Commit a72b69dc authored Nov 09, 2017 by Stefan Hajnoczi Committed by Michael S. Tsirkin Nov 14, 2017

vhost/vsock: fix uninitialized vhost_vsock->guest_cid



The vhost_vsock->guest_cid field is uninitialized when /dev/vhost-vsock
is opened until the VHOST_VSOCK_SET_GUEST_CID ioctl is called.

kvmalloc(..., GFP_KERNEL | __GFP_RETRY_MAYFAIL) does not zero memory.
All other vhost_vsock fields are initialized explicitly so just
initialize this field too.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

parent ca2c5b33

drivers/vhost/vsock.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -518,6 +518,8 @@ static int vhost_vsock_dev_open(struct inode inode, struct file file)
		goto out;
		}

		vsock->guest_cid = 0; /* no CID assigned yet */

		atomic_set(&vsock->queued_replies, 0);

		vqs[VSOCK_VQ_TX] = &vsock->vqs[VSOCK_VQ_TX];