3 # Copyright (C) 2016-2023 Michael Jeanson <mjeanson@efficios.com>
5 # This program is free software: you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation, either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
21 platform
=${platforms:-}
22 cross_arch
=${cross_arch:-}
24 kgitrepo
=${kgitrepo:-}
25 mversion
=${mversion:-}
26 mgitrepo
=${mgitrepo:-}
31 # Derive arch from label if it isn't set
32 if [ -z "${arch:-}" ] ; then
33 # Labels may be platform specific, eg. jammy-amd64, deb12-armhf
34 regex
='[[:alnum:]]+-([[:alnum:]]+)'
35 if [[ "${platform}" =~
${regex} ]] ; then
36 arch
="${BASH_REMATCH[1]}"
45 # Kernel version compare functions
47 [ "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | head -n1)" ]
51 # shellcheck disable=SC2015
52 [ "$1" = "$2" ] && return 1 || verlte
"$1" "$2"
56 [ "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | tail -n1)" ]
60 # shellcheck disable=SC2015
61 [ "$1" = "$2" ] && return 1 || vergte
"$1" "$2"
71 message_len
="${#message}"
72 padding_len
=$
(( (80 - (message_len
)) / 2 ))
74 printf '\n'; printf -- '#%.0s' {1.
.80}; printf '\n'
75 printf -- '-%.0s' {1.
.80}; printf '\n'
76 printf -- '#%.0s' $
(seq 1 $padding_len); printf '%s' "$message"; printf -- '#%.0s' $
(seq 1 $padding_len); printf '\n'
77 printf -- '-%.0s' {1.
.80}; printf '\n'
78 printf -- '#%.0s' {1.
.80}; printf '\n\n'
83 git_clone_modules_sources
() {
84 mkdir
-p "$MODULES_GIT_DIR"
86 # If the version starts with "refs/", checkout the specific git ref, otherwise treat it
88 if [ "${mversion:0:5}" = "refs/" ]; then
89 git clone
--no-tags --depth=1 "${mgitrepo}" "$MODULES_GIT_DIR"
90 (cd "$MODULES_GIT_DIR" && git fetch origin
"${mversion}" && git checkout FETCH_HEAD
)
92 git clone
--no-tags --depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR"
96 # Checkout a shallow kernel tree of the specified tag
97 git_clone_linux_sources
() {
98 mkdir
-p "$LINUX_GIT_DIR"
99 git clone
--depth=1 -b "${ktag}" --reference "$LINUX_GIT_REF_REPO_DIR" "${kgitrepo}" "$LINUX_GIT_DIR"
103 # Export the kernel sources from the git repo
104 git_export_linux_sources
() {
106 git archive
"${ktag}" |
tar -x -C "$LINUX_SRCOBJ_DIR"
110 # Upload the tar archive to the object store
111 upload_archive_obj
() {
112 s3cmd
-c "$WORKSPACE/.s3cfg" put
"$WORKSPACE/$obj_name" "$obj_url_prefix/"
113 rm -f "$WORKSPACE/$obj_name"
117 extract_archive_obj
() {
118 tar -xf "$WORKSPACE/$obj_name" -C "$LINUX_OBJ_DIR" -I pbzip2
119 rm -f "$WORKSPACE/$obj_name"
125 tar -cf "$WORKSPACE/$obj_name" -I pbzip2 .
129 # List all GCC versions present in the PATH
133 IFS
=: read -r -a path_array
<<< "$PATH"
134 while read -r gcc
; do
136 done < <(find "${path_array[@]}" -maxdepth 1 -regex '.*/gcc-[0-9\.]+$' -printf '%f\n' |
sort -t- -k2 -V -r)
140 # Find the most recent GCC version supported by the kernel sources
143 # Enter linux source dir
144 cd "$LINUX_SRCOBJ_DIR"
146 # Get the kernel version using the host toolchain, some cross-compiled arch may be broken
147 kversion
=$
(unset ARCH
; unset CROSS_COMPILE
; make -s kernelversion
)
149 if [ "${cross_arch}" = "riscv64" ] && verlt
"${kversion}" "5.12"; then
150 echo "RISC-V support was upstreamed in kernel v4.19 but kprobes support was only added in v5.12. Don't try to build it."
154 if [ "${cross_arch}" = "arm64" ] && verlt
"${kversion}" "3.7"; then
155 echo "ARM64 support was added as of v3.7. Don't try to build it."
159 if [ "${cross_arch}" = "arm64" ] && verlt
"${kversion}" "3.18"; then
160 echo "lttng-modules requires gcc >= 5.1 for ARM64 due to compiler bugs in gcc."
161 echo "gcc-5 support was added to the kernel as of v3.18. Don't this to build it."
165 if { verlt
"$kversion" "4.4"; }; then
166 # Force gcc-4.8 for kernels before 4.4
167 selected_cc
='gcc-4.8'
168 # Due to compiler bugs in gcc on arm64, lttng-modules disallows
169 # compilation with gcc < 5.1.
170 if [[ "${cross_arch}" == "arm64" ]] ; then
171 selected_cc
='gcc-5.5'
172 export PATH
="${PATH:-}:/usr/local/gcc5.5/bin"
173 export LD_LIBRARY_PATH
="${LD_LIBRARY_PATH:-}:/usr/local/gcc5.5/lib"
175 selected_cc_version
=$
(echo "${selected_cc}" | cut
-d'-' -f2)
177 for cc
in $
(list_gccs
) ; do
178 if "${CROSS_COMPILE:-}${cc}" -I include
/ -D__LINUX_COMPILER_H -D__LINUX_COMPILER_TYPES_H -E include
/linux
/compiler-gcc.h
; then
179 cc_version
=$
(echo "${cc}" | cut
-d'-' -f2)
180 if { verlt
"${kversion}" "5.17"; } && { vergt "${cc_version}" "11"; } ; then
181 # Using gcc-12+ with '-Wuse-after-free' breaks the build of older
182 # kernels (in particular, objtool). Some releases on LTS
183 # branches between 4.x and 5.15 can be built with gcc-12.
