Date: Sat, 31 Dec 2016 16:02:27 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r310978 - user/pho/stress2/misc Message-ID: <201612311602.uBVG2RDD068355@repo.freebsd.org>
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Author: pho Date: Sat Dec 31 16:02:27 2016 New Revision: 310978 URL: https://svnweb.freebsd.org/changeset/base/310978 Log: Added a regression test. Sponsored by: Dell EMC Isilon In collaboration with: kib Added: user/pho/stress2/misc/shm.sh (contents, props changed) Added: user/pho/stress2/misc/shm.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/shm.sh Sat Dec 31 16:02:27 2016 (r310978) @@ -0,0 +1,203 @@ +#!/bin/sh + +# +# Copyright (c) 2016 Dell EMC Isilon +# All rights reserved. +# +# 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. +# +# $FreeBSD$ +# + +# Regression test for r310849. Hang in "vmpfw" was seen. + +# Test scenario suggestion by kib. + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 + +. ../default.cfg + +RUNTIME=60 +old=`sysctl -n kern.ipc.shm_use_phys` +trap "sysctl kern.ipc.shm_use_phys=$old" EXIT INT +sysctl kern.ipc.shm_use_phys=1 + +dir=/tmp +odir=`pwd` +cd $dir +sed '1,/^EOF/d' < $odir/$0 > $dir/shm.c +mycc -o shm -Wall -Wextra -O0 -g shm.c -pthread || exit 1 +rm -f shm.c + +/tmp/shm & + +s=0 +sleep $RUNTIME +if pgrep -q shm; then + if pgrep shm | xargs ps -lHp | grep -q vmpfw; then + s=1 + echo FAIL + pgrep shm | xargs ps -lHp + pkill -9 shm + fi +fi +wait + +rm -rf /tmp/shm +exit $s + +EOF +#include <sys/param.h> +#include <sys/ipc.h> +#include <sys/mman.h> +#include <sys/shm.h> +#include <sys/stat.h> +#include <sys/wait.h> + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <pthread.h> +#include <pthread_np.h> +#include <stdio.h> +#include <stdlib.h> +#include <time.h> +#include <unistd.h> + +static void *shmp; +static size_t len; +static int cont, shmid; + +#define PAGES 64 +#define RUNTIME (1 * 60) +#define STOP 1 +#define SYNC 0 + +static void +cleanup(void) +{ + if (shmp != MAP_FAILED) + shmdt(shmp); + if (shmid != 0) + shmctl(shmid, IPC_RMID, NULL); +} + +static void * +t1(void *arg __unused) +{ + time_t start; + char *cp; + + pthread_set_name_np(pthread_self(), __func__); + start = time(NULL); + while (cont == 1 && (time(NULL) - start) < RUNTIME) { + if ((cp = mmap(NULL, len, PROT_READ | PROT_WRITE, + MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) + err(1, "mmap"); + usleep(arc4random() % 400); + if (munmap(cp, len) == -1) + warn("unmap(%p, %zu)", shmp, len); + } + + return (NULL); +} + +static void * +t2(void *arg __unused) +{ + key_t shmkey; + size_t i; + time_t start; + char *cp; + + pthread_set_name_np(pthread_self(), __func__); + shmkey = ftok("/tmp", getpid()); + start = time(NULL); + atexit(cleanup); + while ((time(NULL) - start) < RUNTIME) { + if ((shmid = shmget(shmkey, len, IPC_CREAT | IPC_EXCL | + 0640)) == -1) { + if (errno != ENOSPC && errno != EEXIST) + err(1, "shmget (%s:%d)", __FILE__, __LINE__); + break; + } + if ((shmp = shmat(shmid, NULL, 0)) == (void *) -1) + break; + cp = (char *)(shmp); + for (i = 0; i < len; i = i + PAGE_SIZE) + cp[i] = 1; + if (shmdt(shmp) == -1) { + if (errno != EINVAL) + warn("shmdt(%p)", shmp); + } + if (shmctl(shmid, IPC_RMID, NULL) == -1) + warn("shmctl IPC_RMID"); + usleep(50); + + shmp = MAP_FAILED; + shmid = 0; + } + cont = 0; + + return (NULL); +} + +static int +test(void) +{ + pthread_t tid[2]; + int i, rc; + + shmp = MAP_FAILED; + + cont = 1; + if ((rc = pthread_create(&tid[0], NULL, t1, NULL)) != 0) + errc(1, rc, "pthread_create()"); + if ((rc = pthread_create(&tid[1], NULL, t2, NULL)) != 0) + errc(1, rc, "pthread_create()"); + + for (i = 0; i < 2; i++) + if ((rc = pthread_join(tid[i], NULL)) != 0) + errc(1, rc, "pthread_join(%d)", i); + + return (0); +} + +int +main(void) +{ + pid_t pid; + time_t start; + + len = PAGES * PAGE_SIZE; + start = time(NULL); + while ((time(NULL) - start) < RUNTIME) { + if ((pid = fork()) == 0) { + test(); + exit(0); /* calls cleanup() */ + } + if (waitpid(pid, NULL,0) != pid) + err(1, "waitpid(%d)", pid); + } + + return(0); +}
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