// 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*)0x20000080, "/dev/ptmx\000", 10);
  res = syscall(__NR_openat, 0xffffffffffffff9cul, 0x20000080ul, 0ul, 0ul);
  if (res != -1)
    r[0] = res;
  *(uint32_t*)0x20000380 = 0x11;
  syscall(__NR_ioctl, r[0], 0x5423, 0x20000380ul);
  res = syscall(__NR_socket, 0xaul, 1ul, 0);
  if (res != -1)
    r[1] = res;
  memcpy((void*)0x20000000,
         "raw\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\000\000\000",
         32);
  *(uint32_t*)0x20000020 = 9;
  *(uint32_t*)0x20000024 = 3;
  *(uint32_t*)0x20000028 = 0x310;
  *(uint32_t*)0x2000002c = 0;
  *(uint32_t*)0x20000030 = -1;
  *(uint32_t*)0x20000034 = -1;
  *(uint32_t*)0x20000038 = 0x170;
  *(uint32_t*)0x2000003c = -1;
  *(uint32_t*)0x20000040 = 0x240;
  *(uint32_t*)0x20000044 = -1;
  *(uint32_t*)0x20000048 = -1;
  *(uint32_t*)0x2000004c = 0x240;
  *(uint32_t*)0x20000050 = -1;
  *(uint32_t*)0x20000054 = 3;
  *(uint64_t*)0x20000058 = 0;
  memset((void*)0x20000060, 0, 136);
  *(uint32_t*)0x200000e8 = 0;
  *(uint16_t*)0x200000ec = 0x128;
  *(uint16_t*)0x200000ee = 0x170;
  *(uint32_t*)0x200000f0 = 0;
  *(uint64_t*)0x200000f8 = 0;
  *(uint64_t*)0x20000100 = 0;
  *(uint16_t*)0x20000108 = 0x28;
  memcpy((void*)0x2000010a,
         "rpfilter\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x20000127 = 0;
  *(uint8_t*)0x20000128 = 0;
  *(uint16_t*)0x20000130 = 0x58;
  memcpy((void*)0x20000132,
         "hashlimit\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000",
         29);
  *(uint8_t*)0x2000014f = 1;
  memcpy((void*)0x20000150,
         "lo\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16);
  *(uint32_t*)0x20000160 = 0;
  *(uint32_t*)0x20000164 = 0;
  *(uint32_t*)0x20000168 = 1;
  *(uint32_t*)0x2000016c = 5;
  *(uint32_t*)0x20000170 = 0x7f;
  *(uint32_t*)0x20000174 = 0x400;
  *(uint32_t*)0x20000178 = 1;
  *(uint8_t*)0x2000017c = 0;
  *(uint8_t*)0x2000017d = 0;
  *(uint64_t*)0x20000180 = 0;
  *(uint16_t*)0x20000188 = 0x48;
  memcpy((void*)0x2000018a,
         "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*)0x200001a7 = 1;
  *(uint8_t*)0x200001a8 = 0xfe;
  *(uint8_t*)0x200001a9 = 0x80;
  memset((void*)0x200001aa, 0, 13);
  *(uint8_t*)0x200001b7 = 0xbb;
  memcpy((void*)0x200001b8, "bridge_slave_1\000\000", 16);
  *(uint64_t*)0x200001c8 = 0;
  *(uint8_t*)0x200001d0 = 0xfc;
  *(uint8_t*)0x200001d1 = 2;
  memset((void*)0x200001d2, 0, 13);
  *(uint8_t*)0x200001df = 0;
  *(uint8_t*)0x200001e0 = 0xfe;
  *(uint8_t*)0x200001e1 = 0x88;
  memset((void*)0x200001e2, 0, 12);
  *(uint8_t*)0x200001ee = 0;
  *(uint8_t*)0x200001ef = 1;
  *(uint32_t*)0x200001f0 = htobe32(0);
  *(uint32_t*)0x200001f4 = htobe32(0);
  *(uint32_t*)0x200001f8 = htobe32(0);
