X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=scripts%2Flttng-modules%2Fparam-build.sh;h=5ffffd2d79233bba504f090f60521ee61fac241d;hb=593cd35e7499321c2c882cf779c82d698563f8e9;hp=a905a38cb03ded5cd988639f3b8ca6c9343bcf1b;hpb=2c1d386a795ee93d8d8af91559e8b23ea036d82a;p=lttng-ci.git diff --git a/scripts/lttng-modules/param-build.sh b/scripts/lttng-modules/param-build.sh index a905a38..5ffffd2 100644 --- a/scripts/lttng-modules/param-build.sh +++ b/scripts/lttng-modules/param-build.sh @@ -1,6 +1,6 @@ -#!/bin/sh -exu +#!/bin/bash # -# Copyright (C) 2016 - Michael Jeanson +# Copyright (C) 2016-2019 Michael Jeanson # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by @@ -15,92 +15,1084 @@ # You should have received a copy of the GNU General Public License # along with this program. If not, see . +set -exu + +# Parameters +platforms=${platforms:-} +# Derive arch from label if it isn't set +if [ -z "${arch:-}" ] ; then + # Labels may be platform specific, eg. jammy-amd64, deb12-armhf + regex='[[:alnum:]]+-([[:alnum:]]+)' + if [[ "${platforms}" =~ ${regex} ]] ; then + arch="${BASH_REMATCH[1]}" + else + arch="${platforms:-}" + fi +fi + +cross_arch=${cross_arch:-} +ktag=${ktag:-} +kgitrepo=${kgitrepo:-} +mversion=${mversion:-} +mgitrepo=${mgitrepo:-} +make_args=() + +DEBUG=${DEBUG:-} + +## FUNCTIONS ## + # Kernel version compare functions verlte() { - [ "$1" = "`printf '%s\n%s' $1 $2 | sort -V | head -n1`" ] + [ "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | head -n1)" ] } verlt() { - [ "$1" = "$2" ] && return 1 || verlte $1 $2 + # shellcheck disable=SC2015 + [ "$1" = "$2" ] && return 1 || verlte "$1" "$2" } vergte() { - [ "$1" = "`printf '%s\n%s' $1 $2 | sort -V | tail -n1`" ] + [ "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | tail -n1)" ] } vergt() { - [ "$1" = "$2" ] && return 1 || vergte $1 $2 + # shellcheck disable=SC2015 + [ "$1" = "$2" ] && return 1 || vergte "$1" "$2" } -# Use all CPU cores -NPROC=$(nproc) +git_clone_modules_sources() { + mkdir -p "$MODULES_GIT_DIR" -SRCDIR="${WORKSPACE}/lttng-modules" -BUILDDIR="${WORKSPACE}/build" -LNXSRCDIR="${WORKSPACE}/linux" -LNXBUILDDIR="${WORKSPACE}/linux-build" + # If the version starts with "refs/", checkout the specific git ref, otherwise treat it + # as a branch name. + if [ "${mversion:0:5}" = "refs/" ]; then + git clone --no-tags --depth=1 "${mgitrepo}" "$MODULES_GIT_DIR" + (cd "$MODULES_GIT_DIR" && git fetch origin "${mversion}" && git checkout FETCH_HEAD) + else + git clone --no-tags --depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR" + fi +} -# Create build directory -mkdir -p "${BUILDDIR}" "${LNXBUILDDIR}" +# Checkout a shallow kernel tree of the specified tag +git_clone_linux_sources() { + mkdir -p "$LINUX_GIT_DIR" + git clone --depth=1 -b "${ktag}" --reference "$LINUX_GIT_REF_REPO_DIR" "${kgitrepo}" "$LINUX_GIT_DIR" +} -# Enter linux source dir -cd "${LNXSRCDIR}" -# Prepare linux sources for modules OOT build -make O="${LNXBUILDDIR}" defconfig +# Export the kernel sources from the git repo +git_export_linux_sources() { + cd "$LINUX_GIT_DIR" + git archive "${ktag}" | tar -x -C "$LINUX_SRCOBJ_DIR" +} -# Enable CONFIG_KALLSYMS_ALL -sed -i "s/# CONFIG_KALLSYMS_ALL is not set/CONFIG_KALLSYMS_ALL=y/g" "${LNXBUILDDIR}"/.config -# Build to out of tree dir -make O="${LNXBUILDDIR}" modules_prepare +# Upload the tar archive to the object store +upload_archive_obj() { + s3cmd -c "$WORKSPACE/.s3cfg" put "$WORKSPACE/$obj_name" "$obj_url_prefix/" + rm -f "$WORKSPACE/$obj_name" +} -case "$kversion" in - Ubuntu*) - #fakeroot debian/rules clean - #fakeroot debian/rules genconfigs - #cp CONFIGS/amd64-config.flavour.generic .config - # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code - ABINUM=$(echo $kversion | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)') - echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> ${LNXBUILDDIR}/include/generated/utsrelease.h - ;; -esac +extract_archive_obj() { + tar -xf "$WORKSPACE/$obj_name" -C "$LINUX_OBJ_DIR" -I pbzip2 + rm -f "$WORKSPACE/$obj_name" +} -# Get kernel version from source tree -cd "${LNXBUILDDIR}" -KVERSION=$(make kernelversion) -# Enter source dir -cd "${SRCDIR}" +tar_archive_obj() { + cd "$LINUX_OBJ_DIR" + tar -cf "$WORKSPACE/$obj_name" -I pbzip2 . + cd - +} + +list_gccs() { + local gccs + gccs=() + IFS=: read -r -a path_array <<< "$PATH" + while read -r gcc ; do + gccs+=("$gcc") + done < <(find "${path_array[@]}" -maxdepth 1 -regex '.*/gcc-[0-9\.]