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Kernel Patches Daemon
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adding ci files
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‎.github/actions/vmtest/action.yml‎

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name: 'vmtest'
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description: 'Build + run vmtest'
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inputs:
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arch:
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description: 'what arch to test'
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required: true
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default: 'x86_64'
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runs:
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using: "composite"
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steps:
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# 1. Setup environment
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- name: Setup build environment
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uses: libbpf/ci/setup-build-env@master
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# 2. Build
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- name: Build kernel image
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shell: bash
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run: ${GITHUB_ACTION_PATH}/build.sh ${{ inputs.arch }}
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- name: Build selftests
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shell: bash
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run: ${GITHUB_ACTION_PATH}/build_selftests.sh
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env:
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VMLINUX_BTF: ${{ github.workspace }}/vmlinux
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# 3. Test
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- name: Prepare rootfs
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uses: libbpf/ci/prepare-rootfs@master
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with:
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project-name: 'libbpf'
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arch: ${{ inputs.arch }}
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kernel-root: '.'
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- name: Run selftests
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uses: libbpf/ci/run-qemu@master
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with:
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arch: ${{ inputs.arch}}
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img: '/tmp/root.img'
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vmlinuz: '${{ github.workspace }}/vmlinuz'

‎.github/actions/vmtest/build.sh‎

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#!/bin/bash
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set -euo pipefail
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ARCH="$1"
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THISDIR="$(cd $(dirname $0) && pwd)"
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source "${THISDIR}"/helpers.sh
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travis_fold start build_kernel "Building kernel"
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cp ${GITHUB_WORKSPACE}/travis-ci/vmtest/configs/config-latest.${ARCH} .config
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make -j $((4*$(nproc))) olddefconfig all > /dev/null
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travis_fold end build_kernel

‎.github/actions/vmtest/build_selftests.sh‎

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#!/bin/bash
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set -euo pipefail
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THISDIR="$(cd $(dirname $0) && pwd)"
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source "${THISDIR}"/helpers.sh
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travis_fold start prepare_selftests "Building selftests"
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LLVM_VER=15
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LIBBPF_PATH="${REPO_ROOT}"
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PREPARE_SELFTESTS_SCRIPT=${THISDIR}/prepare_selftests-${KERNEL}.sh
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if [ -f "${PREPARE_SELFTESTS_SCRIPT}" ]; then
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(cd "${REPO_ROOT}/${REPO_PATH}/tools/testing/selftests/bpf" && ${PREPARE_SELFTESTS_SCRIPT})
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fi
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if [[ "${KERNEL}" = 'LATEST' ]]; then
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VMLINUX_H=
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else
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VMLINUX_H=${THISDIR}/vmlinux.h
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fi
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cd ${REPO_ROOT}/${REPO_PATH}
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make \
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CLANG=clang-${LLVM_VER} \
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LLC=llc-${LLVM_VER} \
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LLVM_STRIP=llvm-strip-${LLVM_VER} \
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VMLINUX_BTF="${VMLINUX_BTF}" \
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VMLINUX_H="${VMLINUX_H}" \
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-C "${REPO_ROOT}/${REPO_PATH}/tools/testing/selftests/bpf" \
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-j $((4*$(nproc))) > /dev/null
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cd -
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mkdir "${LIBBPF_PATH}"/selftests
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cp -R "${REPO_ROOT}/${REPO_PATH}/tools/testing/selftests/bpf" \
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"${LIBBPF_PATH}"/selftests
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cd "${LIBBPF_PATH}"
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rm selftests/bpf/.gitignore
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git add selftests
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travis_fold end prepare_selftests

