From 9bc42c18cb922ba1586394a72e4e05ee1cc3197c Mon Sep 17 00:00:00 2001
From: Edward Tomasz Napierala <trasz@FreeBSD.org>
Date: Tue, 30 Jun 2020 16:18:09 +0000
Subject: [PATCH] Make linux(4) ignore SA_INTERRUPT.  The zsh(1) binary from
 Bionic uses it.

MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D25499
---
 sys/compat/linux/linux_signal.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sys/compat/linux/linux_signal.c b/sys/compat/linux/linux_signal.c
index 1e01fbe69995..3393c8068a53 100644
--- a/sys/compat/linux/linux_signal.c
+++ b/sys/compat/linux/linux_signal.c
@@ -102,6 +102,10 @@ linux_to_bsd_sigaction(l_sigaction_t *lsa, struct sigaction *bsa)
 		flags &= ~LINUX_SA_RESTART;
 		bsa->sa_flags |= SA_RESTART;
 	}
+	if (lsa->lsa_flags & LINUX_SA_INTERRUPT) {
+		flags &= ~LINUX_SA_INTERRUPT;
+		/* Documented to be a "historical no-op". */
+	}
 	if (lsa->lsa_flags & LINUX_SA_ONESHOT) {
 		flags &= ~LINUX_SA_ONESHOT;
 		bsa->sa_flags |= SA_RESETHAND;