// 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[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  memcpy((void*)0x20001740, "/dev/ppp\000", 9);
  res = syscall(__NR_openat, 0xffffffffffffff9cul, 0x20001740ul, 0ul, 0ul);
  if (res != -1)
    r[0] = res;
  *(uint32_t*)0x20000380 = 0;
  syscall(__NR_ioctl, r[0], 0xc004743e, 0x20000380ul);
  res = syscall(__NR_socket, 0xaul, 2ul, 0);
  if (res != -1)
    r[1] = res;
  res = syscall(__NR_socket, 0xaul, 2ul, 0x88);
  if (res != -1)
    r[2] = res;
  res = syscall(__NR_fcntl, r[2], 0ul, r[1]);
  if (res != -1)
    r[3] = res;
  memcpy((void*)0x200001c0,
         "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*)0x200001e0 = 0xe;
  *(uint32_t*)0x200001e4 = 4;
  *(uint32_t*)0x200001e8 = 0x3b0;
  *(uint32_t*)0x200001ec = -1;
  *(uint32_t*)0x200001f0 = 0;
  *(uint32_t*)0x200001f4 = 0x1e8;
  *(uint32_t*)0x200001f8 = 0x1e8;
  *(uint32_t*)0x200001fc = -1;
  *(uint32_t*)0x20000200 = -1;
  *(uint32_t*)0x20000204 = 0x2e0;
  *(uint32_t*)0x20000208 = 0x2e0;
  *(uint32_t*)0x2000020c = 0x2e0;
  *(uint32_t*)0x20000210 = -1;
  *(uint32_t*)0x20000214 = 4;
  *(uint64_t*)0x20000218 = 0;
  memset((void*)0x20000220, 0, 136);
  *(uint32_t*)0x200002a8 = 0;
  *(uint16_t*)0x200002ac = 0xa8;
  *(uint16_t*)0x200002ae = 0xf0;
  *(uint32_t*)0x200002b0 = 0;
  *(uint64_t*)0x200002b8 = 0;
  *(uint64_t*)0x200002c0 = 0;
  *(uint16_t*)0x200002c8 = 0x48;
  memcpy((void*)0x200002ca,
         "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*)0x200002e7 = 1;
  *(uint8_t*)0x200002e8 = -1;
  *(uint8_t*)0x200002e9 = 1;
  memset((void*)0x200002ea, 0, 13);
  *(uint8_t*)0x200002f7 = 1;
  memcpy((void*)0x200002f8, "veth1_to_bond\000\000\000", 16);
  *(uint64_t*)0x20000308 = 0;
  memset((void*)0x20000310, 0, 136);
  *(uint32_t*)0x20000398 = 0;
  *(uint16_t*)0x2000039c = 0xd0;
  *(uint16_t*)0x2000039e = 0xf8;
  *(uint32_t*)0x200003a0 = 0;
  *(uint64_t*)0x200003a8 = 0;
  *(uint64_t*)0x200003b0 = 0;
  *(uint16_t*)0x200003b8 = 0x28;
  memcpy((void*)0x200003ba,
         "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*)0x200003d7 = 1;
  *(uint16_t*)0x200003d8 = 0;
  *(uint16_t*)0x200003da = 0;
  *(uint32_t*)0x200003dc = 0;
  *(uint16_t*)0x200003e0 = 0x28;
  memcpy((void*)0x200003e2,
         "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*)0x200003ff = 0;
  *(uint32_t*)0x20000400 = 0;
  memset((void*)0x20000408, 0, 16);
  *(uint8_t*)0x20000418 = -1;
  *(uint8_t*)0x20000419 = 1;
  memset((void*)0x2000041a, 0, 13);
  *(uint8_t*)0x20000427 = 1;
  *(uint32_t*)0x20000428 = htobe32(0);
  *(uint32_t*)0x2000042c = htobe32(0);
  *(uint32_t*)0x20000430 = htobe32(0);
  *(uint32_t*)0x20000434 = htobe32(0);
  *(uint32_t*)0x20000438 = htobe32(0);
  *(uint32_t*)0x2000043c = htobe32(0);
  *(uint32_t*)0x20000440 = htobe32(0);
  *(uint32_t*)0x20000444 = htobe32(0);
