Signed-off-by: Raphael Norwitz <[email protected]>
---
subprojects/libvhost-user/libvhost-user.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/subprojects/libvhost-user/libvhost-user.c
b/subprojects/libvhost-user/libvhost-user.c
index 573212a83b..80ef335254 100644
--- a/subprojects/libvhost-user/libvhost-user.c
+++ b/subprojects/libvhost-user/libvhost-user.c
@@ -690,6 +690,12 @@ vu_add_mem_reg(VuDev *dev, VhostUserMsg *vmsg) {
VuDevRegion *dev_region = &dev->regions[dev->nregions];
void *mmap_addr;
+ if (vmsg->fd_num != 1 ||
+ vmsg->size != sizeof(vmsg->payload.memreg)) {
+ vu_panic(dev, "VHOST_USER_REM_MEM_REG received multiple regions");
+ return true;
+ }
+
/*
* If we are in postcopy mode and we receive a u64 payload with a 0 value
* we know all the postcopy client bases have been received, and we
--
2.20.1
