git: 736e2ab5ef3c - main - stress2: Added two syzkaller reproducers
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Date: Fri, 25 Apr 2025 07:53:05 UTC
The branch main has been updated by pho:
URL: https://cgit.FreeBSD.org/src/commit/?id=736e2ab5ef3c84dc9c08351822ff2d8473ae5330
commit 736e2ab5ef3c84dc9c08351822ff2d8473ae5330
Author: Peter Holm <pho@FreeBSD.org>
AuthorDate: 2025-04-25 07:52:30 +0000
Commit: Peter Holm <pho@FreeBSD.org>
CommitDate: 2025-04-25 07:52:30 +0000
stress2: Added two syzkaller reproducers
---
tools/test/stress2/misc/syzkaller74.sh | 469 +++++++++++++++++++++++++++++++++
tools/test/stress2/misc/syzkaller75.sh | 377 ++++++++++++++++++++++++++
2 files changed, 846 insertions(+)
diff --git a/tools/test/stress2/misc/syzkaller74.sh b/tools/test/stress2/misc/syzkaller74.sh
new file mode 100755
index 000000000000..886c6047585b
--- /dev/null
+++ b/tools/test/stress2/misc/syzkaller74.sh
@@ -0,0 +1,469 @@
+#!/bin/sh
+
+# panic: _pctrie_lookup_node: freed node in iter path
+# cpuid = 0
+# time = 1745029155
+# KDB: stack backtrace:
+# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe01085d2a30
+# vpanic() at vpanic+0x136/frame 0xfffffe01085d2b60
+# panic() at panic+0x43/frame 0xfffffe01085d2bc0
+# pctrie_iter_lookup_ge() at pctrie_iter_lookup_ge+0x166/frame 0xfffffe01085d2bd0
+# vm_object_page_clean() at vm_object_page_clean+0x22e/frame 0xfffffe01085d2c50
+# vnode_pager_clean_async() at vnode_pager_clean_async+0x48/frame 0xfffffe01085d2c70
+# vinactivef() at vinactivef+0x75/frame 0xfffffe01085d2cb0
+# vput_final() at vput_final+0x29c/frame 0xfffffe01085d2d00
+# vm_map_process_deferred() at vm_map_process_deferred+0xa9/frame 0xfffffe01085d2d20
+# vm_map_remove() at vm_map_remove+0xcb/frame 0xfffffe01085d2d50
+# vmspace_exit() at vmspace_exit+0xa8/frame 0xfffffe01085d2d80
+# exit1() at exit1+0x533/frame 0xfffffe01085d2df0
+# sys_exit() at sys_exit+0xd/frame 0xfffffe01085d2e00
+# amd64_syscall() at amd64_syscall+0x15a/frame 0xfffffe01085d2f30
+# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe01085d2f30
+# --- syscall (1, FreeBSD ELF64, exit), rip = 0x822a9b7fa, rsp = 0x8202b4de8, rbp = 0x8202b4e00 ---
+# KDB: enter: panic
+# [ thread pid 21141 tid 100328 ]
+# Stopped at kdb_enter+0x33: movq $0,0x104d862(%rip)
+# db>
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+set -u
+prog=$(basename "$0" .sh)
+cat > /tmp/$prog.c <<EOF
+// https://syzkaller.appspot.com/bug?id=8658267170f7f61f4317bb04c1fe9add379ffaf4
+// autogenerated by syzkaller (https://github.com/google/syzkaller)
+// syzbot+b5f9ebf4c2c63a5db681@syzkaller.appspotmail.com
+
+#define _GNU_SOURCE
+
+#include <sys/types.h>
+
+#include <dirent.h>
+#include <errno.h>
+#include <pthread.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/resource.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <sys/wait.h>
+#include <time.h>
+#include <unistd.h>
+
