Jason Wang 841df92241 vhost: make sure used idx is seen before log in vhost_add_used_n() ...

We miss a write barrier that guarantees used idx is updated and seen
before log. This will let userspace sync and copy used ring before
used idx is update. Fix this by adding a barrier before log_write().

Fixes: 8dd014adfea6f ("vhost-net: mergeable buffers support")
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2018-12-12 21:56:19 -08:00

..

Kconfig

vhost: allow vhost-scsi driver to be built-in

2018-08-22 01:01:32 +03:00

Kconfig.vringh

vhost: split out vringh Kconfig

2016-08-02 16:54:28 +03:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

net.c

net: vhost: remove bad code line

2018-10-07 21:31:32 -07:00

scsi.c

vhost/scsi: Use common handling code in request queue handler

2018-10-24 21:16:13 -04:00

test.c

treewide: kmalloc() -> kmalloc_array()

2018-06-12 16:19:22 -07:00

test.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

vhost.c

vhost: make sure used idx is seen before log in vhost_add_used_n()

2018-12-12 21:56:19 -08:00

vhost.h

vhost: switch to use new message format

2018-08-06 10:41:04 -07:00

vringh.c

treewide: kmalloc() -> kmalloc_array()

2018-06-12 16:19:22 -07:00

vsock.c

vhost/vsock: fix use-after-free in network stack callers

2018-12-06 14:28:38 -05:00