// https://syzkaller.appspot.com/bug?id=59ea4894db2108f7a82c7675e59d477bb2d6f0a6
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <fcntl.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <unistd.h>

#ifndef __NR_bpf
#define __NR_bpf 321
#endif

#define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off))
#define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len)               \
  *(type*)(addr) =                                                             \
      htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) |           \
            (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len))))

static long syz_open_dev(volatile long a0, volatile long a1, volatile long a2)
{
  if (a0 == 0xc || a0 == 0xb) {
    char buf[128];
    sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1,
            (uint8_t)a2);
    return open(buf, O_RDWR, 0);
  } else {
    char buf[1024];
    char* hash;
    strncpy(buf, (char*)a0, sizeof(buf) - 1);
    buf[sizeof(buf) - 1] = 0;
    while ((hash = strchr(buf, '#'))) {
      *hash = '0' + (char)(a1 % 10);
      a1 /= 10;
    }
    return open(buf, a2, 0);
  }
}

static long syz_open_procfs(volatile long a0, volatile long a1)
{
  char buf[128];
  memset(buf, 0, sizeof(buf));
  if (a0 == 0) {
    snprintf(buf, sizeof(buf), "/proc/self/%s", (char*)a1);
  } else if (a0 == -1) {
    snprintf(buf, sizeof(buf), "/proc/thread-self/%s", (char*)a1);
  } else {
    snprintf(buf, sizeof(buf), "/proc/self/task/%d/%s", (int)a0, (char*)a1);
  }
  int fd = open(buf, O_RDWR);
  if (fd == -1)
    fd = open(buf, O_RDONLY);
  return fd;
}

uint64_t r[8] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff};

int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  memcpy((void*)0x20000000, "/dev/kvm\000", 9);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x20000000ul,
                /*flags=*/0ul, /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xae01, /*type=*/0ul);
  memcpy((void*)0x20000000, "ns\000", 3);
  res = -1;
  res = syz_open_procfs(/*pid=*/0, /*file=*/0x20000000);
  if (res != -1)
    r[1] = res;
  memcpy((void*)0x20000280, "./cgroup\000", 9);
  syscall(__NR_openat, /*fd=*/r[1], /*file=*/0x20000280ul,
          /*flags=O_CREAT*/ 0x40ul, /*mode=*/0ul);
  memcpy((void*)0x20000080, "/dev/usbmon#\000", 13);
  syz_open_dev(/*dev=*/0x20000080, /*id=*/0, /*flags=*/0);
  memcpy((void*)0x20000080, "/dev/kvm\000", 9);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x20000080ul,
                /*flags=*/0ul, /*mode=*/0ul);
  if (res != -1)
    r[2] = res;
  res = syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0xae01, /*type=*/0ul);
  if (res != -1)
    r[3] = res;
  memcpy((void*)0x20000000, "/dev/kvm\000", 9);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x20000000ul,
                /*flags=*/0ul, /*mode=*/0ul);
  if (res != -1)
    r[4] = res;
  res = syscall(__NR_ioctl, /*fd=*/r[4], /*cmd=*/0xae01, /*type=*/0ul);
  if (res != -1)
    r[5] = res;
  *(uint32_t*)0x20000240 = 0;
  *(uint32_t*)0x20000244 = 3;
  *(uint64_t*)0x20000248 = 0x20000040;
  *(uint8_t*)0x20000040 = 0x18;
  STORE_BY_BITMASK(uint8_t, , 0x20000041, 0, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x20000041, 0, 4, 4);
  *(uint16_t*)0x20000042 = 0;
  *(uint32_t*)0x20000044 = 0;
  *(uint8_t*)0x20000048 = 0;
  *(uint8_t*)0x20000049 = 0;
  *(uint16_t*)0x2000004a = 0;
  *(uint32_t*)0x2000004c = 0xfffffffe;
  *(uint8_t*)0x20000050 = 0x95;
  *(uint8_t*)0x20000051 = 0;
  *(uint16_t*)0x20000052 = 0;
  *(uint32_t*)0x20000054 = 0;
  *(uint64_t*)0x20000250 = 0;
  *(uint32_t*)0x20000258 = 0;
  *(uint32_t*)0x2000025c = 0;
  *(uint64_t*)0x20000260 = 0;
  *(uint32_t*)0x20000268 = 0;
  *(uint32_t*)0x2000026c = 0;
  memset((void*)0x20000270, 0, 16);
  *(uint32_t*)0x20000280 = 0;
  *(uint32_t*)0x20000284 = 0;
  *(uint32_t*)0x20000288 = -1;
  *(uint32_t*)0x2000028c = 8;
  *(uint64_t*)0x20000290 = 0;
  *(uint32_t*)0x20000298 = 0;
  *(uint32_t*)0x2000029c = 0x10;
  *(uint64_t*)0x200002a0 = 0;
  *(uint32_t*)0x200002a8 = 0;
  *(uint32_t*)0x200002ac = 0;
  *(uint32_t*)0x200002b0 = 0;
  *(uint32_t*)0x200002b4 = 0;
  *(uint64_t*)0x200002b8 = 0;
  *(uint64_t*)0x200002c0 = 0;
  *(uint32_t*)0x200002c8 = 0x10;
  *(uint32_t*)0x200002cc = 0;
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000240ul, /*size=*/0x90ul);
  res = syscall(__NR_ioctl, /*fd=*/r[5], /*cmd=*/0xae41, /*id=*/0ul);
  if (res != -1)
    r[6] = res;
  res = syscall(__NR_dup, /*oldfd=*/r[6]);
  if (res != -1)
    r[7] = res;
  *(uint16_t*)0x20000040 = r[3];
  syscall(__NR_ioctl, /*fd=*/r[7], /*cmd=*/0x4048aecb, /*arg=*/0x20000040ul);
  return 0;
}