+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 use_temporary_dir(void)
+{
+ char tmpdir_template[] = "./syzkaller.XXXXXX";
+ char* tmpdir = mkdtemp(tmpdir_template);
+ if (!tmpdir)
+ exit(1);
+ if (chmod(tmpdir, 0777))
+ exit(1);
+ if (chdir(tmpdir))
+ exit(1);
+}
+
+static void reset_flags(const char* filename)
+{
+ struct stat st;
+ if (lstat(filename, &st))
+ exit(1);
+ st.st_flags &= ~(SF_NOUNLINK | UF_NOUNLINK | SF_IMMUTABLE | UF_IMMUTABLE |
+ SF_APPEND | UF_APPEND);
+ if (lchflags(filename, st.st_flags))
+ exit(1);
+}
+static void __attribute__((noinline)) remove_dir(const char* dir)
+{
+ DIR* dp = opendir(dir);
+ if (dp == NULL) {
+ if (errno == EACCES) {
+ if (rmdir(dir))
+ exit(1);
+ return;
+ }
+ exit(1);
+ }
+ struct dirent* ep = 0;
+ while ((ep = readdir(dp))) {
+ if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
+ continue;
+ char filename[FILENAME_MAX];
+ snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
+ struct stat st;
+ if (lstat(filename, &st))
+ exit(1);
+ if (S_ISDIR(st.st_mode)) {
+ remove_dir(filename);
+ continue;
+ }
+ if (unlink(filename)) {
+ if (errno == EPERM) {
+ reset_flags(filename);
+ reset_flags(dir);
+ if (unlink(filename) == 0)
+ continue;
+ }
+ exit(1);
+ }
+ }
+ closedir(dp);
+ while (rmdir(dir)) {
+ if (errno == EPERM) {
+ reset_flags(dir);
+ if (rmdir(dir) == 0)
+ break;
+ }
+ exit(1);
+ }
+}
+
+static void thread_start(void* (*fn)(void*), void* arg)
+{
+ pthread_t th;
+ pthread_attr_t attr;
+ pthread_attr_init(&attr);
+ pthread_attr_setstacksize(&attr, 128 << 10);
+ int i = 0;
+ for (; i < 100; i++) {
+ if (pthread_create(&th, &attr, fn, arg) == 0) {
+ pthread_attr_destroy(&attr);
+ return;
+ }
+ if (errno == EAGAIN) {
+ usleep(50);
+ continue;
+ }
+ break;
+ }
+ exit(1);
+}
+
+typedef struct {
+ pthread_mutex_t mu;
+ pthread_cond_t cv;
+ int state;
+} event_t;
+
+static void event_init(event_t* ev)
+{
+ if (pthread_mutex_init(&ev->mu, 0))
+ exit(1);
+ if (pthread_cond_init(&ev->cv, 0))
+ exit(1);
+ ev->state = 0;
+}
+
+static void event_reset(event_t* ev)
+{
+ ev->state = 0;
+}
+
+static void event_set(event_t* ev)
+{
+ pthread_mutex_lock(&ev->mu);
+ if (ev->state)
+ exit(1);
+ ev->state = 1;
+ pthread_mutex_unlock(&ev->mu);
+ pthread_cond_broadcast(&ev->cv);
+}
+
+static void event_wait(event_t* ev)
+{
+ pthread_mutex_lock(&ev->mu);
+ while (!ev->state)
+ pthread_cond_wait(&ev->cv, &ev->mu);
+ pthread_mutex_unlock(&ev->mu);
+}
+
+static int event_isset(event_t* ev)
+{
+ pthread_mutex_lock(&ev->mu);
+ int res = ev->state;
+ pthread_mutex_unlock(&ev->mu);
+ return res;
+}
+
+static int event_timedwait(event_t* ev, uint64_t timeout)
+{
+ uint64_t start = current_time_ms();
+ uint64_t now = start;
+ pthread_mutex_lock(&ev->mu);
+ for (;;) {
+ if (ev->state)
+ break;
+ uint64_t remain = timeout - (now - start);
+ struct timespec ts;
+ ts.tv_sec = remain / 1000;
+ ts.tv_nsec = (remain % 1000) * 1000 * 1000;
+ pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
+ now = current_time_ms();
+ if (now - start > timeout)
+ break;
+ }
+ int res = ev->state;
+ pthread_mutex_unlock(&ev->mu);
+ return res;
+}
+
+static void sandbox_common()
+{
+ struct rlimit rlim;
+ rlim.rlim_cur = rlim.rlim_max = 128 << 20;
+ setrlimit(RLIMIT_AS, &rlim);
+ rlim.rlim_cur = rlim.rlim_max = 8 << 20;
+ setrlimit(RLIMIT_MEMLOCK, &rlim);
+ rlim.rlim_cur = rlim.rlim_max = 1 << 20;
+ setrlimit(RLIMIT_FSIZE, &rlim);
+ rlim.rlim_cur = rlim.rlim_max = 1 << 20;
+ setrlimit(RLIMIT_STACK, &rlim);
+ rlim.rlim_cur = rlim.rlim_max = 0;
+ setrlimit(RLIMIT_CORE, &rlim);
+ rlim.rlim_cur = rlim.rlim_max = 256;
+ setrlimit(RLIMIT_NOFILE, &rlim);
+}
+
+static void loop();
+
+static int do_sandbox_none(void)
+{
+ sandbox_common();
+ loop();
+ return 0;
+}
+
+struct thread_t {
+ int created, call;
+ event_t ready, done;
+};
+
+static struct thread_t threads[16];
+static void execute_call(int call);
+static int running;
+
+static void* thr(void* arg)
+{
+ struct thread_t* th = (struct thread_t*)arg;
+ for (;;) {
+ event_wait(&th->ready);
+ event_reset(&th->ready);
+ execute_call(th->call);
+ __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
+ event_set(&th->done);
+ }
+ return 0;
+}
+
+static void execute_one(void)
+{
+ if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
+ }
+ int i, call, thread;
+ for (call = 0; call < 12; call++) {
+ for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
+ thread++) {
+ struct thread_t* th = &threads[thread];
+ if (!th->created) {
+ th->created = 1;
+ event_init(&th->ready);
+ event_init(&th->done);
+ event_set(&th->done);
+ thread_start(thr, th);
+ }
+ if (!event_isset(&th->done))
+ continue;
+ event_reset(&th->done);
+ th->call = call;
+ __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
+ event_set(&th->ready);
+ event_timedwait(&th->done, 50);
+ break;
+ }
+ }
+ for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
+ sleep_ms(1);
+}
+
+static void execute_one(void);
+
+#define WAIT_FLAGS 0
+
+static void loop(void)
+{
+ int iter = 0;
+ for (;; iter++) {
+ char cwdbuf[32];
+ sprintf(cwdbuf, "./%d", iter);
+ if (mkdir(cwdbuf, 0777))
+ exit(1);
+ int pid = fork();
+ if (pid < 0)
+ exit(1);
+ if (pid == 0) {
+ if (chdir(cwdbuf))
+ exit(1);
+ 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;
+ }
+ remove_dir(cwdbuf);
+ }
+}
+
+uint64_t r[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
+ 0xffffffffffffffff, 0xffffffffffffffff};
+
+void execute_call(int call)
+{
+ intptr_t res = 0;
+ switch (call) {
+ case 0:
+ memcpy((void*)0x200000000000, "./file0\000", 8);
+ res = syscall(SYS_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000000ul,
+ /*flags=O_VERIFY|O_CREAT|O_WRONLY*/ 0x200201ul, /*mode=*/0ul);
+ if (res != -1)
+ r[0] = res;
+ break;
+ case 1:
+ *(uint32_t*)0x200000000240 = r[0];
+ *(uint64_t*)0x200000000248 = 0x80000001;
+ *(uint64_t*)0x200000000250 = 0x2000000004c0;
