// https://syzkaller.appspot.com/bug?id=00fadf9a6326e13098672b601d57f644cae380e9
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

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

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

#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 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 kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  for (int i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  write_file("/proc/self/oom_score_adj", "1000");
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5000) {
        continue;
      }
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  memcpy((void*)0x200000c0, "cgroup.controllers\000", 19);
  syscall(__NR_openat, -1, 0x200000c0ul, 0ul, 0ul);
  memcpy((void*)0x20000100, "/dev/net/tun\000", 13);
  res = syscall(__NR_openat, 0xffffffffffffff9cul, 0x20000100ul, 0x2081ul, 0ul);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x200000c0, "syzkaller1\000\000\000\000\000\000", 16);
  syscall(__NR_ioctl, r[0], 0x400454ca, 0x200000c0ul);
  res = syscall(__NR_socket, 2ul, 5ul, 0x84);
  if (res != -1)
    r[1] = res;
  memcpy((void*)0x20000640,
         "filter\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",
         32);
  *(uint32_t*)0x20000660 = 0xe;
  *(uint32_t*)0x20000664 = 4;
  *(uint32_t*)0x20000668 = 0x2f8;
  *(uint32_t*)0x2000066c = -1;
  *(uint32_t*)0x20000670 = 0;
  *(uint32_t*)0x20000674 = 0x1c8;
  *(uint32_t*)0x20000678 = 0x110;
  *(uint32_t*)0x2000067c = -1;
  *(uint32_t*)0x20000680 = -1;
  *(uint32_t*)0x20000684 = 0x260;
  *(uint32_t*)0x20000688 = 0x260;
  *(uint32_t*)0x2000068c = 0x260;
  *(uint32_t*)0x20000690 = -1;
  *(uint32_t*)0x20000694 = 4;
  *(uint64_t*)0x20000698 = 0;
  memset((void*)0x200006a0, 0, 84);
  *(uint32_t*)0x200006f4 = 0;
  *(uint16_t*)0x200006f8 = 0xd0;
  *(uint16_t*)0x200006fa = 0x110;
  *(uint32_t*)0x200006fc = 0;
  *(uint64_t*)0x20000700 = 0;
  *(uint64_t*)0x20000708 = 0;
  *(uint16_t*)0x20000710 = 0x28;
  memcpy((void*)0x20000712,
         "addrtype\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x2000072f = 1;
  *(uint16_t*)0x20000730 = 0;
  *(uint16_t*)0x20000732 = 0;
  *(uint32_t*)0x20000734 = 0;
  *(uint16_t*)0x20000738 = 0x38;
  memcpy((void*)0x2000073a,
         "time\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",
         29);
  *(uint8_t*)0x20000757 = 0;
  *(uint32_t*)0x20000758 = 0;
  *(uint32_t*)0x2000075c = 0;
  *(uint32_t*)0x20000760 = 0;
  *(uint32_t*)0x20000764 = 0;
  *(uint32_t*)0x20000768 = 0;
  *(uint8_t*)0x2000076c = 0;
  *(uint8_t*)0x2000076d = 3;
  *(uint16_t*)0x20000770 = 0x40;
  memcpy((void*)0x20000772,
         "ERROR\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x2000078f = 0;
  memcpy((void*)0x20000790,
         "\x56\xda\xb7\xbb\xe8\x14\xcb\x82\xf1\x32\xe1\x47\x33\x1c\xcf\x31\x1a"
         "\xc0\x7e\x9c\x1e\x4a\xa1\x97\x5b\x40\x78\x7b\xdf\xfa",
         30);
  memset((void*)0x200007b0, 0, 84);