  *(uint32_t*)0x200001fc = htobe32(0);
  *(uint32_t*)0x20000200 = htobe32(0);
  *(uint32_t*)0x20000204 = htobe32(0);
  *(uint32_t*)0x20000208 = htobe32(0);
  *(uint32_t*)0x2000020c = htobe32(0);
  memcpy((void*)0x20000210, "tunl0\000\000\000\000\000\000\000\000\000\000\000",
         16);
  memcpy((void*)0x20000220,
         "hsr0\000\000\000\000\000\000\000\000\000\000\000\000", 16);
  *(uint8_t*)0x20000230 = 0;
  *(uint8_t*)0x20000240 = 0;
  *(uint16_t*)0x20000250 = 0;
  *(uint8_t*)0x20000252 = 0;
  *(uint8_t*)0x20000253 = 0;
  *(uint8_t*)0x20000254 = 0;
  *(uint32_t*)0x20000258 = 0;
  *(uint16_t*)0x2000025c = 0xa8;
  *(uint16_t*)0x2000025e = 0xd0;
  *(uint32_t*)0x20000260 = 0;
  *(uint64_t*)0x20000268 = 0;
  *(uint64_t*)0x20000270 = 0;
  *(uint16_t*)0x20000278 = 0x28;
  memcpy((void*)0x2000027a,
         "AUDIT\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*)0x20000297 = 0;
  *(uint8_t*)0x20000298 = 0;
  memset((void*)0x200002a0, 0, 136);
  *(uint32_t*)0x20000328 = 0;
  *(uint16_t*)0x2000032c = 0xa8;
  *(uint16_t*)0x2000032e = 0xd0;
  *(uint32_t*)0x20000330 = 0;
  *(uint64_t*)0x20000338 = 0;
  *(uint64_t*)0x20000340 = 0;
  *(uint16_t*)0x20000348 = 0x28;
  memset((void*)0x2000034a, 0, 29);
  *(uint8_t*)0x20000367 = 0;
  *(uint32_t*)0x20000368 = 0xfffffffe;
  syscall(__NR_setsockopt, r[1], 0x29, 0x40, 0x20000000ul, 0x370ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0xc);
  if (res != -1)
    r[2] = res;
  *(uint64_t*)0x20000bc0 = 0;
  *(uint32_t*)0x20000bc8 = 0;
  *(uint64_t*)0x20000bd0 = 0x20000b80;
  *(uint64_t*)0x20000b80 = 0x20000b00;
  *(uint32_t*)0x20000b00 = 0x2c;
  *(uint8_t*)0x20000b04 = 0;
  *(uint8_t*)0x20000b05 = 0xb;
  *(uint16_t*)0x20000b06 = 5;
  *(uint32_t*)0x20000b08 = 0;
  *(uint32_t*)0x20000b0c = 0;
  *(uint8_t*)0x20000b10 = 3;
  *(uint8_t*)0x20000b11 = 0;
  *(uint16_t*)0x20000b12 = htobe16(0);
  *(uint16_t*)0x20000b14 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x20000b16, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000b17, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000b17, 0, 7, 1);
  *(uint32_t*)0x20000b18 = htobe32(0);
  *(uint16_t*)0x20000b1c = 8;
  *(uint16_t*)0x20000b1e = 1;
  memcpy((void*)0x20000b20, "+^#\000", 4);
  *(uint16_t*)0x20000b24 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x20000b26, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000b27, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000b27, 0, 7, 1);
  *(uint32_t*)0x20000b28 = htobe32(0);
  *(uint64_t*)0x20000b88 = 0x2c;
  *(uint64_t*)0x20000bd8 = 1;
  *(uint64_t*)0x20000be0 = 0;
  *(uint64_t*)0x20000be8 = 0;
  *(uint32_t*)0x20000bf0 = 0;
  syscall(__NR_sendmsg, r[2], 0x20000bc0ul, 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;
}