Commit 4b33a191 authored by Kent Overstreet's avatar Kent Overstreet
Browse files

bcachefs: bch2_ioctl_disk_resize_journal(): check for integer truncation 



Reported-by: default avatarDan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: default avatarKent Overstreet <kent.overstreet@linux.dev>
parent 75e0c478

fs/bcachefs/chardev.c

+3 −0
Original line number Diff line number Diff line
@@ -627,6 +627,9 @@ static long bch2_ioctl_disk_resize_journal(struct bch_fs *c, 
	    arg.pad)

		return -EINVAL;



	if (arg.nbuckets > U32_MAX)

		return -EINVAL;



	ca = bch2_device_lookup(c, arg.dev, arg.flags);

	if (IS_ERR(ca))

		return PTR_ERR(ca);