git: 833f9294b468 - main - stress2: Added two syzkaller reproducers. Updated the exclude file
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Date: Sat, 24 Jan 2026 12:31:07 UTC
The branch main has been updated by pho:
URL: https://cgit.FreeBSD.org/src/commit/?id=833f9294b46856dce3028a8ecb65663ed422b629
commit 833f9294b46856dce3028a8ecb65663ed422b629
Author: Peter Holm <pho@FreeBSD.org>
AuthorDate: 2026-01-24 12:28:54 +0000
Commit: Peter Holm <pho@FreeBSD.org>
CommitDate: 2026-01-24 12:28:54 +0000
stress2: Added two syzkaller reproducers. Updated the exclude file
---
tools/test/stress2/misc/all.exclude | 4 +
tools/test/stress2/misc/syzkaller88.sh | 317 +++++++++++++++++++++++++++++++++
tools/test/stress2/misc/syzkaller89.sh | 210 ++++++++++++++++++++++
3 files changed, 531 insertions(+)
diff --git a/tools/test/stress2/misc/all.exclude b/tools/test/stress2/misc/all.exclude
index 9851496f8839..a802f7c21cb1 100644
--- a/tools/test/stress2/misc/all.exclude
+++ b/tools/test/stress2/misc/all.exclude
@@ -28,6 +28,9 @@ gnop9.sh Waiting for patch commit 20201214
graid1_3.sh Hang seen 20250915
graid1_8.sh Known issue 20170909
graid1_9.sh panic: Bad effnlink 20180212
+gunion.sh CAM stuk in vmwait 20251226
+ifconfig.sh https://people.freebsd.org/~pho/stress/log/log0626.txt 20251217
+ifconfig2.sh Hang in ifnet_de, vlan_sx and sbwait 20250114
lockf5.sh Spinning threads seen 20160718
maxvnodes2.sh https://people.freebsd.org/~pho/stress/log/log0083.txt 20210329
memguard.sh https://people.freebsd.org/~pho/stress/log/log0088.txt 20210402
@@ -71,6 +74,7 @@ syzkaller59.sh Page fault 20220625
syzkaller80.sh panic 20250711
syzkaller82.sh panic: m_apply, length > size of mbuf chain 20250724
syzkaller85.sh panic: Assertion uio->uio_resid < 0 failed 20250928
+syzkaller89.sh panic: MNT_DEFERRED requires MNT_RECURSE | MNT_FORCE 20241224
quota3.sh https://people.freebsd.org/~pho/stress/log/log0604.txt 20250728
quota6.sh https://people.freebsd.org/~pho/stress/log/log0456.txt 20240707
truss3.sh WiP 20200915
diff --git a/tools/test/stress2/misc/syzkaller88.sh b/tools/test/stress2/misc/syzkaller88.sh
new file mode 100755
index 000000000000..b2225a37a27f
--- /dev/null
+++ b/tools/test/stress2/misc/syzkaller88.sh
@@ -0,0 +1,317 @@
+#!/bin/sh
+
+# panic: proc_dtor: non-empty p_ktr
+# cpuid = 1
+# time = 1768834000
+# KDB: stack backtrace:
+# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0167884910
+# vpanic() at vpanic+0x136/frame 0xfffffe0167884a40
+# panic() at panic+0x43/frame 0xfffffe0167884aa0
+# proc_dtor() at proc_dtor+0x2cb/frame 0xfffffe0167884ae0
+# uma_zfree_arg() at uma_zfree_arg+0xaa/frame 0xfffffe0167884b30
+# proc_reap() at proc_reap+0x5b0/frame 0xfffffe0167884b70
+# proc_to_reap() at proc_to_reap+0x3be/frame 0xfffffe0167884bc0
+# kern_wait6() at kern_wait6+0x1ab/frame 0xfffffe0167884c60
+# sys_wait6() at sys_wait6+0x9f/frame 0xfffffe0167884e00
+# amd64_syscall() at amd64_syscall+0x169/frame 0xfffffe0167884f30
+# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0167884f30
+# --- syscall (532, FreeBSD ELF64, wait6), rip = 0x3228e1de521a, rsp = 0x3228e0f6e308, rbp = 0x3228e0f6e350 ---
+# KDB: enter: panic
+# [ thread pid 67906 tid 768579 ]
+# Stopped at kdb_enter+0x33: movq $0,0x11e6bc2(%rip)
+# db> x/s version
+# version: FreeBSD 16.0-CURRENT #0 main-n283239-11f954b021a1-dirty: Sun Jan 18 21:26:45 CET 2026
+# pho@mercat1.netperf.freebsd.org:/usr/src/sys/amd64/compile/PHO
+# db>
+
+# Fixed by: 6bb3f208617b - main - ktrace: do not enqueue request if the process' ktrioparams are freed
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+set -u
+prog=$(basename "$0" .sh)
+cat > /tmp/$prog.c <<EOF
+// https://syzkaller.appspot.com/bug?id=2212d848f78d472dfeaec7a3cc9f5a31e2a44f42
+// autogenerated by syzkaller (https://github.com/google/syzkaller)
+// Reported-by: syzbot+25dabe4046a645a0566c@syzkaller.appspotmail.com
+
+#define _GNU_SOURCE
+
+#include <sys/types.h>
+
+#include <pwd.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/endian.h>
+#include <sys/syscall.h>
+#include <sys/wait.h>
+#include <time.h>
+#include <unistd.h>
+
+static unsigned long long procid;
+
+static void kill_and_wait(int pid, int* status)
+{
+ kill(pid, SIGKILL);
+ while (waitpid(-1, status, 0) != pid) {
+ }
+}
+
+static void sleep_ms(uint64_t ms)
+{
+ usleep(ms * 1000);
+}
+
+static uint64_t current_time_ms(void)
+{
+ struct timespec ts;
+ if (clock_gettime(CLOCK_MONOTONIC, &ts))
+ exit(1);
+ return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
+}
+
+static void execute_one(void);
+
+#define WAIT_FLAGS 0
+
+static void loop(void)
+{
+ alarm(240); /* Added by pho */
+ for (;;) {
+ int pid = fork();
+ if (pid < 0)
+ exit(1);
+ if (pid == 0) {
+ execute_one();
+ exit(0);
+ }
+ int status = 0;
+ uint64_t start = current_time_ms();
+ for (;;) {
+ sleep_ms(10);
+ if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
+ break;
+ if (current_time_ms() - start < 5000)
+ continue;
+ kill_and_wait(pid, &status);
+ break;
+ }
+ }
+}
+
+uint64_t r[3] = {0xffffffffffffffff, 0x0, 0xffffffffffffffff};
+
+void execute_one(void)
+{
+ intptr_t res = 0;
+ if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
+ }
+ // open\$dir arguments: [
+ // file: ptr[in, buffer] {
+ // buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
+ // }
+ // flags: open_flags = 0x200 (8 bytes)
+ // mode: open_mode = 0x19c (8 bytes)
+ // ]
+ // returns fd_dir
+ memcpy((void*)0x200000000040, "./file0\000", 8);
+ syscall(SYS_open, /*file=*/0x200000000040ul, /*flags=O_CREAT*/ 0x200ul,
+ /*mode=S_IROTH|S_IXGRP|S_IWGRP|S_IWUSR|S_IRUSR*/ 0x19cul);
+ // setreuid arguments: [
+ // ruid: uid (resource)
+ // euid: uid (resource)
+ // ]
+ syscall(SYS_setreuid, /*ruid=*/0xee00, /*euid=*/0);
+ // chown arguments: [
+ // file: nil
+ // uid: uid (resource)
+ // gid: gid (resource)
+ // ]
+ syscall(SYS_chown, /*file=*/0ul, /*uid=*/0, /*gid=*/0);
+ // kqueue arguments: [
