[chore]: Bump github.com/KimMachineGun/automemlimit from 0.2.4 to 0.2.5 (#1666)

Bumps [github.com/KimMachineGun/automemlimit](https://github.com/KimMachineGun/automemlimit) from 0.2.4 to 0.2.5.
- [Release notes](https://github.com/KimMachineGun/automemlimit/releases)
- [Commits](https://github.com/KimMachineGun/automemlimit/compare/v0.2.4...v0.2.5)

---
updated-dependencies:
- dependency-name: github.com/KimMachineGun/automemlimit
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

1 files changed, 105 insertions, 51 deletions

diff --git a/vendor/github.com/cilium/ebpf/run-tests.sh b/vendor/github.com/cilium/ebpf/run-tests.sh
index 647a61aab..c21cca9e5 100644
--- a/vendor/github.com/cilium/ebpf/run-tests.sh
+++ b/vendor/github.com/cilium/ebpf/run-tests.sh
@@ -1,91 +1,145 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Test the current package under a different kernel.
 # Requires virtme and qemu to be installed.
+# Examples:
+#     Run all tests on a 5.4 kernel
+#     $ ./run-tests.sh 5.4
+#     Run a subset of tests:
+#     $ ./run-tests.sh 5.4 ./link
+
+set -euo pipefail
+
+script="$(realpath "$0")"
+readonly script
+
+# This script is a bit like a Matryoshka doll since it keeps re-executing itself
+# in various different contexts:
+#
+#   1. invoked by the user like run-tests.sh 5.4
+#   2. invoked by go test like run-tests.sh --exec-vm
+#   3. invoked by init in the vm like run-tests.sh --exec-test
+#
+# This allows us to use all available CPU on the host machine to compile our
+# code, and then only use the VM to execute the test. This is because the VM
+# is usually slower at compiling than the host.
+if [[ "${1:-}" = "--exec-vm" ]]; then
+  shift
+
+  input="$1"
+  shift
 
-set -eu
-set -o pipefail
+  # Use sudo if /dev/kvm isn't accessible by the current user.
+  sudo=""
+  if [[ ! -r /dev/kvm || ! -w /dev/kvm ]]; then
+    sudo="sudo"
+  fi
+  readonly sudo
+
+  testdir="$(dirname "$1")"
+  output="$(mktemp -d)"
+  printf -v cmd "%q " "$@"
+
+  if [[ "$(stat -c '%t:%T' -L /proc/$$/fd/0)" == "1:3" ]]; then
+    # stdin is /dev/null, which doesn't play well with qemu. Use a fifo as a
+    # blocking substitute.
+    mkfifo "${output}/fake-stdin"
+    # Open for reading and writing to avoid blocking.
+    exec 0<> "${output}/fake-stdin"
+    rm "${output}/fake-stdin"
+  fi
 
-if [[ "${1:-}" = "--in-vm" ]]; then
+  for ((i = 0; i < 3; i++)); do
+    if ! $sudo virtme-run --kimg "${input}/bzImage" --memory 768M --pwd \
+      --rwdir="${testdir}=${testdir}" \
+      --rodir=/run/input="${input}" \
+      --rwdir=/run/output="${output}" \
+      --script-sh "PATH=\"$PATH\" CI_MAX_KERNEL_VERSION="${CI_MAX_KERNEL_VERSION:-}" \"$script\" --exec-test $cmd" \
+      --kopt possible_cpus=2; then # need at least two CPUs for some tests
+      exit 23
+    fi
+
+    if [[ -e "${output}/status" ]]; then
+      break
+    fi
+
+    if [[ -v CI ]]; then
+      echo "Retrying test run due to qemu crash"
+      continue
+    fi
+
+    exit 42
+  done
+
+  rc=$(<"${output}/status")
+  $sudo rm -r "$output"
+  exit $rc
+elif [[ "${1:-}" = "--exec-test" ]]; then
   shift
 
   mount -t bpf bpf /sys/fs/bpf
-  export CGO_ENABLED=0
-  export GOFLAGS=-mod=readonly
-  export GOPATH=/run/go-path
-  export GOPROXY=file:///run/go-path/pkg/mod/cache/download
-  export GOSUMDB=off
-  export GOCACHE=/run/go-cache
+  mount -t tracefs tracefs /sys/kernel/debug/tracing
 
   if [[ -d "/run/input/bpf" ]]; then
     export KERNEL_SELFTESTS="/run/input/bpf"
   fi
 
