lkml.org 
[lkml]   [2020]   [Jul]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] vsock/virtio: annotate 'the_virtio_vsock' RCU pointer
On Fri, Jul 10, 2020 at 02:12:43PM +0200, Stefano Garzarella wrote:
> Commit 0deab087b16a ("vsock/virtio: use RCU to avoid use-after-free
> on the_virtio_vsock") starts to use RCU to protect 'the_virtio_vsock'
> pointer, but we forgot to annotate it.
>
> This patch adds the annotation to fix the following sparse errors:
>
> net/vmw_vsock/virtio_transport.c:73:17: error: incompatible types in comparison expression (different address spaces):
> net/vmw_vsock/virtio_transport.c:73:17: struct virtio_vsock [noderef] __rcu *
> net/vmw_vsock/virtio_transport.c:73:17: struct virtio_vsock *
> net/vmw_vsock/virtio_transport.c:171:17: error: incompatible types in comparison expression (different address spaces):
> net/vmw_vsock/virtio_transport.c:171:17: struct virtio_vsock [noderef] __rcu *
> net/vmw_vsock/virtio_transport.c:171:17: struct virtio_vsock *
> net/vmw_vsock/virtio_transport.c:207:17: error: incompatible types in comparison expression (different address spaces):
> net/vmw_vsock/virtio_transport.c:207:17: struct virtio_vsock [noderef] __rcu *
> net/vmw_vsock/virtio_transport.c:207:17: struct virtio_vsock *
> net/vmw_vsock/virtio_transport.c:561:13: error: incompatible types in comparison expression (different address spaces):
> net/vmw_vsock/virtio_transport.c:561:13: struct virtio_vsock [noderef] __rcu *
> net/vmw_vsock/virtio_transport.c:561:13: struct virtio_vsock *
> net/vmw_vsock/virtio_transport.c:612:9: error: incompatible types in comparison expression (different address spaces):
> net/vmw_vsock/virtio_transport.c:612:9: struct virtio_vsock [noderef] __rcu *
> net/vmw_vsock/virtio_transport.c:612:9: struct virtio_vsock *
> net/vmw_vsock/virtio_transport.c:631:9: error: incompatible types in comparison expression (different address spaces):
> net/vmw_vsock/virtio_transport.c:631:9: struct virtio_vsock [noderef] __rcu *
> net/vmw_vsock/virtio_transport.c:631:9: struct virtio_vsock *
>
> Fixes: 0deab087b16a ("vsock/virtio: use RCU to avoid use-after-free on the_virtio_vsock")
> Reported-by: Michael S. Tsirkin <mst@redhat.com>
> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
> ---
> net/vmw_vsock/virtio_transport.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2020-07-13 11:29    [W:0.080 / U:0.828 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site