// https://syzkaller.appspot.com/bug?id=779a64ccaefd969d5d9bc72a7c4fe39598d53884
// 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;
  res = syscall(__NR_socket, 0x10ul, 3ul, 0xc);
  if (res != -1)
    r[0] = 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[0], 0x20000380ul, 0ul);
  res = syscall(__NR_socket, 2ul, 2ul, 0);
  if (res != -1)
    r[1] = res;
  memcpy((void*)0x20000100,
         "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*)0x20000120 = 0xe;
  *(uint32_t*)0x20000124 = 4;
  *(uint32_t*)0x20000128 = 0x330;
  *(uint32_t*)0x2000012c = -1;
  *(uint32_t*)0x20000130 = 0x188;
  *(uint32_t*)0x20000134 = 0x98;
  *(uint32_t*)0x20000138 = 0;
  *(uint32_t*)0x2000013c = -1;
  *(uint32_t*)0x20000140 = -1;
  *(uint32_t*)0x20000144 = 0x298;
  *(uint32_t*)0x20000148 = 0x298;
  *(uint32_t*)0x2000014c = 0x298;
  *(uint32_t*)0x20000150 = -1;
  *(uint32_t*)0x20000154 = 4;
  *(uint64_t*)0x20000158 = 0;
  *(uint8_t*)0x20000160 = 0xac;
  *(uint8_t*)0x20000161 = 0x14;
  *(uint8_t*)0x20000162 = 0x14;
  *(uint8_t*)0x20000163 = 0;
  *(uint8_t*)0x20000164 = 0xac;
  *(uint8_t*)0x20000165 = 0x1e;
  *(uint8_t*)0x20000166 = 0;
  *(uint8_t*)0x20000167 = 1;
  *(uint32_t*)0x20000168 = htobe32(0);
  *(uint32_t*)0x2000016c = htobe32(0);
  memcpy((void*)0x20000170, "veth1_macvtap\000\000\000", 16);
  memcpy((void*)0x20000180, "veth0_virt_wifi\000", 16);
  *(uint8_t*)0x20000190 = 0;
  *(uint8_t*)0x200001a0 = 0;
  *(uint16_t*)0x200001b0 = 0;
  *(uint8_t*)0x200001b2 = 0;
  *(uint8_t*)0x200001b3 = 0;
  *(uint32_t*)0x200001b4 = 0;
  *(uint16_t*)0x200001b8 = 0x70;
  *(uint16_t*)0x200001ba = 0x98;
  *(uint32_t*)0x200001bc = 0;
  *(uint64_t*)0x200001c0 = 0;
  *(uint64_t*)0x200001c8 = 0;
  *(uint16_t*)0x200001d0 = 0x28;
  memset((void*)0x200001d2, 0, 29);
  *(uint8_t*)0x200001ef = 0;
  *(uint32_t*)0x200001f0 = 0x188;
  *(uint32_t*)0x200001f8 = htobe32(0);
  *(uint32_t*)0x200001fc = htobe32(0);
  *(uint32_t*)0x20000200 = htobe32(0);
  *(uint32_t*)0x20000204 = htobe32(0);
  memcpy((void*)0x20000208, "team_slave_0\000\000\000\000", 16);
  memcpy((void*)0x20000218, "veth0_to_hsr\000\000\000\000", 16);
  *(uint8_t*)0x20000228 = 0;
  *(uint8_t*)0x20000238 = 0;
  *(uint16_t*)0x20000248 = 0;
  *(uint8_t*)0x2000024a = 0;
  *(uint8_t*)0x2000024b = 0;
  *(uint32_t*)0x2000024c = 0;
  *(uint16_t*)0x20000250 = 0xc8;
  *(uint16_t*)0x20000252 = 0xf0;
  *(uint32_t*)0x20000254 = 0;
  *(uint64_t*)0x20000258 = 0;
  *(uint64_t*)0x20000260 = 0;
  *(uint16_t*)0x20000268 = 0x28;
  memcpy((void*)0x2000026a,
         "ttl\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*)0x20000287 = 0;
  *(uint8_t*)0x20000288 = 0;
  *(uint8_t*)0x20000289 = 0;
  *(uint16_t*)0x20000290 = 0x30;
