// https://syzkaller.appspot.com/bug?id=4f12fad0cf835e87cbf1e8c6a460bf10b91b3427
// 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_socket, /*domain=*/0x1cul, /*type=*/1ul, /*proto=*/0x84);
  if (res != -1)
    r[0] = res;
  *(uint8_t*)0x20000040 = 0x1c;
  *(uint8_t*)0x20000041 = 0x1c;
  *(uint16_t*)0x20000042 = htobe16(0x4e22 + procid * 4);
  *(uint32_t*)0x20000044 = 0;
  *(uint64_t*)0x20000048 = htobe64(0);
  *(uint64_t*)0x20000050 = htobe64(1);
  *(uint32_t*)0x20000058 = 0;
  syscall(SYS_bind, /*fd=*/r[0], /*addr=*/0x20000040ul, /*addrlen=*/0x1cul);
  *(uint8_t*)0x20000180 = 0x1c;
  *(uint8_t*)0x20000181 = 0x1c;
  *(uint16_t*)0x20000182 = htobe16(0x4e22 + procid * 4);
  *(uint32_t*)0x20000184 = 0x2000000;
  *(uint64_t*)0x20000188 = htobe64(0);
  *(uint64_t*)0x20000190 = htobe64(1);
  *(uint32_t*)0x20000198 = 0;
  syscall(SYS_connect, /*fd=*/r[0], /*addr=*/0x20000180ul, /*addrlen=*/0x1cul);
  *(uint32_t*)0x20000300 = 0x80000021;
  syscall(SYS_setsockopt, /*fd=*/r[0], /*level=*/0x84, /*opt=*/0x1b,
          /*val=*/0x20000300ul, /*len=*/4ul);
  memset((void*)0x20000480, 163, 1);
  syscall(SYS_sendto, /*fd=*/r[0], /*buf=*/0x20000480ul, /*len=*/0xfffffe5cul,
          /*f=*/0x188ul, /*addr=*/0ul, /*addrlen=*/0ul);
  syscall(SYS_shutdown, /*fd=*/r[0], /*how=*/0ul);
}
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;
}