From 34ff0c0e6a221d4418b4a1f7d144013739fad76e Mon Sep 17 00:00:00 2001
From: Edward Tomasz Napierala <trasz@FreeBSD.org>
Date: Fri, 12 Jun 2020 14:25:32 +0000
Subject: [PATCH] Make linux(4) warn about unsupported fcntls.

MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D25231
---
 sys/compat/linux/linux_file.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sys/compat/linux/linux_file.c b/sys/compat/linux/linux_file.c
index 6df98769ea63..a77b61acd143 100644
--- a/sys/compat/linux/linux_file.c
+++ b/sys/compat/linux/linux_file.c
@@ -1371,9 +1371,10 @@ fcntl_common(struct thread *td, struct linux_fcntl_args *args)
 
 	case LINUX_F_DUPFD_CLOEXEC:
 		return (kern_fcntl(td, args->fd, F_DUPFD_CLOEXEC, args->arg));
+	default:
+		linux_msg(td, "unsupported fcntl cmd %d\n", args->cmd);
+		return (EINVAL);
 	}
-
-	return (EINVAL);
 }
 
 int