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@xxxxxxxxxx> --- drivers/vhost/vsock.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c index c9de9c41aa97..5a5e981bd8e4 100644 --- a/drivers/vhost/vsock.c +++ b/drivers/vhost/vsock.c @@ -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]; -- 2.13.6
