1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5# 6# Copyright (c) 2018 Dell EMC Isilon 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27# SUCH DAMAGE. 28# 29 30# Test based on scenario by Babcia Padlina 31 32# "panic: mutex pipe mutex not owned at sys_pipe.c:1769" seen: 33# https://people.freebsd.org/~pho/stress/log/kevent13.txt 34# Fixed by r235640. 35 36. ../default.cfg 37 38odir=`pwd` 39cd /tmp 40sed '1,/^EOF/d' < $odir/$0 > kevent13.c 41cc -o kevent13 -Wall kevent13.c -lpthread 42rm -f kevent13.c 43 44[ -d "$RUNDIR" ] || mkdir -p $RUNDIR 45cd $RUNDIR 46start=`date +%s` 47while [ $((`date +%s` - start)) -lt 300 ]; do 48 for i in `jot 10`; do 49 /tmp/kevent13 & 50 /tmp/kevent13 & 51 wait 52 done 53done 54 55rm -f /tmp/kevent13 56exit 0 57EOF 58/* 59 * 29.08.2009, babcia padlina 60 */ 61 62#include <sys/types.h> 63#include <sys/event.h> 64#include <sys/param.h> 65#include <sys/timespec.h> 66#include <unistd.h> 67 68#include <err.h> 69#include <fcntl.h> 70#include <pthread.h> 71#include <stdio.h> 72#include <stdlib.h> 73#include <string.h> 74 75#define LOOPS 200000 76 77struct kevent kev[2], ke[2]; 78struct timespec timeout; 79volatile int go; 80int fd[2], kq; 81 82void 83do_thread(void) { 84 int i; 85 86 go = 1; 87 for (i = 0; i < LOOPS; i++) { 88 if (pipe(fd) < 0) 89 err(1, "pipe"); 90 memset(&kev, 0, sizeof(kev)); 91 EV_SET(&kev[0], fd[0], EVFILT_READ, EV_ADD | EV_CLEAR, 0, 0, NULL); 92 EV_SET(&kev[1], fd[1], EVFILT_WRITE, EV_ADD | EV_CLEAR, 0, 0, NULL); 93 94 if (kevent(kq, kev, 2, ke, 2, &timeout) < 0) 95 err(1, "kevent"); 96 97 close(fd[0]); 98 close(fd[1]); 99 } 100} 101 102void 103do_thread2(void) { 104 int i; 105 106 while (go == 0) 107 usleep(10); 108 for (i = 0; i < LOOPS; i++) { 109 if (arc4random() % 2 == 0) { 110 close(fd[0]); 111 close(fd[1]); 112 } else { 113 close(fd[1]); 114 close(fd[0]); 115 } 116 } 117} 118 119int 120main(void) { 121 pthread_t pth, pth2; 122 int r; 123 124 if ((kq = kqueue()) < 0) 125 err(1, "kqueue"); 126 127 if ((r = pthread_create(&pth, NULL, (void *)do_thread, NULL)) != 0) 128 errc(1, r, "pthread_create"); 129 if ((r = pthread_create(&pth2, NULL, (void *)do_thread2, NULL)) != 0) 130 errc(1, r, "pthread_create"); 131 132 timeout.tv_sec = 0; 133 timeout.tv_nsec = 1; 134 135 if ((r = pthread_join(pth, NULL)) != 0) 136 errc(1, r, "pthread_join"); 137 if ((r = pthread_join(pth2, NULL)) != 0) 138 errc(1, r, "pthread_join"); 139 140 return (0); 141} 142