// https://syzkaller.appspot.com/bug?id=c396a23dfc5d7c2441beeee15bb754c0cee61b76
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.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/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#ifndef SYS_connect
#define SYS_connect 98
#endif
#ifndef SYS_dup2
#define SYS_dup2 90
#endif
#ifndef SYS_mmap
#define SYS_mmap 197
#endif
#ifndef SYS_setsockopt
#define SYS_setsockopt 105
#endif
#ifndef SYS_socket
#define SYS_socket 394
#endif
#ifndef SYS_write
#define SYS_write 4
#endif

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[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  res = syscall(SYS_socket, /*domain=PF_INET*/ 2ul, /*type=SOCK_RAW*/ 3ul,
                /*proto=*/0);
  if (res != -1)
    r[0] = res;
  res = syscall(SYS_socket, /*domain=PF_INET6*/ 0x18ul, /*type=SOCK_RAW*/ 3ul,
                /*proto=*/0);
  if (res != -1)
    r[1] = res;
  *(uint16_t*)0x200000c0 = 0x18e6;
  *(uint8_t*)0x200000c2 = 7;
  *(uint32_t*)0x200000c4 = 0;
  syscall(SYS_connect, /*fd=*/r[1], /*addr=*/0x200000c0ul, /*addrlen=*/0x1cul);
  syscall(SYS_dup2, /*oldfd=*/r[1], /*newfd=*/r[0]);
  *(uint32_t*)0x20000100 = 0x20000;
  syscall(SYS_setsockopt, /*fd=*/r[0], /*level=*/0xffff,
          /*optname=SO_SNDBUF*/ 0x1001, /*optval=*/0x20000100ul,
          /*optlen=*/4ul);
  memcpy((void*)0x20001680,
         "\x04\xbd\xfa\x5d\x1d\x28\x73\xc6\x3e\x35\x34\x82\x5b\xa1\x66\xe2\xfe"
         "\xa9\xae\xc4\x30\x50\x00\x61\x23\x33\x9a\x34\x6f\x73\x15\x73\xd8\xd5"
         "\x08\x75\x3f\x95\xb7\x68\x8a\xd4\x8b\x8c\xf6\xbb\xca\x32\x5c\xeb\xc3"
         "\x7f\xc4\xe1\xdd\x54\x3d\xbe\x2d\xa6\xdd",
         61);
  syscall(SYS_write, /*fd=*/r[0], /*buf=*/0x20001680ul, /*count=*/0x1001cul);
}
int main(void)
{
  syscall(SYS_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ*/ 3ul,
          /*flags=MAP_PRIVATE|MAP_FIXED|MAP_ANON*/ 0x1012ul, /*fd=*/-1,
          /*pad=*/0ul, /*offset=*/0ul);
  for (procid = 0; procid < 6; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}