184 # @see https://lore.kernel.org/lkml/20494.1643237814@turing-police/
185 # @see https://gitlab.com/linux-kernel/stable/-/commit/52a9dab6d892763b2a8334a568bd4e2c1a6fde66
189 selected_cc_version="$cc_version"
195 if [ -z "$selected_cc" ]; then
196 echo "Found no suitable compiler.
"
200 # lttng-modules requires gcc >= 5.1 for aarch64
201 # @see https://github.com/lttng/lttng-modules/commit/be06402dbdbea2f3394e60ec15c5d3356e2be416
202 if { verlt "${selected_cc_version}" "5.1"; } && [ "${cross_arch}" = "arm64
" ] ; then
203 echo "Building lttng-modules on aarch64 requires gcc
>= 5.1"
210 export_kbuild_flags() {
221 if { vergte "$selected_cc_version" "6"; }; then
222 # Older kernel Makefiles do not expect the compiler to default to PIE
229 _KCPPFLAGS+=(-fno-pie)
232 if { vergte "${selected_cc_version}" "10"; } && { verlt "${kversion}" "5.10"; } ; then
233 # gcc-10 changed the default from '-fcommon' to '-fno-common', which
234 # causes a linker failure. '-fcommon' can be set on the HOSTCFLAGS
235 # to avoid the issue.
236 # @see https://gitlab.com/linux-kernel/stable/-/commit/e33a814e772cdc36436c8c188d8c42d019fda639
237 _HOSTCFLAGS
+=(-fcommon)
240 if { verlt
"${kversion}" "5.14"; } && [ "${cross_arch:-}" == "armhf" ] ; then
241 # Work-around for producing instructions that aren't valid for the
242 # default architectures.
243 # Eg. Error: selected processor does not support `cpsid i' in ARM mode
244 _KCFLAGS
+=(-march=armv7-a
-mfpu=vfpv3-d16
)
245 _KCPPFLAGS
+=(-march=armv7-a
-mfpu=vfpv3-d16
)
248 if { vergt
"${selected_cc_version}" "8"; } && { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.17"; } ; then
249 # This was added to -Wall in gcc 9 but some kernels do not include the fixes
250 # @see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88583
251 _KCFLAGS+=(-Wno-error=packed-not-aligned)
254 export KAFLAGS="${_KAFLAGS[*]}"
255 export KCFLAGS="${_KCFLAGS[*]}"
256 export KCPPFLAGS="${_KCPPFLAGS[*]}"
257 export HOSTCFLAGS="${_HOSTCFLAGS[*]}"
258 export CC="${CROSS_COMPILE:-}${selected_cc}"
259 export HOSTCC="${selected_cc}"
264 HOSTCFLAGS="${HOSTCFLAGS:-}"
267 if [ -n "${DEBUG}" ] ; then
274 patch_linux_kernel() {
278 # Show the title of the patch in the build log
279 git -C "${LINUX_GIT_REF_REPO_DIR}" show --oneline -s "${commit_hash}"
281 # Apply patch, don't fail if it doesn't apply cleanly
283 git -C "${LINUX_GIT_REF_REPO_DIR}" format-patch -n1 --stdout "${commit_hash}" | patch -p1
286 if [ "$?
" -gt 1 ] ; then
287 echo "Serious issue patching
"
292 build_linux_kernel() {
293 cd "$LINUX_SRCOBJ_DIR"
295 kversion=$(make -s kernelversion "${make_args[@]}")
296 pahole_version="$
(pahole
--version |
tr -d 'v')"
298 if { verlt "${kversion}" "3.3"; } && [ "${vanilla_config}" = "imx_v6_v7_defconfig
" ] ; then
299 # imx_v6_v7 didn't exist before 06965c39b4c63933fa0a1cde2237ef85477c5655
300 if { verlt "${kversion}" "3.2"; } ; then
301 vanilla_config='mx5_defconfig'
303 vanilla_config='mx51_defconfig'
307 if { verlt "${kversion}" "3.13"; } && [ "${vanilla_config}" = "pseries_le_defconfig
" ] ; then
308 # pseries_le_deconfig was introduced in f53e462e907cbaed29c49c0f10f5b8f614e1bf1d
309 vanilla_config='pseries_defconfig'
312 # Generate kernel configuration
315 if [ "${cross_arch}" = "powerpc
" ] && vergte "${kversion}" "4.10"; then
316 echo "Ubuntu removed big endian powerpc configuration from kernel
>= 4.10. Don
't try to build it."
320 if [ "${cross_arch}" = "riscv64" ] && verlt "${kversion}" "6.2"; then
321 echo "Ubuntu added RISC-V config to their 'regular
' kernels in v6.2. Don't try to build it.
"
328 fakeroot debian/rules clean "${FAKEROOT_ARGS[@]}"
330 # Hack for kernel Ubuntu-hwe-5.8
331 # The debian/control file is produced by the clean target above, so this
332 # check needs to happen afterwards.
333 if [ ! -f "debian
/compat
" ] && ! grep -q debhelper-compat debian/control; then
334 echo "10" > "debian
/compat
"
337 # genconfigs check can fail in certain cases, eg. when a more recent
338 # compiler exposes kernel configuration flags which aren't set in the
339 # Ubuntu annotations.
340 # In any case, the configuration will be updated with any missing values
341 # later in our build script.
