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-rw-r--r--subprojects/libvhost-user/libvhost-user.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/subprojects/libvhost-user/libvhost-user.c b/subprojects/libvhost-user/libvhost-user.c
index 3f4d722..2a1fa00 100644
--- a/subprojects/libvhost-user/libvhost-user.c
+++ b/subprojects/libvhost-user/libvhost-user.c
@@ -705,6 +705,14 @@ vu_add_mem_reg(VuDev *dev, VhostUserMsg *vmsg) {
return false;
}
+ if (dev->nregions == VHOST_USER_MAX_RAM_SLOTS) {
+ close(vmsg->fds[0]);
+ vu_panic(dev, "failing attempt to hot add memory via "
+ "VHOST_USER_ADD_MEM_REG message because the backend has "
+ "no free ram slots available");
+ return false;
+ }
+
/*
* 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