Date: Mon, 22 Jul 2019 07:19:46 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r350208 - user/pho/stress2/misc Message-ID: <201907220719.x6M7Jkjm031127@repo.freebsd.org>
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Author: pho Date: Mon Jul 22 07:19:46 2019 New Revision: 350208 URL: https://svnweb.freebsd.org/changeset/base/350208 Log: Added a regression test. Sponsored by: Dell EMC Isilon Added: user/pho/stress2/misc/sem_wait.sh (contents, props changed) Added: user/pho/stress2/misc/sem_wait.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/sem_wait.sh Mon Jul 22 07:19:46 2019 (r350208) @@ -0,0 +1,106 @@ +#!/bin/sh + +# +# SPDX-License-Identifier: BSD-2-Clause-FreeBSD +# +# Copyright (c) 2019 Dell EMC Isilon +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# $FreeBSD$ +# + +# "panic: vm_page_free_prep: freeing mapped page 0x657936c" seen. +# https://people.freebsd.org/~pho/stress/log/sem_wait.txt +# Fixed by r350005 + +. ../default.cfg + +cat > /tmp/sem_wait.c <<EOF +#include <sys/param.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <sys/wait.h> + +#include <err.h> +#include <pthread.h> +#include <semaphore.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <unistd.h> + +static sem_t *semaphore; + +static void * +test(void) { + + for (;;) { + if (sem_wait(semaphore) == -1) + err(1, "sem_wait"); + if (sem_post(semaphore) == -1) + err(1, "sem_post"); + } +} + +int +main(void) { + pid_t pid; + size_t len; + time_t start; + + len = PAGE_SIZE; + if ((semaphore = mmap(NULL, len, PROT_READ | PROT_WRITE, + MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) + err(1, "mmap"); + + // initialize semaphore and set value to 1 + if (sem_init(semaphore, 1, 1) == -1) + err(1, "sem_init"); + + if ((pid = fork()) == 0) + test(); + if (pid == -1) + err(1, "fork()"); + + usleep(50); + alarm(300); + start = time(NULL); + while (time(NULL) - start < 60) { + if (sem_wait(semaphore) == -1) + err(1, "sem_wait"); + if (sem_post(semaphore) == -1) + err(1, "sem_post"); + } + kill(pid, SIGHUP); + if (waitpid(pid, NULL, 0) != pid) + err(1, "waitpid()"); + + return (0); +} +EOF +mycc -o /tmp/sem_wait -Wall -Wextra -O2 /tmp/sem_wait.c || exit 1 +/tmp/sem_wait; s=$? +rm -f /tmp/sem_wait /tmp/sem_wait.c +exit $s
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