342 FAKEROOT_ARGS+=('do_skip_checks=true')
344 # Some Ubuntu tags default the toolchain using `gcc?=gcc-XX` in
345 # `debian/rules.d/0-common-vars.mk`. This may fail if the gcc version
346 # used as a default isn't available.
347 # For example, Ubuntu-6.8.0-7.7 sets `gcc?=gcc-13`, and that version
348 # of gcc isn't available on the deb12-amd64 ci-nodes.
349 # Work has also already been done in `select_compiler` to make our
350 # own decision of which compiler to use. As a result of both cases,
351 # our compiler choice should be passed into genconfigs.
352 FAKEROOT_ARGS+=("gcc
=${selected_cc}")
354 fakeroot debian/rules genconfigs "${FAKEROOT_ARGS[@]}"
355 cp CONFIGS/"${ubuntu_config}" .config
359 # Force 32bit build on i386, default is 64bit
360 if [ "$arch" = "i386
" ]; then
364 make "${vanilla_config}" "${make_args[@]}"
368 if [ "${vanilla_config}" = "pseries_defconfig
" ] && [ "${cross_arch}" = "ppc64el
" ] ; then
369 # @see diff <(git show v3.13:arch/powerpc/configs/pseries_defconfig) <(git show v3.13:arch/powerpc/configs/pseries_le_defconfig)
370 scripts/config --enable CONFIG_CPU_LITTLE_ENDIAN
371 scripts/config --enable CONFIG_CMA
372 scripts/config --disable CONFIG_XMON_DEFAULT
373 # scripts/config --disable CONFIG_VIRTUALIZATION
374 # scripts/config --disable CONFIG_KVM_BOOK3S_64
375 scripts/config --disable CONFIG_KVM_BOOK3S_64_HV
378 # oldnoconfig was renamed in 4.19
379 if vergte "$kversion" "4.19"; then
380 update_conf_target="olddefconfig
"
382 update_conf_target="oldnoconfig
"
385 # Fix 'defined(@array)' was removed from recent perl
386 if [ -f "kernel
/timeconst.pl
" ]; then
387 sed -i 's/defined(\@\(.*\))/@\1/' kernel/timeconst.pl
390 # Fix syntax of inline assembly which is confused with C++11 raw strings on gcc >= 5
391 if [ "$HOSTCC" != "gcc-4.8
" ]; then
392 if [ -f "arch
/x86
/kvm
/svm.c
" ]; then
393 sed -i 's/ R"/ R
"/g; s/"R
"/" R
"/g' arch/x86/kvm/svm.c
396 if [ -f "arch
/x86
/kvm
/vmx.c
" ]; then
397 sed -i 's/ R"/ R
"/g; s/"R
"/" R
"/g' arch/x86/kvm/vmx.c
401 if { verlt "${kversion}" "5.11"; } && { vergte "${kversion}" "4.10"; } ; then
402 # Binutils > 2.35 strips empty symbol tables, causing obltool to fail
403 # in certain cases when files are empty.
404 # @see https://gitlab.com/linux-kernel/stable/-/commit/1d489151e9f9d1647110277ff77282fe4d96d09b
406 # There doesn't seem to be any LD/AS/AR flags to control this behaviour,
407 # therefore patching tools/objtool/elf.c is attempted.
408 patch_linux_kernel
1d489151e9f9d1647110277ff77282fe4d96d09b
409 if { verlt
"${kversion}" "4.18"; } ; then
410 patch_linux_kernel e81e0724432542af8d8c702c31e9d82f57b1ff31
414 if { vergt
"${selected_cc_version}" "7"; } && { vergte "${kversion}" "4.14"; } && { verlt "${kversion}" "4.17"; } ; then
415 # Builds fail due to -Werror=restrict in pager.o and str_error_r.o
416 if { verlt "${kversion}" "4.16"; } ; then
417 # This is patched since objtool's Makefile doesn't respect HOSTCFLAGS
418 # @see https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad343a98e74e85aa91d844310e797f96fee6983b
419 patch_linux_kernel ad343a98e74e85aa91d844310e797f96fee6983b
421 if { verlt "${kversion}" "4.17"; } ; then
422 # This is patched since objtool's Makefile doesn't respect HOSTCFLAGS
423 # @see https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=854e55ad289ef8888e7991f0ada85d5846f5afb9
424 patch_linux_kernel 854e55ad289ef8888e7991f0ada85d5846f5afb9
429 if { vergt "${selected_cc_version}" "9"; } && { verlt "${kversion}" "5.6"; } ; then
430 # Duplicate decalarations of __force_order
431 # @see https://gitlab.com/linux-kernel/stable/-/commit/df6d4f9db79c1a5d6f48b59db35ccd1e9ff9adfc
432 # However, kaslr_64.c doesn't exit in 4.15, 4.16, it's named pagetable.c
433 if [ -f arch
/x86
/boot
/compressed
/pagetable.c
] ; then
434 sed -i '/^unsigned long __force_order;$/d' arch
/x86
/boot
/compressed
/pagetable.c
436 if [ -f arch
/x86
/boot
/compressed
/kaslr_64.c
] ; then
437 patch_linux_kernel df6d4f9db79c1a5d6f48b59db35ccd1e9ff9adfc
441 if { vergte
"${kversion}" "4.18"; } && { verlt "${kversion}" "4.19"; } ; then
442 # In some cases, compiling net/bpfilter can fail with the following error:
443 # net/bpfilter/main.c:9:10: fatal error: include/uapi/linux/bpf.h: No such file or directory
444 # make[2]: *** [scripts/Makefile.host:107: net/bpfilter/main.o] Error 1
446 # While the issue is potentially in a number of old versions, it has only
447 # been observed in v4.18-rt
449 patch_linux_kernel 303a339f30a9441c4695d3d2cc78f1b33cd959ff
452 if { vergte "${kversion}" "4.18"; } && { verlt "${kversion}" "4.19"; } ; then
