scripts/package/buildtar checks some kernel packages, and copies the
first image found. This may potentially produce an inconsistent (and
possibly wrong) package.
For instance, the for-loop for arm64 checks Image.{bz2,gz,lz4,lzma,lzo},
and vmlinuz.efi, then copies the first image found, which might be a
stale image.
When CONFIG_EFI_ZBOOT is enabled in the pristine source tree,
'make ARCH=arm64 tar-pkg' will build and copy vmlinuz.efi. This is the
expected behavior.
If you build the kernel with CONFIG_EFI_ZBOOT, Image.gz will be created,
which will remain in the build directory unless you clean it. Even if
CONFIG_EFI_ZBOOT is turned on later, 'make ARCH=arm64 tar-pkg' will copy
stale Image.gz instead of the latest vmlinuz.efi, as Image.gz takes
precedence over vmlinuz.efi.
In summary, the code "[ -f ... ] && cp" does not consistently produce
the desired outcome.
The other package scripts are deterministic; scripts/package/mkdebian,
for example, chooses a copied kernel image based on CONFIG options.
I removed [ -f ... ] checks from x86, alpha, parisc, and the default
because they have a single kernel image to copy. If it is missing, it
should be an error.
I did not modify the code for mips, arm64, riscv. Instead, I left some
comments. Eventually, someone may fix the code, or at the very least,
it may discourage the copy-pasting of incorrect code.
Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
---
scripts/package/buildtar | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/scripts/package/buildtar b/scripts/package/buildtar
index 72c91a1b832f..ed8d9b496305 100755
--- a/scripts/package/buildtar
+++ b/scripts/package/buildtar
@@ -53,18 +53,24 @@ cp -v -- "${objtree}/vmlinux" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}"
#
# Install arch-specific kernel image(s)
#
+# Note:
+# mips, arm64, and riscv copy the first image found. This may not produce
+# the desired outcome because it may pick up a stale file remaining in the
+# build tree.
+#
case "${ARCH}" in
x86|i386|x86_64)
- [ -f "${objtree}/arch/x86/boot/bzImage" ] && cp -v -- "${objtree}/arch/x86/boot/bzImage" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
+ cp -v -- "${objtree}/arch/x86/boot/bzImage" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
;;
alpha)
- [ -f "${objtree}/arch/alpha/boot/vmlinux.gz" ] && cp -v -- "${objtree}/arch/alpha/boot/vmlinux.gz" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
+ cp -v -- "${objtree}/arch/alpha/boot/vmlinux.gz" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
;;
parisc*)
- [ -f "${KBUILD_IMAGE}" ] && cp -v -- "${KBUILD_IMAGE}" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}"
+ cp -v -- "${KBUILD_IMAGE}" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}"
[ -f "${objtree}/lifimage" ] && cp -v -- "${objtree}/lifimage" "${tmpdir}/boot/lifimage-${KERNELRELEASE}"
;;
mips)
+ # Please note the following code may copy a stale file.
if [ -f "${objtree}/arch/mips/boot/compressed/vmlinux.bin" ]; then
cp -v -- "${objtree}/arch/mips/boot/compressed/vmlinux.bin" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
elif [ -f "${objtree}/arch/mips/boot/compressed/vmlinux.ecoff" ]; then
@@ -86,6 +92,7 @@ case "${ARCH}" in
fi
;;
arm64)
+ # Please note the following code may copy a stale file.
for i in Image.bz2 Image.gz Image.lz4 Image.lzma Image.lzo vmlinuz.efi ; do
if [ -f "${objtree}/arch/arm64/boot/${i}" ] ; then
cp -v -- "${objtree}/arch/arm64/boot/${i}" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
@@ -94,6 +101,7 @@ case "${ARCH}" in
done
;;
riscv)
+ # Please note the following code may copy a stale file.
for i in Image.bz2 Image.gz Image; do
if [ -f "${objtree}/arch/riscv/boot/${i}" ] ; then
cp -v -- "${objtree}/arch/riscv/boot/${i}" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}"
@@ -102,7 +110,7 @@ case "${ARCH}" in
done
;;
*)
- [ -f "${KBUILD_IMAGE}" ] && cp -v -- "${KBUILD_IMAGE}" "${tmpdir}/boot/vmlinux-kbuild-${KERNELRELEASE}"
+ cp -v -- "${KBUILD_IMAGE}" "${tmpdir}/boot/vmlinux-kbuild-${KERNELRELEASE}"
echo "" >&2
echo '** ** ** WARNING ** ** **' >&2
echo "" >&2
--
2.40.1
