// https://syzkaller.appspot.com/bug?id=bda19bf6b14e7fddccf28ac6f0205c7df6d8c32e
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#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)
{
  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 (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  res = syscall(SYS_kqueue);
  if (res != -1)
    r[0] = res;
  *(uint64_t*)0x200001c0 = 0;
  *(uint16_t*)0x200001c8 = 0xfffd;
  *(uint16_t*)0x200001ca = 0;
  *(uint32_t*)0x200001cc = 0;
  *(uint64_t*)0x200001d0 = 0;
  *(uint64_t*)0x200001d8 = 0;
  *(uint64_t*)0x200001e0 = 0;
  *(uint64_t*)0x200001e8 = 0;
  *(uint64_t*)0x200001f0 = 0;
  *(uint64_t*)0x200001f8 = 0;
  *(uint64_t*)0x20000200 = 0;
  *(uint16_t*)0x20000208 = 0xfff8;
  *(uint16_t*)0x2000020a = 0;
  *(uint32_t*)0x2000020c = 0;
  *(uint64_t*)0x20000210 = 0;
  *(uint64_t*)0x20000218 = 0;
  *(uint64_t*)0x20000220 = 0;
  *(uint64_t*)0x20000228 = 0;
  *(uint64_t*)0x20000230 = 0;
  *(uint64_t*)0x20000238 = 0;
  *(uint64_t*)0x20000240 = 0;
  *(uint16_t*)0x20000248 = 0xfffe;
  *(uint16_t*)0x2000024a = 0;
  *(uint32_t*)0x2000024c = 0;
  *(uint64_t*)0x20000250 = 0;
  *(uint64_t*)0x20000258 = 0;
  *(uint64_t*)0x20000260 = 0;
  *(uint64_t*)0x20000268 = 0;
  *(uint64_t*)0x20000270 = 0;
  *(uint64_t*)0x20000278 = 0;
  *(uint64_t*)0x20000280 = 0;
  *(uint16_t*)0x20000288 = 0xfff8;
  *(uint16_t*)0x2000028a = 1;
  *(uint32_t*)0x2000028c = 0;
  *(uint64_t*)0x20000290 = 0;
  *(uint64_t*)0x20000298 = 0;
  *(uint64_t*)0x200002a0 = 0;
  *(uint64_t*)0x200002a8 = 0;
  *(uint64_t*)0x200002b0 = 0;
  *(uint64_t*)0x200002b8 = 0;
  *(uint64_t*)0x200002c0 = 0;
  *(uint16_t*)0x200002c8 = 0xfffb;
  *(uint16_t*)0x200002ca = 0x33;
  *(uint32_t*)0x200002cc = 0;
  *(uint64_t*)0x200002d0 = 0;
  *(uint64_t*)0x200002d8 = 0;
  *(uint64_t*)0x200002e0 = 0;
  *(uint64_t*)0x200002e8 = 0;
  *(uint64_t*)0x200002f0 = 0;
  *(uint64_t*)0x200002f8 = 0;
  *(uint64_t*)0x20000300 = 0;
  *(uint16_t*)0x20000308 = 0xfff9;
  *(uint16_t*)0x2000030a = 0xc9;
  *(uint32_t*)0x2000030c = 1;
  *(uint64_t*)0x20000310 = 0x1a8000000000;
  *(uint64_t*)0x20000318 = 0;
  *(uint64_t*)0x20000320 = 0;
  *(uint64_t*)0x20000328 = 0;
  *(uint64_t*)0x20000330 = 0;
  *(uint64_t*)0x20000338 = 0;
  *(uint64_t*)0x20000340 = 0;
  *(uint16_t*)0x20000348 = 0xfff9;
  *(uint16_t*)0x2000034a = 0xeb;
  *(uint32_t*)0x2000034c = 0x982d25dd;
  *(uint64_t*)0x20000350 = 0;
  *(uint64_t*)0x20000358 = 0;
  *(uint64_t*)0x20000360 = 0;
  *(uint64_t*)0x20000368 = 0;
  *(uint64_t*)0x20000370 = 0;
  *(uint64_t*)0x20000378 = 0;
  *(uint64_t*)0x20000440 = 0;
  *(uint64_t*)0x20000448 = 0;
  syscall(SYS_kevent, /*kqueue=*/r[0], /*changelist=*/0x200001c0ul,
          /*nchanges=*/0xfffful, /*eventlist=*/0x20000300ul,
          /*nevents=*/0xfffful, /*timeout=*/0x20000440ul);
}
int main(void)
{
  syscall(SYS_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/7ul,
          /*flags=*/0x1012ul, /*fd=*/-1, /*offset=*/0ul);
  for (procid = 0; procid < 4; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}