isofs: fix potential memory leak in mount option parsing
authorChengguang Xu <cgxu519@gmx.com>
Sat, 14 Apr 2018 12:16:06 +0000 (20:16 +0800)
committerJan Kara <jack@suse.cz>
Mon, 16 Apr 2018 07:47:41 +0000 (09:47 +0200)
commit4f34a5130a471f32f2fe7750769ab4057dc3eaa0
treee862b0c04f12b3b019f953bd216e8b8400617ec8
parent96348e49366c6e2a5a2e62ba0350f66ef5d67ea7
isofs: fix potential memory leak in mount option parsing

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

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Jan Kara <jack@suse.cz>
fs/isofs/inode.c