‎.github/actions/vmtest/helpers.sh‎

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# $1 - start or end
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# $2 - fold identifier, no spaces
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# $3 - fold section description
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travis_fold() {
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local YELLOW='\033[1;33m'
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local NOCOLOR='\033[0m'
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if [ -z ${GITHUB_WORKFLOW+x} ]; then
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echo travis_fold:$1:$2
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if [ ! -z "${3:-}" ]; then
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echo -e "${YELLOW}$3${NOCOLOR}"
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fi
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echo
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else
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if [ $1 = "start" ]; then
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line="::group::$2"
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if [ ! -z "${3:-}" ]; then
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line="$line - ${YELLOW}$3${NOCOLOR}"
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fi
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else
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line="::endgroup::"
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fi
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echo -e "$line"
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fi
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}
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__print() {
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local TITLE=""
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if [[ -n $2 ]]; then
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TITLE=" title=$2"
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fi
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echo "::$1${TITLE}::$3"
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}
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# $1 - title
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# $2 - message
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print_error() {
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__print error $1 $2
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}
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# $1 - title
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# $2 - message
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print_notice() {
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__print notice $1 $2
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}

‎.github/workflows/test.yml‎

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name: bpf-ci
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on:
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pull_request:
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concurrency:
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group: ci-test-${{ github.head_ref }}
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cancel-in-progress: true
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jobs:
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VM_Test:
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runs-on: ${{ matrix.runs_on }}
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name: Kernel ${{ matrix.kernel }} on ${{ matrix.runs_on }} + selftests
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timeout-minutes: 100
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strategy:
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fail-fast: false
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matrix:
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include:
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- kernel: 'LATEST'
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runs_on: ubuntu-latest
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arch: 'x86_64'
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- kernel: 'LATEST'
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runs_on: z15
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arch: 's390x'
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env:
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AUTHOR_EMAIL: "$(git log -1 --pretty=\"%aE\")"
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KERNEL: LATEST
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REPO_ROOT: ${{ github.workspace }}
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REPO_PATH: ""
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steps:
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- uses: actions/checkout@v2
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- if: ${{ github.repository != 'kernel-patches/bpf' && github.repository != 'kernel-patches/bpf-rc' }}
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name: Download bpf-next tree
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uses: libbpf/ci/get-linux-source@master
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with:
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dest: '.kernel'
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- if: ${{ github.repository != 'kernel-patches/bpf' && github.repository != 'kernel-patches/bpf-rc' }}
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name: Move linux source in place
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shell: bash
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run: |
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rm -rf .kernel/.git
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cp -rf .kernel/. .
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rm -rf .kernel
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- uses: libbpf/ci/patch-kernel@master
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with:
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patches-root: '${{ github.workspace }}/travis-ci/diffs'
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repo-root: '${{ github.workspace }}'
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- uses: ./.github/actions/vmtest
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with:
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arch: ${{ matrix.arch }}

‎README‎

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Linux kernel
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============
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There are several guides for kernel developers and users. These guides can
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be rendered in a number of formats, like HTML and PDF. Please read
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Documentation/admin-guide/README.rst first.
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In order to build the documentation, use ``make htmldocs`` or
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``make pdfdocs``. The formatted documentation can also be read online at:
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https://www.kernel.org/doc/html/latest/
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There are various text files in the Documentation/ subdirectory,
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several of them using the Restructured Text markup notation.
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Please read the Documentation/process/changes.rst file, as it contains the
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requirements for building and running the kernel, and information about
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the problems which may result by upgrading your kernel.

‎travis-ci/vmtest/configs/blacklist/BLACKLIST-latest‎

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# TEMPORARY
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‎travis-ci/vmtest/configs/blacklist/BLACKLIST-latest.s390x‎

