From b42d8f2f276092a23549d333ac4a34b1b5846c0e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Lesimple?= <speed47_github@speed47.net>
Date: Sun, 25 Mar 2018 12:53:50 +0200
Subject: [PATCH] fix(write_msr): use /dev/zero instead of manually echoing
 zeroes

---
 spectre-meltdown-checker.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spectre-meltdown-checker.sh b/spectre-meltdown-checker.sh
index b13a228..c055990 100755
--- a/spectre-meltdown-checker.sh
+++ b/spectre-meltdown-checker.sh
@@ -1280,7 +1280,7 @@ write_msr()
 	else
 		# convert to decimal
 		_msrindex=$(( $1 ))
-		_echo_nol -9 "\0\0\0\0\0\0\0\0" | dd of=/dev/cpu/"$2"/msr bs=8 count=1 seek="$_msrindex" oflag=seek_bytes 2>/dev/null; ret=$?
+		dd if=/dev/zero of=/dev/cpu/"$2"/msr bs=8 count=1 seek="$_msrindex" oflag=seek_bytes 2>/dev/null; ret=$?
 	fi
 	_debug "write_msr: for cpu $2 on msr $1 ($_msrindex), ret=$ret"
 	return $ret