  memcpy((void*)0x20000292,
         "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*)0x200002af = 0;
  *(uint16_t*)0x200002b0 = 0;
  *(uint16_t*)0x200002b2 = 0;
  *(uint32_t*)0x200002b4 = 0;
  *(uint32_t*)0x200002b8 = 0;
  *(uint16_t*)0x200002c0 = 0x28;
  memcpy((void*)0x200002c2,
         "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*)0x200002df = 0;
  *(uint32_t*)0x200002e0 = 0;
  memset((void*)0x200002e8, 0, 84);
  *(uint32_t*)0x2000033c = 0;
  *(uint16_t*)0x20000340 = 0xc8;
  *(uint16_t*)0x20000342 = 0x110;
  *(uint32_t*)0x20000344 = 0;
  *(uint64_t*)0x20000348 = 0;
  *(uint64_t*)0x20000350 = 0;
  *(uint16_t*)0x20000358 = 0x28;
  memcpy((void*)0x2000035a,
         "ttl\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*)0x20000377 = 0;
  *(uint8_t*)0x20000378 = 0;
  *(uint8_t*)0x20000379 = 0;
  *(uint16_t*)0x20000380 = 0x30;
  memcpy((void*)0x20000382,
         "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*)0x2000039f = 0;
  *(uint16_t*)0x200003a0 = 0;
  *(uint16_t*)0x200003a2 = 0;
  *(uint32_t*)0x200003a4 = 0;
  *(uint32_t*)0x200003a8 = 0;
  *(uint16_t*)0x200003b0 = 0x48;
  memcpy((void*)0x200003b2,
         "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*)0x200003cf = 1;
  *(uint8_t*)0x200003d0 = -1;
  *(uint8_t*)0x200003d1 = 1;
  memset((void*)0x200003d2, 0, 13);
  *(uint8_t*)0x200003df = 1;
  memcpy((void*)0x200003e0, "ip6gretap0\000\000\000\000\000\000", 16);
  *(uint64_t*)0x200003f0 = 0;
  memset((void*)0x200003f8, 0, 84);
  *(uint32_t*)0x2000044c = 0;
  *(uint16_t*)0x20000450 = 0x70;
  *(uint16_t*)0x20000452 = 0x98;
  *(uint32_t*)0x20000454 = 0;
  *(uint64_t*)0x20000458 = 0;
  *(uint64_t*)0x20000460 = 0;
  *(uint16_t*)0x20000468 = 0x28;
  memset((void*)0x2000046a, 0, 29);
  *(uint8_t*)0x20000487 = 0;
  *(uint32_t*)0x20000488 = 0xfffffffe;
  syscall(__NR_setsockopt, r[1], 0, 0x40, 0x20000100ul, 0x390ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0);
  if (res != -1)
    r[2] = res;
  *(uint64_t*)0x20000040 = 0;
  *(uint32_t*)0x20000048 = 0;
  *(uint64_t*)0x20000050 = 0x20000000;
  *(uint64_t*)0x20000000 = 0x20000140;
  memcpy((void*)0x20000140,
         "\x48\x00\x00\x00\x10\x00\x05\x07\x00\x00\x04\x00\x00\x00\x00\x00\x00"
         "\x00\x00\x00",
         20);
  *(uint32_t*)0x20000154 = -1;
  memcpy((void*)0x20000158,
         "\x00\x00\x00\x00\x00\x00\x00\x00\x28\x00\x12\x00\x0c\x00\x01\x00\x76"
         "\x65\x74\x68",
         20);
  *(uint64_t*)0x20000008 = 0x48;
  *(uint64_t*)0x20000058 = 1;
  *(uint64_t*)0x20000060 = 0;
  *(uint64_t*)0x20000068 = 0;
  *(uint32_t*)0x20000070 = 0;
  syscall(__NR_sendmsg, r[2], 0x20000040ul, 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;
}