// https://syzkaller.appspot.com/bug?id=7c48f2a02168c6d8581d28dcc5c3c5b7a7c52f21
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <errno.h>
#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/resource.h>
#include <sys/stat.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;                                                                        \
  })

static void use_temporary_dir(void)
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    exit(1);
  if (chmod(tmpdir, 0777))
    exit(1);
  if (chdir(tmpdir))
    exit(1);
}

static void sandbox_common()
{
  if (setsid() == -1 && errno != EPERM)
    exit(1);
  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = 128 << 20;
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 8 << 20;
  setrlimit(RLIMIT_MEMLOCK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_FSIZE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_STACK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 0;
  setrlimit(RLIMIT_CORE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 256;
  setrlimit(RLIMIT_NOFILE, &rlim);
}

static void loop();

static int do_sandbox_none(void)
{
  sandbox_common();
  loop();
  return 0;
}

uint64_t r[1] = {0xffffffffffffffff};

void loop(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  syscall(SYS_fhstat, /*fhp=*/0ul, /*statbuf=*/0ul);
  NONFAILING(memcpy((void*)0x200000000000, "/dev/mdctl\000", 11));
  res = syscall(SYS_openat, /*fd=*/0xffffffffffffff9cul,
                /*file=*/0x200000000000ul, /*flags=*/0ul, /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  NONFAILING(*(uint32_t*)0x200000000340 = 0);
  NONFAILING(*(uint32_t*)0x200000000344 = 7);
  NONFAILING(*(uint32_t*)0x200000000348 = 0);
  NONFAILING(*(uint64_t*)0x200000000350 = 0);
  NONFAILING(*(uint64_t*)0x200000000358 = 0x800000008);
  NONFAILING(*(uint32_t*)0x200000000360 = 4);
  NONFAILING(*(uint32_t*)0x200000000364 = 6);
  NONFAILING(*(uint64_t*)0x200000000368 = 0xa);
  NONFAILING(*(uint32_t*)0x200000000370 = 0);
  NONFAILING(*(uint32_t*)0x200000000374 = 0xa7);
  NONFAILING(*(uint64_t*)0x200000000378 = 0);
  NONFAILING(*(uint32_t*)0x200000000380 = 0x18);
  NONFAILING(*(uint32_t*)0x200000000384 = 6);
  NONFAILING(*(uint32_t*)0x200000000388 = 9);
  NONFAILING(*(uint32_t*)0x20000000038c = 2);
  NONFAILING(*(uint32_t*)0x200000000390 = 4);
  NONFAILING(*(uint32_t*)0x200000000394 = 4);
  NONFAILING(*(uint32_t*)0x200000000398 = 6);
  NONFAILING(*(uint32_t*)0x20000000039c = 0xf);
  NONFAILING(*(uint32_t*)0x2000000003a0 = 6);
  NONFAILING(*(uint32_t*)0x2000000003a4 = 7);
  NONFAILING(*(uint32_t*)0x2000000003a8 = 0x408);
  NONFAILING(*(uint32_t*)0x2000000003ac = 7);
  NONFAILING(*(uint32_t*)0x2000000003b0 = 5);
  NONFAILING(*(uint32_t*)0x2000000003b4 = 1);
  NONFAILING(*(uint32_t*)0x2000000003b8 = 1);
  NONFAILING(*(uint32_t*)0x2000000003bc = 0xfffffff3);
  NONFAILING(*(uint32_t*)0x2000000003c0 = 9);
  NONFAILING(*(uint32_t*)0x2000000003c4 = 6);
  NONFAILING(*(uint32_t*)0x2000000003c8 = 0x8000007);
  NONFAILING(*(uint32_t*)0x2000000003cc = 0);
  NONFAILING(*(uint32_t*)0x2000000003d0 = 0x401);
  NONFAILING(*(uint32_t*)0x2000000003d4 = 9);
  NONFAILING(*(uint32_t*)0x2000000003d8 = 0xcde);
  NONFAILING(*(uint32_t*)0x2000000003dc = 0x100);
  NONFAILING(*(uint32_t*)0x2000000003e0 = 0xfffffff8);
  NONFAILING(*(uint32_t*)0x2000000003e4 = 7);
  NONFAILING(*(uint32_t*)0x2000000003e8 = 7);
  NONFAILING(*(uint32_t*)0x2000000003ec = 0);
  NONFAILING(*(uint32_t*)0x2000000003f0 = 5);
  NONFAILING(*(uint32_t*)0x2000000003f4 = 0x5ba);
