util/memfd: report potential errors on free

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-ID: <20241008125028.1177932-9-marcandre.lureau@redhat.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/util/memfd.c b/util/memfd.c
index 4a3c07e0be..8a2e906962 100644
--- a/util/memfd.c
+++ b/util/memfd.c
@@ -28,6 +28,7 @@
 #include "qemu/osdep.h"
 
 #include "qapi/error.h"
+#include "qemu/error-report.h"
 #include "qemu/memfd.h"
 #include "qemu/host-utils.h"
 
@@ -149,11 +150,15 @@ err:
 void qemu_memfd_free(void *ptr, size_t size, int fd)
 {
     if (ptr) {
-        munmap(ptr, size);
+        if (munmap(ptr, size) != 0) {
+            error_report("memfd munmap() failed: %s", strerror(errno));
+        }
     }
 
     if (fd != -1) {
-        close(fd);
+        if (close(fd) != 0) {
+            error_report("memfd close() failed: %s", strerror(errno));
+        }
     }
 }