453 # In some cases, compiling net/bpfilter can fail with the following error:
454 # net/bpfilter/main.c:9:10: fatal error: include/uapi/linux/bpf.h: No such file or directory
455 # make[2]: *** [scripts/Makefile.host:107: net/bpfilter/main.o] Error 1
457 # While the issue is potentially in a number of old versions, it has only
458 # been observed in v4.18-rt
460 patch_linux_kernel
303a339f30a9441c4695d3d2cc78f1b33cd959ff
463 if { vergte
"${kversion}" "4.15"; } && { verlt "${kversion}" "4.18"; } ; then
464 # Some old kernels fail to build when make is too new
465 # @see https://gitlab.com/linux-kernel/stable/-/commit/9feeb638cde083c737e295c0547f1b4f28e99583
466 patch_linux_kernel 9564a8cf422d7b58f6e857e3546d346fa970191e
469 if { vergte "${kversion}" "4.14"; } && { verlt "${kversion}" "4.14.55"; } ; then
470 # Some old kernels fail to build when make is too new
471 # @see https://gitlab.com/linux-kernel/stable/-/commit/9feeb638cde083c737e295c0547f1b4f28e99583
472 patch_linux_kernel e82885490a611f2b75a6c27cd7bb09665c1740be
475 if ( { vergte
"${kversion}" "4.15"; } && { verlt "${kversion}" "4.18"; } ) || \
476 ( { vergte "${kversion}" "4.14"; } && { verlt "${kversion}" "4.14.56"; } ) ; then
477 # Some old kernels fail to build when make is too new
478 # @see https://gitlab.com/linux-kernel/stable/-/commit/9feeb638cde083c737e295c0547f1b4f28e99583
479 patch_linux_kernel
9feeb638cde083c737e295c0547f1b4f28e99583
482 if ( { vergte
"${kversion}" "4.12"; } && { verlt "${kversion}" "4.20.17"; } ) || \
483 ( { vergte "${kversion}" "5.0"; } && { verlt "${kversion}" "5.0.12"; } ) ; then
484 # Old kernels can fail to build while on newer host kernels with errors
486 # In file included from scripts/selinux/genheaders/genheaders.c:19:
487 # ./security/selinux/include/classmap.h:249:2: error: #error New address family defined, please update secclass_map.
488 # @see https://gitlab.com/linux-kernel/stable/-/commit/dfbd199a7cfe3e3cd8531e1353cdbd7175bfbc5e
490 patch_linux_kernel dfbd199a7cfe3e3cd8531e1353cdbd7175bfbc5e
493 # Compatibility with binutils >= ~ 2.31
494 if { vergte
"${kversion}" "3.19"; } && { verlt "${kversion}" "4.16"; } ; then
495 patch_linux_kernel b21ebf2fb4cde1618915a97cc773e287ff49173e
497 if { vergte "${kversion}" "3.17"; } && { verlt "${kversion}" "3.18.69"; } ; then
498 patch_linux_kernel edb9d2d5e647e7a8521b0d35f8452deb02dfd138
500 if { vergte
"${kversion}" "3.17"; } && { verlt "${kversion}" "3.18.100"; } ; then
501 patch_linux_kernel 3be6583f0b6f1bf1ee650ebf473d9dee36836527
502 patch_linux_kernel 12d839211d080f6a9c370398c41a260365d34c62
504 if { vergte "${kversion}" "3.16"; } && { verlt "${kversion}" "3.16.82"; } ; then
505 patch_linux_kernel ad10e6d464796f2a481de4039a43b9cfca034e1c
508 if ( { vergte
"${kversion}" "3.14"; } && { verlt "${kversion}" "4.4"; } ) ||
509 ( { vergte "${kversion}" "4.8"; } && { verlt "${kversion}" "4.18"; } ); then
510 # While the original motivation of this patch is for fixing builds using
511 # clang, the same error occurs between linux >= 3.14 and < 4.4, and in
513 # For rt-linux, the error has been observed in 4.8, 4.11, and 4.13.
515 # This patch only partially applies due to changes in kernel/Makefile,
516 # so a supplementary patch is needed
518 # Without this patch, builds fail with
519 # Cannot find symbol for section 2: .text.
520 # kernel/elfcore.o: failed
522 # @see https://github.com/linuxppc/issues/issues/388
523 # @see https://lore.kernel.org/lkml/20201204165742.3815221-2-arnd@kernel.org/
525 patch_linux_kernel
6e7b64b9dd6d96537d816ea07ec26b7dedd397b9
526 if grep -q elfcore.o kernel
/Makefile
; then
527 sed -i '/^.* += elfcore.o$/d' kernel
/Makefile
530 # Same as above for the v4.4 branch
531 if ( { vergte
"${kversion}" "4.4"; } && { verlt "${kversion}" "4.4.257"; } ); then
532 patch_linux_kernel 3140b0740b31cc63cf2ee08bc3f746b423eb068d
533 if grep -q elfcore.o kernel/Makefile ; then
534 sed -i '/^.* += elfcore.o$/d' kernel/Makefile
538 if { vergte "${kversion}" "4.5"; } && { verlt "${kversion}" "4.8"; } ; then
539 # Kernels between v4.5 and v4.8 built with gcc >= 8 on arm will hit an
542 # kernel/.tmp_fork.s: Assembler messages:
543 # kernel/.tmp_fork.s:1790: Error: .err encountered
545 # @see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85745
547 patch_linux_kernel
9f73bd8bb445e0cbe4bcef6d4cfc788f1e184007
550 if ( { vergte
"${kversion}" "4.4"; } && { verlt "${kversion}" "4.4.136"; } ) ||
551 ( { vergte "${kversion}" "4.5"; } && { verlt "${kversion}" "4.8"; } ); then
552 # Hacky patch to deal with the following build error:
553 # Cannot find symbol for section 7: .text.unlikely.
