// https://syzkaller.appspot.com/bug?id=ab136f1e51bcdf545b941b75c5d4215c6c2e3353
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <sched.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

#include <linux/capability.h>

static bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

static void setup_common()
{
  if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) {
  }
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  setsid();
  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = (200 << 20);
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 32 << 20;
  setrlimit(RLIMIT_MEMLOCK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 136 << 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);
  if (unshare(CLONE_NEWNS)) {
  }
  if (unshare(CLONE_NEWIPC)) {
  }
  if (unshare(0x02000000)) {
  }
  if (unshare(CLONE_NEWUTS)) {
  }
  if (unshare(CLONE_SYSVSEM)) {
  }
  typedef struct {
    const char* name;
    const char* value;
  } sysctl_t;
  static const sysctl_t sysctls[] = {
      {"/proc/sys/kernel/shmmax", "16777216"},
      {"/proc/sys/kernel/shmall", "536870912"},
      {"/proc/sys/kernel/shmmni", "1024"},
      {"/proc/sys/kernel/msgmax", "8192"},
      {"/proc/sys/kernel/msgmni", "1024"},
      {"/proc/sys/kernel/msgmnb", "1024"},
      {"/proc/sys/kernel/sem", "1024 1048576 500 1024"},
  };
  unsigned i;
  for (i = 0; i < sizeof(sysctls) / sizeof(sysctls[0]); i++)
    write_file(sysctls[i].name, sysctls[i].value);
}

int wait_for_loop(int pid)
{
  if (pid < 0)
    exit(1);
  int status = 0;
  while (waitpid(-1, &status, __WALL) != pid) {
  }
  return WEXITSTATUS(status);
}

static void drop_caps(void)
{
  struct __user_cap_header_struct cap_hdr = {};
  struct __user_cap_data_struct cap_data[2] = {};
  cap_hdr.version = _LINUX_CAPABILITY_VERSION_3;
  cap_hdr.pid = getpid();
  if (syscall(SYS_capget, &cap_hdr, &cap_data))
    exit(1);
  const int drop = (1 << CAP_SYS_PTRACE) | (1 << CAP_SYS_NICE);
  cap_data[0].effective &= ~drop;
  cap_data[0].permitted &= ~drop;
  cap_data[0].inheritable &= ~drop;
  if (syscall(SYS_capset, &cap_hdr, &cap_data))
    exit(1);
}

static int do_sandbox_none(void)
{
  if (unshare(CLONE_NEWPID)) {
  }
  int pid = fork();
  if (pid != 0)
    return wait_for_loop(pid);
  setup_common();
  sandbox_common();
  drop_caps();
  if (unshare(CLONE_NEWNET)) {
  }
  loop();
  exit(1);
}

#ifndef __NR_dup
#define __NR_dup 41
#endif
#ifndef __NR_ioctl
#define __NR_ioctl 54
#endif
#ifndef __NR_mmap
#define __NR_mmap 192
#endif
#ifndef __NR_openat
#define __NR_openat 295
#endif
#ifndef __NR_write
#define __NR_write 4
#endif
#undef __NR_mmap
#define __NR_mmap __NR_mmap2