+ // ]
+ // returns kqueue
+ res = syscall(SYS_kqueue);
+ if (res != -1)
+ r[0] = res;
+ // kevent arguments: [
+ // kqueue: kqueue (resource)
+ // changelist: ptr[in, array[kevent]] {
+ // array[kevent] {
+ // kevent {
+ // ident: intptr = 0x0 (8 bytes)
+ // filter: filters = 0xfffffffffffffff9 (2 bytes)
+ // flags: evflags = 0x8009 (2 bytes)
+ // fflags: fflags = 0x8 (4 bytes)
+ // data: int64 = 0xe8c5 (8 bytes)
+ // udata: intptr = 0x0 (8 bytes)
+ // ext: array[int64] {
+ // int64 = 0x7ffffffffc (8 bytes)
+ // int64 = 0xfffffffffffffffc (8 bytes)
+ // int64 = 0x7 (8 bytes)
+ // int64 = 0x40000000000000 (8 bytes)
+ // }
+ // }
+ // }
+ // }
+ // nchanges: len = 0x1 (8 bytes)
+ // eventlist: nil
+ // nevents: len = 0x0 (8 bytes)
+ // timeout: nil
+ // ]
+ *(uint64_t*)0x200000000040 = 0;
+ *(uint16_t*)0x200000000048 = 0xfff9;
+ *(uint16_t*)0x20000000004a = 0x8009;
+ *(uint32_t*)0x20000000004c = 8;
+ *(uint64_t*)0x200000000050 = 0xe8c5;
+ *(uint64_t*)0x200000000058 = 0;
+ *(uint64_t*)0x200000000060 = 0x7ffffffffc;
+ *(uint64_t*)0x200000000068 = 0xfffffffffffffffc;
+ *(uint64_t*)0x200000000070 = 7;
+ *(uint64_t*)0x200000000078 = 0x40000000000000;
+ syscall(SYS_kevent, /*kqueue=*/r[0], /*changelist=*/0x200000000040ul,
+ /*nchanges=*/1ul, /*eventlist=*/0ul, /*nevents=*/0ul,
+ /*timeout=*/0ul);
+ // extattr_delete_fd arguments: [
+ // fd: fd (resource)
+ // attrnamespace: attrnamespace_flags = 0x0 (8 bytes)
+ // attrname: ptr[in, buffer] {
+ // buffer: {27 17 2e 29 23 00} (length 0x6)
+ // }
+ // ]
+ memcpy((void*)0x2000000001c0, "\'\027.)#\000", 6);
+ syscall(SYS_extattr_delete_fd, /*fd=*/r[0], /*attrnamespace=*/0ul,
+ /*attrname=*/0x2000000001c0ul);
+ // freebsd11_mknod arguments: [
+ // file: ptr[in, buffer] {
+ // buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
+ // }
+ // mod: mknod_mode = 0x1000 (8 bytes)
+ // dev: int32 = 0x0 (4 bytes)
+ // ]
+ memcpy((void*)0x2000000000c0, "./file0\000", 8);
+ syscall(SYS_freebsd11_mknod, /*file=*/0x2000000000c0ul,
+ /*mod=S_IFIFO*/ 0x1000ul, /*dev=*/0);
+ // freebsd10_pipe arguments: [
+ // pipefd: nil
+ // ]
+ syscall(SYS_freebsd10_pipe, /*pipefd=*/0ul);
+ // ksem_init arguments: [
+ // idp: ptr[out, semid] {
+ // semid (resource)
+ // }
+ // value: int32 = 0x0 (4 bytes)
+ // ]
+ res = syscall(SYS_ksem_init, /*idp=*/0x200000000100ul, /*value=*/0);
+ if (res != -1)
+ r[1] = *(uint64_t*)0x200000000100;
+ // ksem_post arguments: [
+ // id: semid (resource)
+ // ]
+ syscall(SYS_ksem_post, /*id=*/r[1]);
+ // openat\$bpf arguments: [
+ // fd: const = 0xffffffffffffff9c (8 bytes)
+ // file: ptr[in, buffer] {
+ // buffer: {2f 64 65 76 2f 62 70 66 00} (length 0x9)
+ // }
+ // flags: open_flags = 0x40 (8 bytes)
+ // mode: const = 0x0 (8 bytes)
+ // ]
+ // returns fd_bpf
+ memcpy((void*)0x200000000040, "/dev/bpf\000", 9);
+ syscall(SYS_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x200000000040ul,
+ /*flags=FASYNC*/ 0x40ul, /*mode=*/0ul);
