72 lines
1.8 KiB
Bash
Executable File
72 lines
1.8 KiB
Bash
Executable File
#!/bin/sh
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# Test scenario by: David Cross <dcrosstech@gmail.com>
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# "panic: softdep_deallocate_dependencies: dangling deps" seen.
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# https://people.freebsd.org/~pho/stress/log/mmap29.txt
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# Fixed by: r302567.
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. ../default.cfg
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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[ -z "`which timeout`" ] && exit 0
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mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint
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mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart
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mdconfig -a -t swap -s 2g -u $mdstart || exit 1
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bsdlabel -w md$mdstart auto
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newfs -U md${mdstart}$part > /dev/null
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mount /dev/md${mdstart}$part $mntpoint
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mkdir $mntpoint/mmap29
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cd /tmp
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cat > mmap29.c <<EOFHERE
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#include <sys/param.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <err.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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int
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main(int argc, char **argv)
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{
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int fd;
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unsigned char *memrange;
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if (argc != 2) {
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fprintf(stderr, "Usage: %s <file>\n", argv[0]);
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exit(1);
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}
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unlink(argv[1]);
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if ((fd = open(argv[1], O_RDWR | O_CREAT, DEFFILEMODE)) == -1)
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err(1, "open(%s)", argv[1]);
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lseek(fd, 0xbfff, SEEK_SET);
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write(fd, "\0", 1);
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if ((memrange = mmap(0, 0x2b6000, PROT_READ | PROT_WRITE, MAP_SHARED |
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MAP_HASSEMAPHORE | MAP_NOSYNC, fd, 0)) == MAP_FAILED)
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err(1, "mmap");
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memrange[0] = 5;
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munmap(memrange, 0x2b6000);
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close(fd);
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return (0);
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}
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EOFHERE
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cc -o mmap29 -Wall -Wextra -O0 -g mmap29.c || exit 1
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rm mmap29.c
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./mmap29 $mntpoint/mmap29/mmap291
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old=`sysctl -n kern.maxvnodes`
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trap "sysctl kern.maxvnodes=$old" EXIT INT
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sysctl kern.maxvnodes=2000
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timeout 60 find / -xdev -print >/dev/null
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while mount | grep "on $mntpoint " | grep -q /dev/md; do
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umount $mntpoint || sleep 1
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done
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mdconfig -d -u $mdstart
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rm mmap29
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exit 0
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