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void loop(void)
{
  intptr_t res = 0;
  memcpy((void*)0x200000c0, "/dev/uinput\000", 12);
  res = syscall(__NR_openat, 0xffffff9c, 0x200000c0, 0x802, 0);
  if (res != -1)
    r[0] = res;
  syscall(__NR_ioctl, (intptr_t)r[0], 0x40045567, 0x2f);
  syscall(__NR_ioctl, (intptr_t)r[0], 0x40045564, 3);
  res = syscall(__NR_dup, (intptr_t)r[0]);
  if (res != -1)
    r[1] = res;
  memcpy((void*)0x20000500,
         "syz1\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000",
         80);
  *(uint16_t*)0x20000550 = 0;
  *(uint16_t*)0x20000552 = 0;
  *(uint16_t*)0x20000554 = 0;
  *(uint16_t*)0x20000556 = 0;
  *(uint32_t*)0x20000558 = 0;
  *(uint32_t*)0x2000055c = 0;
  *(uint32_t*)0x20000560 = 0;
  *(uint32_t*)0x20000564 = 0;
  *(uint32_t*)0x20000568 = 0;
  *(uint32_t*)0x2000056c = 0;
  *(uint32_t*)0x20000570 = 0;
  *(uint32_t*)0x20000574 = 0;
  *(uint32_t*)0x20000578 = 0;
  *(uint32_t*)0x2000057c = 0;
  *(uint32_t*)0x20000580 = 0;
  *(uint32_t*)0x20000584 = 0;
  *(uint32_t*)0x20000588 = 0;
  *(uint32_t*)0x2000058c = 0;
  *(uint32_t*)0x20000590 = 0;
  *(uint32_t*)0x20000594 = 0;
  *(uint32_t*)0x20000598 = 0;
  *(uint32_t*)0x2000059c = 0;
  *(uint32_t*)0x200005a0 = 0;
  *(uint32_t*)0x200005a4 = 0;
  *(uint32_t*)0x200005a8 = 0;
  *(uint32_t*)0x200005ac = 0;
  *(uint32_t*)0x200005b0 = 0;
  *(uint32_t*)0x200005b4 = 0;
  *(uint32_t*)0x200005b8 = 0;
  *(uint32_t*)0x200005bc = 0;
  *(uint32_t*)0x200005c0 = 0;
  *(uint32_t*)0x200005c4 = 0;
  *(uint32_t*)0x200005c8 = 0;
  *(uint32_t*)0x200005cc = 0;
  *(uint32_t*)0x200005d0 = 0;
  *(uint32_t*)0x200005d4 = 0;
  *(uint32_t*)0x200005d8 = 0;
  *(uint32_t*)0x200005dc = 0;
  *(uint32_t*)0x200005e0 = 0;
  *(uint32_t*)0x200005e4 = 0;
  *(uint32_t*)0x200005e8 = 0;
  *(uint32_t*)0x200005ec = 0;
  *(uint32_t*)0x200005f0 = 0;
  *(uint32_t*)0x200005f4 = 0;
  *(uint32_t*)0x200005f8 = 0;
  *(uint32_t*)0x200005fc = 0;
  *(uint32_t*)0x20000600 = 0;
  *(uint32_t*)0x20000604 = 0;
  *(uint32_t*)0x20000608 = 0;
  *(uint32_t*)0x2000060c = 0;
  *(uint32_t*)0x20000610 = 0;
  *(uint32_t*)0x20000614 = 0;
  *(uint32_t*)0x20000618 = 0x4008001;
  *(uint32_t*)0x2000061c = 0;
  *(uint32_t*)0x20000620 = 0;
  *(uint32_t*)0x20000624 = 0;
  *(uint32_t*)0x20000628 = 0;
  *(uint32_t*)0x2000062c = 0;
  *(uint32_t*)0x20000630 = 0;
  *(uint32_t*)0x20000634 = 0;
  *(uint32_t*)0x20000638 = 0;
  *(uint32_t*)0x2000063c = 0;
  *(uint32_t*)0x20000640 = 0;
  *(uint32_t*)0x20000644 = 0;
  *(uint32_t*)0x20000648 = 0;
  *(uint32_t*)0x2000064c = 0;
  *(uint32_t*)0x20000650 = 0;
  *(uint32_t*)0x20000654 = 0;
  *(uint32_t*)0x20000658 = 0;
  *(uint32_t*)0x2000065c = 0;
  *(uint32_t*)0x20000660 = 0;
  *(uint32_t*)0x20000664 = 0;
  *(uint32_t*)0x20000668 = 0;
  *(uint32_t*)0x2000066c = 0;
  *(uint32_t*)0x20000670 = 0;
  *(uint32_t*)0x20000674 = 0;
  *(uint32_t*)0x20000678 = 0;
