Commit 1666cf8c authored Nov 24, 2018 by xingaopeng Committed by Greg Kroah-Hartman Dec 05, 2018

ext2: initialize opts.s_mount_opt as zero before using it



commit e5f5b717983bccfa033282e9886811635602510e upstream.

We need to initialize opts.s_mount_opt as zero before using it, else we
may get some unexpected mount options.

Fixes: 08851957 ("ext2: Parse mount options into a dedicated structure")
CC: stable@vger.kernel.org
Signed-off-by: xingaopeng <xingaopeng@huawei.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 553927d6

fs/ext2/super.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -895,6 +895,7 @@ static int ext2_fill_super(struct super_block sb, void data, int silent)
		if (sb->s_magic != EXT2_SUPER_MAGIC)
		goto cantfind_ext2;

		opts.s_mount_opt = 0;
		/* Set defaults before we parse the mount options */
		def_mount_opts = le32_to_cpu(es->s_default_mount_opts);
		if (def_mount_opts & EXT2_DEFM_DEBUG)