+ memcpy((void*)0x2000000004c0, "\x45\x09\xee\x8f\xcd", 5);
+ *(uint64_t*)0x200000000258 = 5;
+ *(uint32_t*)0x200000000260 = 3;
+ *(uint32_t*)0x200000000264 = 0;
+ *(uint64_t*)0x200000000268 = 0x200000000000000;
+ *(uint32_t*)0x200000000270 = 8;
+ *(uint32_t*)0x200000000274 = 0;
+ *(uint64_t*)0x200000000278 = 1;
+ *(uint64_t*)0x200000000280 = 7;
+ *(uint64_t*)0x200000000288 = 0;
+ *(uint32_t*)0x200000000290 = 0;
+ *(uint32_t*)0x200000000294 = 0x20000005;
+ *(uint32_t*)0x200000000298 = 0x2e5562f1;
+ *(uint16_t*)0x2000000002a0 = 0xc088;
+ syscall(SYS_aio_write, /*iocb=*/0x200000000240ul);
+ break;
+ case 2:
+ memcpy((void*)0x200000000480, "./file0\000", 8);
+ res = syscall(SYS_open, /*file=*/0x200000000480ul,
+ /*flags=O_VERIFY*/ 0x200000ul,
+ /*mode=S_IWOTH|S_IWGRP|S_IXUSR|S_IWUSR*/ 0xd2ul);
+ if (res != -1)
+ r[1] = res;
+ break;
+ case 3:
+ syscall(SYS_mmap, /*addr=*/0x200000000000ul, /*len=*/0x200000ul,
+ /*prot=PROT_WRITE|PROT_READ*/ 3ul,
+ /*flags=MAP_FIXED|MAP_PRIVATE*/ 0x12ul, /*fd=*/r[1],
+ /*offset=*/0ul);
+ break;
+ case 4:
+ memcpy((void*)0x200000000100, "./file0\000", 8);
+ res = syscall(SYS_open, /*file=*/0x200000000100ul,
+ /*flags=O_DIRECT*/ 0x10000ul, /*mode=*/0ul);
+ if (res != -1)
+ r[2] = res;
+ break;
+ case 5:
+ memcpy((void*)0x2000000016c0, "./file0\000", 8);
+ res = syscall(SYS_open, /*file=*/0x2000000016c0ul, /*flags=O_WRONLY*/ 1ul,
+ /*mode=*/0ul);
+ if (res != -1)
+ r[3] = res;
+ break;
+ case 6:
+ *(uint64_t*)0x200000000080 = 0x2000000006c0;
+ *(uint64_t*)0x200000000088 = 0x100000;
+ syscall(SYS_pwritev, /*fd=*/r[3], /*vec=*/0x200000000080ul, /*vlen=*/1ul,
+ /*off=*/0ul);
+ break;
+ case 7:
+ *(uint64_t*)0x200000001780 = 0x200000000180;
+ *(uint64_t*)0x200000001788 = 0x1b133353141e377d;
+ syscall(SYS_preadv, /*fd=*/r[2], /*vec=*/0x200000001780ul,
+ /*vlen=*/0x10000000000000d1ul, /*off=*/0ul);
+ break;
+ case 8:
+ memcpy((void*)0x200000000480, "./file0\000", 8);
+ res = syscall(
+ SYS_open, /*file=*/0x200000000480ul,
+ /*flags=O_NONBLOCK|O_CREAT|O_RDWR|0x80400000000000*/ 0x80400000000206ul,
+ /*mode=*/0ul);
+ if (res != -1)
+ r[4] = res;
+ break;
+ case 9:
+ syscall(SYS_mmap, /*addr=*/0x200000000000ul, /*len=*/0x200000ul,
+ /*prot=PROT_WRITE|PROT_READ*/ 3ul,
+ /*flags=MAP_FIXED|MAP_SHARED|0x20000*/ 0x20011ul, /*fd=*/r[4],
+ /*offset=*/0ul);
+ break;
+ case 10:
+ syscall(SYS_setsockopt, /*fd=*/(intptr_t)-1, /*level=*/6,
+ /*optname=TCP_LOGID*/ 0x24, /*optval=*/0ul, /*optlen=*/0ul);
+ break;
+ case 11:
+ syscall(SYS_setsockopt, /*fd=*/(intptr_t)-1, /*level=*/6,
+ /*optname=TCP_LOGID*/ 0x24, /*optval=*/0ul, /*optlen=*/0ul);
+ break;
+ }
+}
+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;
+ use_temporary_dir();
+ do_sandbox_none();
+ return 0;
+}
+EOF
+mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1
+
+cd /tmp
+timeout 3m /tmp/$prog > /dev/null 2>&1
+
+rm -rf /tmp/$prog /tmp/$prog.c /tmp/$prog.core /tmp/$prog.??????
