openwrt/tools/dwarves/patches/100-reproducible-builds.patch

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tools/dwarves: update to v1.27 Update to the latest upstream version and add a patch that enables pahole reproducible builds if SOURCE_DATE_EPOCH is defined in the environment. This patch helps avoid BTF-related module loading problems with packages built separately from the kernel such as mac80211 or kselftests-bpf, e.g.: [ 16.858856] BPF: type_id=1185 bits_offset=0 [ 16.859099] BPF: [ 16.859199] BPF: Invalid name [ 16.859352] BPF: [ 16.859612] failed to validate module [cfg80211] BTF: -22 [ 17.015178] PPP generic driver version 2.4.2 [ 17.052703] NET: Registered PF_PPPOX protocol family [ 17.348722] BPF: type_id=1185 bits_offset=0 [ 17.348912] BPF: [ 17.348996] BPF: Invalid name [ 17.349106] BPF: [ 17.349220] failed to validate module [cfg80211] BTF: -22 [ 17.472070] kmodloader: 3 modules could not be probed [ 17.473133] kmodloader: - cfg80211 - 0 [ 17.473762] kmodloader: dependency not loaded cfg80211 [ 17.474421] kmodloader: - mac80211 - 1 [ 17.474988] kmodloader: dependency not loaded mac80211 [ 17.475632] kmodloader: dependency not loaded cfg80211 [ 17.476263] kmodloader: - mac80211_hwsim - 2 root@OpenWrt:/usr/libexec/kselftests-bpf# insmod bpf_testmod.ko [ 4735.776792] missing module BTF, cannot register kfuncs [ 4735.777371] missing module BTF, cannot register kfuncs [ 4735.777955] missing module BTF, cannot register kfuncs [ 4735.778452] missing module BTF, cannot register kfuncs Release Notes: https://lore.kernel.org/bpf/ZmjBHWw-Q5hKBiwA@x1/ Signed-off-by: Tony Ambardar <itugrok@yahoo.com> Link: https://github.com/openwrt/openwrt/pull/15697 Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
2024-02-28 23:04:57 +00:00
--- a/pahole.c
+++ b/pahole.c
@@ -3723,6 +3723,9 @@ int main(int argc, char *argv[])
goto out;
}
+ if (getenv("SOURCE_DATE_EPOCH") || getenv("KBUILD_BUILD_TIMESTAMP"))
+ conf_load.reproducible_build = true;
+
if (dwarves__init()) {
fputs("pahole: insufficient memory\n", stderr);
goto out;