Commit 37f31b6c authored by Richard Weinberger's avatar Richard Weinberger
Browse files

ubifs: Check for name being NULL while mounting 



The requested device name can be NULL or an empty string.
Check for that and refuse to continue. UBIFS has to do this manually
since we cannot use mount_bdev(), which checks for this condition.

Fixes: 1e51764a ("UBIFS: add new flash file system")
Reported-by: default avatar <syzbot+38bd0f7865e5c6379280@syzkaller.appspotmail.com>
Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent ae596de1

fs/ubifs/super.c

+3 −0
Original line number Diff line number Diff line
@@ -1954,6 +1954,9 @@ static struct ubi_volume_desc *open_ubi(const char *name, int mode) 
	int dev, vol;

	char *endptr;



	if (!name || !*name)

		return ERR_PTR(-EINVAL);



	/* First, try to open using the device node path method */

	ubi = ubi_open_volume_path(name, mode);

	if (!IS_ERR(ubi))