+exit 0
diff --git a/tools/test/stress2/misc/syzkaller75.sh b/tools/test/stress2/misc/syzkaller75.sh
new file mode 100755
index 000000000000..05e1e56bc44d
--- /dev/null
+++ b/tools/test/stress2/misc/syzkaller75.sh
@@ -0,0 +1,377 @@
+#!/bin/sh
+
+# panic: vm_pager_assert_in: page 0xfffffe001987bcc0 is mapped
+# cpuid = 10
+# time = 1745335200
+# KDB: stack backtrace:
+# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0108807700
+# vpanic() at vpanic+0x136/frame 0xfffffe0108807830
+# panic() at panic+0x43/frame 0xfffffe0108807890
+# vm_pager_assert_in() at vm_pager_assert_in+0x1fa/frame 0xfffffe01088078d0
+# vm_pager_get_pages() at vm_pager_get_pages+0x3d/frame 0xfffffe0108807920
+# vm_fault_getpages() at vm_fault_getpages+0x22b/frame 0xfffffe0108807980
+# vm_fault_object() at vm_fault_object+0x2ab/frame 0xfffffe01088079e0
+# vm_fault() at vm_fault+0x2d1/frame 0xfffffe0108807b40
+# vm_map_wire_locked() at vm_map_wire_locked+0x385/frame 0xfffffe0108807bf0
+# vm_mmap_object() at vm_mmap_object+0x2fd/frame 0xfffffe0108807c50
+# vn_mmap() at vn_mmap+0x152/frame 0xfffffe0108807ce0
+# kern_mmap() at kern_mmap+0x621/frame 0xfffffe0108807dc0
+# sys_mmap() at sys_mmap+0x42/frame 0xfffffe0108807e00
+# amd64_syscall() at amd64_syscall+0x15a/frame 0xfffffe0108807f30
+# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0108807f30
+# --- syscall (0, FreeBSD ELF64, syscall), rip = 0x82438d7fa, rsp = 0x824847f68, rbp = 0x824847f90 ---
+# KDB: enter: panic
+# [ thread pid 43067 tid 146060 ]
+# Stopped at kdb_enter+0x33: movq $0,0x124d7e2(%rip)
+# db> x/s version
+# version: FreeBSD 15.0-CURRENT #2 main-n276647-a098111a28ed-dirty: Tue Apr 22 16:37:39 CEST 2025
+# pho@mercat1.netperf.freebsd.org:/usr/src/sys/amd64/compile/PHO
+# db>
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+set -u
+prog=$(basename "$0" .sh)
+cat > /tmp/$prog.c <<EOF
+// https://syzkaller.appspot.com/bug?id=bab5b2c0d3e8f95d52a06ab501ddb3c11200a5c9
+// autogenerated by syzkaller (https://github.com/google/syzkaller)
+// syzbot+1cc9ede76727d2ea2e8d@syzkaller.appspotmail.com
+
+#define _GNU_SOURCE
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <pthread.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 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 thread_start(void* (*fn)(void*), void* arg)
+{
+ pthread_t th;
+ pthread_attr_t attr;
+ pthread_attr_init(&attr);
+ pthread_attr_setstacksize(&attr, 128 << 10);
+ int i = 0;
+ for (; i < 100; i++) {
+ if (pthread_create(&th, &attr, fn, arg) == 0) {
+ pthread_attr_destroy(&attr);
+ return;
+ }
+ if (errno == EAGAIN) {
+ usleep(50);
+ continue;
+ }
+ break;
+ }
+ exit(1);
+}
+
+typedef struct {
+ pthread_mutex_t mu;
+ pthread_cond_t cv;
+ int state;
+} event_t;
+
+static void event_init(event_t* ev)
+{
+ if (pthread_mutex_init(&ev->mu, 0))
