// https://syzkaller.appspot.com/bug?id=7a694fef4d21cfe0461fb9d071a5cf8e57c0af79
// 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, 0xaul, 2ul, 0);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x20000040,
         "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*)0x20000060 = 0xe;
  *(uint32_t*)0x20000064 = 4;
  *(uint32_t*)0x20000068 = 0x3a0;
  *(uint32_t*)0x2000006c = -1;
  *(uint32_t*)0x20000070 = 0;
  *(uint32_t*)0x20000074 = 0;
  *(uint32_t*)0x20000078 = 0xf0;
  *(uint32_t*)0x2000007c = -1;
  *(uint32_t*)0x20000080 = -1;
  *(uint32_t*)0x20000084 = 0x2d0;
  *(uint32_t*)0x20000088 = 0x2d0;
  *(uint32_t*)0x2000008c = 0x2d0;
  *(uint32_t*)0x20000090 = -1;
  *(uint32_t*)0x20000094 = 4;
  *(uint64_t*)0x20000098 = 0;
  memset((void*)0x200000a0, 0, 136);
  *(uint32_t*)0x20000128 = 0;
  *(uint16_t*)0x2000012c = 0xa8;
  *(uint16_t*)0x2000012e = 0xf0;
  *(uint32_t*)0x20000130 = 0;
  *(uint64_t*)0x20000138 = 0;
  *(uint64_t*)0x20000140 = 0;
  *(uint16_t*)0x20000148 = 0x48;
  memcpy((void*)0x2000014a,
         "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*)0x20000167 = 1;
  *(uint32_t*)0x20000168 = htobe32(-1);
  memcpy((void*)0x20000178, "caif0\000\000\000\000\000\000\000\000\000\000\000",
         16);
  *(uint64_t*)0x20000188 = 0;
  memset((void*)0x20000190, 0, 136);
  *(uint32_t*)0x20000218 = 0;
  *(uint16_t*)0x2000021c = 0xa8;
  *(uint16_t*)0x2000021e = 0x108;
  *(uint32_t*)0x20000220 = 0;
  *(uint64_t*)0x20000228 = 0;
  *(uint64_t*)0x20000230 = 0;
  *(uint16_t*)0x20000238 = 0x60;
  memcpy((void*)0x2000023a,
         "HMARK\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*)0x20000257 = 0;
  *(uint32_t*)0x20000258 = htobe32(0);
  *(uint32_t*)0x20000268 = htobe32(0);
  *(uint32_t*)0x2000026c = htobe32(0);
  *(uint32_t*)0x20000270 = htobe32(0);
  *(uint32_t*)0x20000274 = htobe32(0);
  *(uint16_t*)0x20000278 = htobe16(0);
  *(uint16_t*)0x2000027a = htobe16(0);
  *(uint16_t*)0x2000027c = htobe16(0);
  *(uint16_t*)0x2000027e = htobe16(0);
  *(uint32_t*)0x20000280 = 0;
  *(uint16_t*)0x20000284 = 0;
  *(uint32_t*)0x20000288 = 0;
  *(uint32_t*)0x2000028c = 0x1fe;
  *(uint32_t*)0x20000290 = 0;
  *(uint8_t*)0x20000298 = 0xfc;
  *(uint8_t*)0x20000299 = 0;
  memset((void*)0x2000029a, 0, 13);
  *(uint8_t*)0x200002a7 = 0;
  *(uint8_t*)0x200002a8 = -1;
  *(uint8_t*)0x200002a9 = 2;
  memset((void*)0x200002aa, 0, 13);
  *(uint8_t*)0x200002b7 = 1;
  *(uint32_t*)0x200002b8 = htobe32(0);
  *(uint32_t*)0x200002bc = htobe32(0);
  *(uint32_t*)0x200002c0 = htobe32(0);
  *(uint32_t*)0x200002c4 = htobe32(0);
  *(uint32_t*)0x200002c8 = htobe32(0);
  *(uint32_t*)0x200002cc = htobe32(0);
  *(uint32_t*)0x200002d0 = htobe32(0);
  *(uint32_t*)0x200002d4 = htobe32(0);
  memcpy((void*)0x200002d8, "bridge_slave_0\000\000", 16);
  memcpy((void*)0x200002e8, "ip6gre0\000\000\000\000\000\000\000\000\000", 16);
  *(uint8_t*)0x200002f8 = 0;
  *(uint8_t*)0x20000308 = 0;
  *(uint16_t*)0x20000318 = 0;
  *(uint8_t*)0x2000031a = 0;
  *(uint8_t*)0x2000031b = 0;
  *(uint8_t*)0x2000031c = 0;
  *(uint32_t*)0x20000320 = 0;
  *(uint16_t*)0x20000324 = 0xa8;
  *(uint16_t*)0x20000326 = 0xd8;
  *(uint32_t*)0x20000328 = 0;
  *(uint64_t*)0x20000330 = 0;
  *(uint64_t*)0x20000338 = 0;
  *(uint16_t*)0x20000340 = 0x30;
  memcpy((void*)0x20000342,
