Index: sys/compat/linux/linux_file.h
===================================================================
--- sys/compat/linux/linux_file.h
+++ sys/compat/linux/linux_file.h
@@ -36,6 +36,7 @@
 #define	LINUX_AT_EACCESS		0x200
 #define	LINUX_AT_REMOVEDIR		0x200
 #define	LINUX_AT_SYMLINK_FOLLOW		0x400
+#define	LINUX_AT_NO_AUTOMOUNT		0x800
 #define	LINUX_AT_EMPTY_PATH		0x1000
 
 /*
Index: sys/compat/linux/linux_stats.c
===================================================================
--- sys/compat/linux/linux_stats.c
+++ sys/compat/linux/linux_stats.c
@@ -774,7 +774,8 @@
 	int error, dirfd, flags, unsupported;
 	struct stat buf;
 
-	unsupported = args->flags & ~(LINUX_AT_SYMLINK_NOFOLLOW | LINUX_AT_EMPTY_PATH);
+	unsupported = args->flags & ~(LINUX_AT_SYMLINK_NOFOLLOW |
+	    LINUX_AT_EMPTY_PATH | LINUX_AT_NO_AUTOMOUNT);
 	if (unsupported != 0) {
 		linux_msg(td, "statx unsupported flags 0x%x", unsupported);
 		return (EINVAL);