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# TEMPORARY
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atomics # attach(add): actual -524 <= expected 0 (trampoline)
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bpf_iter_setsockopt # JIT does not support calling kernel function (kfunc)
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bloom_filter_map # failed to find kernel BTF type ID of '__x64_sys_getpgid': -3 (?)
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bpf_tcp_ca # JIT does not support calling kernel function (kfunc)
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bpf_loop # attaches to __x64_sys_nanosleep
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bpf_mod_race # BPF trampoline
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bpf_nf # JIT does not support calling kernel function
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core_read_macros # unknown func bpf_probe_read#4 (overlapping)
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d_path # failed to auto-attach program 'prog_stat': -524 (trampoline)
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dummy_st_ops # test_run unexpected error: -524 (errno 524) (trampoline)
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fentry_fexit # fentry attach failed: -524 (trampoline)
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fentry_test # fentry_first_attach unexpected error: -524 (trampoline)
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fexit_bpf2bpf # freplace_attach_trace unexpected error: -524 (trampoline)
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fexit_sleep # fexit_skel_load fexit skeleton failed (trampoline)
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fexit_stress # fexit attach failed prog 0 failed: -524 (trampoline)
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fexit_test # fexit_first_attach unexpected error: -524 (trampoline)
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get_func_args_test # trampoline
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get_func_ip_test # get_func_ip_test__attach unexpected error: -524 (trampoline)
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get_stack_raw_tp # user_stack corrupted user stack (no backchain userspace)
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kfree_skb # attach fentry unexpected error: -524 (trampoline)
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kfunc_call # 'bpf_prog_active': not found in kernel BTF (?)
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ksyms_module # test_ksyms_module__open_and_load unexpected error: -9 (?)
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ksyms_module_libbpf # JIT does not support calling kernel function (kfunc)
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ksyms_module_lskel # test_ksyms_module_lskel__open_and_load unexpected error: -9 (?)
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modify_return # modify_return attach failed: -524 (trampoline)
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module_attach # skel_attach skeleton attach failed: -524 (trampoline)
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kprobe_multi_test # relies on fentry
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netcnt # failed to load BPF skeleton 'netcnt_prog': -7 (?)
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probe_user # check_kprobe_res wrong kprobe res from probe read (?)
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recursion # skel_attach unexpected error: -524 (trampoline)
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ringbuf # skel_load skeleton load failed (?)
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sk_assign # Can't read on server: Invalid argument (?)
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sk_lookup # endianness problem
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sk_storage_tracing # test_sk_storage_tracing__attach unexpected error: -524 (trampoline)
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skc_to_unix_sock # could not attach BPF object unexpected error: -524 (trampoline)
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socket_cookie # prog_attach unexpected error: -524 (trampoline)
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stacktrace_build_id # compare_map_keys stackid_hmap vs. stackmap err -2 errno 2 (?)
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tailcalls # tail_calls are not allowed in non-JITed programs with bpf-to-bpf calls (?)
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task_local_storage # failed to auto-attach program 'trace_exit_creds': -524 (trampoline)
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test_bpffs # bpffs test failed 255 (iterator)
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test_bprm_opts # failed to auto-attach program 'secure_exec': -524 (trampoline)
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test_ima # failed to auto-attach program 'ima': -524 (trampoline)
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test_local_storage # failed to auto-attach program 'unlink_hook': -524 (trampoline)
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test_lsm # failed to find kernel BTF type ID of '__x64_sys_setdomainname': -3 (?)
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test_overhead # attach_fentry unexpected error: -524 (trampoline)
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test_profiler # unknown func bpf_probe_read_str#45 (overlapping)
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timer # failed to auto-attach program 'test1': -524 (trampoline)
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timer_crash # trampoline
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timer_mim # failed to auto-attach program 'test1': -524 (trampoline)
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trace_ext # failed to auto-attach program 'test_pkt_md_access_new': -524 (trampoline)
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trace_printk # trace_printk__load unexpected error: -2 (errno 2) (?)
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trace_vprintk # trace_vprintk__open_and_load unexpected error: -9 (?)
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trampoline_count # prog 'prog1': failed to attach: ERROR: strerror_r(-524)=22 (trampoline)
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verif_stats # trace_vprintk__open_and_load unexpected error: -9 (?)
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vmlinux # failed to auto-attach program 'handle__fentry': -524 (trampoline)
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xdp_adjust_tail # case-128 err 0 errno 28 retval 1 size 128 expect-size 3520 (?)
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xdp_bonding # failed to auto-attach program 'trace_on_entry': -524 (trampoline)
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xdp_bpf2bpf # failed to auto-attach program 'trace_on_entry': -524 (trampoline)
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map_kptr # failed to open_and_load program: -524 (trampoline)
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bpf_cookie # failed to open_and_load program: -524 (trampoline)
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xdp_do_redirect # prog_run_max_size unexpected error: -22 (errno 22)
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send_signal # intermittently fails to receive signal
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select_reuseport # intermittently fails on new s390x setup
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tc_redirect/tc_redirect_dtime # very flaky

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