554 # kernel/kexec_file.o: failed
555 # make[1]: *** [scripts/Makefile.build:291: kernel/kexec_file.o] Error 1
557 # This error happens with binutils 2.36 and 2.37, but should probably not
558 # be an issue with binutils 2.38.
559 # @see https://github.com/linuxppc/issues/issues/388
560 # @see https://github.com/bminor/binutils-gdb/commit/c09c8b42021180eee9495bd50d8b35e683d3901b
562 # There is some sort of config (unspecified in past discussions) which
563 # provokes the error, and there was never a potential fix merged in
564 # this discussion, in part because the build systems of the kernel
565 # switched to objtool instead.
567 # @see https://lore.kernel.org/all/20210215162209.5e2a475b@gandalf.local.home/
569 sed -i 's/return txtname;/return shdr0->sh_size ? txtname : NULL;/' scripts
/recordmcount.h
571 # After applying the above patch, the build continues but fails with
572 # head64.c:(.text.exit+0x5): undefined reference to `__gcov_exit'
574 scripts
/config
--disable CONFIG_GCOV_KERNEL
577 if { vergte
"${kversion}" "4.5"; } && { verlt "${kversion}" "4.5.5"; } ; then
578 # drivers/staging/wilc1000/wilc_spi.c:123:34: error: storage size of ‘wilc1000_spi_ops’ isn’t known
579 patch_linux_kernel ce7b516f3f9e11fe4ee06fad0d7e853bb6e8f160
582 # Newer binutils don't accept 3 operand 'cmp' instructions on ppc64
583 # Convert them to 'cmpw' which was previously done silently
584 if verlt "$kversion" "4.9"; then
585 find arch/powerpc/ -name "*.S
" -print0 | xargs -0 sed -i "s
/\
(cmp\
)\
(\s\
+[a-zA-Z0-9
]\
+,\s
*[a-zA-Z0-9
]\
+,\s
*[a-zA-Z0-9
]\
+\
)/cmpw\
2/"
586 find arch/powerpc/ -name "*.S
" -print0 | xargs -0 sed -i "s
/\
(cmpli\
)\
(\s\
+[a-zA-Z0-9
]\
+,\s
*[a-zA-Z0-9
]\
+,\s
*[a-zA-Z0-9
]\
+\
)/cmplwi\
2/"
587 sed -i "s
/\
$pie \
-o \"\
$ofile\"/\
$pie --no-dynamic-linker -o \"\
$ofile\"/" arch/powerpc/boot/wrapper
590 if [ "$
(scripts
/config
--state CONFIG_EXTCON_ADC_JACK
)" != "n
" ] &&
591 ( { vergte "${kversion}" "4.2"; } && { verlt "${kversion}" "4.12"; } ); then
592 # 73b6ecdb93e8e77752cae9077c424fcdc6f23c39 introduced a change where
593 # extcon-adc-jack.h has an incompatible pointer type.
594 # In GCC >= 5 this will provoke a warning and build failure.
596 # drivers/extcon/extcon-adc-jack.c: In function ‘adc_jack_probe’:
597 # drivers/extcon/extcon-adc-jack.c:111:64: error: passing argument 2 of ‘devm_extcon_dev_allocate’ from incompatible pointer type [-Werror=incompatible-pointer-types]
598 # make[2]: *** [scripts/Makefile.build:295: drivers/extcon/extcon-adc-jack.o] Error 1
600 # 8a522bf2d4f788306443d36b26b54f0aedcdfdbe (in 4.11) has a fix for this warning
602 patch_linux_kernel
8a522bf2d4f788306443d36b26b54f0aedcdfdbe
605 if ( { vergte
"${kversion}" "4.15"; } && { verlt "${kversion}" "4.15.2"; } ) || \
606 ( { vergte "${kversion}" "4.14"; } && { verlt "${kversion}" "4.14.18"; } ) ; then
607 # Fix an objtool Segmentation fault
608 patch_linux_kernel dd12561854824fd1f05baf2a1b794faa046e2425
611 if { vergte
"${kversion}" "4.14"; } && { verlt "${kversion}" "4.14.268"; } ; then
612 # Builds fail due to -Werror=use-after-free in sigchain.o and help.o
613 patch_linux_kernel e89bb266b710ce056f141f29f091fd468a4a8185
616 # Fix a typo in v2.6.36.x
617 if [ -f "arch
/x86
/kernel
/entry_64.S
" ]; then
618 sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch/x86/kernel/entry_64.S
621 # Fix compiler switch in vdso Makefile for 2.6.36 to 2.6.36.2
622 if { vergte "$kversion" "2.6.36" && verlte "$kversion" "2.6.36.3"; }; then
623 sed -i 's/-m elf_x86_64/-m64/' arch/x86/vdso/Makefile
624 sed -i 's/-m elf_i386/-m32/' arch/x86/vdso/Makefile
627 # Fix kernel < 3.0 with gcc >= 4.7
628 if verlt "$kversion" "3.0"; then
629 sed -i '/linux\/compiler.h/a #include <linux\/linkage.h> \/* For asmregparm *\/' arch/x86/include/asm/ptrace.h
630 sed -i 's/extern long syscall_trace_enter/extern asmregparm long syscall_trace_enter/' arch/x86/include/asm/ptrace.h
631 sed -i 's/extern void syscall_trace_leave/extern asmregparm void syscall_trace_leave/' arch/x86/include/asm/ptrace.h
632 echo "header-y
+= linkage.h
" >> include/linux/Kbuild
635 if [ "${cross_arch}" = "powerpc
" ] ; then
636 if { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.16"; } ; then
637 # Avoid register errors such as
638 # aes_generic.c:(.text+0x4e0): undefined reference to `_restgpr_31_x'
639 # @see https://gitlab.com/linux-kernel/stable/-/commit/148b974deea927f5dbb6c468af2707b488bfa2de
641 CFLAGS_aes_generic.o
=''
646 if [ "$(scripts/config --state CONFIG_DEBUG_INFO_BTF)" == "y" ] &&
647 { vergte
"${pahole_version}" "1.24"; } &&
648 { vergte
"${kversion}" "5.10"; } && { verlt "${kversion}" "6.0"; } ;then
