018 18:02:13 +0000 (10:02 -0800)
commit5b4c845ea4f4b86c43096eb924354c83a2e26f3c
tree49d0741f02305b0b9169c4aeadeda594bfaae0d7
parentb31c2bdcd83e3374fec5a8e27a2fb4d26e771c52
xfs: fix potential memory leak in mount option parsing

When specifying string type mount option (e.g., logdev)
several times in a mount, current option parsing may
cause memory leak. Hence, call kfree for previous one
in this case.

Signed-off-by: Chengguang Xu <cgxu519@icloud.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
fs/xfs/xfs_super.c