From 557df38b4ca6e4beecfa4fc3b8cfa89ad7466fb3 Mon Sep 17 00:00:00 2001
From: Jiri Slaby <jslaby@suse.cz>
Date: Mar 03 2023 11:25:16 +0000
Subject: scripts/tags.sh: fix incompatibility with PCRE2 (bsc#1012628).


---

diff --git a/patches.kernel.org/6.2.2-007-scripts-tags.sh-fix-incompatibility-with-PCRE2.patch b/patches.kernel.org/6.2.2-007-scripts-tags.sh-fix-incompatibility-with-PCRE2.patch
new file mode 100644
index 0000000..41788c7
--- /dev/null
+++ b/patches.kernel.org/6.2.2-007-scripts-tags.sh-fix-incompatibility-with-PCRE2.patch
@@ -0,0 +1,59 @@
+From: Carlos Llamas <cmllamas@google.com>
+Date: Wed, 15 Feb 2023 18:38:50 +0000
+Subject: [PATCH] scripts/tags.sh: fix incompatibility with PCRE2
+References: bsc#1012628
+Patch-mainline: 6.2.2
+Git-commit: 6ec363fc6142226b9ab5a6528f65333d729d2b6b
+
+commit 6ec363fc6142226b9ab5a6528f65333d729d2b6b upstream.
+
+Starting with release 10.38 PCRE2 drops default support for using \K in
+lookaround patterns as described in [1]. Unfortunately, scripts/tags.sh
+relies on such functionality to collect all_compiled_soures() leading to
+the following error:
+
+  $ make COMPILED_SOURCE=1 tags
+    GEN     tags
+  grep: \K is not allowed in lookarounds (but see PCRE2_EXTRA_ALLOW_LOOKAROUND_BSK)
+
+The usage of \K for this pattern was introduced in commit 4f491bb6ea2a
+("scripts/tags.sh: collect compiled source precisely") which speeds up
+the generation of tags significantly.
+
+In order to fix this issue without compromising the performance we can
+switch over to an equivalent sed expression. The same matching pattern
+is preserved here except \K is replaced with a backreference \1.
+
+[1] https://www.pcre.org/current/doc/html/pcre2syntax.html#SEC11
+
+Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Cc: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
+Cc: Masahiro Yamada <masahiroy@kernel.org>
+Cc: Jialu Xu <xujialu@vimux.org>
+Cc: Vipin Sharma <vipinsh@google.com>
+Cc: stable@vger.kernel.org
+Fixes: 4f491bb6ea2a ("scripts/tags.sh: collect compiled source precisely")
+Signed-off-by: Carlos Llamas <cmllamas@google.com>
+Link: https://lore.kernel.org/r/20230215183850.3353198-1-cmllamas@google.com
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Signed-off-by: Jiri Slaby <jslaby@suse.cz>
+---
+ scripts/tags.sh | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/scripts/tags.sh b/scripts/tags.sh
+index e137cf15..0d045182 100755
+--- a/scripts/tags.sh
++++ b/scripts/tags.sh
+@@ -91,7 +91,7 @@ all_compiled_sources()
+ 	{
+ 		echo include/generated/autoconf.h
+ 		find $ignore -name "*.cmd" -exec \
+-			grep -Poh '(?(?=^source_.* \K).*|(?=^  \K\S).*(?= \\))' {} \+ |
++			sed -n -E 's/^source_.* (.*)/\1/p; s/^  (\S.*) \\/\1/p' {} \+ |
+ 		awk '!a[$0]++'
+ 	} | xargs realpath -esq $([ -z "$KBUILD_ABS_SRCTREE" ] && echo --relative-to=.) |
+ 	sort -u
+-- 
+2.35.3
+
diff --git a/series.conf b/series.conf
index 59028a2..b5b9718 100644
--- a/series.conf
+++ b/series.conf
@@ -46,6 +46,7 @@
 	patches.kernel.org/6.2.2-004-vc_screen-don-t-clobber-return-value-in-vcs_rea.patch
 	patches.kernel.org/6.2.2-005-drm-amd-display-Move-DCN314-DOMAIN-power-contro.patch
 	patches.kernel.org/6.2.2-006-drm-amd-display-Properly-reuse-completion-struc.patch
+	patches.kernel.org/6.2.2-007-scripts-tags.sh-fix-incompatibility-with-PCRE2.patch
 
 	########################################################
 	# Build fixes that apply to the vanilla kernel too.