4 # Copyright (c) 2009 Peter Holm <pho@FreeBSD.org>
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions
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.
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
29 # Variation of mmap2.sh with focus on random arguments for mprotect()
30 # https://people.freebsd.org/~pho/stress/log/kostik209.txt
36 sed '1,/^EOF/d' < $odir/$0 > mmap3.c
37 mycc -o mmap3 -Wall mmap3.c -lpthread || exit 1
41 while [ `date '+%s'` -lt $((start + 5 * 60)) ]; do
44 echo "Expect Segmentation faults"
45 trap "ls /tmp/mmap3* 2>/dev/null | grep -E 'mmap3\.[0-9]{6}\.[0-9]{4}$' | \
48 while [ `date '+%s'` -lt $((start + 5 * 60)) ]; do
51 rm -f /tmp/mmap3 mmap3.core
56 Stress mmap by having max 100 threads mapping random areas within
59 #include <sys/types.h>
67 #include <sys/param.h>
73 #define STARTADDR 0x50000000U
74 #define ADRSPACE 0x06400000U /* 100 Mb */
83 mprotect(p, 0x570e3d38, 0x2c8fd54f);
87 v = v << 32 | arc4random();
89 madvise((void *)v, arc4random(), arc4random());
90 mprotect((void *)v, arc4random(), arc4random());
91 msync((void *)v, arc4random(), arc4random());
104 p = (void *)STARTADDR;
107 sprintf(path, "/tmp/mmap3.%06d.%04d", getpid(), nr);
108 if ((fd = open(path, O_CREAT | O_TRUNC | O_RDWR, 0622)) == -1)
110 if (ftruncate(fd, len) == -1)
112 if ((p = mmap(p, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
118 if (unlink(path) == -1)
119 err(1, "unlink(%s)", path);
123 m = arc4random() % 10;
124 if (madvise(p, len, m) == -1)
125 warn("madvise(%p, %zd, %d)", p, len, m);
126 if (mprotect(p, trunc_page(arc4random() % len), PROT_READ) == -1 )
127 err(1, "mprotect failed with error:");
128 if (msync(p, 0, MS_SYNC) == -1)
129 err(1, "msync(%p)", p);
130 if (munmap(p, len) == -1)
131 err(1, "munmap(%p)", p);
140 for (i = 0; i < 512; i++) {
147 main(int argc, char **argv)
149 pthread_t threads[THREADS];
153 n = arc4random() % 14 + 5;
155 // printf("Address start 0x%x, address end 0x%x, pages %d, n %d\n",
156 // STARTADDR, STARTADDR + ADRSPACE, ADRSPACE>>PAGE_SHIFT, n);
157 for (i = 0; i < n; i++) {
159 if ((r = pthread_create(&threads[i], NULL, thr, (void *)&nr[i])) != 0)
160 errc(1, r, "pthread_create()");
163 for (i = 0; i < n; i++) {
164 if ((r = pthread_join(threads[i], NULL)) != 0)
165 errc(1, r, "pthread_join(%d)", i);