Author: vmaffione Date: Tue Jun 18 17:51:30 2019 New Revision: 349175 URL: https://svnweb.freebsd.org/changeset/base/349175
Log: bhyve: vtnet: fix locking on receive The vsc_rx_ready and the RX virtqueue is protected by the rx_mtx lock. However, pci_vtnet_ping_rxq() (currently called only once after each device reset) accesses those without acquiring the lock. Reviewed by: markj MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D20609 Modified: head/usr.sbin/bhyve/pci_virtio_net.c Modified: head/usr.sbin/bhyve/pci_virtio_net.c ============================================================================== --- head/usr.sbin/bhyve/pci_virtio_net.c Tue Jun 18 17:05:05 2019 (r349174) +++ head/usr.sbin/bhyve/pci_virtio_net.c Tue Jun 18 17:51:30 2019 (r349175) @@ -583,10 +583,12 @@ pci_vtnet_ping_rxq(void *vsc, struct vqueue_info *vq) /* * A qnotify means that the rx process can now begin */ + pthread_mutex_lock(&sc->rx_mtx); if (sc->vsc_rx_ready == 0) { sc->vsc_rx_ready = 1; vq_kick_disable(vq); } + pthread_mutex_unlock(&sc->rx_mtx); } static void _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