+$' -printf '%f\n' | sort -t- -k2 -V -r) + echo "${gccs[@]}" +} + +# Find the most recent GCC version supported by the kernel sources +select_compiler() { + local selected_cc -# kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the -# timekeeping subsystem. We want those build to fail. -if { vergte "$KVERSION" "3.10" && verlte "$KVERSION" "3.10.13"; } || \ - { vergte "$KVERSION" "3.11" && verlte "$KVERSION" "3.11.2"; }; then + cd "$LINUX_SRCOBJ_DIR" + + kversion=$(make -s kernelversion) set +e - # Build modules - KERNELDIR="${LNXBUILDDIR}" make -j${NPROC} V=1 + for cc in $(list_gccs) ; do + if "${CROSS_COMPILE:-}${cc}" -I include/ -D__LINUX_COMPILER_H -D__LINUX_COMPILER_TYPES_H -E include/linux/compiler-gcc.h; then + cc_version=$(echo "${cc}" | cut -d'-' -f2) + if { verlt "${kversion}" "5.17"; } && { vergt "${cc_version}" "11"; } ; then + # Using gcc-12+ with '-Wuse-after-free' breaks the build of older + # kernels (in particular, objtool). Some releases on LTS + # branches between 4.x and 5.15 can be built with gcc-12. + # @see https://lore.kernel.org/lkml/20494.1643237814@turing-police/ + # @see https://gitlab.com/linux-kernel/stable/-/commit/52a9dab6d892763b2a8334a568bd4e2c1a6fde66 + continue + fi + selected_cc="$cc" + break + fi + done - # We expect this build to fail, if it doesn't, fail the job. - if [ "$?" -eq 0 ]; then - exit 1 + set -e + + # Force gcc-4.8 for kernels before 4.4 + if { verlt "$kversion" "4.4"; }; then + selected_cc='gcc-4.8' fi - # We have to publish at least one file or the build will fail - echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${BUILDDIR}/BROKEN.txt" + if [ -z "$selected_cc" ]; then + echo "Found no suitable compiler." + exit 1 + fi + + _KAFLAGS=() + _KCFLAGS=() + _KCPPFLAGS=() + _HOSTCFLAGS=() + if [ "$selected_cc" != "gcc-4.8" ]; then + # Older kernel Makefiles do not expect the compiler to default to PIE + _KAFLAGS+=(-fno-pie) + _KCFLAGS+=( + -fno-pie + -no-pie + -fno-stack-protector + ) + _KCPPFLAGS+=(-fno-pie) + fi + + selected_cc_version="$(echo "${selected_cc}" | cut -d'-' -f2)" + if { vergte "${selected_cc_version}" "10"; } && { verlt "${kversion}" "5.10"; } ; then + # gcc-10 changed the default from '-fcommon' to '-fno-common', which + # causes a linker failure. '-fcommon' can be set on the HOSTCFLAGS + # to avoid the issue. + # @see https://gitlab.com/linux-kernel/stable/-/commit/e33a814e772cdc36436c8c188d8c42d019fda639 + _HOSTCFLAGS+=(-fcommon) + fi + + if [ "${cross_arch:-}" == "armhf" ] ; then + if { verlt "${kversion}" "5.14"; } ; then + # Work-around for producing instructions that aren't valid for the + # default architectures. + # Eg. Error: selected processor does not support `cpsid i' in ARM mode + _KCFLAGS+=(-march=armv7-a -mfpu=vfpv3-d16) + _KCPPFLAGS+=(-march=armv7-a -mfpu=vfpv3-d16) + fi + fi + if { vergt "${selected_cc_version}" "8"; } && { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.17"; } ; then + # This was added to -Wall in gcc 9 but some kernels do not include the fixes + # @see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88583 + _KCFLAGS+=(-Wno-error=packed-not-aligned) + fi + + export KAFLAGS="${_KAFLAGS[*]}" + export KCFLAGS="${_KCFLAGS[*]}" + export KCPPFLAGS="${_KCPPFLAGS[*]}" + export HOSTCFLAGS="${_HOSTCFLAGS[*]}" + export CC="${CROSS_COMPILE:-}${selected_cc}" + export HOSTCC="${selected_cc}" + + make_args=( + CC="${CC}" + HOSTCC="${HOSTCC}" + HOSTCFLAGS="${HOSTCFLAGS:-}" + ) + if [ -n "${DEBUG}" ] ; then + make_args+=( + V=1 + ) + fi + cd - +} + +patch_linux_kernel() { + local commit_hash + commit_hash="$1" + set +e + git -C "${LINUX_GIT_REF_REPO_DIR}" format-patch -n1 --stdout "${commit_hash}" | patch -p1 set -e + if [ "$?" -gt 1 ] ; then + echo "Serious issue patching" + exit 1 + fi +} + +build_linux_kernel() { + cd "$LINUX_SRCOBJ_DIR" + + kversion=$(make -s kernelversion "${make_args[@]}") + pahole_version="$(pahole --version | tr -d 'v')" + + if { verlt "${kversion}" "3.3"; } && [ "${vanilla_config}" = "imx_v6_v7_defconfig" ] ; then + # imx_v6_v7 didn't exist before 06965c39b4c63933fa0a1cde2237ef85477c5655 + if { verlt "${kversion}" "3.2"; } ; then + vanilla_config='mx5_defconfig' + else + vanilla_config='mx51_defconfig' + fi + fi + + if { verlt "${kversion}" "3.13"; } && [ "${vanilla_config}" = "pseries_le_defconfig" ] ; then + # pseries_le_deconfig was introduced in f53e462e907cbaed29c49c0f10f5b8f614e1bf1d + vanilla_config='pseries_defconfig' + fi + + # Generate kernel configuration + case "$ktag" in + Ubuntu*) + if [ "${cross_arch}" = "powerpc" ]; then + if vergte "${kversion}" "4.10"; then + echo "Ubuntu removed big endian powerpc configuration from kernel >= 4.10. Don't try to build it." + exit 0 + fi + fi + + fakeroot debian/rules clean KW_DEFCONFIG_DIR=. + + # Hack for kernel Ubuntu-hwe-5.8 + # The debian/control file is produced by the clean target above, so this + # check needs to happen afterwards. + if [ ! -f "debian/compat" ] && ! grep -q