// https://syzkaller.appspot.com/bug?id=c9bad779c66fb840f87ed1dfeeaf4a0175de218f
// 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

int main(void)
{
  syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  install_segv_handler();
  intptr_t res = 0;
  res = syscall(__NR_socket, 0xaul, 1ul, 0);
  if (res != -1)
    r[0] = res;
  NONFAILING(*(uint16_t*)0x20000180 = 0xa);
  NONFAILING(*(uint16_t*)0x20000182 = htobe16(0x4e22));
  NONFAILING(*(uint32_t*)0x20000184 = htobe32(0));
  NONFAILING(*(uint64_t*)0x20000188 = htobe64(0));
  NONFAILING(*(uint64_t*)0x20000190 = htobe64(1));
  NONFAILING(*(uint32_t*)0x20000198 = 0);
  syscall(__NR_bind, r[0], 0x20000180ul, 0x1cul);
  syscall(__NR_listen, r[0], 7);
  res = syscall(__NR_socket, 0xaul, 1ul, 0);
  if (res != -1)
    r[1] = res;
  NONFAILING(*(uint16_t*)0x20b63fe4 = 0xa);
  NONFAILING(*(uint16_t*)0x20b63fe6 = htobe16(0x4e22));
  NONFAILING(*(uint32_t*)0x20b63fe8 = htobe32(0));
  NONFAILING(*(uint8_t*)0x20b63fec = 0);
  NONFAILING(*(uint8_t*)0x20b63fed = 0);
  NONFAILING(*(uint8_t*)0x20b63fee = 0);
  NONFAILING(*(uint8_t*)0x20b63fef = 0);
  NONFAILING(*(uint8_t*)0x20b63ff0 = 0);
  NONFAILING(*(uint8_t*)0x20b63ff1 = 0);
  NONFAILING(*(uint8_t*)0x20b63ff2 = 0);
  NONFAILING(*(uint8_t*)0x20b63ff3 = 0);
  NONFAILING(*(uint8_t*)0x20b63ff4 = 0);
  NONFAILING(*(uint8_t*)0x20b63ff5 = 0);
  NONFAILING(*(uint8_t*)0x20b63ff6 = 0);
  NONFAILING(*(uint8_t*)0x20b63ff7 = 0);
  NONFAILING(*(uint8_t*)0x20b63ff8 = 0);
  NONFAILING(*(uint8_t*)0x20b63ff9 = 0);
  NONFAILING(*(uint8_t*)0x20b63ffa = 0);
  NONFAILING(*(uint8_t*)0x20b63ffb = 0);
  NONFAILING(*(uint32_t*)0x20b63ffc = 0);
  syscall(__NR_sendto, r[1], 0ul, 0ul, 0x20004005ul, 0x20b63fe4ul, 0x1cul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 4);
  if (res != -1)
    r[2] = res;
  NONFAILING(*(uint64_t*)0x20000140 = 0x20000080);
  NONFAILING(memcpy(
      (void*)0x20000080,
      "\x58\x00\x00\x00\x14\x00\x19\x23\x40\x83\x4b\x80\x04\x0d\x8c\x56\x0a\x06"
      "\x7f\x02\x00\xff\x00\x00\x00\x00\x00\x00\x00\x00\x58\x00\x0b\x48\x24\xca"
      "\x94\x5f\x64\x00\x94\x00\xff\x03\x25\x01\x0e\xbc\x00\x00\x00\x00\x00\x00"
      "\x00\x80\x00\xf0\xff\xfe\xff\xe8\x09\x00\x53\x00\xff\xf5\xdd\x00\x00\x00"
      "\x10\x00\x01\x00\x07\x0c\x10\x00\x00\x00\x01\x00\x00\x00\x00\x00",
      88));
  NONFAILING(*(uint64_t*)0x20000148 = 0x58);
  syscall(__NR_writev, r[2], 0x20000140ul, 1ul);
  return 0;
}