From 3e32e8a96e6995cde3d8a13d68e31226ee83f290 Mon Sep 17 00:00:00 2001 From: "Eugene (jno) Dvurechenski" Date: Thu, 26 Nov 2015 15:45:35 +0100 Subject: [PATCH] virtio-scsi: don't crash without a valid device Make sure that we actually have a device when checking the aio context. Otherwise guests could trigger QEMU crashes. Signed-off-by: "Eugene (jno) Dvurechenski" Reviewed-by: David Hildenbrand Message-Id: <1448549135-6582-2-git-send-email-jno@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini --- hw/scsi/virtio-scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index 76554011cb..3a4f520fbb 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -250,7 +250,7 @@ static int virtio_scsi_do_tmf(VirtIOSCSI *s, VirtIOSCSIReq *req) int target; int ret = 0; - if (s->dataplane_started) { + if (s->dataplane_started && d) { assert(blk_get_aio_context(d->conf.blk) == s->ctx); } /* Here VIRTIO_SCSI_S_OK means "FUNCTION COMPLETE". */