+ // kqueue arguments: [
+ // ]
+ // returns kqueue
+ res = syscall(SYS_kqueue);
+ if (res != -1)
+ r[2] = res;
+ // kevent arguments: [
+ // kqueue: kqueue (resource)
+ // changelist: nil
+ // nchanges: len = 0x0 (8 bytes)
+ // eventlist: nil
+ // nevents: len = 0x0 (8 bytes)
+ // timeout: nil
+ // ]
+ syscall(SYS_kevent, /*kqueue=*/r[2], /*changelist=*/0ul, /*nchanges=*/0ul,
+ /*eventlist=*/0ul, /*nevents=*/0ul, /*timeout=*/0ul);
+ // ktrace arguments: [
+ // path: ptr[in, buffer] {
+ // buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
+ // }
+ // ops: ktrace_ops = 0x4 (8 bytes)
+ // trpoints: ktrace_trpoints = 0x94659db2cce5c9d8 (8 bytes)
+ // pid: pid (resource)
+ // ]
+ memcpy((void*)0x2000000000c0, "./file0\000", 8);
+ syscall(
+ SYS_ktrace, /*path=*/0x2000000000c0ul, /*ops=KTRFLAG_DESCEND*/ 4ul,
+ /*trpoints=KTRFAC_INHERIT|KTRFAC_FAULTEND|KTRFAC_PROCDTOR|KTRFAC_STRUCT|KTRFAC_USER|KTRFAC_CSW|KTRFAC_GENIO|0x94659db28ce58008*/
+ 0x94659db2cce5c9d8ul, /*pid=*/0);
+ // rfork arguments: [
+ // flags: rfork_flags = 0x96014 (8 bytes)
+ // ]
+ syscall(SYS_rfork,
+ /*flags=RFLINUXTHPN|RFTSIGZMB|RFSIGSHARE|RFTHREAD|RFFDG|RFPROC*/
+ 0x96014ul);
+ // ktrace arguments: [
+ // path: ptr[in, buffer] {
+ // buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
+ // }
+ // ops: ktrace_ops = 0x2 (8 bytes)
+ // trpoints: ktrace_trpoints = 0x180 (8 bytes)
+ // pid: pid (resource)
+ // ]
+ memcpy((void*)0x200000000000, "./file0\000", 8);
+ syscall(SYS_ktrace, /*path=*/0x200000000000ul, /*ops=KTROP_CLEARFILE*/ 2ul,
+ /*trpoints=KTRFAC_STRUCT|KTRFAC_USER*/ 0x180ul, /*pid=*/0);
+}
+int main(void)
+{
+ syscall(SYS_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
+ /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
+ /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x1012ul,
+ /*fd=*/(intptr_t)-1, /*offset=*/0ul);
+ const char* reason;
+ (void)reason;
+ for (procid = 0; procid < 4; procid++) {
+ if (fork() == 0) {
+ loop();
+ }
+ }
+ sleep(1000000);
+ return 0;
+}
+EOF
+mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1
+
+(cd ../testcases/swap; ./swap -t 3m -i 30 -l 100 > /dev/null 2>&1) &
+sleep 5
+
+kldstat | grep -q sem && loaded=0 || { kldload sem.ko && loaded=1; }
+work=/tmp/$prog.dir
+rm -rf $work
+mkdir $work
+cd /tmp/$prog.dir
+for i in `jot 30`; do
+ (
+ mkdir d$i
+ cd d$i
+ timeout 3m /tmp/$prog > /dev/null 2>&1 &
+ )
+done
+while pgrep -q $prog; do sleep 2; done
+while pkill swap; do :; done
+wait
+
+rm -rf /tmp/$prog /tmp/$prog.c /tmp/$prog.core $work
+[ $loaded -eq 1 ] && kldunload sem.ko
+exit 0
diff --git a/tools/test/stress2/misc/syzkaller89.sh b/tools/test/stress2/misc/syzkaller89.sh
new file mode 100755
index 000000000000..ea7325560d01
--- /dev/null
+++ b/tools/test/stress2/misc/syzkaller89.sh
@@ -0,0 +1,210 @@
+#!/bin/sh
+
+# panic: MNT_DEFERRED requires MNT_RECURSE | MNT_FORCE
+# cpuid = 6
+# time = 1766415391
+# KDB: stack backtrace:
+# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe01003ffaf0