debhelper-compat debian/control; then + echo "10" > "debian/compat" + fi + + # genconfigs check can fail in certain cases, eg. when a more recent + # compiler exposes kernel configuration flags which aren't set in the + # Ubuntu annotations. + # In any case, the configuration will be updated with any missing values + # later in our build script. + fakeroot debian/rules genconfigs KW_DEFCONFIG_DIR=. do_skip_checks=true + cp CONFIGS/"${ubuntu_config}" .config + ;; + + *) + # Force 32bit build on i386, default is 64bit + if [ "$arch" = "i386" ]; then + export ARCH="i386" + fi + + make "${vanilla_config}" "${make_args[@]}" + ;; + esac + + if [ "${vanilla_config}" = "pseries_defconfig" ] && [ "${cross_arch}" = "ppc64el" ] ; then + # @see diff <(git show v3.13:arch/powerpc/configs/pseries_defconfig) <(git show v3.13:arch/powerpc/configs/pseries_le_defconfig) + scripts/config --enable CONFIG_CPU_LITTLE_ENDIAN + scripts/config --enable CONFIG_CMA + scripts/config --disable CONFIG_XMON_DEFAULT + # scripts/config --disable CONFIG_VIRTUALIZATION + # scripts/config --disable CONFIG_KVM_BOOK3S_64 + scripts/config --disable CONFIG_KVM_BOOK3S_64_HV + fi + + # oldnoconfig was renamed in 4.19 + if vergte "$kversion" "4.19"; then + update_conf_target="olddefconfig" + else + update_conf_target="oldnoconfig" + fi + + # Fix 'defined(@array)' was removed from recent perl + if [ -f "kernel/timeconst.pl" ]; then + sed -i 's/defined(\@\(.*\))/@\1/' kernel/timeconst.pl + fi + + # Fix syntax of inline assembly which is confused with C++11 raw strings on gcc >= 5 + if [ "$HOSTCC" != "gcc-4.8" ]; then + if [ -f "arch/x86/kvm/svm.c" ]; then + sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/svm.c + fi + + if [ -f "arch/x86/kvm/vmx.c" ]; then + sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/vmx.c + fi + fi + + if { verlt "${kversion}" "5.11"; } && { vergte "${kversion}" "4.10"; } ; then + # Binutils > 2.35 strips empty symbol tables, causing obltool to fail + # in certain cases when files are empty. + # @see https://gitlab.com/linux-kernel/stable/-/commit/1d489151e9f9d1647110277ff77282fe4d96d09b + # + # There doesn't seem to be any LD/AS/AR flags to control this behaviour, + # therefore patching tools/objtool/elf.c is attempted. + patch_linux_kernel 1d489151e9f9d1647110277ff77282fe4d96d09b + if { verlt "${kversion}" "4.18"; } ; then + patch_linux_kernel e81e0724432542af8d8c702c31e9d82f57b1ff31 + fi + fi + + if { vergt "${selected_cc_version}" "7"; } && { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.17"; } ; then + # Builds fail due to -Werror=restrict in pager.o and str_error_r.o + if { verlt "${kversion}" "4.16"; } ; then + # This is patched since objtool's Makefile doesn't respect HOSTCFLAGS + # @see https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad343a98e74e85aa91d844310e797f96fee6983b + patch_linux_kernel ad343a98e74e85aa91d844310e797f96fee6983b + fi + if { verlt "${kversion}" "4.17"; } ; then + # This is patched since objtool's Makefile doesn't respect HOSTCFLAGS + # @see https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=854e55ad289ef8888e7991f0ada85d5846f5afb9 + patch_linux_kernel 854e55ad289ef8888e7991f0ada85d5846f5afb9 + fi + + fi + + if { vergt "${selected_cc_version}" "9"; } && { verlt "${kversion}" "5.6"; } ; then + # Duplicate decalarations of __force_order + # @see https://gitlab.com/linux-kernel/stable/-/commit/df6d4f9db79c1a5d6f48b59db35ccd1e9ff9adfc + # However, kaslr_64.c doesn't exit in 4.15, 4.16, it's named pagetable.c + if [ -f arch/x86/boot/compressed/pagetable.c ] ; then + sed -i '/^unsigned long __force_order;$/d' arch/x86/boot/compressed/pagetable.c + fi + if [ -f arch/x86/boot/compressed/kaslr_64.c ] ; then + patch_linux_kernel df6d4f9db79c1a5d6f48b59db35ccd1e9ff9adfc + fi + fi + + if { vergte "${kversion}" "4.18"; } && { verlt "${kversion}" "4.19"; } ; then + # In some cases, compiling net/bpfilter can fail with the following error: + # net/bpfilter/main.c:9:10: fatal error: include/uapi/linux/bpf.h: No such file or directory + # make[2]: *** [scripts/Makefile.host:107: net/bpfilter/main.o] Error 1 + # + # While the issue is potentially in a number of old versions, it has only + # been observed in v4.18-rt + # + patch_linux_kernel 303a339f30a9441c4695d3d2cc78f1b33cd959ff + fi + + if { vergte "${kversion}" "4.18"; } && { verlt "${kversion}" "4.19"; } ; then + # In some cases, compiling net/bpfilter can fail with the following error: + # net/bpfilter/main.c:9:10: fatal error: include/uapi/linux/bpf.h: No such file or directory + # make[2]: *** [scripts/Makefile.host:107: net/bpfilter/main.o] Error 1 + # + # While the issue is potentially in a number of old versions, it has only + # been observed