mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-25 10:01:02 +01:00
75 lines
1.6 KiB
Bash
Executable File
75 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
# Test scenario for Bug 261707.
|
|
# Based on Kostik's shm_super.sh
|
|
# "panic: vm_page_free_prep: freeing mapped page ..." seen.
|
|
|
|
# Test scenario suggestion by kib@
|
|
|
|
. ../default.cfg
|
|
|
|
cat > /tmp/shm3.c <<EOF
|
|
#include <sys/param.h>
|
|
#include <sys/mman.h>
|
|
|
|
#include <err.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#define M(x) ((x) * 1024 * 1024)
|
|
#define SZ M(256)
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
off_t cnt;
|
|
void *ptr;
|
|
int error, shmfd;
|
|
char buf[128];
|
|
|
|
shmfd = shm_open(SHM_ANON, O_CREAT | O_RDWR, 0600);
|
|
if (shmfd == -1)
|
|
err(1, "shm_open");
|
|
error = ftruncate(shmfd, SZ);
|
|
if (error == -1)
|
|
err(1, "truncate");
|
|
memset(buf, 0, sizeof(buf));
|
|
for (cnt = 0; cnt < SZ; cnt += sizeof(buf)) {
|
|
error = write(shmfd, buf, sizeof(buf));
|
|
if (error == -1)
|
|
err(1, "write");
|
|
else if (error != sizeof(buf))
|
|
errx(1, "short write %d", (int)error);
|
|
}
|
|
ptr = mmap(NULL, SZ, PROT_READ | PROT_WRITE, MAP_SHARED,
|
|
shmfd, 0);
|
|
if (ptr == MAP_FAILED)
|
|
err(1, "mmap");
|
|
for (cnt = 0; cnt < SZ; cnt += PAGE_SIZE)
|
|
*((char *)ptr + cnt) = 0;
|
|
close(shmfd);
|
|
sleep(30);
|
|
}
|
|
EOF
|
|
mycc -o /tmp/shm3 -Wall -Wextra -O0 -g /tmp/shm3.c || exit 1
|
|
rm /tmp/shm3.c
|
|
|
|
../testcases/swap/swap -t 3m -i 50 > /dev/null &
|
|
sleep 30
|
|
for i in `jot 50`; do
|
|
/tmp/shm3 &
|
|
done
|
|
while pgrep -q shm3; do
|
|
sleep 5
|
|
done
|
|
while pkill swap; do
|
|
sleep .2
|
|
done
|
|
wait
|
|
|
|
rm -f /tmp/shm3
|
|
exit $s
|