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| author | Michael S. Tsirkin <mst@redhat.com> | 2015-11-16 15:57:08 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2015-12-07 16:27:54 +0100 |
| commit | d542483876f6ed720f573de3fbb1d8e60ccd0d6e (patch) | |
| tree | 0f2e54e6074bcc7a9131d61e840575b482f6bba6 /drivers/vhost | |
| parent | virtio-net: Stop doing DMA from the stack (diff) | |
| download | linux-d542483876f6ed720f573de3fbb1d8e60ccd0d6e.tar.xz linux-d542483876f6ed720f573de3fbb1d8e60ccd0d6e.zip | |
vhost: relax log address alignment
commit 5d9a07b0de512b77bf28d2401e5fe3351f00a240 ("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>
Diffstat (limited to 'drivers/vhost')
| -rw-r--r-- | drivers/vhost/vhost.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index eec2f11809ff..080422f5464f 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -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; } |