Date: Thu, 7 Nov 2019 14:16:55 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r354442 - user/pho/stress2/misc Message-ID: <201911071416.xA7EGt2J022019@repo.freebsd.org>
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Author: pho Date: Thu Nov 7 14:16:55 2019 New Revision: 354442 URL: https://svnweb.freebsd.org/changeset/base/354442 Log: Added a regression test. Added: user/pho/stress2/misc/pipe3.sh (contents, props changed) Added: user/pho/stress2/misc/pipe3.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/pipe3.sh Thu Nov 7 14:16:55 2019 (r354442) @@ -0,0 +1,150 @@ +#!/bin/sh + +# +# SPDX-License-Identifier: BSD-2-Clause-FreeBSD +# +# Copyright (c) 2019 Peter Holm +# +# 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. +# +# $FreeBSD$ +# + +# pipe(2) tests. +# "panic: vm_page_dequeue: queued unlocked page 0xfffffe0019a73518" seen. + +# Reported by syzkaller +# Fixed by r354400 + +. ../default.cfg + +dir=/tmp +odir=`pwd` +cd $dir +sed '1,/^EOF/d' < $odir/$0 > $dir/pipe3.c +mycc -o pipe3 -Wall -Wextra -O0 -g pipe3.c || exit 1 +rm -f pipe3.c +cd $odir + +(cd ../testcases/swap; ./swap -t 5m -i 20 -l 100) & +sleep 1 +for i in `jot 25`; do + /tmp/pipe3 & +done +while pkill -0 pipe3; do sleep 2; done +while pkill -9 swap; do sleep 1; done +wait +rm -rf /tmp/pipe3 +exit 0 + +EOF +#include <sys/types.h> +#include <sys/wait.h> + +#include <err.h> +#include <signal.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <time.h> +#include <unistd.h> + +#define PARALLEL 64 +#define RUNTIME (5 * 60) + +static void +handler(int i __unused) { + _exit(0); +} + +void +test(void) +{ + int fds[2], r; + char c; + + if (pipe(fds) == -1) + err(1, "pipe"); + + if (fork() == 0) { + signal(SIGALRM, handler); + ualarm(1 + arc4random() % 10000, 0); + close(fds[1]); + if ((r = write(fds[0], &c, sizeof(c))) != sizeof(c)) + if (r == -1) + err(1, "pipe write"); + _exit(0); + } + signal(SIGALRM, handler); + ualarm(1 + arc4random() % 10000, 0); + close(fds[0]); + if ((r = read(fds[1], &c, sizeof(c))) != sizeof(c)) + if (r == -1) + err(1, "pipe read"); + wait(NULL); + _exit(0); +} + +int +main(void) +{ + pid_t pids[PARALLEL], rpid; + time_t start; + int i, running, status; + bool done; + + for (i = 0; i < PARALLEL; i++) + pids[i] = 0; + running = 0; + start = time(NULL); + for (;;) { + done = (time(NULL) - start) >= RUNTIME; + for (i = 0; i < PARALLEL; i++) { + if (pids[i] == 0 && !done) { + if ((pids[i] = fork()) == 0) + test(); + if (pids[i] == -1) + err(1, "fork()"); + running++; + } + } + for (i = 0; i < PARALLEL; i++) { + if (pids[i] != 0) { + if ((rpid = waitpid(pids[i], &status, + WNOHANG)) == -1) + err(1, "waitpid(%d)", pids[i]); + if (rpid == 0) + continue; + if (rpid != pids[i]) + err(1, "waitpid(%d)", pids[i]); + running --; + pids[i] = 0; + break; + } + } + if (running == 0 && done) + break; + usleep(100); + } + + return (0); +}
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