-  readonly output="${1}"
-  shift
-
-  echo Running tests...
-  go test -v -coverpkg=./... -coverprofile="$output/coverage.txt" -count 1 ./...
-  touch "$output/success"
-  exit 0
-fi
-
-# Pull all dependencies, so that we can run tests without the
-# vm having network access.
-go mod download
+  if [[ -f "/run/input/bpf/bpf_testmod/bpf_testmod.ko" ]]; then
+    insmod "/run/input/bpf/bpf_testmod/bpf_testmod.ko"
+  fi
 
-# Use sudo if /dev/kvm isn't accessible by the current user.
-sudo=""
-if [[ ! -r /dev/kvm || ! -w /dev/kvm ]]; then
-  sudo="sudo"
+  dmesg --clear
+  rc=0
+  "$@" || rc=$?
+  dmesg
+  echo $rc > "/run/output/status"
+  exit $rc # this return code is "swallowed" by qemu
 fi
-readonly sudo
 
 readonly kernel_version="${1:-}"
 if [[ -z "${kernel_version}" ]]; then
   echo "Expecting kernel version as first argument"
   exit 1
 fi
+shift
 
 readonly kernel="linux-${kernel_version}.bz"
-readonly selftests="linux-${kernel_version}-selftests-bpf.bz"
+readonly selftests="linux-${kernel_version}-selftests-bpf.tgz"
 readonly input="$(mktemp -d)"
-readonly output="$(mktemp -d)"
 readonly tmp_dir="${TMPDIR:-/tmp}"
 readonly branch="${BRANCH:-master}"
 
 fetch() {
     echo Fetching "${1}"
-    wget -nv -N -P "${tmp_dir}" "https://github.com/cilium/ci-kernels/raw/${branch}/${1}"
+    pushd "${tmp_dir}" > /dev/null
+    curl -s -L -O --fail --etag-compare "${1}.etag" --etag-save "${1}.etag" "https://github.com/cilium/ci-kernels/raw/${branch}/${1}"
+    local ret=$?
+    popd > /dev/null
+    return $ret
 }
 
 fetch "${kernel}"
+cp "${tmp_dir}/${kernel}" "${input}/bzImage"
 
 if fetch "${selftests}"; then
+  echo "Decompressing selftests"
   mkdir "${input}/bpf"
-  tar --strip-components=4 -xjf "${tmp_dir}/${selftests}" -C "${input}/bpf"
+  tar --strip-components=4 -xf "${tmp_dir}/${selftests}" -C "${input}/bpf"
 else
   echo "No selftests found, disabling"
 fi
 
-echo Testing on "${kernel_version}"
-$sudo virtme-run --kimg "${tmp_dir}/${kernel}" --memory 512M --pwd \
-  --rw \
-  --rwdir=/run/input="${input}" \
-  --rwdir=/run/output="${output}" \
-  --rodir=/run/go-path="$(go env GOPATH)" \
-  --rwdir=/run/go-cache="$(go env GOCACHE)" \
-  --script-sh "PATH=\"$PATH\" $(realpath "$0") --in-vm /run/output" \
-  --qemu-opts -smp 2 # need at least two CPUs for some tests
-
-if [[ ! -e "${output}/success" ]]; then
-  echo "Test failed on ${kernel_version}"
-  exit 1
-else
-  echo "Test successful on ${kernel_version}"
-  if [[ -v COVERALLS_TOKEN ]]; then
-    goveralls -coverprofile="${output}/coverage.txt" -service=semaphore -repotoken "$COVERALLS_TOKEN"
-  fi
+args=(-short -coverpkg=./... -coverprofile=coverage.out -count 1 ./...)
+if (( $# > 0 )); then
+  args=("$@")
 fi
 
-$sudo rm -r "${input}"
-$sudo rm -r "${output}"
+export GOFLAGS=-mod=readonly
+export CGO_ENABLED=0
+# LINUX_VERSION_CODE test compares this to discovered value.
+export KERNEL_VERSION="${kernel_version}"
+
+echo Testing on "${kernel_version}"
+go test -exec "$script --exec-vm $input" "${args[@]}"
+echo "Test successful on ${kernel_version}"
+
+rm -r "${input}"