Index: sys/compat/linux/linux_fork.c
===================================================================
--- sys/compat/linux/linux_fork.c
+++ sys/compat/linux/linux_fork.c
@@ -139,7 +139,6 @@
 	int exit_signal;
 	struct linux_emuldata *em;
 
-	f2 = 0;
 	if (LINUX_SIG_VALID(args->exit_signal)) {
 		exit_signal = linux_to_bsd_signal(args->exit_signal);
 	} else if (args->exit_signal != 0)
@@ -151,6 +150,8 @@
 		ff |= RFMEM;
 	if (args->flags & LINUX_CLONE_SIGHAND)
 		ff |= RFSIGSHARE;
+	if ((args->flags & LINUX_CLONE_CLEAR_SIGHAND) != 0)
+		f2 = FR2_DROPSIG_CAUGHT;
 	if (args->flags & LINUX_CLONE_FILES) {
 		if (!(args->flags & LINUX_CLONE_FS))
 			f2 |= FR2_SHARE_PATHS;