+ exit(1);
+ if (pthread_cond_init(&ev->cv, 0))
+ exit(1);
+ ev->state = 0;
+}
+
+static void event_reset(event_t* ev)
+{
+ ev->state = 0;
+}
+
+static void event_set(event_t* ev)
+{
+ pthread_mutex_lock(&ev->mu);
+ if (ev->state)
+ exit(1);
+ ev->state = 1;
+ pthread_mutex_unlock(&ev->mu);
+ pthread_cond_broadcast(&ev->cv);
+}
+
+static void event_wait(event_t* ev)
+{
+ pthread_mutex_lock(&ev->mu);
+ while (!ev->state)
+ pthread_cond_wait(&ev->cv, &ev->mu);
+ pthread_mutex_unlock(&ev->mu);
+}
+
+static int event_isset(event_t* ev)
+{
+ pthread_mutex_lock(&ev->mu);
+ int res = ev->state;
+ pthread_mutex_unlock(&ev->mu);
+ return res;
+}
+
+static int event_timedwait(event_t* ev, uint64_t timeout)
+{
+ uint64_t start = current_time_ms();
+ uint64_t now = start;
+ pthread_mutex_lock(&ev->mu);
+ for (;;) {
+ if (ev->state)
+ break;
+ uint64_t remain = timeout - (now - start);
+ struct timespec ts;
+ ts.tv_sec = remain / 1000;
+ ts.tv_nsec = (remain % 1000) * 1000 * 1000;
+ pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
+ now = current_time_ms();
+ if (now - start > timeout)
+ break;
+ }
+ int res = ev->state;
+ pthread_mutex_unlock(&ev->mu);
+ return res;
+}
+
+struct thread_t {
+ int created, call;
+ event_t ready, done;
+};
+
+static struct thread_t threads[16];
+static void execute_call(int call);
+static int running;
+
+static void* thr(void* arg)
+{
+ struct thread_t* th = (struct thread_t*)arg;
+ for (;;) {
+ event_wait(&th->ready);
+ event_reset(&th->ready);
+ execute_call(th->call);
+ __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
+ event_set(&th->done);
+ }
+ return 0;
+}
+
+static void execute_one(void)
+{
+ if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
+ }
+ int i, call, thread;
+ for (call = 0; call < 11; call++) {
+ for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
+ thread++) {
+ struct thread_t* th = &threads[thread];
+ if (!th->created) {
+ th->created = 1;
+ event_init(&th->ready);
+ event_init(&th->done);
+ event_set(&th->done);
+ thread_start(thr, th);
+ }
+ if (!event_isset(&th->done))
+ continue;
+ event_reset(&th->done);
+ th->call = call;
+ __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
+ event_set(&th->ready);
+ event_timedwait(&th->done, 50);
+ break;
+ }
+ }
+ for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
+ sleep_ms(1);
+}
+
+static void execute_one(void);
+
+#define WAIT_FLAGS 0
+
+static void loop(void)
+{
+// int iter = 0;
+ for (;; /*iter++*/) {
+ 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[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
+ 0xffffffffffffffff};
+
+void execute_call(int call)
+{
+ intptr_t res = 0;
+ switch (call) {
+ case 0:
+ memcpy((void*)0x200000000200, "./file0\000", 8);
+ res = syscall(SYS_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000200ul,
