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Date:	Sat, 26 Mar 2016 13:28:38 -0400
From:	Sasha Levin <sasha.levin@...cle.com>
To:	stable@...r.kernel.org, stable-commits@...r.kernel.org
Cc:	James Hogan <james.hogan@...tec.com>,
	Michal Marek <mmarek@...e.com>,
	Andi Kleen <ak@...ux.intel.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	linux-mips@...ux-mips.org, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org, Ralf Baechle <ralf@...ux-mips.org>,
	Sasha Levin <sasha.levin@...cle.com>
Subject: [added to the 4.1 stable tree] ld-version: Fix awk regex compile failure

From: James Hogan <james.hogan@...tec.com>

This patch has been added to the 4.1 stable tree. If you have any
objections, please let us know.

===============

[ Upstream commit 4b7b1ef2c2f83d702272555e8adb839a50ba0f8e ]

The ld-version.sh script fails on some versions of awk with the
following error, resulting in build failures for MIPS:

awk: scripts/ld-version.sh: line 4: regular expression compile failed (missing '(')

This is due to the regular expression ".*)", meant to strip off the
beginning of the ld version string up to the close bracket, however
brackets have a meaning in regular expressions, so lets escape it so
that awk doesn't expect a corresponding open bracket.

Fixes: ccbef1674a15 ("Kbuild, lto: add ld-version and ld-ifversion ...")
Reported-by: Geert Uytterhoeven <geert@...ux-m68k.org>
Signed-off-by: James Hogan <james.hogan@...tec.com>
Tested-by: Michael S. Tsirkin <mst@...hat.com>
Acked-by: Michael S. Tsirkin <mst@...hat.com>
Tested-by: Sudip Mukherjee <sudip.mukherjee@...ethink.co.uk>
Cc: Michal Marek <mmarek@...e.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: linux-mips@...ux-mips.org
Cc: linux-kbuild@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Cc: stable@...r.kernel.org # 4.4.x-
Patchwork: https://patchwork.linux-mips.org/patch/12838/
Signed-off-by: Ralf Baechle <ralf@...ux-mips.org>
Signed-off-by: Sasha Levin <sasha.levin@...cle.com>
---
 scripts/ld-version.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/ld-version.sh b/scripts/ld-version.sh
index 198580d..1659b40 100755
--- a/scripts/ld-version.sh
+++ b/scripts/ld-version.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/awk -f
 # extract linker version number from stdin and turn into single number
 	{
-	gsub(".*)", "");
+	gsub(".*\\)", "");
 	split($1,a, ".");
 	print a[1]*10000000 + a[2]*100000 + a[3]*10000 + a[4]*100 + a[5];
 	exit
-- 
2.5.0

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