// https://syzkaller.appspot.com/bug?id=abb6cc54bd2802dfdeb0978f7adf870325b80f92
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE

#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++) {
  }
}

#include <setjmp.h>
#include <signal.h>
#include <stdint.h>
#include <string.h>
#include <string.h>

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[59];
void test()
{
  memset(r, -1, sizeof(r));
  r[0] = syscall(__NR_mmap, 0x20000000ul, 0xfff000ul, 0x3ul, 0x32ul,
                 0xfffffffffffffffful, 0x0ul);
  r[1] = syscall(__NR_socket, 0x2ul, 0x1ul, 0x0ul);
  NONFAILING(*(uint64_t*)0x20001000 = (uint64_t)0x0);
  NONFAILING(*(uint16_t*)0x20001008 = (uint16_t)0x2);
  NONFAILING(*(uint16_t*)0x2000100a = (uint16_t)0x204e);
  NONFAILING(*(uint32_t*)0x2000100c = (uint32_t)0x10000e0);
  NONFAILING(*(uint8_t*)0x20001010 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001011 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001012 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001013 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001014 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001015 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001016 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001017 = (uint8_t)0x0);
  NONFAILING(*(uint16_t*)0x20001018 = (uint16_t)0x2);
  NONFAILING(*(uint16_t*)0x2000101a = (uint16_t)0x204e);
  NONFAILING(*(uint32_t*)0x2000101c = (uint32_t)0x10000e0);
  NONFAILING(*(uint8_t*)0x20001020 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001021 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001022 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001023 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001024 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001025 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001026 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001027 = (uint8_t)0x0);
  NONFAILING(*(uint16_t*)0x20001028 = (uint16_t)0x2);
  NONFAILING(*(uint16_t*)0x2000102a = (uint16_t)0x204e);
  NONFAILING(*(uint32_t*)0x2000102c = (uint32_t)0x20000e0);
  NONFAILING(*(uint8_t*)0x20001030 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001031 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001032 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001033 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001034 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001035 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001036 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20001037 = (uint8_t)0x0);
  NONFAILING(*(uint16_t*)0x20001038 = (uint16_t)0x0);
  NONFAILING(*(uint16_t*)0x2000103a = (uint16_t)0x0);
  NONFAILING(*(uint64_t*)0x20001040 = (uint64_t)0x0);
  NONFAILING(*(uint64_t*)0x20001048 = (uint64_t)0x0);
  NONFAILING(*(uint16_t*)0x20001050 = (uint16_t)0x2);
  NONFAILING(*(uint64_t*)0x20001058 = (uint64_t)0x20000000);
  NONFAILING(*(uint64_t*)0x20001060 = (uint64_t)0x0);
  NONFAILING(*(uint64_t*)0x20001068 = (uint64_t)0x0);
  NONFAILING(*(uint16_t*)0x20001070 = (uint16_t)0x0);
  r[45] =
      syscall(__NR_ioctl, 0xfffffffffffffffful, 0x890bul, 0x20001000ul);
  NONFAILING(*(uint32_t*)0x20001000 = (uint32_t)0xe);
  NONFAILING(*(uint32_t*)0x20001004 = (uint32_t)0x0);
  NONFAILING(*(uint32_t*)0x20001008 = (uint32_t)0x0);
  NONFAILING(*(uint32_t*)0x2000100c = (uint32_t)0x4);
  NONFAILING(*(uint32_t*)0x20001010 = (uint32_t)0x0);
  NONFAILING(*(uint32_t*)0x20001014 = (uint32_t)0xfffffffffffffffe);
  NONFAILING(*(uint32_t*)0x20001018 = (uint32_t)0x1000);
  NONFAILING(*(uint32_t*)0x2000101c = (uint32_t)0x0);
  NONFAILING(*(uint32_t*)0x20001020 = (uint32_t)0x100002);
  NONFAILING(*(uint32_t*)0x20001024 = (uint32_t)0xffffffffffff188e);
  r[56] = syscall(__NR_setsockopt, 0xfffffffffffffffful, 0x6ul, 0x16ul,
                  0x20001000ul, 0x5ul);
  NONFAILING(*(uint32_t*)0x20000ffc = (uint32_t)0x0);
  r[58] = syscall(__NR_setsockopt, r[1], 0x0ul, 0x10000000000040ul,
                  0x20000ffcul, 0x4ul);
}

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