  memcpy((void*)0x20000448, "vlan0\000\000\000\000\000\000\000\000\000\000\000",
         16);
  memcpy((void*)0x20000458, "vlan0\000\000\000\000\000\000\000\000\000\000\000",
         16);
  *(uint8_t*)0x20000468 = 0;
  *(uint8_t*)0x20000478 = 0;
  *(uint16_t*)0x20000488 = 0;
  *(uint8_t*)0x2000048a = 0;
  *(uint8_t*)0x2000048b = 0;
  *(uint8_t*)0x2000048c = 0;
  *(uint32_t*)0x20000490 = 0;
  *(uint16_t*)0x20000494 = 0xd0;
  *(uint16_t*)0x20000496 = 0xf8;
  *(uint32_t*)0x20000498 = 0;
  *(uint64_t*)0x200004a0 = 0;
  *(uint64_t*)0x200004a8 = 0;
  *(uint16_t*)0x200004b0 = 0x28;
  memcpy((void*)0x200004b2,
         "cpu\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*)0x200004cf = 0;
  *(uint32_t*)0x200004d0 = 0;
  *(uint32_t*)0x200004d4 = 0;
  *(uint16_t*)0x200004d8 = 0x28;
  memcpy((void*)0x200004da,
         "NFQUEUE\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*)0x200004f7 = 3;
  *(uint16_t*)0x200004f8 = 0;
  *(uint16_t*)0x200004fa = 3;
  *(uint16_t*)0x200004fc = 0;
  memset((void*)0x20000500, 0, 136);
  *(uint32_t*)0x20000588 = 0;
  *(uint16_t*)0x2000058c = 0xa8;
  *(uint16_t*)0x2000058e = 0xd0;
  *(uint32_t*)0x20000590 = 0;
  *(uint64_t*)0x20000598 = 0;
  *(uint64_t*)0x200005a0 = 0;
  *(uint16_t*)0x200005a8 = 0x28;
  memset((void*)0x200005aa, 0, 29);
  *(uint8_t*)0x200005c7 = 0;
  *(uint32_t*)0x200005c8 = 0xfffffffe;
  syscall(__NR_setsockopt, r[3], 0x29, 0x40, 0x200001c0ul, 0x410ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0xc);
  if (res != -1)
    r[4] = res;
  *(uint64_t*)0x20000380 = 0;
  *(uint32_t*)0x20000388 = 0;
  *(uint64_t*)0x20000390 = 0x20000340;
  *(uint64_t*)0x20000340 = 0x200002c0;
  *(uint32_t*)0x200002c0 = 0x2c;
  *(uint8_t*)0x200002c4 = 0;
  *(uint8_t*)0x200002c5 = 0xb;
  *(uint16_t*)0x200002c6 = 0x101;
  *(uint32_t*)0x200002c8 = 0;
  *(uint32_t*)0x200002cc = 0;
  *(uint8_t*)0x200002d0 = 0xa;
  *(uint8_t*)0x200002d1 = 0;
  *(uint16_t*)0x200002d2 = htobe16(0);
  *(uint16_t*)0x200002d4 = 8;
  *(uint16_t*)0x200002d6 = 1;
  memcpy((void*)0x200002d8, "bpf\000", 4);
  *(uint16_t*)0x200002dc = 8;
  STORE_BY_BITMASK(uint16_t, , 0x200002de, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200002df, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200002df, 0, 7, 1);
  *(uint32_t*)0x200002e0 = htobe32(0);
  *(uint16_t*)0x200002e4 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x200002e6, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200002e7, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200002e7, 0, 7, 1);
  *(uint32_t*)0x200002e8 = htobe32(0);
  *(uint64_t*)0x20000348 = 0x2c;
  *(uint64_t*)0x20000398 = 1;
  *(uint64_t*)0x200003a0 = 0;
  *(uint64_t*)0x200003a8 = 0;
  *(uint32_t*)0x200003b0 = 0;
  syscall(__NR_sendmsg, r[4], 0x20000380ul, 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;
}