  *(uint32_t*)0x2000067c = 0;
  *(uint32_t*)0x20000680 = 0;
  *(uint32_t*)0x20000684 = 0;
  *(uint32_t*)0x20000688 = 0;
  *(uint32_t*)0x2000068c = 0;
  *(uint32_t*)0x20000690 = 0;
  *(uint32_t*)0x20000694 = 0;
  *(uint32_t*)0x20000698 = 0;
  *(uint32_t*)0x2000069c = 0;
  *(uint32_t*)0x200006a0 = 0;
  *(uint32_t*)0x200006a4 = 0;
  *(uint32_t*)0x200006a8 = 0;
  *(uint32_t*)0x200006ac = 0;
  *(uint32_t*)0x200006b0 = 0;
  *(uint32_t*)0x200006b4 = 0;
  *(uint32_t*)0x200006b8 = 0;
  *(uint32_t*)0x200006bc = 0;
  *(uint32_t*)0x200006c0 = 0;
  *(uint32_t*)0x200006c4 = 0;
  *(uint32_t*)0x200006c8 = 0;
  *(uint32_t*)0x200006cc = 0;
  *(uint32_t*)0x200006d0 = 0;
  *(uint32_t*)0x200006d4 = 0;
  *(uint32_t*)0x200006d8 = 0;
  *(uint32_t*)0x200006dc = 0;
  *(uint32_t*)0x200006e0 = 0;
  *(uint32_t*)0x200006e4 = 0;
  *(uint32_t*)0x200006e8 = 0;
  *(uint32_t*)0x200006ec = 0;
  *(uint32_t*)0x200006f0 = 0;
  *(uint32_t*)0x200006f4 = 0;
  *(uint32_t*)0x200006f8 = 0;
  *(uint32_t*)0x200006fc = 0;
  *(uint32_t*)0x20000700 = 0;
  *(uint32_t*)0x20000704 = 0;
  *(uint32_t*)0x20000708 = 0;
  *(uint32_t*)0x2000070c = 0;
  *(uint32_t*)0x20000710 = 0;
  *(uint32_t*)0x20000714 = 0;
  *(uint32_t*)0x20000718 = 0;
  *(uint32_t*)0x2000071c = 0;
  *(uint32_t*)0x20000720 = 0;
  *(uint32_t*)0x20000724 = 0;
  *(uint32_t*)0x20000728 = 0;
  *(uint32_t*)0x2000072c = 0;
  *(uint32_t*)0x20000730 = 0;
  *(uint32_t*)0x20000734 = 0;
  *(uint32_t*)0x20000738 = 0;
  *(uint32_t*)0x2000073c = 0;
  *(uint32_t*)0x20000740 = 0;
  *(uint32_t*)0x20000744 = 0;
  *(uint32_t*)0x20000748 = 0;
  *(uint32_t*)0x2000074c = 0;
  *(uint32_t*)0x20000750 = 0;
  *(uint32_t*)0x20000754 = 0;
  *(uint32_t*)0x20000758 = 0;
  *(uint32_t*)0x2000075c = 0;
  *(uint32_t*)0x20000760 = 0;
  *(uint32_t*)0x20000764 = 0;
  *(uint32_t*)0x20000768 = 0;
  *(uint32_t*)0x2000076c = 0;
  *(uint32_t*)0x20000770 = 0;
  *(uint32_t*)0x20000774 = 0;
  *(uint32_t*)0x20000778 = 0;
  *(uint32_t*)0x2000077c = 0;
  *(uint32_t*)0x20000780 = 0;
  *(uint32_t*)0x20000784 = 0;
  *(uint32_t*)0x20000788 = 0;
  *(uint32_t*)0x2000078c = 0;
  *(uint32_t*)0x20000790 = 0;
  *(uint32_t*)0x20000794 = 0;
  *(uint32_t*)0x20000798 = 0;
  *(uint32_t*)0x2000079c = 0;
  *(uint32_t*)0x200007a0 = 0;
  *(uint32_t*)0x200007a4 = 0;
  *(uint32_t*)0x200007a8 = 0;
  *(uint32_t*)0x200007ac = 0;
  *(uint32_t*)0x200007b0 = 0;
  *(uint32_t*)0x200007b4 = 0;
  *(uint32_t*)0x200007b8 = 0;
  *(uint32_t*)0x200007bc = 0;
  *(uint32_t*)0x200007c0 = 0;
  *(uint32_t*)0x200007c4 = 0;
  *(uint32_t*)0x200007c8 = 0;
  *(uint32_t*)0x200007cc = 0;
  *(uint32_t*)0x200007d0 = 0;
  *(uint32_t*)0x200007d4 = 0;
  *(uint32_t*)0x200007d8 = 0;
  *(uint32_t*)0x200007dc = 0;
  *(uint32_t*)0x200007e0 = 0;
  *(uint32_t*)0x200007e4 = 0;
  *(uint32_t*)0x200007e8 = 0;
  *(uint32_t*)0x200007ec = 0;
  *(uint32_t*)0x200007f0 = 0;
  *(uint32_t*)0x200007f4 = 0;
