linux-kernel - RE: [RFCv2 11/11] remoteproc: Support virtio config space.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Tue, 15 Jan 2013 16:14:19 +0100
From:	Sjur BRENDELAND <sjur.brandeland@...ricsson.com>
To:	Ido Yariv <ido@...ery.com>
Cc:	Ohad Ben-Cohen <ohad@...ery.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Sjur Brændeland <sjur@...ndeland.net>
Subject: RE: [RFCv2 11/11] remoteproc: Support virtio config space.

Hi Ido,

> > +void rproc_virtio_get(struct virtio_device *vdev, unsigned offset,
> > +							void *buf, unsigned
> len)
> > +{
> > +	struct rproc_vdev *rvdev = vdev_to_rvdev(vdev);
> > +	void *cfg = &rvdev->rsc->vring[rvdev->rsc->num_of_vrings];
> > +	memcpy(buf, cfg + offset, len);
> > +}
> > +
> > +void rproc_virtio_set(struct virtio_device *vdev, unsigned offset,
> > +		      const void *buf, unsigned len)
> > +{
> > +	struct rproc_vdev *rvdev = vdev_to_rvdev(vdev);
> > +	void *cfg = &rvdev->rsc->vring[rvdev->rsc->num_of_vrings];
> > +	memcpy(cfg + offset, buf, len);
> >  }
> 
> Perhaps verify the offset and length to avoid overwriting memory?

OK, I'll add checks on size of the config space.

Regards,
Sjur
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/