in v4.18-rt + # + patch_linux_kernel 303a339f30a9441c4695d3d2cc78f1b33cd959ff + fi + + if { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.18"; } ; then + # Some old kernels fail to build when make is too new + # @see https://gitlab.com/linux-kernel/stable/-/commit/9feeb638cde083c737e295c0547f1b4f28e99583 + patch_linux_kernel 9564a8cf422d7b58f6e857e3546d346fa970191e + # @see https://gitlab.com/linux-kernel/stable/-/commit/9feeb638cde083c737e295c0547f1b4f28e99583 + patch_linux_kernel 9feeb638cde083c737e295c0547f1b4f28e99583 + fi + + if ( { vergte "${kversion}" "4.12"; } && { verlt "${kversion}" "4.20.17"; } ) || \ + ( { vergte "${kversion}" "5.0"; } && { verlt "${kversion}" "5.0.12"; } ) ; then + # Old kernels can fail to build while on newer host kernels with errors + # such as: + # In file included from scripts/selinux/genheaders/genheaders.c:19: + # ./security/selinux/include/classmap.h:249:2: error: #error New address family defined, please update secclass_map. + # @see https://gitlab.com/linux-kernel/stable/-/commit/dfbd199a7cfe3e3cd8531e1353cdbd7175bfbc5e + # + patch_linux_kernel dfbd199a7cfe3e3cd8531e1353cdbd7175bfbc5e + fi + + if { vergte "${kversion}" "3.18"; } && { verlt "${kversion}" "4.16"; } ; then + # Compatibility with binutils >= ~ 2.31 + patch_linux_kernel b21ebf2fb4cde1618915a97cc773e287ff49173e + fi + + # The above patch only partially applies linux 3.17, and has been, so a + # rebased version is used instead. + if { vergte "${kversion}" "3.17"; } && { verlt "${kversion}" "3.18"; } ; then + cat <<'EOF' | patch -p1 +diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c +index 48598105..0652c5b6 100644 +--- a/arch/x86/kernel/machine_kexec_64.c ++++ b/arch/x86/kernel/machine_kexec_64.c +@@ -516,6 +516,7 @@ int arch_kexec_apply_relocations_add(const Elf64_Ehdr *ehdr, + goto overflow; + break; + case R_X86_64_PC32: ++ case R_X86_64_PLT32: + value -= (u64)address; + *(u32 *)location = value; + break; +diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c +index e69f9882..7c6bc9fe 100644 +--- a/arch/x86/kernel/module.c ++++ b/arch/x86/kernel/module.c +@@ -180,6 +180,7 @@ int apply_relocate_add(Elf64_Shdr *sechdrs, + goto overflow; + break; + case R_X86_64_PC32: ++ case R_X86_64_PLT32: + val -= (u64)loc; + *(u32 *)loc = val; + #if 0 +diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c +index bbb1d225..8deeacbc 100644 +--- a/arch/x86/tools/relocs.c ++++ b/arch/x86/tools/relocs.c +@@ -763,6 +763,7 @@ static int do_reloc64(struct section *sec, Elf_Rel *rel, ElfW(Sym) *sym, + switch (r_type) { + case R_X86_64_NONE: + case R_X86_64_PC32: ++ case R_X86_64_PLT32: + /* + * NONE can be ignored and PC relative relocations don't + * need to be adjusted. +EOF + fi + + if ( { vergte "${kversion}" "3.14"; } && { verlt "${kversion}" "4.4"; } ) || + ( { vergte "${kversion}" "4.8"; } && { verlt "${kversion}" "4.18"; } ); then + # While the original motivation of this patch is for fixing builds using + # clang, the same error occurs between linux >= 3.14 and < 4.4, and in + # 4.15, 4.16. + # For rt-linux, the error has been observed in 4.8, 4.11, and 4.13. + # + # This patch only partially applies due to changes in kernel/Makefile, + # so a supplementary patch is needed + # + # Without this patch, builds fail with + # Cannot find symbol for section 2: .text. + # kernel/elfcore.o: failed + # + # @see https://github.com/linuxppc/issues/issues/388 + # @see https://lore.kernel.org/lkml/20201204165742.3815221-2-arnd@kernel.org/ + # + patch_linux_kernel 6e7b64b9dd6d96537d816ea07ec26b7dedd397b9 + if grep -q elfcore.o kernel/Makefile ; then + sed -i '/^.* += elfcore.o$/d' kernel/Makefile + fi + fi + # Same as above for the v4.4 branch + if ( { vergte "${kversion}" "4.4"; } && { verlt "${kversion}" "4.4.257"; } ); then + patch_linux_kernel 3140b0740b31cc63cf2ee08bc3f746b423eb068d + if grep -q elfcore.o kernel/Makefile ; then + sed -i '/^.* += elfcore.o$/d' kernel/Makefile + fi + fi + + if { vergte "${kversion}" "4.5"; } && { verlt "${kversion}" "4.8"; } ; then + # Kernels between v4.5 and v4.8 built with gcc >= 8 on arm will hit an + # assembler error : + # + # kernel/.tmp_fork.s: Assembler messages: + # kernel/.tmp_fork.s:1790: Error: .err encountered + # + # @see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85745 + # + patch_linux_kernel 9f73bd8bb445e0cbe4bcef6d4cfc788f1e184007 + fi + + if ( { vergte "${kversion}" "4.4"; } && { verlt "${kversion}" "4.4.136"; } ) || + ( { vergte "${kversion}" "4.5"; } && { verlt "${kversion}" "4.8"; } ); then + # Hacky patch to deal with the following build error: + # Cannot find symbol for section 7: .text.unlikely. + # kernel/kexec_file.o: failed + # make[1]: *** [scripts/Makefile.build:291: kernel/kexec_file.o] Error 1 + # + # This error happens with binutils 2.36 and 2.37, but should probably not + # be an issue with binutils 2.38. + # @see https://github.com/linuxppc/issues/issues/388 + # @see https://github.com/bminor/binutils-gdb/commit/c09c8b42021180eee9495bd50d8b35e683d3901b + # + # There is some sort of config (unspecified in past discussions) which + # provokes the error, and there was never a potential fix merged in + # this discussion, in part because the build systems of the kernel + # switched to objtool instead. + # + # @see https://lore.kernel.org/all/20210215162209.5e2a475b@gandalf.local.home/ + # + sed -i 's/return txtname;/return shdr0->sh_size ? txtname : NULL;/' scripts/recordmcount.h + + # After applying the above patch, the build continues but fails with + # head64.c:(.text.exit+0x5): undefined reference to `__gcov_exit' + # + scripts/config --disable CONFIG_GCOV_KERNEL + fi + + if { vergte "${kversion}" "4.5"; } && { verlt "${kversion}" "4.5.5"; } ; then + # drivers/staging/wilc1000/wilc_spi.c:123:34: error: storage size of ‘wilc1000_spi_ops’ isn’t known + patch_linux_kernel ce7b516f3f9e11fe4ee06fad0d7e853bb6e8f160 + fi + + # Newer binutils don't accept 3 operand 'cmp' instructions on ppc64 + # Convert them to 'cmpw' which was previously done silently + if verlt "$kversion" "4.9"; then + 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/" + 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/" + sed -i "s/\$pie \-o \"\$ofile\"/\$pie --no-dynamic-linker -o \"\$ofile\"/" arch/powerpc/boot/wrapper + fi + + if [ "$(scripts/config --state CONFIG_EXTCON_ADC_JACK)" != "n" ] && + ( { vergte "${kversion}" "4.2"; } && { verlt "${kversion}" "4.12"; } ); then + # 73b6ecdb93e8e77752cae9077c424fcdc6f23c39 introduced a change where + # extcon-adc-jack.h has an incompatible pointer type. + # In GCC >= 5 this will provoke a warning and build failure. + # Eg. + # drivers/extcon/extcon-adc-jack.c: In function ‘adc_jack_probe’: + # drivers/extcon/extcon-adc-jack.c:111:64: error: passing argument 2 of ‘devm_extcon_dev_allocate’ from incompatible pointer type [-Werror=incompatible-pointer-types] + # make[2]: *** [scripts/Makefile.build:295: drivers/extcon/extcon-adc-jack.o] Error 1 + # + # 8a522bf2d4f788306443d36b26b54f0aedcdfdbe (in 4.11) has a fix for this warning + # + patch_linux_kernel 8a522bf2d4f788306443d36b26b54f0aedcdfdbe + fi + + # Fix a typo in v2.6.36.x + if [ -f "arch/x86/kernel/entry_64.S" ]; then + sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch/x86/kernel/entry_64.S + fi + + # Fix compiler switch in vdso Makefile for 2.6.36 to 2.6.36.2 + if { vergte "$kversion" "2.6.36" && verlte "$kversion" "2.6.36.3"; }; then + sed -i 's/-m elf_x86_64/-m64/' arch/x86/vdso/Makefile + sed -i 's/-m elf_i386/-m32/' arch/x86/vdso/Makefile + fi + + # Fix kernel < 3.0 with gcc >= 4.7 + if verlt "$kversion" "3.0"; then + sed -i '/linux\/compiler.h/a #include \/* For asmregparm *\/' arch/x86/include/asm/ptrace.h + sed -i 's/extern long syscall_trace_enter/extern asmregparm long syscall_trace_enter/' arch/x86/include/asm/ptrace.h + sed -i 's/extern void syscall_trace_leave/extern asmregparm void syscall_trace_leave/' arch/x86/include/asm/ptrace.h + echo "header-y += linkage.h" >> include/linux/Kbuild + fi + + if [ "${cross_arch}" = "powerpc" ] ; then + if { vergte "${kversion}" "4.15"; } && { verlt "${kversion}" "4.16"; } ; then + # Avoid register errors such as + # aes_generic.c:(.text+0x4e0): undefined reference to `_restgpr_31_x' + # @see https://gitlab.com/linux-kernel/stable/-/commit/148b974deea927f5dbb6c468af2707b488bfa2de + make_args+=( + CFLAGS_aes_generic.o='' + ) + fi + fi + + if [ "$(scripts/config --state CONFIG_DEBUG_INFO_BTF)" == "y" ] && + { vergte "${pahole_version}" "1.24"; } && + { vergte "${kversion}" "5.10"; } && { verlt "${kversion}" "6.0"; } ;then + # Some kernels Eg. Ubuntu-hwe-5.13-5.13.0-52.59_20.04.1 + # fail with the following error: + # BTFIDS vmlinux + # FAILED: load BTF from vmlinux: Invalid argument + # + # When CONFIG_DEBUG_INFO_BTF is set, certain versions of pahole require + # `--skip_encoding_btf_enum64` to be passed as the kernel doesn't define + # BTF_KIND_ENUM64. + # + # Introduced in 341dfcf8d78eaa3a2dc96dea06f0392eb2978364 (~v5.10) + # @see https://lore.kernel.org/bpf/20220825171620.cioobudss6ovyrkc@altlinux.org/t/ + # + if [ -f "scripts/pahole-flags.sh" ] ; then + sed -i 's/ -J ${PAHOLE_FLAGS} / -J ${PAHOLE_FLAGS} --skip_encoding_btf_enum64 /' scripts/link-vmlinux.sh + else + sed -i 's/ -J ${extra_paholeopt} / -J ${extra_paholeopt} --skip_encoding_btf_enum64 /' scripts/link-vmlinux.sh + fi + fi + + # GCC 4.8 + if [ "$HOSTCC" == "gcc-4.8" ]; then + scripts/config --disable CONFIG_CC_STACKPROTECTOR_STRONG + scripts/config --disable CONFIG_PPC_OF_BOOT_TRAMPOLINE + fi + + # Don't try to sign modules + scripts/config --disable CONFIG_MODULE_SIG + + # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails + scripts/config --disable CONFIG_STACK_VALIDATION + + # Cause problems with inline assembly on i386 + scripts/config --disable CONFIG_DEBUG_SECTION_MISMATCH + + # Don't build samples, they are broken on some kernel releases + scripts/config --disable CONFIG_SAMPLES + scripts/config --disable CONFIG_BUILD_DOCSRC + + # Disable kcov + scripts/config --disable CONFIG_KCOV + + # Broken on some RT kernels + scripts/config --disable CONFIG_HYPERV + + # Broken drivers + scripts/config --disable CONFIG_RAPIDIO_TSI721 + scripts/config --disable CONFIG_SGI_XP + scripts/config --disable CONFIG_MFD_WM8994 + scripts/config --disable CONFIG_DRM_RADEON + scripts/config --disable CONFIG_SND_SOC_WM5100 + # More recent compiler optimizations (from gcc 8 onwards )expose build errors + # with netronome on older kernels. + # Observed in 4.11-rt, 4.15-4.17, 5.0-rt - 5.16-rt + # It seems easier to disable the driver than to attempt patching. + # Eg. + # In function ‘ur_load_imm_any’, + # inlined from ‘jeq_imm’ at drivers/net/ethernet/netronome/nfp/bpf/jit.c:3146:13: + # ./include/linux/compiler.h:350:45: error: call to ‘__compiletime_assert_1062’ declared with attribute error: FIELD_FIT: value too large for the field + # 350 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) + # + scripts/config --disable CONFIG_NET_VENDOR_NETRONOME + # Eg. + # In function ‘memcpy’, + # inlined from ‘kszphy_get_strings’ at drivers/net/phy/micrel.c:664:3: + # ./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 + # 305 | __read_overflow2(); + # | ^~~~~~~~~~~~~~~~~~ + # make[3]: *** [scripts/Makefile.build:308: drivers/net/phy/micrel.o] Error 1 + # + scripts/config --disable CONFIG_MICREL_PHY + + + # IGBVF won't build with recent gcc on 2.6.38.x + if { vergte "$kversion" "2.6.37" && verlt "$kversion" "2.6.38"; }; then + scripts/config --disable CONFIG_IGBVF + fi + + # Don't fail the build on warnings + scripts/config --disable CONFIG_WERROR + scripts/config --enable CONFIG_PPC_DISABLE_WERROR + + # Set required options + scripts/config --enable CONFIG_TRACEPOINTS + scripts/config --enable CONFIG_KALLSYMS + scripts/config --enable CONFIG_HIGH_RES_TIMERS + scripts/config --enable CONFIG_KPROBES + scripts/config --enable CONFIG_FTRACE + scripts/config --enable CONFIG_BLK_DEV_IO_TRACE + scripts/config --enable CONFIG_KALLSYMS_ALL + scripts/config --enable CONFIG_HAVE_SYSCALL_TRACEPOINTS + scripts/config --enable CONFIG_PERF_EVENTS + scripts/config --enable CONFIG_EVENT_TRACING + scripts/config --enable CONFIG_KRETPROBES + + if [ -n "${DEBUG}" ] ; then + cat .config + fi -else # Regular build + make "$update_conf_target" "${make_args[@]}" + make -j"$NPROC" "${make_args[@]}" - # Build modules - KERNELDIR="${LNXBUILDDIR}" make -j${NPROC} V=1 + krelease=$(make -s kernelrelease "${make_args[@]}") + + # Save the kernel and modules + mkdir -p "$LINUX_INSTOBJ_DIR/boot" + make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP=1 modules_install "${make_args[@]}" + make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_PATH="$LINUX_INSTOBJ_DIR/boot" install "${make_args[@]}" + rm -f "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/build" + ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" + ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" +} + + +extract_distro_headers() { + + # Enter linux source dir + cd "${LINUX_SRCOBJ_DIR}" + + + # For RT kernels, copy version file + if [ -s localversion-rt ]; then + cp -a localversion-rt "${LINUX_HDROBJ_DIR}" + fi + + # Copy all Makefile related stuff + find . -path './include/*' -prune \ + -o -path './scripts/*' -prune -o -type f \ + \( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \ + -name '*.sh' -o -name '*.pl' -o -name '*.lds' \) \ + -print | cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}" + + # Copy base scripts and include dirs + cp -a scripts include "${LINUX_HDROBJ_DIR}" + + # Copy arch includes + (find arch -name include -type d -print0 | \ + xargs -0 -n1 -I '{}' find '{}' -type f) | \ + cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}" + + # Copy arch scripts + (find arch -name scripts -type d -print0 | \ + xargs -0 -n1 -I '{}' find '{}' -type f) | \ + cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}" + + # Cleanup scripts + rm -f "${LINUX_HDROBJ_DIR}/scripts/*.o" + rm -f "${LINUX_HDROBJ_DIR}/scripts/*/*.o" + + # On powerpc 32bits this object is required to link modules + if [ "${karch}" = "powerpc" ]; then + if [ "$(scripts/config -s CONFIG_PPC64)" = "y" ] && vergte "${kversion}" "5.4"; then + : + else + cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LINUX_HDROBJ_DIR}/" + fi + fi + + # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support + if [ "${karch}" = "arm64" ]; then + if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then + cp -a --parents arch/arm64/kernel/ftrace-mod.