649 # Some kernels Eg. Ubuntu-hwe-5.13-5.13.0-52.59_20.04.1
650 # fail with the following error:
652 # FAILED: load BTF from vmlinux: Invalid argument
654 # When CONFIG_DEBUG_INFO_BTF is set, certain versions of pahole require
655 # `--skip_encoding_btf_enum64` to be passed as the kernel doesn't define
658 # Introduced in 341dfcf8d78eaa3a2dc96dea06f0392eb2978364 (~v5.10)
659 # @see https://lore.kernel.org/bpf/20220825171620.cioobudss6ovyrkc@altlinux.org/t/
661 if [ -f "scripts
/pahole-flags.sh
" ] ; then
662 # shellcheck disable=SC2016
663 sed -i 's/ -J ${PAHOLE_FLAGS} / -J ${PAHOLE_FLAGS} --skip_encoding_btf_enum64 /' scripts/link-vmlinux.sh
665 # shellcheck disable=SC2016
666 sed -i 's/ -J ${extra_paholeopt} / -J ${extra_paholeopt} --skip_encoding_btf_enum64 /' scripts/link-vmlinux.sh
671 if [ "$HOSTCC" == "gcc-4.8
" ]; then
672 scripts/config --disable CONFIG_CC_STACKPROTECTOR_STRONG
673 scripts/config --disable CONFIG_PPC_OF_BOOT_TRAMPOLINE
676 # Don't try to sign modules
677 scripts/config --disable CONFIG_MODULE_SIG
679 # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
680 scripts/config --disable CONFIG_STACK_VALIDATION
682 # Cause problems with inline assembly on i386
683 scripts/config --disable CONFIG_DEBUG_SECTION_MISMATCH
685 # Don't build samples, they are broken on some kernel releases
686 scripts/config --disable CONFIG_SAMPLES
687 scripts/config --disable CONFIG_BUILD_DOCSRC
690 scripts/config --disable CONFIG_KCOV
692 # Broken on some RT kernels
693 scripts/config --disable CONFIG_HYPERV
696 scripts/config --disable CONFIG_RAPIDIO_TSI721
697 scripts/config --disable CONFIG_SGI_XP
698 scripts/config --disable CONFIG_MFD_WM8994
699 scripts/config --disable CONFIG_DRM_RADEON
700 scripts/config --disable CONFIG_SND_SOC_WM5100
701 # More recent compiler optimizations (from gcc 8 onwards )expose build errors
702 # with netronome on older kernels.
703 # Observed in 4.11-rt, 4.15-4.17, 5.0-rt - 5.16-rt
704 # It seems easier to disable the driver than to attempt patching.
706 # In function ‘ur_load_imm_any’,
707 # inlined from ‘jeq_imm’ at drivers/net/ethernet/netronome/nfp/bpf/jit.c:3146:13:
708 # ./include/linux/compiler.h:350:45: error: call to ‘__compiletime_assert_1062’ declared with attribute error: FIELD_FIT: value too large for the field
709 # 350 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
711 scripts/config --disable CONFIG_NET_VENDOR_NETRONOME
713 # In function ‘memcpy’,
714 # inlined from ‘kszphy_get_strings’ at drivers/net/phy/micrel.c:664:3:
715 # ./include/linux/string.h:305:25: error: call to ‘__read_overflow2’ declared with attribute error: detected read beyond size of object passed as 2nd parameter
716 # 305 | __read_overflow2();
717 # | ^~~~~~~~~~~~~~~~~~
718 # make[3]: *** [scripts/Makefile.build:308: drivers/net/phy/micrel.o] Error 1
720 scripts/config --disable CONFIG_MICREL_PHY
723 # IGBVF won't build with recent gcc on 2.6.38.x
724 if { vergte "$kversion" "2.6.37" && verlt "$kversion" "2.6.38"; }; then
725 scripts/config --disable CONFIG_IGBVF
728 # Don't fail the build on warnings
729 scripts/config --disable CONFIG_WERROR
730 scripts/config --enable CONFIG_PPC_DISABLE_WERROR
732 # Set required options
733 scripts/config --enable CONFIG_TRACEPOINTS
734 scripts/config --enable CONFIG_KALLSYMS
735 scripts/config --enable CONFIG_HIGH_RES_TIMERS
736 scripts/config --enable CONFIG_KPROBES
737 scripts/config --enable CONFIG_FTRACE
738 scripts/config --enable CONFIG_BLK_DEV_IO_TRACE
739 scripts/config --enable CONFIG_KALLSYMS_ALL
740 scripts/config --enable CONFIG_HAVE_SYSCALL_TRACEPOINTS
741 scripts/config --enable CONFIG_PERF_EVENTS
742 scripts/config --enable CONFIG_EVENT_TRACING
743 scripts/config --enable CONFIG_KRETPROBES
745 if [ -n "${DEBUG}" ] ; then
749 make "$update_conf_target" "${make_args[@]}"
750 make -j"$NPROC" "${make_args[@]}"
752 krelease=$(make -s kernelrelease "${make_args[@]}")
754 # Save the kernel and modules
755 mkdir -p "$LINUX_INSTOBJ_DIR/boot
"
756 make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP=1 modules_install "${make_args[@]}"
757 make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_PATH="$LINUX_INSTOBJ_DIR/boot
" install "${make_args[@]}"
758 rm -f "$LINUX_INSTOBJ_DIR/lib
/modules
/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib
/modules
/${krelease}/build
"
759 ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib
/modules
/${krelease}/source"
760 ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib
/modules
/${krelease}/source"
764 extract_distro_headers() {
766 # Enter linux source dir
767 cd "${LINUX_SRCOBJ_DIR}"
770 # For RT kernels, copy version file
