On Thu, Oct 06, 2022 at 09:50:28AM +0100, Fuad Tabba wrote:
> Hi,
>
> <...>
>
>
> > diff --git a/mm/memfd_inaccessible.c b/mm/memfd_inaccessible.c
> > new file mode 100644
> > index 000000000000..2d33cbdd9282
> > --- /dev/null
> > +++ b/mm/memfd_inaccessible.c
>
> <...>
>
> > +struct file *memfd_mkinaccessible(struct file *memfd)
> > +{
> > + struct inaccessible_data *data;
> > + struct address_space *mapping;
> > + struct inode *inode;
> > + struct file *file;
> > +
> > + data = kzalloc(sizeof(*data), GFP_KERNEL);
> > + if (!data)
> > + return ERR_PTR(-ENOMEM);
> > +
> > + data->memfd = memfd;
> > + mutex_init(&data->lock);
> > + INIT_LIST_HEAD(&data->notifiers);
> > +
> > + inode = alloc_anon_inode(inaccessible_mnt->mnt_sb);
> > + if (IS_ERR(inode)) {
> > + kfree(data);
> > + return ERR_CAST(inode);
> > + }
> > +
> > + inode->i_mode |= S_IFREG;
> > + inode->i_op = &inaccessible_iops;
> > + inode->i_mapping->private_data = data;
> > +
> > + file = alloc_file_pseudo(inode, inaccessible_mnt,
> > + "[memfd:inaccessible]", O_RDWR,
> > + &inaccessible_fops);
> > + if (IS_ERR(file)) {
> > + iput(inode);
> > + kfree(data);
>
> I think this might be missing a return at this point.
Good catch! Thanks!
--
Kiryl Shutsemau / Kirill A. Shutemov
