// https://syzkaller.appspot.com/bug?id=038c47c353490e96ed3592dfd723466c8d2f0648
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <setjmp.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <unistd.h>

static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  if (__atomic_load_n(&skip_segv, __ATOMIC_RELAXED) &&
      (addr < prog_start || addr > prog_end)) {
    _longjmp(segv_env, 1);
  }
  exit(sig);
}

static void install_segv_handler(void)
{
  struct sigaction sa;
  memset(&sa, 0, sizeof(sa));
  sa.sa_handler = SIG_IGN;
  syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8);
  syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8);
  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(...)                                                        \
  {                                                                            \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    if (_setjmp(segv_env) == 0) {                                              \
      __VA_ARGS__;                                                             \
    }                                                                          \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
  }

uint64_t r[1] = {0xffffffffffffffff};

int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  install_segv_handler();
  long res = 0;
  res = syscall(__NR_socket, 0xa, 2, 0);
  if (res != -1)
    r[0] = res;
  NONFAILING(*(uint16_t*)0x20000000 = 0xa);
  NONFAILING(*(uint16_t*)0x20000002 = htobe16(0));
  NONFAILING(*(uint32_t*)0x20000004 = 0);
  NONFAILING(*(uint8_t*)0x20000008 = 0);
  NONFAILING(*(uint8_t*)0x20000009 = 0);
  NONFAILING(*(uint8_t*)0x2000000a = 0);
  NONFAILING(*(uint8_t*)0x2000000b = 0);
  NONFAILING(*(uint8_t*)0x2000000c = 0);
  NONFAILING(*(uint8_t*)0x2000000d = 0);
  NONFAILING(*(uint8_t*)0x2000000e = 0);
  NONFAILING(*(uint8_t*)0x2000000f = 0);
  NONFAILING(*(uint8_t*)0x20000010 = 0);
  NONFAILING(*(uint8_t*)0x20000011 = 0);
  NONFAILING(*(uint8_t*)0x20000012 = -1);
  NONFAILING(*(uint8_t*)0x20000013 = -1);
  NONFAILING(*(uint32_t*)0x20000014 = htobe32(0x7f000001));
  NONFAILING(*(uint32_t*)0x20000018 = 0);
  syscall(__NR_connect, r[0], 0x20000000, 0x1c);
  NONFAILING(*(uint32_t*)0x20000280 = 3);
  NONFAILING(*(uint16_t*)0x20000288 = 0xa);
  NONFAILING(*(uint16_t*)0x2000028a = htobe16(0x4e21));
  NONFAILING(*(uint32_t*)0x2000028c = 0xfffffffc);
  NONFAILING(*(uint8_t*)0x20000290 = -1);
  NONFAILING(*(uint8_t*)0x20000291 = 2);
  NONFAILING(*(uint8_t*)0x20000292 = 0);
  NONFAILING(*(uint8_t*)0x20000293 = 0);
  NONFAILING(*(uint8_t*)0x20000294 = 0);
  NONFAILING(*(uint8_t*)0x20000295 = 0);
  NONFAILING(*(uint8_t*)0x20000296 = 0);
  NONFAILING(*(uint8_t*)0x20000297 = 0);
  NONFAILING(*(uint8_t*)0x20000298 = 0);
  NONFAILING(*(uint8_t*)0x20000299 = 0);
  NONFAILING(*(uint8_t*)0x2000029a = 0);
  NONFAILING(*(uint8_t*)0x2000029b = 0);
  NONFAILING(*(uint8_t*)0x2000029c = 0);
  NONFAILING(*(uint8_t*)0x2000029d = 0);
  NONFAILING(*(uint8_t*)0x2000029e = 0);
  NONFAILING(*(uint8_t*)0x2000029f = 1);
  NONFAILING(*(uint32_t*)0x200002a0 = 5);
  syscall(__NR_setsockopt, r[0], 0x29, 0x2a, 0x20000280, 0x88);
  NONFAILING(*(uint32_t*)0x20000080 = 2);
  syscall(__NR_setsockopt, r[0], 0x29, 1, 0x20000080, 4);
  return 0;
}