linux-kernel - [PATCH v2] kbuild: deb-pkg: Don't fail if modules.order is missing

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Message-Id: <20241105205658.349180-1-matt@readmodwrite.com>
Date: Tue,  5 Nov 2024 20:56:58 +0000
From: Matt Fleming <matt@...dmodwrite.com>
To: Masahiro Yamada <masahiroy@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>
Cc: linux-kernel@...r.kernel.org,
	kernel-team@...udflare.com,
	Matt Fleming <mfleming@...udflare.com>,
	linux-kbuild@...r.kernel.org
Subject: [PATCH v2] kbuild: deb-pkg: Don't fail if modules.order is missing

From: Matt Fleming <mfleming@...udflare.com>

Kernels built without CONFIG_MODULES might still want to create -dbg deb
packages but install_linux_image_dbg() assumes modules.order always
exists. This obviously isn't true if no modules were built, so we should
skip reading modules.order in that case.

Fixes: 16c36f8864e3 ("kbuild: deb-pkg: use build ID instead of debug link for dbg package")
Cc: Masahiro Yamada <masahiroy@...nel.org>
Cc: linux-kbuild@...r.kernel.org
Signed-off-by: Matt Fleming <mfleming@...udflare.com>
---
 scripts/package/builddeb | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/scripts/package/builddeb b/scripts/package/builddeb
index 404587fc71fe..9739b0429337 100755
--- a/scripts/package/builddeb
+++ b/scripts/package/builddeb
@@ -96,6 +96,11 @@ install_linux_image_dbg () {
 
 	# Parse modules.order directly because 'make modules_install' may sign,
 	# compress modules, and then run unneeded depmod.
+	modules_file=modules.order
+	if [ ! -s $modules_file ]; then
+		modules_file=/dev/null
+	fi
+
 	while read -r mod; do
 		mod="${mod%.o}.ko"
 		dbg="${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/kernel/${mod}"
@@ -105,7 +110,7 @@ install_linux_image_dbg () {
 		mkdir -p "${dbg%/*}" "${link%/*}"
 		"${OBJCOPY}" --only-keep-debug "${mod}" "${dbg}"
 		ln -sf --relative "${dbg}" "${link}"
-	done < modules.order
+	done < $modules_file
 
 	# Build debug package
 	# Different tools want the image in different locations
-- 
2.34.1