[So] "${LINUX_HDROBJ_DIR}/" + fi + fi + + # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y + if [ -f tools/objtool/objtool ]; then + cp -a --parents tools/objtool/objtool "${LINUX_HDROBJ_DIR}/" + fi + + if [ -f "arch/x86/kernel/macros.s" ]; then + cp -a --parents arch/x86/kernel/macros.s "${LINUX_HDROBJ_DIR}/" + fi + + # Copy modules related stuff, if available + if [ -s Module.symvers ]; then + cp Module.symvers "${LINUX_HDROBJ_DIR}" + fi + + if [ -s System.map ]; then + cp System.map "${LINUX_HDROBJ_DIR}" + fi + + if [ -s Module.markers ]; then + cp Module.markers "${LINUX_HDROBJ_DIR}" + fi + + # Copy config file + cp .config "${LINUX_HDROBJ_DIR}" + + # Make sure the Makefile and version.h have a matching timestamp so that + # external modules can be built + if [ -s "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" ]; then + touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" + elif [ -s "${LINUX_HDROBJ_DIR}/include/linux/version.h" ]; then + touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/linux/version.h" + else + echo "Missing version.h" + exit 1 + fi + touch -r "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/generated/autoconf.h" + + # Copy .config to include/config/auto.conf so "make prepare" is unnecessary. + if [ ! -f "${LINUX_HDROBJ_DIR}/include/config/auto.conf" ]; then + cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf" + fi + + # Finally clean the object files from the full source tree + make clean + + # And regen the modules support files + make modules_prepare "${make_args[@]}" + + # On powerpc 32bits this object is required to link modules + if [ "${karch}" = "powerpc" ]; then + if [ "$(scripts/config -s CONFIG_PPC64)" = "y" ] && vergte "${kversion}" "5.4"; then + : + else + make arch/powerpc/lib/crtsavres.o "${make_args[@]}" + fi + fi + + # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support + if [ "${karch}" = "arm64" ]; then + if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then + make arch/arm64/kernel/ftrace-mod.o "${make_args[@]}" + fi + fi + + # Version specific tasks + case "$ktag" in + Ubuntu*) + # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code + ABINUM="$(echo "$ktag" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')" + echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include/generated/utsrelease.h + echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h" + ;; + esac +} + + +build_modules() { + + local kdir="$1" + local outdir="$2" + local kversion + + kversion=$(make -C "$LINUX_HDROBJ_DIR" -s kernelversion) + + # Try to catch some compatibility problems by turning some + # warnings into errors. + #export KCFLAGS="$KCFLAGS -Wall -Werror" + + # Enter lttng-modules source dir + cd "${MODULES_GIT_DIR}" + + # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the + # timekeeping subsystem. We want those build to fail. + if { vergte "$kversion" "3.10" && verlte "$kversion" "3.10.13"; } || \ + { vergte "$kversion" "3.11" && verlte "$kversion" "3.11.2"; }; then + + set +e + + # Build modules + KERNELDIR="${kdir}" make -j"${NPROC}" V=1 "${make_args[@]}" + ret=$? + + set -e + + # We expect this build to fail, if it doesn't, fail the job. + if [ "$ret" -eq 0 ]; then + echo "This build should have failed." + exit 1 + fi + + # We have to publish at least one file or the build will fail + echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko" + + KERNELDIR="${kdir}" make clean + + else # Regular build + + # Build modules against full kernel sources + KERNELDIR="${kdir}" make -j"${NPROC}" V=1 "${make_args[@]}" + + # Install modules to build dir + KERNELDIR="${kdir}" make INSTALL_MOD_PATH="${outdir}" modules_install + + # Clean build dir + KERNELDIR="${kdir}" make clean + fi +} + + +## MAIN ## + +# Use all CPU cores +NPROC=$(nproc) + +MODULES_GIT_DIR="${WORKSPACE}/src/lttng-modules" +LINUX_GIT_DIR="${WORKSPACE}/src/linux" + +LINUX_OBJ_DIR="${WORKSPACE}/linux" +LINUX_SRCOBJ_DIR="${LINUX_OBJ_DIR}/sources" +LINUX_HDROBJ_DIR="${LINUX_OBJ_DIR}/headers" +LINUX_INSTOBJ_DIR="${LINUX_OBJ_DIR}/install" + +MODULES_OUTPUT_KSRC_DIR="${WORKSPACE}/build/lttng-modules-ksrc" +MODULES_OUTPUT_KHDR_DIR="${WORKSPACE}/build/lttng-modules-khdr" + +LINUX_GIT_REF_REPO_DIR="$HOME/gitcache/linux-stable.git/" + +OBJ_STORE_URL="s3://jenkins" + +cd "$WORKSPACE" + +# Create build directories +mkdir -p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}" + +git_clone_modules_sources + +# Setup cross compile env if available +if [ "x${cross_arch}" != "x" ]; then + + case "$cross_arch" in + "armhf") + karch="arm" + cross_compile="arm-linux-gnueabihf-" + vanilla_config="imx_v6_v7_defconfig" + ubuntu_config="armhf-config.flavour.generic" + ;; + + "arm64") + karch="arm64" + cross_compile="aarch64-linux-gnu-" + vanilla_config="defconfig" + ubuntu_config="arm64-config.flavour.generic" + ;; + + "powerpc") + karch="powerpc" + cross_compile="powerpc-linux-gnu-" + vanilla_config="ppc44x_defconfig" + ubuntu_config="powerpc-config.flavour.powerpc-smp" + ;; + + "ppc64el") + karch="powerpc" + cross_compile="powerpc64le-linux-gnu-" + vanilla_config="pseries_le_defconfig" + ubuntu_config="ppc64el-config.flavour.generic" + ;; + + *) + echo "Unsupported cross arch $cross_arch" + exit 1 + ;; + esac + + # Export variables used by Kbuild for cross compilation + export ARCH="${karch}" + export CROSS_COMPILE="${cross_compile}" + +# Set arch specific values if we are not cross compiling +elif [ "x${arch}" != "x" ]; then + + case "$arch" in + "i386") + karch="x86" + vanilla_config="allmodconfig" + ubuntu_config="i386-config.flavour.generic" + ;; + + "amd64") + karch="x86" + vanilla_config="allmodconfig" + ubuntu_config="amd64-config.flavour.generic" + ;; + + "armhf") + karch="arm" + vanilla_config="allmodconfig" + ubuntu_config="armhf-config.flavour.generic" + ;; + + "arm64") + karch="arm64" + vanilla_config="allmodconfig" + ubuntu_config="arm64-config.flavour.generic" + ;; + + "powerpc") + karch="powerpc" + vanilla_config="allmodconfig" + ubuntu_config="powerpc-config.flavour.powerpc-smp" + ;; + + "ppc64el") + karch="powerpc" + vanilla_config="allmodconfig" + ubuntu_config="ppc64el-config.flavour.generic" + ;; + + *) + echo "Unsupported arch $arch" + exit 1 + ;; + esac +else + echo "No arch or cross_arch specified" + exit 1 +fi + + + +# First get the kernel build from the object store, or build it, if it's +# not available. + +echo "# Setup endpoint +host_base = obj.internal.efficios.com +host_bucket = obj.internal.efficios.com +bucket_location = us-east-1 +use_https = True + +# Setup access keys +access_key = jenkins +secret_key = echo123456 + +# Enable S3 v4 signature APIs +signature_v2 = False" > "$WORKSPACE/.s3cfg" + +url_hash="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')" +obj_name="linux.tar.bz2" + +if [ -z "${cross_arch}" ]; then + obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/platform-${platforms}/$arch/native" +else + obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/platform-${platforms}/${cross_arch}" +fi + +obj_url="$obj_url_prefix/$obj_name" + +set +e +# In s3cmd 2.3, the return code of get when an object does not exist (64) +# is different than in 2.2 (12). The return codes of 's3cmd info' are +# consistent between 2.2 and 2.3. +s3cmd -c "$WORKSPACE/.s3cfg" info "$obj_url" +ret=$? +set -e + +case "$ret" in + "0") + s3cmd -c "$WORKSPACE/.s3cfg" get "$obj_url" + extract_archive_obj + ;; + + "12") + echo "File not found" + + # Build all the things and upload + # then finish the module build... + + git_clone_linux_sources + git_export_linux_sources + + select_compiler + + ## PREPARE FULL LINUX SOURCE TREE + build_linux_kernel + + ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL + extract_distro_headers + + tar_archive_obj + + upload_archive_obj + + ;; + + *) + echo "Unknown error? Abort" + exit 1 + ;; +esac + +select_compiler + +selected_cc_version="$(echo "${selected_cc}" | cut -d'-' -f2)" +# lttng-modules requires gcc >= 5.1 for aarch64 +# @see https://github.com/lttng/lttng-modules/commit/be06402dbdbea2f3394e60ec15c5d3356e2be416 +if { verlt "${selected_cc_version}" "5.1"; } && [ "${cross_arch}" = "arm64" ] ; then + echo "Building lltng-modules on aarch64 requires gcc >= 5.1" + exit 0 +fi + +## BUILD modules +# Either we downloaded a pre-build kernel or we built it and uploaded +# the archive for future builds. + +cd "$WORKSPACE" + +# Build modules against full kernel sources +build_modules "${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" + +# Build modules against kernel headers +build_modules "${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}" + +# Make sure some modules were actually built +tree "${MODULES_OUTPUT_KSRC_DIR}" +if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then + echo "No modules built!" + exit 1 +fi - # Install modules to build dir - KERNELDIR="${LNXBUILDDIR}" make INSTALL_MOD_PATH="${BUILDDIR}" modules_install +tree "${MODULES_OUTPUT_KHDR_DIR}" +if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then + echo "No modules built!" + exit 1 fi # EOF