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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657#!/bin/bash# SPDX-License-Identifier: GPL-2.0# Copyright (C) 2023 SUSE# Author: Marcos Paulo de Souza <mpdesouza@suse.com>
. $(dirname $0)/functions.sh
MOD_SYSCALL=test_klp_syscall
setup_config
# - Start _NRPROC processes calling getpid and load a livepatch to patch the# getpid syscall. Check if all the processes transitioned to the livepatched# state.
start_test "patch getpid syscall while being heavily hammered"
NPROC=$(getconf _NPROCESSORS_ONLN)MAXPROC=128
for i in $(seq 1 $(($NPROC < $MAXPROC ? $NPROC : $MAXPROC))); do ./test_klp-call_getpid & pids[$i]="$!"done
pid_list=$(echo ${pids[@]} | tr ' ' ',')load_lp $MOD_SYSCALL klp_pids=$pid_list
# wait for all tasks to transition to patched stateloop_until 'grep -q '^0$' $SYSFS_KERNEL_DIR/$MOD_SYSCALL/npids'
pending_pids=$(cat $SYSFS_KERNEL_DIR/$MOD_SYSCALL/npids)log "$MOD_SYSCALL: Remaining not livepatched processes: $pending_pids"
for pid in ${pids[@]}; do kill $pid || truedone
disable_lp $MOD_SYSCALLunload_lp $MOD_SYSCALL
check_result "% insmod test_modules/$MOD_SYSCALL.ko klp_pids=$pid_listlivepatch: enabling patch '$MOD_SYSCALL'livepatch: '$MOD_SYSCALL': initializing patching transitionlivepatch: '$MOD_SYSCALL': starting patching transitionlivepatch: '$MOD_SYSCALL': completing patching transitionlivepatch: '$MOD_SYSCALL': patching complete$MOD_SYSCALL: Remaining not livepatched processes: 0% echo 0 > $SYSFS_KLP_DIR/$MOD_SYSCALL/enabledlivepatch: '$MOD_SYSCALL': initializing unpatching transitionlivepatch: '$MOD_SYSCALL': starting unpatching transitionlivepatch: '$MOD_SYSCALL': completing unpatching transitionlivepatch: '$MOD_SYSCALL': unpatching complete% rmmod $MOD_SYSCALL"
exit 0