[PATCH 2/2] kvm: qemu: check device assignment command

["Han, Weidong" <weidong.han@xxxxxxxxx>]

Device assignment command is like "-pcidevice host=xx:yy.z".
Check bus:dev.func length to make sure its format is xx:yy.z.

Signed-off-by: Weidong Han <weidong.han@xxxxxxxxx>
---
 qemu/hw/device-assignment.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/qemu/hw/device-assignment.c b/qemu/hw/device-assignment.c
index cef7c8a..50a0d5c 100644
--- a/qemu/hw/device-assignment.c
+++ b/qemu/hw/device-assignment.c
@@ -1196,7 +1196,7 @@ out:
 AssignedDevInfo *add_assigned_device(const char *arg)
 {
     char *cp, *cp1;
-    char device[8];
+    char device[9];
     char dma[6];
     int r;
     AssignedDevInfo *adev;
@@ -1207,6 +1207,9 @@ AssignedDevInfo *add_assigned_device(const char *arg)
         return NULL;
     }
     r = get_param_value(device, sizeof(device), "host", arg);
+    /* b:d.f format: xx:yy.z */
+    if (r != 7)
+        goto bad;
     r = get_param_value(adev->name, sizeof(adev->name), "name", arg);
     if (!r)
 	snprintf(adev->name, sizeof(adev->name), "%s", device);
-- 
1.6.0.4

Attachment: 0002-kvm-qemu-check-device-assignment-command.patch
Description: 0002-kvm-qemu-check-device-assignment-command.patch