diff --git a/sys/fs/fuse/fuse_internal.c b/sys/fs/fuse/fuse_internal.c
--- a/sys/fs/fuse/fuse_internal.c
+++ b/sys/fs/fuse/fuse_internal.c
@@ -541,6 +541,7 @@
 	if (fuse_libabi_geq(data, 7, 12)) {
 		insize = sizeof(fmni);
 		fmni.umask = curthread->td_proc->p_pd->pd_cmask;
+		fmni.padding = 0;
 	} else {
 		insize = FUSE_COMPAT_MKNOD_IN_SIZE;
 	}