+# vpanic() at vpanic+0x136/frame 0xfffffe01003ffc20
+# panic() at panic+0x43/frame 0xfffffe01003ffc80
+# dounmount() at dounmount+0xa49/frame 0xfffffe01003ffcf0
+# kern_unmount() at kern_unmount+0x30c/frame 0xfffffe01003ffe00
+# amd64_syscall() at amd64_syscall+0x169/frame 0xfffffe01003fff30
+# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe01003fff30
+# --- syscall (0, FreeBSD ELF64, syscall), rip = 0x8227c1c1a, rsp = 0x8204589e8, rbp = 0x820458a50 ---
+# KDB: enter: panic
+# [ thread pid 67901 tid 1052310 ]
+# Stopped at kdb_enter+0x33: movq $0,0x12132c2(%rip)
+# db> x/s version
+# version:FreeBSD 16.0-CURRENT #1 vmfqe-n282663-949b0dac6c83: Sun Dec 21 12:59:23 CET 2025
+# pho@mercat1.netperf.freebsd.org:/var/tmp/deviant3/sys/amd64/compile/PHO\
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+set -u
+prog=$(basename "$0" .sh)
+cat > /tmp/$prog.c <<EOF
+// https://syzkaller.appspot.com/bug?id=e5807bfa71ca13538ae5c94e160b0c959a40750d
+// autogenerated by syzkaller (https://github.com/google/syzkaller)
+// syzbot+1967136cd02c22bc6f0d@syzkaller.appspotmail.com
+
+#define _GNU_SOURCE
+
+#include <pwd.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/endian.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+static __thread int clone_ongoing;
+static __thread int skip_segv;
+static __thread jmp_buf segv_env;
+
+static void segv_handler(int sig, siginfo_t* info, void* ctx __unused)
+{
+ if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) {
+ exit(sig);
+ }
+ uintptr_t addr = (uintptr_t)info->si_addr;
+ const uintptr_t prog_start = 1 << 20;
+ const uintptr_t prog_end = 100 << 20;
+ int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0;
+ int valid = addr < prog_start || addr > prog_end;
+ if (sig == SIGBUS)
+ valid = 1;
+ if (skip && valid) {
+ _longjmp(segv_env, 1);
+ }
+ exit(sig);
+}
+
+static void install_segv_handler(void)
+{
+ struct sigaction sa;
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_sigaction = segv_handler;
+ sa.sa_flags = SA_NODEFER | SA_SIGINFO;
+ sigaction(SIGSEGV, &sa, NULL);
+ sigaction(SIGBUS, &sa, NULL);
+}
+
+#define NONFAILING(...) \
+ ({ \
+ int ok = 1; \
+ __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST); \
+ if (_setjmp(segv_env) == 0) { \
+ __VA_ARGS__; \
+ } else \
+ ok = 0; \
+ __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST); \
+ ok; \
+ })
+
+uint64_t r[1] = {0xffffffffffffffff};
+
+int main(void)
+{
+ syscall(SYS_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
+ /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
+ /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x1012ul,
+ /*fd=*/(intptr_t)-1, /*offset=*/0ul);
+ const char* reason;
+ (void)reason;
+ install_segv_handler();
+ intptr_t res = 0;
+ if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
+ }
+ // openat\$crypto arguments: [
+ // fd: const = 0xffffffffffffff9c (8 bytes)
+ // file: ptr[in, buffer] {
