From: xingaopeng Date: Sat, 24 Nov 2018 11:21:59 +0000 (+0800) Subject: ext2: initialize opts.s_mount_opt as zero before using it X-Git-Tag: rel_imx_4.19.35_1.1.0~8120 X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=1666cf8c492d7a9b8b83e26eb139961a4c137b80;p=linux.git 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: 088519572ca8 ("ext2: Parse mount options into a dedicated structure") CC: stable@vger.kernel.org Signed-off-by: xingaopeng Signed-off-by: Jan Kara Signed-off-by: Greg Kroah-Hartman --- diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 73bd58fa13de..0c38e31ec938 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -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)