From 6593fd32d71a33f76462f347ef263e26600d998e Mon Sep 17 00:00:00 2001
From: Greg Steuck <blackgnezdo@gmail.com>
Date: Thu, 28 Jan 2021 23:04:10 -0800
Subject: pkg/build/openbsd: sync before umount (#2414)

Reported-by: syzbot+badc83af4aac6e58c236@syzkaller.appspotmail.com
---
 pkg/build/openbsd.go | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'pkg')

diff --git a/pkg/build/openbsd.go b/pkg/build/openbsd.go
index d09427849..a47579035 100644
--- a/pkg/build/openbsd.go
+++ b/pkg/build/openbsd.go
@@ -81,6 +81,7 @@ func (ctx openbsd) copyFilesToImage(overlayDir, outputDir string) error {
 	script := fmt.Sprintf(`set -eux
 OVERLAY="%s"
 # Cleanup in case something failed before.
+sync
 doas umount /altroot || true
 doas vnconfig -u vnd0 || true
 
@@ -88,6 +89,7 @@ doas /sbin/vnconfig vnd0 image
 doas mount /dev/vnd0a /altroot
 doas cp kernel /altroot/bsd
 test -d "$OVERLAY" && doas cp -Rf "$OVERLAY"/. /altroot
+sync
 doas umount /altroot
 doas vnconfig -u vnd0
 `, overlayDir)
-- 
cgit mrf-deployment