// https://syzkaller.appspot.com/bug?id=5735d842f7ea3ed9220aca64952ac4aba7ba741c
// autogenerated by syzkaller (http://github.com/google/syzkaller)

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

#define BITMASK_LEN(type, bf_len) (type)((1ull << (bf_len)) - 1)

#define BITMASK_LEN_OFF(type, bf_off, bf_len)                                  \
  (type)(BITMASK_LEN(type, (bf_len)) << (bf_off))

#define STORE_BY_BITMASK(type, addr, val, bf_off, bf_len)                      \
  if ((bf_off) == 0 && (bf_len) == 0) {                                        \
    *(type*)(addr) = (type)(val);                                              \
  } else {                                                                     \
    type new_val = *(type*)(addr);                                             \
    new_val &= ~BITMASK_LEN_OFF(type, (bf_off), (bf_len));                     \
    new_val |= ((type)(val)&BITMASK_LEN(type, (bf_len))) << (bf_off);          \
    *(type*)(addr) = new_val;                                                  \
  }

static uintptr_t syz_open_procfs(uintptr_t a0, uintptr_t a1)
{

  char buf[128];
  memset(buf, 0, sizeof(buf));
  if (a0 == 0) {
    snprintf(buf, sizeof(buf), "/proc/self/%s", (char*)a1);
  } else if (a0 == (uintptr_t)-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;
}

static void execute_one();
extern unsigned long long procid;

void loop()
{
  while (1) {
    execute_one();
  }
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};
void execute_one()
{
  long res = 0;
  *(uint32_t*)0x2002ef88 = 1;
  *(uint32_t*)0x2002ef8c = 0x78;
  *(uint8_t*)0x2002ef90 = 0;
  *(uint8_t*)0x2002ef91 = 0;
  *(uint8_t*)0x2002ef92 = 0;
  *(uint8_t*)0x2002ef93 = 0;
  *(uint32_t*)0x2002ef94 = 0;
  *(uint64_t*)0x2002ef98 = 0;
  *(uint64_t*)0x2002efa0 = 0;
  *(uint64_t*)0x2002efa8 = 0;
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 0, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 1, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 2, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 3, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 4, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 3, 5, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 6, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 7, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 8, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 9, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 10, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 11, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 12, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 13, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 14, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 15, 2);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 17, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 18, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 19, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 20, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 21, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 22, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 23, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 24, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 25, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 26, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 27, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 28, 1);
  STORE_BY_BITMASK(uint64_t, 0x2002efb0, 0, 29, 35);
  *(uint32_t*)0x2002efb8 = 0;
  *(uint32_t*)0x2002efbc = 0;
  *(uint64_t*)0x2002efc0 = 0x20000000;
  *(uint64_t*)0x2002efc8 = 0;
  *(uint64_t*)0x2002efd0 = 0;
  *(uint64_t*)0x2002efd8 = 0;
  *(uint32_t*)0x2002efe0 = 0;
  *(uint32_t*)0x2002efe4 = 0;
  *(uint64_t*)0x2002efe8 = 0;
  *(uint32_t*)0x2002eff0 = 0;
  *(uint16_t*)0x2002eff4 = 0;
  *(uint16_t*)0x2002eff6 = 0;
  syscall(__NR_perf_event_open, 0x2002ef88, 0, 0, -1, 0);
  memcpy((void*)0x2060c000, "oom_score_adj", 14);
  res = syz_open_procfs(0, 0x2060c000);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x20000280, "loginuid", 9);
  res = syz_open_procfs(0, 0x20000280);
  if (res != -1)
    r[1] = res;
  *(uint64_t*)0x20000000 = 0;
  syscall(__NR_sendfile, r[0], r[1], 0x20000000, 9);
}

int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  for (;;) {
    loop();
  }
}