This is a note to let you know that I've just added the patch titled
recordmcount.pl: fix typo in s390 mcount regex
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
recordmcount.pl-fix-typo-in-s390-mcount-regex.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4eb1782eaa9fa1c224ad1fa0d13a9f09c3ab2d80 Mon Sep 17 00:00:00 2001
From: Heiko Carstens <hca@xxxxxxxxxxxxx>
Date: Thu, 23 Dec 2021 17:43:14 +0100
Subject: recordmcount.pl: fix typo in s390 mcount regex
From: Heiko Carstens <hca@xxxxxxxxxxxxx>
commit 4eb1782eaa9fa1c224ad1fa0d13a9f09c3ab2d80 upstream.
Commit 85bf17b28f97 ("recordmcount.pl: look for jgnop instruction as well
as bcrl on s390") added a new alternative mnemonic for the existing brcl
instruction. This is required for the combination old gcc version (pre 9.0)
and binutils since version 2.37.
However at the same time this commit introduced a typo, replacing brcl with
bcrl. As a result no mcount locations are detected anymore with old gcc
versions (pre 9.0) and binutils before version 2.37.
Fix this by using the correct mnemonic again.
Reported-by: Miroslav Benes <mbenes@xxxxxxx>
Cc: Jerome Marchand <jmarchan@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Fixes: 85bf17b28f97 ("recordmcount.pl: look for jgnop instruction as well as bcrl on s390")
Link: https://lore.kernel.org/r/alpine.LSU.2.21.2112230949520.19849@xxxxxxxxxxxxx
Signed-off-by: Heiko Carstens <hca@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
scripts/recordmcount.pl | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/scripts/recordmcount.pl
+++ b/scripts/recordmcount.pl
@@ -219,7 +219,7 @@ if ($arch eq "x86_64") {
} elsif ($arch eq "s390" && $bits == 64) {
if ($cc =~ /-DCC_USING_HOTPATCH/) {
- $mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*c0 04 00 00 00 00\\s*(bcrl\\s*0,|jgnop\\s*)[0-9a-f]+ <([^\+]*)>\$";
+ $mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*c0 04 00 00 00 00\\s*(brcl\\s*0,|jgnop\\s*)[0-9a-f]+ <([^\+]*)>\$";
$mcount_adjust = 0;
}
$alignment = 8;
Patches currently in stable-queue which might be from hca@xxxxxxxxxxxxx are
queue-5.15/recordmcount.pl-fix-typo-in-s390-mcount-regex.patch
