linux

iv/linux

History

Michael S. Tsirkin f7a36b03a7 vsock/virtio: suppress used length validation

It turns out that vhost vsock violates the virtio spec
by supplying the out buffer length in the used length
(should just be the in length).
As a result, attempts to validate the used length fail with:
vmw_vsock_virtio_transport virtio1: tx: used len 44 is larger than in buflen 0

Since vsock driver does not use the length fox tx and
validates the length before use for rx, it is safe to
suppress the validation in virtio core for this driver.

Reported-by: Halil Pasic <pasic@linux.ibm.com>
Fixes: 939779f5152d ("virtio_ring: validate used buffer length")
Cc: "Jason Wang" <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2021-11-22 14:49:03 +00:00

af_vsock_tap.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

af_vsock.c

vsock: prevent unnecessary refcnt inc for nonblocking connect

2021-11-10 14:36:11 +00:00

diag.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321

2019-06-05 17:37:05 +02:00

hyperv_transport.c

Drivers: hv: vmbus: Copy packets sent by Hyper-V out of the ring buffer