771 if [ -s localversion-rt ]; then
772 cp -a localversion-rt "${LINUX_HDROBJ_DIR}"
775 # Copy all Makefile related stuff
776 find . -path './include/*' -prune \
777 -o -path './scripts/*' -prune -o -type f \
778 \( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
779 -name '*.sh' -o -name '*.pl' -o -name '*.lds' \) \
780 -print | cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
782 # Copy base scripts and include dirs
783 cp -a scripts include "${LINUX_HDROBJ_DIR}"
786 (find arch -name include -type d -print0 | \
787 xargs -0 -n1 -I '{}' find '{}' -type f) | \
788 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
791 (find arch -name scripts -type d -print0 | \
792 xargs -0 -n1 -I '{}' find '{}' -type f) | \
793 cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
796 rm -f "${LINUX_HDROBJ_DIR}/scripts
/*.o
"
797 rm -f "${LINUX_HDROBJ_DIR}/scripts
/*/*.o
"
799 # On powerpc 32bits this object is required to link modules
800 if [ "${karch}" = "powerpc
" ]; then
801 if [ "$
(scripts
/config
-s CONFIG_PPC64
)" = "y
" ] && vergte "${kversion}" "5.4"; then
804 cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LINUX_HDROBJ_DIR}/"
808 # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
809 if [ "${karch}" = "arm64
" ]; then
810 if [ -f "arch
/arm64
/kernel
/ftrace-mod.S
" ]; then
811 cp -a --parents arch/arm64/kernel/ftrace-mod.[So] "${LINUX_HDROBJ_DIR}/"
815 # On riscv with 5.14 the vsdo objects are required
816 if [ "${karch}" = "riscv
" ] && \
817 ( { vergte "${kversion}" "5.14"; } && { verlt "${kversion}" "5.15"; } ); then
818 cp -a --parents arch
/riscv
/kernel
/vdso
/*.o
"${LINUX_HDROBJ_DIR}/"
821 # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y
822 if [ -f tools
/objtool
/objtool
]; then
823 cp -a --parents tools
/objtool
/objtool
"${LINUX_HDROBJ_DIR}/"
826 if [ -f "arch/x86/kernel/macros.s" ]; then
827 cp -a --parents arch
/x86
/kernel
/macros.s
"${LINUX_HDROBJ_DIR}/"
830 # Copy modules related stuff, if available
831 if [ -s Module.symvers
]; then
832 cp Module.symvers
"${LINUX_HDROBJ_DIR}"
835 if [ -s System.map
]; then
836 cp System.map
"${LINUX_HDROBJ_DIR}"
839 if [ -s Module.markers
]; then
840 cp Module.markers
"${LINUX_HDROBJ_DIR}"
844 cp .config
"${LINUX_HDROBJ_DIR}"
846 # Make sure the Makefile and version.h have a matching timestamp so that
847 # external modules can be built
848 if [ -s "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" ]; then
849 touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h"
850 elif [ -s "${LINUX_HDROBJ_DIR}/include/linux/version.h" ]; then
851 touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/linux/version.h"
853 echo "Missing version.h"
856 touch -r "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/generated/autoconf.h"
858 # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
859 if [ ! -f "${LINUX_HDROBJ_DIR}/include/config/auto.conf" ]; then
860 cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf"
863 # Finally clean the object files from the full source tree
866 # And regen the modules support files
867 make modules_prepare
"${make_args[@]}"
869 # On powerpc 32bits this object is required to link modules
870 if [ "${karch}" = "powerpc" ]; then
871 if [ "$(scripts/config -s CONFIG_PPC64)" = "y" ] && vergte
"${kversion}" "5.4"; then
874 make arch
/powerpc
/lib
/crtsavres.o
"${make_args[@]}"
878 # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
879 if [ "${karch}" = "arm64" ]; then
880 if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
881 make arch
/arm64
/kernel
/ftrace-mod.o
"${make_args[@]}"
885 # Version specific tasks
888 # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
889 ABINUM
="$(echo "$ktag" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
890 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include
/generated
/utsrelease.h
891 echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
903 kversion
=$
(make -C "$LINUX_HDROBJ_DIR" -s kernelversion
)
905 # Try to catch some compatibility problems by turning some
906 # warnings into errors.
907 #export KCFLAGS="$KCFLAGS -Wall -Werror"
909 # Enter lttng-modules source dir
910 cd "${MODULES_GIT_DIR}"
912 # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
913 # timekeeping subsystem. We want those build to fail.
914 if { vergte
"$kversion" "3.10" && verlte
"$kversion" "3.10.13"; } || \
915 { vergte
"$kversion" "3.11" && verlte
"$kversion" "3.11.2"; }; then
920 KERNELDIR
="${kdir}" make -j"${NPROC}" V=1 "${make_args[@]}"
925 # We expect this build to fail, if it doesn't, fail the job.
926 if [ "$ret" -eq 0 ]; then
927 echo "This build should have failed."
