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Diffstat (limited to 'tools/test/stress2/misc/mmap45.sh')
| -rwxr-xr-x | tools/test/stress2/misc/mmap45.sh | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/tools/test/stress2/misc/mmap45.sh b/tools/test/stress2/misc/mmap45.sh new file mode 100755 index 000000000000..59450b41bb5e --- /dev/null +++ b/tools/test/stress2/misc/mmap45.sh @@ -0,0 +1,230 @@ +#!/bin/sh + +# +# Copyright (c) 2024 Peter Holm <pho@FreeBSD.org> +# +# SPDX-License-Identifier: BSD-2-Clause +# + +# Demonstrate issue described in: +# [Bug 276002] nfscl: data corruption using both copy_file_range and mmap'd I/O + +# Issue seen: +# +# 8994c8994 +# < 0431020 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f +# --- +# > 0431020 10 11 ee 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f +# 256 -rw------- 1 root wheel 262144 Feb 28 19:44 file +# 256 -rw------- 1 root wheel 262144 Feb 28 19:43 file.orig +# 19:44:34, elapsed 0 days, 00:13.59 +# Failed with exit code 2 after 13 loops. + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 +. ../default.cfg +set -u +prog=$(basename "$0" .sh) +log=/tmp/$prog.log +serial=/tmp/$prog.serial +grep -q $mntpoint /etc/exports || + { echo "$mntpoint missing from /etc/exports"; exit 0; } +rpcinfo 2>/dev/null | grep -q mountd || exit 0 + +cat > /tmp/$prog.c <<EOF +#include <sys/mman.h> +#include <sys/stat.h> + +#include <err.h> +#include <fcntl.h> +#include <pthread.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +static off_t siz; +static pthread_mutex_t write_mutex; +static int fd, go; +static char *cp; + +static void * +memread(void *arg __unused) +{ + int i; + char c; + + while (go == 1) { + i = arc4random() % siz; + c = cp[i]; + if (c != 0x77) /* No unused vars here */ + usleep(arc4random() % 400); + } + return (0); +} + +static void * +memwrite(void *arg __unused) +{ + int i; + char c; + + while (go == 1) { + i = arc4random() % siz; + pthread_mutex_lock(&write_mutex); + c = cp[i]; + cp[i] = 0xee; /* This value seems to linger with NFS */ + cp[i] = c; + pthread_mutex_unlock(&write_mutex); + usleep(arc4random() % 400); + } + return (0); +} + +static void * +wr(void *arg __unused) +{ + off_t pos; + int r, s; + char buf[1024]; + + while (go == 1) { + s = arc4random() % sizeof(buf) + 1; + pos = arc4random() % (siz - s); + pthread_mutex_lock(&write_mutex); + if (lseek(fd, pos, SEEK_SET) == -1) + err(1, "lseek(%d)", (int)pos); + if ((r = read(fd, buf, s)) != s) { + fprintf(stderr, "r = %d, s = %d, pos = %d\n", r, s, (int)pos); + err(1, "read():2"); + } + if (lseek(fd, pos, SEEK_SET) == -1) + err(1, "lseek(%d)", (int)pos); + if (write(fd, buf, s) != s) + err(1, "write()"); + pthread_mutex_unlock(&write_mutex); + usleep(arc4random() % 400); + } + return (0); +} + +static void * +s1(void *arg __unused) +{ + + while (go == 1) { + if (fdatasync(fd) == -1) + err(1, "fdatasync()"); + usleep(arc4random() % 1000); + } + return (0); +} + +static void * +s2(void *arg __unused) +{ + + while (go == 1) { + if (fsync(fd) == -1) + err(1, "fdatasync()"); + usleep(arc4random() % 1000); + } + return (0); +} + +int +main(int argc, char *argv[]) +{ + struct stat st; + pthread_t tp[10]; + int e, i; + + if (argc != 2) { + fprintf(stderr, "Usage: %s <file>\n", argv[0]); + exit(1); + } + if ((fd = open(argv[1], O_RDWR)) == -1) + err(1, "open(%s)", argv[1]); + if (fstat(fd, &st) == -1) + err(1, "stat(%s)", argv[1]); + siz = st.st_size; + cp = mmap(NULL, st.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); + if (cp == MAP_FAILED) + err(1, "mmap()"); + + go = 1; + pthread_mutex_init(&write_mutex, NULL); + if ((e = pthread_create(&tp[0], NULL, memwrite, NULL)) != 0) + errc(1, e, "pthread_create"); + if ((e = pthread_create(&tp[1], NULL, memwrite, NULL)) != 0) + errc(1, e, "pthread_create"); + if ((e = pthread_create(&tp[2], NULL, memread, NULL)) != 0) + errc(1, e, "pthread_create"); + if ((e = pthread_create(&tp[3], NULL, memread, NULL)) != 0) + errc(1, e, "pthread_create"); + if ((e = pthread_create(&tp[4], NULL, wr, NULL)) != 0) + errc(1, e, "pthread_create"); + if ((e = pthread_create(&tp[5], NULL, wr, NULL)) != 0) + errc(1, e, "pthread_create"); + if ((e = pthread_create(&tp[6], NULL, wr, NULL)) != 0) + errc(1, e, "pthread_create"); + if ((e = pthread_create(&tp[7], NULL, wr, NULL)) != 0) + errc(1, e, "pthread_create"); + if ((e = pthread_create(&tp[8], NULL, s1, NULL)) != 0) + errc(1, e, "pthread_create"); + if ((e = pthread_create(&tp[9], NULL, s2, NULL)) != 0) + errc(1, e, "pthread_create"); + + sleep(60); + go = 0; + for (i = 0; i < (int)(sizeof(tp) / sizeof(tp[0])); i++) + pthread_join(tp[i], NULL); + if (munmap(cp, siz) == -1) + err(1, "munmap()"); + close(fd); +} +EOF +mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1 + +mycc -o $serial -Wall -Wextra -O2 ../tools/serial.c || exit 1 +mount | grep -q "on $mntpoint " && umount -f $mntpoint +mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart +mdconfig -s 5g -u $mdstart +newfs -n $newfs_flags /dev/md$mdstart > /dev/null +mount /dev/md$mdstart $mntpoint + +mp2=${mntpoint}2 +mkdir -p $mp2 +mount | grep -q "on $mp2 " && umount -f $mp2 +mount -t nfs -o retrycnt=3 127.0.0.1:$mntpoint $mp2 || exit 1 +sleep .2 + +here=`pwd` +cd $mp2 +$here/../testcases/swap/swap -t 5m -i 20 > /dev/null & +sleep 2 + +size=262144 +$serial file $size +cp file file.orig + +s=0 +/tmp/$prog file || s=1 + +while pgrep -q swap; do pkill swap; done +wait +if ! cmp -s file.orig file; then + od -t x1 file.orig > /var/tmp/$prog.file1 + od -t x1 file > /var/tmp/$prog.file2 + diff /var/tmp/$prog.file1 /var/tmp/$prog.file2 > $log + head -20 $log + rm /var/tmp/$prog.file1 /var/tmp/$prog.file2 + ls -ls file.orig file + s=2 +fi + +cd $here +umount $mp2 +umount $mntpoint +mdconfig -d -u $mdstart +rm -f $serial /tmp/$prog /tmp/$prog.c $log +exit $s |