         "SET\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*)0x2000035f = 2;
  *(uint16_t*)0x20000360 = -1;
  *(uint8_t*)0x20000362 = 0;
  *(uint8_t*)0x20000363 = 0;
  *(uint16_t*)0x20000364 = 0;
  *(uint8_t*)0x20000366 = 4;
  *(uint8_t*)0x20000367 = 0;
  *(uint32_t*)0x20000368 = 0;
  *(uint32_t*)0x2000036c = 0;
  memset((void*)0x20000370, 0, 136);
  *(uint32_t*)0x200003f8 = 0;
  *(uint16_t*)0x200003fc = 0xa8;
  *(uint16_t*)0x200003fe = 0xd0;
  *(uint32_t*)0x20000400 = 0;
  *(uint64_t*)0x20000408 = 0;
  *(uint64_t*)0x20000410 = 0;
  *(uint16_t*)0x20000418 = 0x28;
  memset((void*)0x2000041a, 0, 29);
  *(uint8_t*)0x20000437 = 0;
  *(uint32_t*)0x20000438 = 0xfffffffe;
  syscall(__NR_setsockopt, r[0], 0x29, 0x40, 0x20000040ul, 0x400ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0xc);
  if (res != -1)
    r[1] = res;
  *(uint64_t*)0x20000000 = 0;
  *(uint32_t*)0x20000008 = 0;
  *(uint64_t*)0x20000010 = 0x20000080;
  *(uint64_t*)0x20000080 = 0x200001c0;
  *(uint32_t*)0x200001c0 = 0x48;
  *(uint8_t*)0x200001c4 = 2;
  *(uint8_t*)0x200001c5 = 6;
  *(uint16_t*)0x200001c6 = 7;
  *(uint32_t*)0x200001c8 = 5;
  *(uint32_t*)0x200001cc = 0x9000000;
  *(uint8_t*)0x200001d0 = 0;
  *(uint8_t*)0x200001d1 = 0;
  *(uint16_t*)0x200001d2 = htobe16(0);
  *(uint16_t*)0x200001d4 = 5;
  *(uint16_t*)0x200001d6 = 4;
  *(uint8_t*)0x200001d8 = 0;
  *(uint16_t*)0x200001dc = 9;
  *(uint16_t*)0x200001de = 2;
  memcpy((void*)0x200001e0, "syz0\000", 5);
  *(uint16_t*)0x200001e8 = 0x10;
  *(uint16_t*)0x200001ea = 3;
  memcpy((void*)0x200001ec, "hash:ip,mac\000", 12);
  *(uint16_t*)0x200001f8 = 5;
  *(uint16_t*)0x200001fa = 5;
  *(uint8_t*)0x200001fc = 0xa;
  *(uint16_t*)0x20000200 = 5;
  *(uint16_t*)0x20000202 = 1;
  *(uint8_t*)0x20000204 = 6;
  *(uint64_t*)0x20000088 = 0x48;
  *(uint64_t*)0x20000018 = 1;
  *(uint64_t*)0x20000020 = 0;
  *(uint64_t*)0x20000028 = 0;
  *(uint32_t*)0x20000030 = 0;
  syscall(__NR_sendmsg, r[1], 0x20000000ul, 0ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0xc);
  if (res != -1)
    r[2] = res;
  *(uint64_t*)0x20000480 = 0;
  *(uint32_t*)0x20000488 = 0;
  *(uint64_t*)0x20000490 = 0x20000440;
  *(uint64_t*)0x20000440 = 0x20000400;
  *(uint32_t*)0x20000400 = 0x30;
  *(uint8_t*)0x20000404 = 0;
  *(uint8_t*)0x20000405 = 0xb;
  *(uint16_t*)0x20000406 = 0x301;
  *(uint32_t*)0x20000408 = 0;
  *(uint32_t*)0x2000040c = 0;
  *(uint8_t*)0x20000410 = 0xa;
  *(uint8_t*)0x20000411 = 0;
  *(uint16_t*)0x20000412 = htobe16(0);
  *(uint16_t*)0x20000414 = 0xc;
  *(uint16_t*)0x20000416 = 1;
  memcpy((void*)0x20000418, "nl80211\000", 8);
  *(uint16_t*)0x20000420 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x20000422, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000423, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000423, 0, 7, 1);
  *(uint32_t*)0x20000424 = htobe32(0);
  *(uint16_t*)0x20000428 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x2000042a, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000042b, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000042b, 0, 7, 1);
  *(uint32_t*)0x2000042c = htobe32(1);
  *(uint64_t*)0x20000448 = 0x30;
  *(uint64_t*)0x20000498 = 1;
  *(uint64_t*)0x200004a0 = 0;
  *(uint64_t*)0x200004a8 = 0;
  *(uint32_t*)0x200004b0 = 0;
  syscall(__NR_sendmsg, r[2], 0x20000480ul, 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;
}