  *(uint32_t*)0x200007f8 = 0;
  *(uint32_t*)0x200007fc = 0;
  *(uint32_t*)0x20000800 = 0;
  *(uint32_t*)0x20000804 = 0;
  *(uint32_t*)0x20000808 = 0;
  *(uint32_t*)0x2000080c = 0;
  *(uint32_t*)0x20000810 = 0;
  *(uint32_t*)0x20000814 = 0;
  *(uint32_t*)0x20000818 = 0;
  *(uint32_t*)0x2000081c = 0;
  *(uint32_t*)0x20000820 = 0;
  *(uint32_t*)0x20000824 = 0;
  *(uint32_t*)0x20000828 = 0;
  *(uint32_t*)0x2000082c = 0;
  *(uint32_t*)0x20000830 = 0;
  *(uint32_t*)0x20000834 = 0;
  *(uint32_t*)0x20000838 = 0;
  *(uint32_t*)0x2000083c = 0;
  *(uint32_t*)0x20000840 = 0;
  *(uint32_t*)0x20000844 = 0;
  *(uint32_t*)0x20000848 = 0;
  *(uint32_t*)0x2000084c = 0;
  *(uint32_t*)0x20000850 = 0;
  *(uint32_t*)0x20000854 = 0;
  *(uint32_t*)0x20000858 = 0;
  *(uint32_t*)0x2000085c = 0;
  *(uint32_t*)0x20000860 = 0;
  *(uint32_t*)0x20000864 = 0;
  *(uint32_t*)0x20000868 = 0;
  *(uint32_t*)0x2000086c = 0;
  *(uint32_t*)0x20000870 = 0;
  *(uint32_t*)0x20000874 = 0;
  *(uint32_t*)0x20000878 = 0;
  *(uint32_t*)0x2000087c = 0;
  *(uint32_t*)0x20000880 = 0;
  *(uint32_t*)0x20000884 = 0;
  *(uint32_t*)0x20000888 = 0;
  *(uint32_t*)0x2000088c = 0;
  *(uint32_t*)0x20000890 = 0;
  *(uint32_t*)0x20000894 = 0;
  *(uint32_t*)0x20000898 = 0;
  *(uint32_t*)0x2000089c = 0;
  *(uint32_t*)0x200008a0 = 0;
  *(uint32_t*)0x200008a4 = 0;
  *(uint32_t*)0x200008a8 = 0;
  *(uint32_t*)0x200008ac = 0;
  *(uint32_t*)0x200008b0 = 0;
  *(uint32_t*)0x200008b4 = 0;
  *(uint32_t*)0x200008b8 = 0;
  *(uint32_t*)0x200008bc = 0;
  *(uint32_t*)0x200008c0 = 0;
  *(uint32_t*)0x200008c4 = 0;
  *(uint32_t*)0x200008c8 = 0;
  *(uint32_t*)0x200008cc = 0;
  *(uint32_t*)0x200008d0 = 0;
  *(uint32_t*)0x200008d4 = 0;
  *(uint32_t*)0x200008d8 = 0;
  *(uint32_t*)0x200008dc = 0;
  *(uint32_t*)0x200008e0 = 0;
  *(uint32_t*)0x200008e4 = 0;
  *(uint32_t*)0x200008e8 = 0;
  *(uint32_t*)0x200008ec = 0;
  *(uint32_t*)0x200008f0 = 0;
  *(uint32_t*)0x200008f4 = 0;
  *(uint32_t*)0x200008f8 = 0;
  *(uint32_t*)0x200008fc = 0;
  *(uint32_t*)0x20000900 = 0;
  *(uint32_t*)0x20000904 = 0;
  *(uint32_t*)0x20000908 = 0;
  *(uint32_t*)0x2000090c = 0;
  *(uint32_t*)0x20000910 = 0;
  *(uint32_t*)0x20000914 = 0;
  *(uint32_t*)0x20000918 = 0;
  *(uint32_t*)0x2000091c = 0;
  *(uint32_t*)0x20000920 = 0;
  *(uint32_t*)0x20000924 = 0;
  *(uint32_t*)0x20000928 = 0;
  *(uint32_t*)0x2000092c = 0;
  *(uint32_t*)0x20000930 = 0;
  *(uint32_t*)0x20000934 = 0;
  *(uint32_t*)0x20000938 = 0;
  *(uint32_t*)0x2000093c = 0;
  *(uint32_t*)0x20000940 = 0;
  *(uint32_t*)0x20000944 = 0;
  *(uint32_t*)0x20000948 = 0;
  *(uint32_t*)0x2000094c = 0;
  *(uint32_t*)0x20000950 = 0;
  *(uint32_t*)0x20000954 = 0;
  *(uint32_t*)0x20000958 = 0;
  syscall(__NR_write, (intptr_t)r[1], 0x20000500, 0x45c);
  syscall(__NR_ioctl, (intptr_t)r[1], 0x5501, 0);
}
int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  do_sandbox_none();
  return 0;
}