// https://syzkaller.appspot.com/bug?id=ae28a692910f2e066889b98c890adc67d88a4fda
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

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

static __thread int clone_ongoing;
static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
  if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) {
    exit(sig);
  }
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0;
  int valid = addr < prog_start || addr > prog_end;
  if (sig == SIGBUS)
    valid = 1;
  if (skip && valid) {
    _longjmp(segv_env, 1);
  }
  exit(sig);
}

static void install_segv_handler(void)
{
  struct sigaction sa;
  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(...)                                                        \
  ({                                                                           \
    int ok = 1;                                                                \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    if (_setjmp(segv_env) == 0) {                                              \
      __VA_ARGS__;                                                             \
    } else                                                                     \
      ok = 0;                                                                  \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    ok;                                                                        \
  })

uint64_t r[1] = {0xffffffffffffffff};

int main(void)
{
  syscall(SYS_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/7ul,
          /*flags=*/0x1012ul, /*fd=*/-1, /*offset=*/0ul);
  install_segv_handler();
  intptr_t res = 0;
  NONFAILING(memcpy((void*)0x20000040, "/dev/mdctl\000", 11));
  res = syscall(SYS_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x20000040ul,
                /*flags=*/0ul, /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  NONFAILING(*(uint32_t*)0x20000100 = 0);
  NONFAILING(*(uint32_t*)0x20000104 = 2);
  NONFAILING(*(uint32_t*)0x20000108 = 0);
  NONFAILING(*(uint64_t*)0x20000110 = 0x20000080);
  NONFAILING(memcpy((void*)0x20000080, "./file0\000", 8));
  NONFAILING(*(uint64_t*)0x20000118 = 0x7d451615);
  NONFAILING(*(uint32_t*)0x20000120 = 0x200);
  NONFAILING(*(uint32_t*)0x20000124 = 2);
  NONFAILING(*(uint64_t*)0x20000128 = 2);
  NONFAILING(*(uint32_t*)0x20000130 = 3);
  NONFAILING(*(uint32_t*)0x20000134 = 0);
  NONFAILING(*(uint64_t*)0x20000138 = 0x200000c0);
  NONFAILING(memcpy((void*)0x200000c0, "/dev/bpf\000", 9));
  NONFAILING(*(uint32_t*)0x20000140 = 3);
  NONFAILING(*(uint32_t*)0x20000144 = 1);
  NONFAILING(*(uint32_t*)0x20000148 = 4);
  NONFAILING(*(uint32_t*)0x2000014c = 0x8000);
  NONFAILING(*(uint32_t*)0x20000150 = 0x851);
  NONFAILING(*(uint32_t*)0x20000154 = 0);
  NONFAILING(*(uint32_t*)0x20000158 = 7);
  NONFAILING(*(uint32_t*)0x2000015c = 5);
  NONFAILING(*(uint32_t*)0x20000160 = 6);
  NONFAILING(*(uint32_t*)0x20000164 = 1);
  NONFAILING(*(uint32_t*)0x20000168 = 2);
  NONFAILING(*(uint32_t*)0x2000016c = 0x7ff);
  NONFAILING(*(uint32_t*)0x20000170 = 0xfffffffa);
  NONFAILING(*(uint32_t*)0x20000174 = 0xfffffe00);
  NONFAILING(*(uint32_t*)0x20000178 = 0xdf5);
  NONFAILING(*(uint32_t*)0x2000017c = 2);
  NONFAILING(*(uint32_t*)0x20000180 = 9);
  NONFAILING(*(uint32_t*)0x20000184 = 4);
  NONFAILING(*(uint32_t*)0x20000188 = 5);
  NONFAILING(*(uint32_t*)0x2000018c = 6);
