Commit d5424838 authored Nov 16, 2015 by Michael S. Tsirkin

vhost: relax log address alignment



commit 5d9a07b0 ("vhost: relax used
address alignment") fixed the alignment for the used virtual address,
but not for the physical address used for logging.

That's a mistake: alignment should clearly be the same for virtual and
physical addresses,

Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

parent 2ac46030

drivers/vhost/vhost.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -819,7 +819,7 @@ long vhost_vring_ioctl(struct vhost_dev d, int ioctl, void __user argp)
		BUILD_BUG_ON(__alignof__ *vq->used > VRING_USED_ALIGN_SIZE);
		if ((a.avail_user_addr & (VRING_AVAIL_ALIGN_SIZE - 1)) \|\|
		(a.used_user_addr & (VRING_USED_ALIGN_SIZE - 1)) \|\|
		(a.log_guest_addr & (sizeof(u64) - 1))) {
		(a.log_guest_addr & (VRING_USED_ALIGN_SIZE - 1))) {
		r = -EINVAL;
		break;
		}