Date: Wed, 23 Aug 2017 11:52:02 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r322809 - user/pho/stress2/misc Message-ID: <201708231152.v7NBq217066026@repo.freebsd.org>
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Author: pho Date: Wed Aug 23 11:52:02 2017 New Revision: 322809 URL: https://svnweb.freebsd.org/changeset/base/322809 Log: Added a regression test. Sponsored by: Dell EMC Isilon Added: user/pho/stress2/misc/fsgs.sh (contents, props changed) Added: user/pho/stress2/misc/fsgs.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/fsgs.sh Wed Aug 23 11:52:02 2017 (r322809) @@ -0,0 +1,135 @@ +#!/bin/sh + +# +# Copyright (c) 2017 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 r322799: +# Ensure that fs/gs bases are stored in pcb before copying the pcb for +# new process or thread. + +# "Exit status is 139" seen. + +# Test scenario suggestion by kib@ + +. ../default.cfg + +dir=/tmp +odir=`pwd` +cd $dir +sed '1,/^EOF/d' < $odir/$0 > $dir/fsgs.c +mycc -o fsgs -Wall -Wextra -O0 -g fsgs.c || exit 1 +rm -f fsgs.c +cd $odir + +/tmp/fsgs +s=$? + +rm -rf /tmp/fsgs +exit $s + +EOF +#include <sys/param.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <sys/wait.h> + +#include <machine/atomic.h> + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <time.h> +#include <unistd.h> + +static volatile u_int *share; + +#define PARALLEL 4 +#define RUNTIME (1 * 60) +#define SYNC 0 + +static void +test(void) +{ + pid_t pid; + int i, status; + volatile char *cp; + + atomic_add_int(&share[SYNC], 1); + while (share[SYNC] != PARALLEL) + ; + + for (i = 0; i < 100; i++) { + if ((pid = fork()) == 0) { + cp = malloc(2); + _exit(0); + } + if (waitpid(pid, &status, 0) != pid) + err(1, "waitpid(%d)", pid); + if (status != 0) { + fprintf(stderr, "Exit status is %d\n", status); + exit(1); + } + } + + _exit(0); +} + +int +main(void) +{ + pid_t pids[PARALLEL]; + size_t len; + time_t start; + int e, i, status; + + e = 0; + len = PAGE_SIZE; + if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, + MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) + err(1, "mmap"); + + start = time(NULL); + while ((time(NULL) - start) < RUNTIME && e == 0) { + share[SYNC] = 0; + for (i = 0; i < PARALLEL; i++) { + if ((pids[i] = fork()) == 0) + test(); + if (pids[i] == -1) + err(1, "fork()"); + } + for (i = 0; i < PARALLEL; i++) { + if (waitpid(pids[i], &status, 0) == -1) + err(1, "waitpid(%d)", pids[i]); + e += status == 0 ? 0 : 1; + } + } + + return (e); +}
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