  NONFAILING(*(uint32_t*)0x20000190 = 3);
  NONFAILING(*(uint32_t*)0x20000194 = 0x815);
  NONFAILING(*(uint32_t*)0x20000198 = 6);
  NONFAILING(*(uint32_t*)0x2000019c = 6);
  NONFAILING(*(uint32_t*)0x200001a0 = 8);
  NONFAILING(*(uint32_t*)0x200001a4 = 5);
  NONFAILING(*(uint32_t*)0x200001a8 = 3);
  NONFAILING(*(uint32_t*)0x200001ac = 3);
  NONFAILING(*(uint32_t*)0x200001b0 = 9);
  NONFAILING(*(uint32_t*)0x200001b4 = 0xff);
  NONFAILING(*(uint32_t*)0x200001b8 = 6);
  NONFAILING(*(uint32_t*)0x200001bc = 2);
  NONFAILING(*(uint32_t*)0x200001c0 = 0);
  NONFAILING(*(uint32_t*)0x200001c4 = 0x74c763ea);
  NONFAILING(*(uint32_t*)0x200001c8 = 1);
  NONFAILING(*(uint32_t*)0x200001cc = 8);
  NONFAILING(*(uint32_t*)0x200001d0 = 0xaae4);
  NONFAILING(*(uint32_t*)0x200001d4 = 7);
  NONFAILING(*(uint32_t*)0x200001d8 = 0x34a5d0be);
  NONFAILING(*(uint32_t*)0x200001dc = 0x80000000);
  NONFAILING(*(uint32_t*)0x200001e0 = 4);
  NONFAILING(*(uint32_t*)0x200001e4 = 4);
  NONFAILING(*(uint32_t*)0x200001e8 = 0);
  NONFAILING(*(uint32_t*)0x200001ec = 8);
  NONFAILING(*(uint32_t*)0x200001f0 = 0);
  NONFAILING(*(uint32_t*)0x200001f4 = 9);
  NONFAILING(*(uint32_t*)0x200001f8 = 3);
  NONFAILING(*(uint32_t*)0x200001fc = 0xfffffe01);
  NONFAILING(*(uint32_t*)0x20000200 = 7);
  NONFAILING(*(uint32_t*)0x20000204 = 0x80);
  NONFAILING(*(uint32_t*)0x20000208 = 7);
  NONFAILING(*(uint32_t*)0x2000020c = 0xfffffe00);
  NONFAILING(*(uint32_t*)0x20000210 = 0x200);
  NONFAILING(*(uint32_t*)0x20000214 = 5);
  NONFAILING(*(uint32_t*)0x20000218 = 4);
  NONFAILING(*(uint32_t*)0x2000021c = 1);
  NONFAILING(*(uint32_t*)0x20000220 = 0x29);
  NONFAILING(*(uint32_t*)0x20000224 = 0x32);
  NONFAILING(*(uint32_t*)0x20000228 = 2);
  NONFAILING(*(uint32_t*)0x2000022c = 0x3f);
  NONFAILING(*(uint32_t*)0x20000230 = 8);
  NONFAILING(*(uint32_t*)0x20000234 = 6);
  NONFAILING(*(uint32_t*)0x20000238 = 1);
  NONFAILING(*(uint32_t*)0x2000023c = 0x7fff);
  NONFAILING(*(uint32_t*)0x20000240 = 2);
  NONFAILING(*(uint32_t*)0x20000244 = 7);
  NONFAILING(*(uint32_t*)0x20000248 = 1);
  NONFAILING(*(uint32_t*)0x2000024c = 0);
  NONFAILING(*(uint32_t*)0x20000250 = 2);
  NONFAILING(*(uint32_t*)0x20000254 = 1);
  NONFAILING(*(uint32_t*)0x20000258 = 0x47);
  NONFAILING(*(uint32_t*)0x2000025c = 6);
  NONFAILING(*(uint32_t*)0x20000260 = 0xa71);
  NONFAILING(*(uint32_t*)0x20000264 = 7);
  NONFAILING(*(uint32_t*)0x20000268 = 0x100);
  NONFAILING(*(uint32_t*)0x2000026c = 5);
  NONFAILING(*(uint32_t*)0x20000270 = 0xe5);
  NONFAILING(*(uint32_t*)0x20000274 = 4);
  NONFAILING(*(uint32_t*)0x20000278 = 0);
  NONFAILING(*(uint32_t*)0x2000027c = 1);
  NONFAILING(*(uint32_t*)0x20000280 = 0xfffff800);
  NONFAILING(*(uint32_t*)0x20000284 = 0x10661f27);
  NONFAILING(*(uint32_t*)0x20000288 = 0x5af);
  NONFAILING(*(uint32_t*)0x2000028c = 0x80000001);
  NONFAILING(*(uint32_t*)0x20000290 = 0xae);
  NONFAILING(*(uint32_t*)0x20000294 = 0x30);
  NONFAILING(*(uint32_t*)0x20000298 = 5);
  NONFAILING(*(uint32_t*)0x2000029c = 4);
  NONFAILING(*(uint32_t*)0x200002a0 = 3);
  NONFAILING(*(uint32_t*)0x200002a4 = 0x101);
  NONFAILING(*(uint32_t*)0x200002a8 = 0xffffffec);
  NONFAILING(*(uint32_t*)0x200002ac = 0xff);
  NONFAILING(*(uint32_t*)0x200002b0 = 7);
  NONFAILING(*(uint32_t*)0x200002b4 = 0x2a9);
  NONFAILING(*(uint32_t*)0x200002b8 = 1);
  NONFAILING(*(uint32_t*)0x200002bc = 4);
  syscall(SYS_ioctl, /*fd=*/r[0], /*cmd=*/0xc1c06d00ul, /*arg=*/0x20000100ul);
  return 0;
}