// https://syzkaller.appspot.com/bug?id=bd3860e571a12c18739719a7aff638acc9fe4072
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <setjmp.h>
#include <signal.h>
#include <stdint.h>
#include <string.h>
#include <sys/syscall.h>
#include <unistd.h>

__attribute__((noreturn)) static void doexit(int status)
{
  volatile unsigned i;
  syscall(__NR_exit_group, status);
  for (i = 0;; i++) {
  }
}

static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* uctx)
{
  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);
  }
  doexit(sig);
  for (;;) {
  }
}

static void install_segv_handler()
{
  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);               \
  }

static void test();

void loop()
{
  while (1) {
    test();
  }
}

long r[26];
void test()
{
  memset(r, -1, sizeof(r));
  r[0] = syscall(__NR_mmap, 0x20000000ul, 0xfff000ul, 0x3ul, 0x32ul,
                 0xfffffffffffffffful, 0x0ul);
  NONFAILING(memcpy((void*)0x20aeaff7,
                    "\x2f\x64\x65\x76\x2f\x6b\x76\x6d\x00", 9));
  r[2] = syscall(__NR_openat, 0xffffffffffffff9cul, 0x20aeaff7ul, 0x0ul,
                 0x0ul);
  r[3] = syscall(__NR_ioctl, r[2], 0xae01ul, 0x0ul);
  r[4] = syscall(__NR_eventfd2, 0x0ul, 0x0ul);
  NONFAILING(*(uint32_t*)0x20158000 = (uint32_t)0xffffffffffffffff);
  NONFAILING(*(uint32_t*)0x20158004 = (uint32_t)0x400000000005);
  NONFAILING(*(uint32_t*)0x20158008 = (uint32_t)0x2);
  NONFAILING(*(uint32_t*)0x2015800c = r[4]);
  NONFAILING(*(uint8_t*)0x20158010 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20158011 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20158012 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20158013 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20158014 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20158015 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20158016 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20158017 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20158018 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20158019 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x2015801a = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x2015801b = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x2015801c = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x2015801d = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x2015801e = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x2015801f = (uint8_t)0x0);
  r[25] = syscall(__NR_ioctl, r[3], 0x4020ae76ul, 0x20158000ul);
}

int main()
{
  int i;
  for (i = 0; i < 8; i++) {
    if (fork() == 0) {
      install_segv_handler();
      loop();
      return 0;
    }
  }
  sleep(1000000);
  return 0;
}