On Thu, Dec 13, 2018 at 10:53:36AM +0800, Jason Wang wrote: > Hi: > > This series tries to fix various issues of vhost: > > - Patch 1 adds a missing write barrier between used idx updating and > logging. > - Patch 2-3 brings back the protection of device IOTLB through vq > mutex, this fixes possible use after free in device IOTLB entries. > > Please consider them for -stable. Acked-by: Michael S. Tsirkin <mst@xxxxxxxxxx> > Thanks > > Changes from V2: > - drop dirty page fix and make it for net-next > Changes from V1: > - silent compiler warning for 32bit. > - use mutex_trylock() on slowpath instead of mutex_lock() even on fast > path. > > Jason Wang (3): > vhost: make sure used idx is seen before log in vhost_add_used_n() > vhost_net: switch to use mutex_trylock() in vhost_net_busy_poll() > Revert "net: vhost: lock the vqs one by one" > > drivers/vhost/net.c | 8 +++++++- > drivers/vhost/vhost.c | 23 +++++++++++++++++++---- > 2 files changed, 26 insertions(+), 5 deletions(-) > > -- > 2.17.1
