1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
#!/bin/sh
#
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2018 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.
#
# Test based on scenario by Babcia Padlina
# "panic: mutex pipe mutex not owned at sys_pipe.c:1769" seen:
# https://people.freebsd.org/~pho/stress/log/kevent13.txt
# Fixed by r235640.
. ../default.cfg
odir=`pwd`
cd /tmp
sed '1,/^EOF/d' < $odir/$0 > kevent13.c
cc -o kevent13 -Wall kevent13.c -lpthread
rm -f kevent13.c
[ -d "$RUNDIR" ] || mkdir -p $RUNDIR
cd $RUNDIR
start=`date +%s`
while [ $((`date +%s` - start)) -lt 300 ]; do
for i in `jot 10`; do
/tmp/kevent13 &
/tmp/kevent13 &
wait
done
done
rm -f /tmp/kevent13
exit 0
EOF
/*
* 29.08.2009, babcia padlina
*/
#include <sys/types.h>
#include <sys/event.h>
#include <sys/param.h>
#include <sys/timespec.h>
#include <unistd.h>
#include <err.h>
#include <fcntl.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define LOOPS 200000
struct kevent kev[2], ke[2];
struct timespec timeout;
volatile int go;
int fd[2], kq;
void
do_thread(void) {
int i;
go = 1;
for (i = 0; i < LOOPS; i++) {
if (pipe(fd) < 0)
err(1, "pipe");
memset(&kev, 0, sizeof(kev));
EV_SET(&kev[0], fd[0], EVFILT_READ, EV_ADD | EV_CLEAR, 0, 0, NULL);
EV_SET(&kev[1], fd[1], EVFILT_WRITE, EV_ADD | EV_CLEAR, 0, 0, NULL);
if (kevent(kq, kev, 2, ke, 2, &timeout) < 0)
err(1, "kevent");
close(fd[0]);
close(fd[1]);
}
}
void
do_thread2(void) {
int i;
while (go == 0)
usleep(10);
for (i = 0; i < LOOPS; i++) {
if (arc4random() % 2 == 0) {
close(fd[0]);
close(fd[1]);
} else {
close(fd[1]);
close(fd[0]);
}
}
}
int
main(void) {
pthread_t pth, pth2;
int r;
if ((kq = kqueue()) < 0)
err(1, "kqueue");
if ((r = pthread_create(&pth, NULL, (void *)do_thread, NULL)) != 0)
errc(1, r, "pthread_create");
if ((r = pthread_create(&pth2, NULL, (void *)do_thread2, NULL)) != 0)
errc(1, r, "pthread_create");
timeout.tv_sec = 0;
timeout.tv_nsec = 1;
if ((r = pthread_join(pth, NULL)) != 0)
errc(1, r, "pthread_join");
if ((r = pthread_join(pth2, NULL)) != 0)
errc(1, r, "pthread_join");
return (0);
}
|
