diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index b0c4bed6e3..d2f481a347 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -863,8 +863,8 @@ static void kvm_mem_ioeventfd_add(MemoryListener *listener,
                                data, true, int128_get64(section->size),
                                match_data);
     if (r < 0) {
-        fprintf(stderr, "%s: error adding ioeventfd: %s\n",
-                __func__, strerror(-r));
+        fprintf(stderr, "%s: error adding ioeventfd: %s (%d)\n",
+                __func__, strerror(-r), -r);
         abort();
     }
 }
@@ -881,6 +881,8 @@ static void kvm_mem_ioeventfd_del(MemoryListener *listener,
                                data, false, int128_get64(section->size),
                                match_data);
     if (r < 0) {
+        fprintf(stderr, "%s: error deleting ioeventfd: %s (%d)\n",
+                __func__, strerror(-r), -r);
         abort();
     }
 }
@@ -897,8 +899,8 @@ static void kvm_io_ioeventfd_add(MemoryListener *listener,
                               data, true, int128_get64(section->size),
                               match_data);
     if (r < 0) {
-        fprintf(stderr, "%s: error adding ioeventfd: %s\n",
-                __func__, strerror(-r));
+        fprintf(stderr, "%s: error adding ioeventfd: %s (%d)\n",
+                __func__, strerror(-r), -r);
         abort();
     }
 }
@@ -916,6 +918,8 @@ static void kvm_io_ioeventfd_del(MemoryListener *listener,
                               data, false, int128_get64(section->size),
                               match_data);
     if (r < 0) {
+        fprintf(stderr, "%s: error deleting ioeventfd: %s (%d)\n",
+                __func__, strerror(-r), -r);
         abort();
     }
 }