From: Raphael Norwitz Date: Wed, 12 Jun 2019 00:35:17 +0000 (-0700) Subject: vhost-user-scsi: prevent using uninitialized vqs X-Git-Tag: qemu-xen-4.14.0~499^2 X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=5d4c1ed3d46d7e2010b389fe5f3376f605182ab0;p=qemu-xen.git vhost-user-scsi: prevent using uninitialized vqs Of the 3 virtqueues, seabios only sets cmd, leaving ctrl and event without a physical address. This can cause vhost_verify_ring_part_mapping to return ENOMEM, causing the following logs: qemu-system-x86_64: Unable to map available ring for ring 0 qemu-system-x86_64: Verify ring failure on region 0 The qemu commit e6cc11d64fc998c11a4dfcde8fda3fc33a74d844 has already resolved the issue for vhost scsi devices but the fix was never applied to vhost-user scsi devices. Signed-off-by: Raphael Norwitz Reviewed-by: Stefan Hajnoczi Message-id: 1560299717-177734-1-git-send-email-raphael.norwitz@nutanix.com Message-Id: <1560299717-177734-1-git-send-email-raphael.norwitz@nutanix.com> Signed-off-by: Stefan Hajnoczi --- diff --git a/hw/scsi/vhost-user-scsi.c b/hw/scsi/vhost-user-scsi.c index 31c9d34637..6a6c15dd32 100644 --- a/hw/scsi/vhost-user-scsi.c +++ b/hw/scsi/vhost-user-scsi.c @@ -93,7 +93,7 @@ static void vhost_user_scsi_realize(DeviceState *dev, Error **errp) } vsc->dev.nvqs = 2 + vs->conf.num_queues; - vsc->dev.vqs = g_new(struct vhost_virtqueue, vsc->dev.nvqs); + vsc->dev.vqs = g_new0(struct vhost_virtqueue, vsc->dev.nvqs); vsc->dev.vq_index = 0; vsc->dev.backend_features = 0; vqs = vsc->dev.vqs;