+ /*flags=O_VERIFY|O_CREAT|O_CLOEXEC|O_WRONLY*/ 0x300201ul,
+ /*mode=S_IWGRP|S_IXUSR|S_IWUSR*/ 0xd0ul);
+ if (res != -1)
+ r[0] = res;
+ break;
+ case 1:
+ *(uint32_t*)0x200000000240 = r[0];
+ *(uint64_t*)0x200000000248 = 0x80000002;
+ *(uint64_t*)0x200000000250 = 0x200000000080;
+ memcpy((void*)0x200000000080, "\x1f\x9a\xc4", 3);
+ *(uint64_t*)0x200000000258 = 3;
+ *(uint32_t*)0x200000000260 = 0;
+ *(uint32_t*)0x200000000264 = 0;
+ *(uint64_t*)0x200000000268 = 0;
+ *(uint32_t*)0x200000000270 = 0;
+ *(uint32_t*)0x200000000274 = 0;
+ *(uint64_t*)0x200000000278 = 0;
+ *(uint64_t*)0x200000000280 = 7;
+ *(uint64_t*)0x200000000288 = 0;
+ *(uint32_t*)0x200000000290 = 0;
+ *(uint32_t*)0x200000000294 = 0;
+ *(uint64_t*)0x200000000298 = 0;
+ *(uint64_t*)0x2000000002a0 = 0;
+ *(uint64_t*)0x2000000002a8 = 0;
+ syscall(SYS_aio_write, /*iocb=*/0x200000000240ul);
+ break;
+ case 2:
+ syscall(SYS_mlockall, /*flags=MCL_FUTURE*/ 2ul);
+ break;
+ case 3:
+ memcpy((void*)0x200000000100, "./file0\000", 8);
+ res = syscall(SYS_open, /*file=*/0x200000000100ul,
+ /*flags=O_DIRECT*/ 0x10000ul, /*mode=*/0ul);
+ if (res != -1)
+ r[1] = res;
+ break;
+ case 4:
+ *(uint64_t*)0x200000001780 = 0x200000000180;
+ *(uint64_t*)0x200000001788 = 0x1b133353141e377d;
+ syscall(SYS_preadv, /*fd=*/r[1], /*vec=*/0x200000001780ul,
+ /*vlen=*/0x10000000000000d1ul, /*off=*/0ul);
+ break;
+ case 5:
+ memcpy((void*)0x200000000040, "./file0\000", 8);
+ syscall(
+ SYS_open, /*file=*/0x200000000040ul,
+ /*flags=O_TRUNC|O_NONBLOCK|O_NOFOLLOW|O_CREAT|O_APPEND|0x2*/ 0x70eul,
+ /*mode=*/0ul);
+ break;
+ case 6:
+ memcpy((void*)0x200000000480, "./file0\000", 8);
+ res = syscall(
+ SYS_open, /*file=*/0x200000000480ul,
+ /*flags=O_NONBLOCK|O_CREAT|O_RDWR|0x80400000000000*/ 0x80400000000206ul,
+ /*mode=*/0ul);
+ if (res != -1)
+ r[2] = res;
+ break;
+ case 7:
+ syscall(SYS_mmap, /*addr=*/0x200000000000ul, /*len=*/0x200000ul,
+ /*prot=PROT_WRITE|PROT_READ*/ 3ul,
+ /*flags=MAP_FIXED|MAP_SHARED|0x20000*/ 0x20011ul, /*fd=*/r[2],
+ /*offset=*/0ul);
+ break;
+ case 8:
+ memcpy((void*)0x200000000040, "./file0\000", 8);
+ syscall(SYS_truncate, /*file=*/0x200000000040ul, /*len=*/0xaa480ul);
+ break;
+ case 9:
+ memcpy((void*)0x200000000480, "./file0\000", 8);
+ res = syscall(SYS_open, /*file=*/0x200000000480ul, /*flags=*/0ul,
+ /*mode=*/0ul);
+ if (res != -1)
+ r[3] = res;
+ break;
+ case 10:
+ syscall(SYS_mmap, /*addr=*/0x200000000000ul, /*len=*/0x200000ul,
+ /*prot=PROT_WRITE|PROT_READ*/ 3ul,
+ /*flags=MAP_FIXED|MAP_PRIVATE*/ 0x12ul, /*fd=*/r[3],
+ /*offset=*/0ul);
+ break;
+ }
+}
+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;
+ loop();
+ 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
+
+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 /tmp/$prog.?????? $work
+exit 0