livepatch/klp-build: Fix inconsistent kernel version

If .config hasn't been synced with auto.conf, any recent changes to
CONFIG_LOCALVERSION* may not get reflected in the kernel version name.

Use "make syncconfig" to force them to sync, and "make -s kernelrelease"
to get the version instead of having to construct it manually.

Fixes: 24ebfcd65a87 ("livepatch/klp-build: Introduce klp-build script for generating livepatch modules")
Closes: https://lore.kernel.org/20260217160645.3434685-10-joe.lawrence@redhat.com
Reported-by: Joe Lawrence <joe.lawrence@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
Acked-by: Song Liu <song@kernel.org>
Link: https://patch.msgid.link/20260310203751.1479229-10-joe.lawrence@redhat.com
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>

diff --git a/scripts/livepatch/klp-build b/scripts/livepatch/klp-build
index 809e198a561d54236419ea66a6299a8c5add3006..7b82c7503c2bf010a07d71aae00c54ea06f07c83 100755 (executable)
--- a/scripts/livepatch/klp-build
+++ b/scripts/livepatch/klp-build
@@ -285,15 +285,14 @@ set_module_name() {
 # application from appending it with '+' due to a dirty git working tree.
 set_kernelversion() {
        local file="$SRC/scripts/setlocalversion"
-       local localversion
+       local kernelrelease
 
        stash_file "$file"
 
-       localversion="$(cd "$SRC" && make --no-print-directory kernelversion)"
-       localversion="$(cd "$SRC" && KERNELVERSION="$localversion" ./scripts/setlocalversion)"
-       [[ -z "$localversion" ]] && die "setlocalversion failed"
+       kernelrelease="$(cd "$SRC" && make syncconfig &>/dev/null && make -s kernelrelease)"
+       [[ -z "$kernelrelease" ]] && die "failed to get kernel version"
 
-       sed -i "2i echo $localversion; exit 0" scripts/setlocalversion
+       sed -i "2i echo $kernelrelease; exit 0" scripts/setlocalversion
 }
 
 get_patch_files() {