// https://syzkaller.appspot.com/bug?id=1fbcb607cf49d8b5a3c8e056971f045f9bfa34f3
// 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[2] = {0xffffffffffffffff, 0xffffffffffffffff};

int main(void)
{
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x32ul, -1, 0);
  install_segv_handler();
  intptr_t res = 0;
  res = syscall(__NR_socket, 0x10ul, 3ul, 0x14ul);
  if (res != -1)
    r[0] = res;
  NONFAILING(*(uint64_t*)0x200031c0 = 0);
  NONFAILING(*(uint32_t*)0x200031c8 = 0);
  NONFAILING(*(uint64_t*)0x200031d0 = 0x20003180);
  NONFAILING(*(uint64_t*)0x20003180 = 0x20003000);
  NONFAILING(*(uint32_t*)0x20003000 = 0x38);
  NONFAILING(*(uint16_t*)0x20003004 = 0x1403);
  NONFAILING(*(uint16_t*)0x20003006 = 1);
  NONFAILING(*(uint32_t*)0x20003008 = 0);
  NONFAILING(*(uint32_t*)0x2000300c = 0);
  NONFAILING(*(uint16_t*)0x20003010 = 9);
  NONFAILING(*(uint16_t*)0x20003012 = 2);
  NONFAILING(memcpy((void*)0x20003014, "syz1\000", 5));
  NONFAILING(*(uint16_t*)0x2000301c = 8);
  NONFAILING(*(uint16_t*)0x2000301e = 0x41);
  NONFAILING(memcpy((void*)0x20003020, "siw\000", 4));
  NONFAILING(*(uint16_t*)0x20003024 = 0x14);
  NONFAILING(*(uint16_t*)0x20003026 = 0x33);
  NONFAILING(
      memcpy((void*)0x20003028,
             "lo\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16));
  NONFAILING(*(uint64_t*)0x20003188 = 0x38);
  NONFAILING(*(uint64_t*)0x200031d8 = 1);
  NONFAILING(*(uint64_t*)0x200031e0 = 0);
  NONFAILING(*(uint64_t*)0x200031e8 = 0);
  NONFAILING(*(uint32_t*)0x200031f0 = 0);
  syscall(__NR_sendmsg, r[0], 0x200031c0ul, 0ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0x14ul);
  if (res != -1)
    r[1] = res;
  NONFAILING(*(uint64_t*)0x20000240 = 0);
  NONFAILING(*(uint32_t*)0x20000248 = 0);
  NONFAILING(*(uint64_t*)0x20000250 = 0x20000200);
  NONFAILING(*(uint64_t*)0x20000200 = 0x20000180);
  NONFAILING(*(uint32_t*)0x20000180 = 0x30);
  NONFAILING(*(uint16_t*)0x20000184 = 0x1410);
  NONFAILING(*(uint16_t*)0x20000186 = 1);
  NONFAILING(*(uint32_t*)0x20000188 = 0);
  NONFAILING(*(uint32_t*)0x2000018c = 0);
  NONFAILING(*(uint16_t*)0x20000190 = 8);
  NONFAILING(*(uint16_t*)0x20000192 = 0x4b);
  NONFAILING(*(uint32_t*)0x20000194 = 0x13);
  NONFAILING(*(uint16_t*)0x20000198 = 8);
  NONFAILING(*(uint16_t*)0x2000019a = 0x4a);
  NONFAILING(*(uint32_t*)0x2000019c = 0);
  NONFAILING(*(uint16_t*)0x200001a0 = 8);
  NONFAILING(*(uint16_t*)0x200001a2 = 1);
  NONFAILING(*(uint32_t*)0x200001a4 = 0);
  NONFAILING(*(uint16_t*)0x200001a8 = 8);
  NONFAILING(*(uint16_t*)0x200001aa = 3);
  NONFAILING(*(uint32_t*)0x200001ac = 1);
  NONFAILING(*(uint64_t*)0x20000208 = 0x30);
  NONFAILING(*(uint64_t*)0x20000258 = 1);
  NONFAILING(*(uint64_t*)0x20000260 = 0);
  NONFAILING(*(uint64_t*)0x20000268 = 0);
  NONFAILING(*(uint32_t*)0x20000270 = 0x20000021);
  syscall(__NR_sendmsg, r[1], 0x20000240ul, 0ul);
  return 0;
}