xref: /freebsd/tools/test/stress2/misc/nfs15lockd.sh (revision 8a272653)
1#!/bin/sh
2
3#
4# Copyright (c) 2016 Dell EMC Isilon
5# All rights reserved.
6#
7# Redistribution and use in source and binary forms, with or without
8# modification, are permitted provided that the following conditions
9# are met:
10# 1. Redistributions of source code must retain the above copyright
11#    notice, this list of conditions and the following disclaimer.
12# 2. Redistributions in binary form must reproduce the above copyright
13#    notice, this list of conditions and the following disclaimer in the
14#    documentation and/or other materials provided with the distribution.
15#
16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26# SUCH DAMAGE.
27#
28
29# Demonstrate "wrong handling for suspend".
30# https://www.mail-archive.com/freebsd-current@freebsd.org/msg166333.html
31
32# panic: Failed to register NFS lock locally - error=11
33# https://people.freebsd.org/~pho/stress/log/kostik897.txt
34# Fixed in r302013.
35
36[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
37pgrep -q lockd || { echo "lockd not running."; exit 1; }
38
39. ../default.cfg
40
41[ -z "$nfs_export" ] && exit 0
42ping -c 2 `echo $nfs_export | sed 's/:.*//'` > /dev/null 2>&1 ||
43    exit 0
44
45here=`pwd`
46cd /tmp
47sed '1,/^EOF/d' < $here/$0 > nfs15lockd.c
48mycc -o nfs15lockd -Wall -Wextra -O2 -g nfs15lockd.c -lpthread || exit 1
49rm -f nfs15lockd.c
50cd $here
51
52mount | grep "on $mntpoint " | grep nfs > /dev/null && umount $mntpoint
53
54[ $# -ne 0 ] &&
55    # Problem only seen with lockd
56    { echo "Not using lockd"; debug="-o nolockd"; }
57mount -t nfs -o tcp -o retrycnt=3 -o soft -o rw $debug \
58    $nfs_export $mntpoint
59sleep 2
60
61s=0
62lockf -t 10 $mntpoint/$$.lock sleep 2 > /tmp/$$.log 2>&1
63if grep -q "No locks available" /tmp/$$.log; then
64	echo "Is lockd running on the remote host?"
65	rm /tmp/$$.log
66	s=1
67fi
68
69wd=$mntpoint/nfs15lockd-`jot -rc 8 a z | tr -d '\n'`.dir
70rm -rf $wd
71mkdir $wd
72
73echo "Expect: nfs15lockd exited on signal 6 (core dumped)"
74(cd $wd; /tmp/nfs15lockd) &
75start=`date '+%s'`
76while [ $((`date '+%s'` - start)) -lt 600 ]; do
77	pgrep -q nfs15lockd || break
78	sleep 2
79done
80if pgrep -q nfs15lockd; then
81	s=2
82	echo "Thread suspension issue:"
83	ps -lx | grep -v grep | grep nfs15lockd | grep "T+" | \
84		    awk '{print $2}' | while read pid; do
85		ps -lp$pid
86		procstat -k $pid
87		kill -9 $pid
88	done
89	pkill nfs15lockd
90fi
91wait
92rm -rf $wd
93
94n=0
95while mount | grep "on $mntpoint " | grep -q nfs; do
96	umount $mntpoint && break
97	n=$((n + 1))
98	if [ $n -gt 60 ]; then
99		fstat -mf $mntpoint
100		s=3
101		break
102	fi
103	sleep 2
104done 2>&1 | awk '!seen[$0]++'
105mount | grep -q "on $mntpoint " && umount -f $mntpoint
106
107rm -f /tmp/nfs15lockd nfs15lockd.core
108exit $s
109EOF
110#include <sys/stat.h>
111#include <sys/param.h>
112#include <sys/mman.h>
113#include <sys/wait.h>
114
115#include <machine/atomic.h>
116
117#include <err.h>
118#include <errno.h>
119#include <fcntl.h>
120#include <pthread.h>
121#include <signal.h>
122#include <stdio.h>
123#include <stdlib.h>
124#include <string.h>
125#include <unistd.h>
126
127#define PARALLEL 4
128#define RUNTIME 300
129#define SYNC 0
130
131volatile u_int *share;
132
133static void *
134t1(void *data __unused)
135{
136	atomic_add_int(&share[SYNC], 1);
137	usleep(arc4random() % 8000);
138	raise(SIGABRT);
139
140	return (NULL);
141}
142
143static void *
144t2(void *data __unused)
145{
146	int fd, i, r;
147	char file[80];
148
149	for (i = 0; i < 100; i++) {
150		atomic_add_int(&share[SYNC], 1);
151		snprintf(file, sizeof(file), "file.%06d", i);
152		if ((fd = open(file, O_WRONLY | O_CREAT | O_APPEND,
153		    DEFFILEMODE)) == -1)
154			err(1, "open(%s)", file);
155		do {
156			r = lockf(fd, F_LOCK, 0);
157		} while (r == -1 && (errno == EDEADLK || errno == EINTR));
158		if (r == -1)
159			err(1, "lockf(%s, F_LOCK)", file);
160		write(fd, "x", 1);
161		usleep(arc4random() % 1000);
162		if (lseek(fd, 0, SEEK_SET) == -1)
163			err(1, "lseek");
164		if (lockf(fd, F_ULOCK, 0) == -1)
165			err(1, "lockf(%s, F_ULOCK)", file);
166		close(fd);
167	}
168
169	return (NULL);
170}
171
172int
173test(void)
174{
175	pthread_t tid[3];
176	int i, rc;
177
178	for (i = 0; i < 10; i++) {
179		if ((rc = pthread_create(&tid[0], NULL, t2, NULL)) == -1)
180			errc(1, rc, "pthread_create");
181		if ((rc = pthread_create(&tid[1], NULL, t2, NULL)) == -1)
182			errc(1, rc, "pthread_create");
183		if ((rc = pthread_create(&tid[2], NULL, t1, NULL)) == -1)
184			errc(1, rc, "pthread_create");
185
186		if ((rc = pthread_join(tid[0], NULL)) == -1)
187			errc(1, rc, "pthread_join");
188		if ((rc = pthread_join(tid[1], NULL)) == -1)
189			errc(1, rc, "pthread_join");
190		if ((rc = pthread_join(tid[2], NULL)) == -1)
191			errc(1, rc, "pthread_join");
192	}
193
194	_exit(0);
195}
196
197int
198main(void)
199{
200	pid_t pids[PARALLEL];
201	size_t len;
202	time_t start;
203        int i, status;
204
205	len = PAGE_SIZE;
206	if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE,
207	    MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED)
208		err(1, "mmap");
209
210	start = time(NULL);
211	while (time(NULL) - start < RUNTIME) {
212		for (i = 0; i < PARALLEL; i++) {
213			if ((pids[i] = fork()) == 0)
214				test();
215		}
216
217		for(;;) {
218			if (share[SYNC] > 0)
219				atomic_add_int(&share[SYNC], -1);
220			for (i = 0; i < PARALLEL; i++)
221				kill(pids[i], SIGSTOP);
222			usleep(1000);
223			for (i = 0; i < PARALLEL; i++)
224				kill(pids[i], SIGCONT);
225			usleep(100 + arc4random() % 400);
226			if (share[SYNC] == 0) { /* If all procs are done */
227				usleep(500);
228				if (share[SYNC] == 0)
229					break;
230			}
231		}
232
233		for (i = 0; i < PARALLEL; i++) {
234			if (waitpid(pids[i], &status, 0) != pids[i])
235				err(1, "waitpid");
236		}
237	}
238
239	return (0);
240}
241