Date: Mon, 10 Feb 2020 08:55:12 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r357720 - user/pho/stress2/misc Message-ID: <202002100855.01A8tC08060313@repo.freebsd.org>
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Author: pho Date: Mon Feb 10 08:55:11 2020 New Revision: 357720 URL: https://svnweb.freebsd.org/changeset/base/357720 Log: Added a regression test. Added: user/pho/stress2/misc/mlockall6.sh (contents, props changed) Added: user/pho/stress2/misc/mlockall6.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/mlockall6.sh Mon Feb 10 08:55:11 2020 (r357720) @@ -0,0 +1,205 @@ +#!/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: Lock (rw) vm object not locked @ vm/vm_page.c:1013" seen: +# https://people.freebsd.org/~pho/stress/log/mlockall6-2.txt + +. ../default.cfg + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 +[ `swapinfo | wc -l` -eq 1 ] && exit 0 + +dir=/tmp +odir=`pwd` +cd $dir +sed '1,/^EOF/d' < $odir/$0 > $dir/mlockall6.c +mycc -o mlockall6 -Wall -Wextra -O0 -g mlockall6.c || exit 1 +rm -f mlockall6.c +cd $odir + +mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint +mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart +mdconfig -a -t swap -s 512m -u $mdstart || exit 1 +bsdlabel -w md$mdstart auto +newfs $newfs_flags -n md${mdstart}$part > /dev/null +mount /dev/md${mdstart}$part $mntpoint || exit 1 + +daemon sh -c "(cd $odir/../testcases/swap; ./swap -t 20m -i 20 -l 100)" \ + > /dev/null 2>&1 +sleep 2 + +(cd $mntpoint; /tmp/mlockall6 || echo FAIL) + +while pgrep -q swap; do + pkill -9 swap +done + +n=0 +while mount | grep "on $mntpoint " | grep -q /dev/md; do + umount $mntpoint || sleep 1 + n=$((n + 1)) + [ $n -gt 10 ] && { echo FAIL; exit 1; } +done +mdconfig -d -u $mdstart +rm -rf /tmp/mlockall6 +exit 0 + +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> + +#define LOOPS 2 +#define PARALLEL 8 +#define R0 0 +#define R1 1 +#define R2 2 +#define RUNTIME (10 * 60) + +static volatile u_int *share; +static int ps; +static char c[32 * 1024 * 1024]; + +static void +touch(void) +{ + int i; + + for (i = 0; i < (int)sizeof(c); i += ps) + c[i] = 1; +} + +static void +test2(void) +{ + pid_t pid; + volatile u_int *share2; + size_t len; + int i, status; + + len = ps; + if ((share2 = mmap(NULL, len, PROT_READ | PROT_WRITE, + MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) + err(1, "mmap"); + touch(); + usleep(arc4random() % 100000); + alarm(600); + if ((pid = fork()) == 0) { + alarm(600); + while (share2[R1] == 0) /* Wait for parent */ + ; + atomic_add_int(&share2[R1], 1); + if (arc4random() % 100 < 50) + usleep(arc4random() % 1000); + if (mlockall(MCL_CURRENT | MCL_FUTURE) == -1) + err(1, "mlock"); + touch(); + atomic_add_int(&share2[R2], 1); + _exit(0); + } + atomic_add_int(&share2[R1], 1); + while (share2[R1] != 2) /* Wait for child */ + ; + + for (i = 0; i < 100000 && share2[R2] == 0; i++) + touch(); /* while child is running */ + + if (waitpid(pid, &status, 0) == -1) + err(1, "wait"); + + if (status != 0) + fprintf(stderr, "Got signal %d\n", WTERMSIG(status)); + _exit(WTERMSIG(status)); +} + +static void +test(void) +{ + pid_t pid; + int i, s, status; + + while (share[R0] == 0) + ; + s = 0; + for (i = 0; i < LOOPS; i++) { + if ((pid = fork()) == 0) + test2(); + waitpid(pid, &status, 0); + s = (s == 0) ? status : s; + } + _exit(s); +} + +int +main(void) +{ + pid_t pid; + size_t len; + time_t start; + int i, s, status; + + ps = getpagesize(); + len = ps; + if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, + MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) + err(1, "mmap"); + start = time(NULL); + s = 0; + while (s == 0 && (time(NULL) - start) < RUNTIME) { + for (i = 0; i < PARALLEL; i++) { + if ((pid = fork()) == 0) + test(); + } + atomic_add_int(&share[R0], 1); /* Start test() runs */ + for (i = 0; i < PARALLEL; i++) { + waitpid(pid, &status, 0); + if (status != 0) { + fprintf(stderr, "FAIL: status = %d\n", + status); + } + s = (s == 0) ? status : s; + } + atomic_add_int(&share[R0], -1); + } + + return (s); +}
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