Message ID | 20180620054612.7747-1-cgxu519@gmx.com |
---|---|
State | Accepted, archived |
Headers | show |
Series | [v2] ext4: Check allocation failure when duplicating "data" in ext4_remount() | expand |
On Wed, Jun 20, 2018 at 01:46:12PM +0800, Chengguang Xu wrote: > There is no check for allocation failure when duplicating > "data" in ext4_remount(). Check for failure and return > error -ENOMEM in this case. > > Signed-off-by: Chengguang Xu <cgxu519@gmx.com> > Reviewed-by: Andreas Dilger <adilger@dilger.ca> Applied, thanks. - Ted
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 0c4c2201b3aa..f9c3da513cae 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -5014,6 +5014,9 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) #endif char *orig_data = kstrdup(data, GFP_KERNEL); + if (data && !orig_data) + return -ENOMEM; + /* Store the original options */ old_sb_flags = sb->s_flags; old_opts.s_mount_opt = sbi->s_mount_opt;