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[kirkstone,09/27] kernel/linux-kernel-base: Fix kernel build artefact determinism issues

Message ID 4c302827365903b99a517651c2a14661ce78f79b.1676236110.git.steve@sakoman.com
State Accepted, archived
Commit 4c302827365903b99a517651c2a14661ce78f79b
Headers show
Series [kirkstone,01/27] python3-certifi: fix for CVE-2022-23491 | expand

Commit Message

Steve Sakoman Feb. 12, 2023, 9:10 p.m. UTC 
From: Richard Purdie <richard.purdie@linuxfoundation.org>

With the 6.1 kernel we've seen reproducibility/determinism issues where the kernel
seems to rebuild headers referencing the hostname or local user. kernel-devsrc
building after the kernel seemed to trigger it in some cases.

Moving the definitions to the bbclass used by all the kernel recipe code including
kernel-devsrc seems to be the best way to ensure this doesn't happen.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 60681baa97daf4f3856453c34d6be08b6771a81b)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
---
 meta/classes/kernel.bbclass            | 3 ---
 meta/classes/linux-kernel-base.bbclass | 4 ++++
 2 files changed, 4 insertions(+), 3 deletions(-)
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Patch

diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index 54b006550d..df740af41d 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -204,9 +204,6 @@  PACKAGES_DYNAMIC += "^${KERNEL_PACKAGE_NAME}-firmware-.*"
 
 export OS = "${TARGET_OS}"
 export CROSS_COMPILE = "${TARGET_PREFIX}"
-export KBUILD_BUILD_VERSION = "1"
-export KBUILD_BUILD_USER ?= "oe-user"
-export KBUILD_BUILD_HOST ?= "oe-host"
 
 KERNEL_RELEASE ?= "${KERNEL_VERSION}"
 
diff --git a/meta/classes/linux-kernel-base.bbclass b/meta/classes/linux-kernel-base.bbclass
index ba59222c24..73a6fe36d9 100644
--- a/meta/classes/linux-kernel-base.bbclass
+++ b/meta/classes/linux-kernel-base.bbclass
@@ -37,5 +37,9 @@  def linux_module_packages(s, d):
     suffix = ""
     return " ".join(map(lambda s: "kernel-module-%s%s" % (s.lower().replace('_', '-').replace('@', '+'), suffix), s.split()))
 
+export KBUILD_BUILD_VERSION = "1"
+export KBUILD_BUILD_USER ?= "oe-user"
+export KBUILD_BUILD_HOST ?= "oe-host"
+
 # that's all