931 # We have to publish at least one file or the build will fail
932 echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
934 KERNELDIR
="${kdir}" make clean
938 # Build modules against full kernel sources
939 KERNELDIR
="${kdir}" make -j"${NPROC}" V=1 "${make_args[@]}"
941 # Install modules to build dir
942 KERNELDIR
="${kdir}" make INSTALL_MOD_PATH
="${outdir}" modules_install
945 KERNELDIR
="${kdir}" make clean
955 MODULES_GIT_DIR
="${WORKSPACE}/src/lttng-modules"
956 LINUX_GIT_DIR
="${WORKSPACE}/src/linux"
958 LINUX_OBJ_DIR
="${WORKSPACE}/linux"
959 LINUX_SRCOBJ_DIR
="${LINUX_OBJ_DIR}/sources"
960 LINUX_HDROBJ_DIR
="${LINUX_OBJ_DIR}/headers"
961 LINUX_INSTOBJ_DIR
="${LINUX_OBJ_DIR}/install"
963 MODULES_OUTPUT_KSRC_DIR
="${WORKSPACE}/build/lttng-modules-ksrc"
964 MODULES_OUTPUT_KHDR_DIR
="${WORKSPACE}/build/lttng-modules-khdr"
966 LINUX_GIT_REF_REPO_DIR
="$HOME/gitcache/linux-stable.git/"
968 OBJ_STORE_URL
="s3://jenkins"
972 # Create build directories
973 mkdir
-p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
975 print_header
"Clone LTTng-modules sources"
976 git_clone_modules_sources
978 # Setup cross compile env if available
979 if [ "x${cross_arch}" != "x" ]; then
981 case "$cross_arch" in
984 cross_compile
="arm-linux-gnueabihf-"
985 vanilla_config
="imx_v6_v7_defconfig"
986 ubuntu_config
="armhf-config.flavour.generic"
991 cross_compile
="aarch64-linux-gnu-"
992 vanilla_config
="defconfig"
993 ubuntu_config
="arm64-config.flavour.generic"
998 cross_compile
="powerpc-linux-gnu-"
999 vanilla_config
="ppc44x_defconfig"
1000 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
1005 cross_compile
="powerpc64le-linux-gnu-"
1006 vanilla_config
="pseries_le_defconfig"
1007 ubuntu_config
="ppc64el-config.flavour.generic"
1012 cross_compile
="riscv64-linux-gnu-"
1013 vanilla_config
="defconfig"
1014 ubuntu_config
="riscv64-config.flavour.generic"
1018 echo "Unsupported cross arch $cross_arch"
1023 # Export variables used by Kbuild for cross compilation
1024 export ARCH
="${karch}"
1025 export CROSS_COMPILE
="${cross_compile}"
1027 # Set arch specific values if we are not cross compiling
1028 elif [ "x${arch}" != "x" ]; then
1033 vanilla_config
="allmodconfig"
1034 ubuntu_config
="i386-config.flavour.generic"
1039 vanilla_config
="allmodconfig"
1040 ubuntu_config
="amd64-config.flavour.generic"
1045 vanilla_config
="allmodconfig"
1046 ubuntu_config
="armhf-config.flavour.generic"
1051 vanilla_config
="allmodconfig"
1052 ubuntu_config
="arm64-config.flavour.generic"
1057 vanilla_config
="allmodconfig"
1058 ubuntu_config
="powerpc-config.flavour.powerpc-smp"
1063 vanilla_config
="allmodconfig"
1064 ubuntu_config
="ppc64el-config.flavour.generic"
1069 vanilla_config
="allmodconfig"
1070 ubuntu_config
="riscv64-config.flavour.generic"
1074 echo "Unsupported arch $arch"
1079 echo "No arch or cross_arch specified"
1085 # First get the kernel build from the object store, or build it, if it's
1089 echo "# Setup endpoint
1090 host_base = obj.internal.efficios.com
1091 host_bucket = obj.internal.efficios.com
1092 bucket_location = us-east-1
1096 access_key = jenkins
1097 secret_key = echo123456
1099 # Enable S3 v4 signature APIs
1100 signature_v2 = False" > "$WORKSPACE/.s3cfg"
1103 url_hash
="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
1104 obj_name
="linux.tar.bz2"
1106 if [ -z "${cross_arch}" ]; then
1107 obj_url_prefix
="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/platform-${platform}/$arch/native"
1109 obj_url_prefix
="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/platform-${platform}/${cross_arch}"
1112 obj_url
="$obj_url_prefix/$obj_name"
1115 # In s3cmd 2.3, the return code of get when an object does not exist (64)
1116 # is different than in 2.2 (12). The return codes of 's3cmd info' are
1117 # consistent between 2.2 and 2.3.
1118 s3cmd
-c "$WORKSPACE/.s3cfg" info
"$obj_url"
1124 print_header
"Get sources and prebuilt kernel"
1125 s3cmd
-c "$WORKSPACE/.s3cfg" get
"$obj_url"
1128 print_header
"Select compiler and set build flags"
1134 print_header
"Clone kernel sources"
1136 # Build all the things and upload
1137 # then finish the module build...
1139 git_clone_linux_sources
1140 git_export_linux_sources
1142 print_header
"Select compiler and set build flags"
1146 ## PREPARE FULL LINUX SOURCE TREE
1147 print_header
"Build kernel from source"
1150 ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
1151 extract_distro_headers
1153 print_header
"Upload kernel to object storage"
1160 echo "Unknown error? Abort"
1167 # Either we downloaded a pre-build kernel or we built it and uploaded
1168 # the archive for future builds.
1172 print_header
"Build modules against full kernel sources"
1173 build_modules
"${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"
1175 print_header
"Build modules against kernel headers"
1176 build_modules
"${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
1179 print_header
"Check for built modules in install directory"
1181 # Make sure some modules were actually built
1182 tree
"${MODULES_OUTPUT_KSRC_DIR}"
1183 if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
1184 echo "No modules built!"
1188 tree
"${MODULES_OUTPUT_KHDR_DIR}"
1189 if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
1190 echo "No modules built!"