2 files changed, 3 insertions, 0 deletions
diff --git a/pkg/rootless/rootless_linux.c b/pkg/rootless/rootless_linux.c
index 41acd3475..ff39e9e77 100644
--- a/pkg/rootless/rootless_linux.c
+++ b/pkg/rootless/rootless_linux.c
@@ -277,6 +277,8 @@ reexec_in_user_namespace (int ready)
       _exit (EXIT_FAILURE);
     }
   close (ready);
+  if (b != '1')
+    _exit (EXIT_FAILURE);
 
   if (syscall_setresgid (0, 0, 0) < 0)
     {
diff --git a/pkg/rootless/rootless_linux.go b/pkg/rootless/rootless_linux.go
index 55fba900e..933cfa2c2 100644
--- a/pkg/rootless/rootless_linux.go
+++ b/pkg/rootless/rootless_linux.go
@@ -229,6 +229,7 @@ func BecomeRootInUserNS() (bool, int, error) {
 	}
 	defer r.Close()
 	defer w.Close()
+	defer w.Write([]byte("0"))
 
 	pidC := C.reexec_in_user_namespace(C.int(r.Fd()))
 	pid := int(pidC)