  *(uint32_t*)0x20000804 = 0;
  *(uint16_t*)0x20000808 = 0x70;
  *(uint16_t*)0x2000080a = 0xb8;
  *(uint32_t*)0x2000080c = 0;
  *(uint64_t*)0x20000810 = 0;
  *(uint64_t*)0x20000818 = 0;
  *(uint16_t*)0x20000820 = 0x48;
  memcpy((void*)0x20000822,
         "TEE\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",
         29);
  *(uint8_t*)0x2000083f = 1;
  memset((void*)0x20000840, 0, 10);
  memset((void*)0x2000084a, 255, 2);
  *(uint8_t*)0x2000084c = 0xac;
  *(uint8_t*)0x2000084d = 0x14;
  *(uint8_t*)0x2000084e = 0x14;
  *(uint8_t*)0x2000084f = 0xbb;
  memcpy((void*)0x20000850, "bond0\000\000\000\000\000\000\000\000\000\000\000",
         16);
  *(uint64_t*)0x20000860 = 0;
  memset((void*)0x20000868, 0, 84);
  *(uint32_t*)0x200008bc = 0;
  *(uint16_t*)0x200008c0 = 0x70;
  *(uint16_t*)0x200008c2 = 0x98;
  *(uint32_t*)0x200008c4 = 0;
  *(uint64_t*)0x200008c8 = 0;
  *(uint64_t*)0x200008d0 = 0;
  *(uint16_t*)0x200008d8 = 0x28;
  memcpy((void*)0x200008da,
         "REJECT\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x200008f7 = 0;
  *(uint32_t*)0x200008f8 = 0;
  memset((void*)0x20000900, 0, 84);
  *(uint32_t*)0x20000954 = 0;
  *(uint16_t*)0x20000958 = 0x70;
  *(uint16_t*)0x2000095a = 0x98;
  *(uint32_t*)0x2000095c = 0;
  *(uint64_t*)0x20000960 = 0;
  *(uint64_t*)0x20000968 = 0;
  *(uint16_t*)0x20000970 = 0x28;
  memset((void*)0x20000972, 0, 29);
  *(uint8_t*)0x2000098f = 0;
  *(uint32_t*)0x20000990 = 0xfffffffe;
  syscall(__NR_setsockopt, r[1], 0, 0x40, 0x20000640ul, 0x358ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0xc);
  if (res != -1)
    r[2] = res;
  *(uint64_t*)0x20000280 = 0;
  *(uint32_t*)0x20000288 = 0;
  *(uint64_t*)0x20000290 = 0x20000240;
  *(uint64_t*)0x20000240 = 0x20000200;
  *(uint32_t*)0x20000200 = 0x34;
  *(uint8_t*)0x20000204 = 0;
  *(uint8_t*)0x20000205 = 0xb;
  *(uint16_t*)0x20000206 = 0x101;
  *(uint32_t*)0x20000208 = 0;
  *(uint32_t*)0x2000020c = 0;
  *(uint8_t*)0x20000210 = 7;
  *(uint8_t*)0x20000211 = 0;
  *(uint16_t*)0x20000212 = htobe16(0);
  *(uint16_t*)0x20000214 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x20000216, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000217, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000217, 0, 7, 1);
  *(uint32_t*)0x20000218 = htobe32(0);
  *(uint16_t*)0x2000021c = 0xe;
  *(uint16_t*)0x2000021e = 1;
  memcpy((void*)0x20000220, ",*]:+]\\:@\000", 10);
  *(uint16_t*)0x2000022c = 8;
  STORE_BY_BITMASK(uint16_t, , 0x2000022e, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000022f, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000022f, 0, 7, 1);
  *(uint32_t*)0x20000230 = htobe32(1);
  *(uint64_t*)0x20000248 = 0x34;
  *(uint64_t*)0x20000298 = 1;
  *(uint64_t*)0x200002a0 = 0;
  *(uint64_t*)0x200002a8 = 0;
  *(uint32_t*)0x200002b0 = 0;
  syscall(__NR_sendmsg, r[2], 0x20000280ul, 0ul);
}
int main(void)
{
  syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  loop();
  return 0;
}