linux/drivers/vhost
Stefano Garzarella 49d8c5ffad vhost/vsock: fix incorrect used length reported to the guest
The "used length" reported by calling vhost_add_used() must be the
number of bytes written by the device (using "in" buffers).

In vhost_vsock_handle_tx_kick() the device only reads the guest
buffers (they are all "out" buffers), without writing anything,
so we must pass 0 as "used length" to comply virtio spec.

Fixes: 433fc58e6b ("VSOCK: Introduce vhost_vsock.ko")
Cc: stable@vger.kernel.org
Reported-by: Halil Pasic <pasic@linux.ibm.com>
Suggested-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20211122163525.294024-2-sgarzare@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
2021-11-24 19:00:28 -05:00
..
iotlb.c vhost-iotlb: Add an opaque pointer for vhost IOTLB 2021-09-06 07:20:57 -04:00
Kconfig vhost_vdpa: implement IRQ offloading in vhost_vdpa 2020-08-05 11:08:42 -04:00
Makefile vhost: introduce vDPA-based backend 2020-04-02 10:41:40 -04:00
net.c vhost_net: fix OoB on sendmsg() failure. 2021-09-09 10:52:12 +01:00
scsi.c vhost scsi: Convert to SPDX identifier 2021-09-05 16:23:08 -04:00
test.c tools/virtio: Add --reset 2020-06-22 12:34:21 -04:00
test.h tools/virtio: Add --reset 2020-06-22 12:34:21 -04:00
vdpa.c vdpa: Introduce and use vdpa device get, set config helpers 2021-11-01 05:26:49 -04:00
vhost.c vhost: Fix the calculation in vhost_overflow() 2021-08-11 06:44:15 -04:00
vhost.h vhost: fix up vhost_work coding style 2021-07-03 04:50:55 -04:00
vringh.c vringh: Use wiov->used to check for read/write desc order 2021-08-11 06:44:24 -04:00
vsock.c vhost/vsock: fix incorrect used length reported to the guest 2021-11-24 19:00:28 -05:00