+ // buffer: {2f 64 65 76 2f 63 72 79 70 74 6f 00} (length 0xc)
+ // }
+ // flags: open_flags = 0x200 (8 bytes)
+ // mode: const = 0x0 (8 bytes)
+ // ]
+ // returns fd_crypto
+ NONFAILING(memcpy((void*)0x200000000040, "/dev/crypto\000", 12));
+ res = syscall(SYS_openat, /*fd=*/0xffffffffffffff9cul,
+ /*file=*/0x200000000040ul, /*flags=O_CREAT*/ 0x200ul,
+ /*mode=*/0ul);
+ if (res != -1)
+ r[0] = res;
+ // freebsd11_fstatfs arguments: [
+ // fd: fd (resource)
+ // buf: ptr[out, freebsd11_statfs] {
+ // freebsd11_statfs {
+ // version: int32 = 0x0 (4 bytes)
+ // type: int32 = 0x0 (4 bytes)
+ // flags: mount_flags = 0x0 (8 bytes)
+ // bsize: int64 = 0x0 (8 bytes)
+ // iosize: int64 = 0x0 (8 bytes)
+ // blocks: int64 = 0x0 (8 bytes)
+ // bfree: int64 = 0x0 (8 bytes)
+ // bavail: int64 = 0x0 (8 bytes)
+ // files: int64 = 0x0 (8 bytes)
+ // ffree: int64 = 0x0 (8 bytes)
+ // syncwrites: int64 = 0x0 (8 bytes)
+ // asyncwrites: int64 = 0x0 (8 bytes)
+ // syncreads: int64 = 0x0 (8 bytes)
+ // asyncreads: int64 = 0x0 (8 bytes)
+ // spare: array[int64] {
+ // int64 = 0x0 (8 bytes)
+ // int64 = 0x0 (8 bytes)
+ // int64 = 0x0 (8 bytes)
+ // int64 = 0x0 (8 bytes)
+ // int64 = 0x0 (8 bytes)
+ // int64 = 0x0 (8 bytes)
+ // int64 = 0x0 (8 bytes)
+ // int64 = 0x0 (8 bytes)
+ // int64 = 0x0 (8 bytes)
+ // int64 = 0x0 (8 bytes)
+ // }
+ // namemax: int32 = 0x0 (4 bytes)
+ // owner: uid (resource)
+ // fsid: fsid {
+ // val: array[int32] {
+ // int32 = 0x0 (4 bytes)
+ // int32 = 0x0 (4 bytes)
+ // }
+ // }
+ // cspare: buffer: (DirOut)
+ // fstype: buffer: (DirOut)
+ // mnton: buffer: (DirOut)
+ // mntfrom: buffer: (DirOut)
+ // }
+ // }
+ // ]
+ syscall(SYS_freebsd11_fstatfs, /*fd=*/r[0], /*buf=*/0x200000000080ul);
+ // mprotect arguments: [
+ // addr: VMA[0x4000]
+ // len: len = 0x4000 (8 bytes)
+ // prot: mmap_prot = 0x1 (8 bytes)
+ // ]
+ syscall(SYS_mprotect, /*addr=*/0x200000000000ul, /*len=*/0x4000ul,
+ /*prot=PROT_READ*/ 1ul);
+ // unmount arguments: [
+ // path: ptr[in, buffer] {
+ // buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
+ // }
+ // flags: mount_flags = 0xc40006c8 (8 bytes)
+ // ]
+ NONFAILING(memcpy((void*)0x200000000200, "./file1\000", 8));
+ syscall(
+ SYS_unmount, /*path=*/0x200000000200ul,
+ /*flags=MNT_EXPORTANON|MNT_DEFEXPORTED|MNT_EXRDONLY|MNT_MULTILABEL|MNT_NOCLUSTERW|MNT_NOCLUSTERR|MNT_ASYNC|0x8*/
+ 0xc40006c8ul);
+ return 0;
+}
+EOF
+mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1
+
+(cd ../testcases/swap; ./swap -t 3m -i 30 -l 100 > /dev/null 2>&1) &
+sleep 5
+
+kldstat | grep -q cryptodev && loaded=0 || { kldload cryptodev.ko && loaded=1; }
+work=/tmp/$prog.dir
+rm -rf $work
+mkdir $work
+cd /tmp/$prog.dir
+for i in `jot 30`; do
+ (
+ mkdir d$i
+ cd d$i
+ timeout 3m /tmp/$prog > /dev/null 2>&1 &
+ )
+done
+while pgrep -q $prog; do sleep 2; done
+while pkill swap; do :; done
+wait
+
+rm -rf /tmp/$prog /tmp/$prog.c /tmp/$prog.core $work
+[ $loaded -eq 1 ] && kldunload cryptodev.ko
+exit 0