> diff --git a/fs/ioctl.c b/fs/ioctl.c > index 1e2204fa9963..d7edc92df473 100644 > --- a/fs/ioctl.c > +++ b/fs/ioctl.c > @@ -806,6 +806,8 @@ static int fileattr_set_prepare(struct inode *inode, > if (err) > return err; > > + if (!projid_valid(make_kprojid(&init_user_ns, fa->fsx_projid))) > + return -EINVAL; > /* And empty line before the comment would be nice for readability. Otherwise looks good: Reviewed-by: Christoph Hellwig <hch@xxxxxx>