  NONFAILING(*(uint32_t*)0x2000000003f8 = 7);
  NONFAILING(*(uint32_t*)0x2000000003fc = 0xffbffffa);
  NONFAILING(*(uint32_t*)0x200000000400 = 5);
  NONFAILING(*(uint32_t*)0x200000000404 = 9);
  NONFAILING(*(uint32_t*)0x200000000408 = 0x3d5532c1);
  NONFAILING(*(uint32_t*)0x20000000040c = 7);
  NONFAILING(*(uint32_t*)0x200000000410 = 3);
  NONFAILING(*(uint32_t*)0x200000000414 = 0x8000);
  NONFAILING(*(uint32_t*)0x200000000418 = 2);
  NONFAILING(*(uint32_t*)0x20000000041c = 1);
  NONFAILING(*(uint32_t*)0x200000000420 = 3);
  NONFAILING(*(uint32_t*)0x200000000424 = 0);
  NONFAILING(*(uint32_t*)0x200000000428 = 0);
  NONFAILING(*(uint32_t*)0x20000000042c = 2);
  NONFAILING(*(uint32_t*)0x200000000430 = 6);
  NONFAILING(*(uint32_t*)0x200000000434 = 0x27ad222b);
  NONFAILING(*(uint32_t*)0x200000000438 = 6);
  NONFAILING(*(uint32_t*)0x20000000043c = 0x80000003);
  NONFAILING(*(uint32_t*)0x200000000440 = 0xac5e);
  NONFAILING(*(uint32_t*)0x200000000444 = 2);
  NONFAILING(*(uint32_t*)0x200000000448 = 0xfffffff7);
  NONFAILING(*(uint32_t*)0x20000000044c = 0x6ddbd7a2);
  NONFAILING(*(uint32_t*)0x200000000450 = 4);
  NONFAILING(*(uint32_t*)0x200000000454 = 0x52);
  NONFAILING(*(uint32_t*)0x200000000458 = 7);
  NONFAILING(*(uint32_t*)0x20000000045c = 8);
  NONFAILING(*(uint32_t*)0x200000000460 = 0x86);
  NONFAILING(*(uint32_t*)0x200000000464 = 9);
  NONFAILING(*(uint32_t*)0x200000000468 = 0x20);
  NONFAILING(*(uint32_t*)0x20000000046c = 3);
  NONFAILING(*(uint32_t*)0x200000000470 = 0x7ffe);
  NONFAILING(*(uint32_t*)0x200000000474 = 9);
  NONFAILING(*(uint32_t*)0x200000000478 = 0x7f);
  NONFAILING(*(uint32_t*)0x20000000047c = 8);
  NONFAILING(*(uint32_t*)0x200000000480 = 6);
  NONFAILING(*(uint32_t*)0x200000000484 = 8);
  NONFAILING(*(uint32_t*)0x200000000488 = 0x10001);
  NONFAILING(*(uint32_t*)0x20000000048c = 0xfffffff5);
  NONFAILING(*(uint32_t*)0x200000000490 = 0);
  NONFAILING(*(uint32_t*)0x200000000494 = 0x80);
  NONFAILING(*(uint32_t*)0x200000000498 = 9);
  NONFAILING(*(uint32_t*)0x20000000049c = 0x800007);
  NONFAILING(*(uint32_t*)0x2000000004a0 = 0x20006);
  NONFAILING(*(uint32_t*)0x2000000004a4 = 0);
  NONFAILING(*(uint32_t*)0x2000000004a8 = 2);
  NONFAILING(*(uint32_t*)0x2000000004ac = 0xe07);
  NONFAILING(*(uint32_t*)0x2000000004b0 = 0x388d);
  NONFAILING(*(uint32_t*)0x2000000004b4 = 0);
  NONFAILING(*(uint32_t*)0x2000000004b8 = 3);
  NONFAILING(*(uint32_t*)0x2000000004bc = 4);
  NONFAILING(*(uint32_t*)0x2000000004c0 = 3);
  NONFAILING(*(uint32_t*)0x2000000004c4 = 0x40);
  NONFAILING(*(uint32_t*)0x2000000004c8 = 0x80000001);
  NONFAILING(*(uint32_t*)0x2000000004cc = -1);
  NONFAILING(*(uint32_t*)0x2000000004d0 = 5);
  NONFAILING(*(uint32_t*)0x2000000004d4 = 0xed);
  NONFAILING(*(uint32_t*)0x2000000004d8 = 0x80000000);
  NONFAILING(*(uint32_t*)0x2000000004dc = 0xc);
  NONFAILING(*(uint32_t*)0x2000000004e0 = 0x7f);
  NONFAILING(*(uint32_t*)0x2000000004e4 = 0x296);
  NONFAILING(*(uint32_t*)0x2000000004e8 = 2);
  NONFAILING(*(uint32_t*)0x2000000004ec = 0xe6);
  NONFAILING(*(uint32_t*)0x2000000004f0 = 0x7fffffff);
  NONFAILING(*(uint32_t*)0x2000000004f4 = 5);
  NONFAILING(*(uint32_t*)0x2000000004f8 = 0xc2b0);
  NONFAILING(*(uint32_t*)0x2000000004fc = 0xa1);
  syscall(SYS_ioctl, /*fd=*/r[0], /*cmd=*/0xc1c06d00ul,
          /*arg=*/0x200000000340ul);
}
int main(void)
{
  syscall(SYS_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x1012ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  install_segv_handler();
  use_temporary_dir();
  do_sandbox_none();
  return 0;
}