// 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;
}

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, 2ul, 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 = 0x2a8;
  *(uint32_t*)0x2000006c = -1;
  *(uint32_t*)0x20000070 = 0;
  *(uint32_t*)0x20000074 = 0x158;
  *(uint32_t*)0x20000078 = 0;
  *(uint32_t*)0x2000007c = -1;
  *(uint32_t*)0x20000080 = -1;
  *(uint32_t*)0x20000084 = 0x210;
  *(uint32_t*)0x20000088 = 0x210;
  *(uint32_t*)0x2000008c = 0x210;
  *(uint32_t*)0x20000090 = -1;
  *(uint32_t*)0x20000094 = 4;
  *(uint64_t*)0x20000098 = 0;
  *(uint32_t*)0x200000a0 = htobe32(-1);
  *(uint32_t*)0x200000a4 = htobe32(-1);
  *(uint32_t*)0x200000a8 = htobe32(0);
  *(uint32_t*)0x200000ac = htobe32(0);
  memcpy((void*)0x200000b0,
         "hsr0\000\000\000\000\000\000\000\000\000\000\000\000", 16);
  memcpy((void*)0x200000c0, "veth1_to_bridge\000", 16);
  *(uint8_t*)0x200000d0 = 0;
  *(uint8_t*)0x200000e0 = 0;
  *(uint16_t*)0x200000f0 = 0;
  *(uint8_t*)0x200000f2 = 0;
  *(uint8_t*)0x200000f3 = 0;
  *(uint32_t*)0x200000f4 = 0;
  *(uint16_t*)0x200000f8 = 0x70;
  *(uint16_t*)0x200000fa = 0x98;
  *(uint32_t*)0x200000fc = 0;
  *(uint64_t*)0x20000100 = 0;
  *(uint64_t*)0x20000108 = 0;
  *(uint16_t*)0x20000110 = 0x28;
  memcpy((void*)0x20000112,
         "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*)0x2000012f = 0;
  *(uint32_t*)0x20000130 = 0;
  *(uint32_t*)0x20000138 = htobe32(0);
  *(uint32_t*)0x2000013c = htobe32(0);
  *(uint32_t*)0x20000140 = htobe32(0);
  *(uint32_t*)0x20000144 = htobe32(0);
  memcpy((void*)0x20000148, "wlan0\000\000\000\000\000\000\000\000\000\000\000",
         16);
  memcpy((void*)0x20000158, "batadv0\000\000\000\000\000\000\000\000\000", 16);
  *(uint8_t*)0x20000168 = 0;
  *(uint8_t*)0x20000178 = 0;
  *(uint16_t*)0x20000188 = 6;
  *(uint8_t*)0x2000018a = 0;
  *(uint8_t*)0x2000018b = 0;
  *(uint32_t*)0x2000018c = 0;
  *(uint16_t*)0x20000190 = 0x98;
  *(uint16_t*)0x20000192 = 0xc0;
  *(uint32_t*)0x20000194 = 0;
  *(uint64_t*)0x20000198 = 0;
  *(uint64_t*)0x200001a0 = 0;
  *(uint16_t*)0x200001a8 = 0x28;
  memcpy((void*)0x200001aa,
         "ecn\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*)0x200001c7 = 0;
  *(uint8_t*)0x200001c8 = 0x30;
  *(uint8_t*)0x200001c9 = 0x10;
  *(uint8_t*)0x200001ca = 0;
  *(uint8_t*)0x200001cb = 0;
  *(uint16_t*)0x200001d0 = 0x28;
  memcpy((void*)0x200001d2,
         "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*)0x200001ef = 0;
  *(uint32_t*)0x200001f0 = 0;
  *(uint32_t*)0x200001f8 = htobe32(0xe0000001);
  *(uint32_t*)0x200001fc = htobe32(0);
  *(uint32_t*)0x20000200 = htobe32(0);
  *(uint32_t*)0x20000204 = htobe32(0);
  memcpy((void*)0x20000208, "netpci0\000\000\000\000\000\000\000\000\000", 16);
  memcpy((void*)0x20000218, "rose0\000\000\000\000\000\000\000\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 = 0x70;
  *(uint16_t*)0x20000252 = 0xb8;
  *(uint32_t*)0x20000254 = 0;
  *(uint64_t*)0x20000258 = 0;
  *(uint64_t*)0x20000260 = 0;
  *(uint16_t*)0x20000268 = 0x48;
  memcpy((void*)0x2000026a,
         "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*)0x20000287 = 1;
  *(uint32_t*)0x20000288 = htobe32(0xe0000001);
  memcpy((void*)0x20000298, "ip6gretap0\000\000\000\000\000\000", 16);
  *(uint64_t*)0x200002a8 = 0;
  memset((void*)0x200002b0, 0, 84);
  *(uint32_t*)0x20000304 = 0;
  *(uint16_t*)0x20000308 = 0x70;
  *(uint16_t*)0x2000030a = 0x98;
  *(uint32_t*)0x2000030c = 0;
  *(uint64_t*)0x20000310 = 0;
  *(uint64_t*)0x20000318 = 0;
  *(uint16_t*)0x20000320 = 0x28;
  memset((void*)0x20000322, 0, 29);
  *(uint8_t*)0x2000033f = 0;
  *(uint32_t*)0x20000340 = 0xfffffffe;
  syscall(__NR_setsockopt, r[0], 0, 0x40, 0x20000040ul, 0x308ul);
  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, 0ul, 0ul);
  if (res != -1)
    r[1] = res;
  memcpy((void*)0x200000c0, "syzkaller1\000\000\000\000\000\000", 16);
  syscall(__NR_ioctl, r[1], 0x400454ca, 0x200000c0ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0xc);
  if (res != -1)
    r[2] = res;
  *(uint64_t*)0x20000300 = 0;
  *(uint32_t*)0x20000308 = 0;
  *(uint64_t*)0x20000310 = 0x20000000;
  *(uint64_t*)0x20000000 = 0x20000040;
  memcpy((void*)0x20000040,
         "\x64\x00\x00\x00\x00\x0b\x01\x04\x00\x00\x00\x00\x14\x1a\x00\x00\x02"
         "\x00\x00\x00\x18\x00\x01\x80\x14\x00\x01\x80\x08\x00\x01\x00\xac\x14"
         "\x14\xaa\x08\x00\x02\x00\x00\x00\x00\x00\x30\x00\x02\x80\x2c\x00\x01"
         "\x80\x14\x00\x03\x00\xff\x01\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff"
         "\x00\x00\x00\x01\x14\x00\x04\x00\xfc\x01\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x00\x00\x00\x00\x00\x00\x08\x00\x03\x80\x04\x00\x01\x80\x62\x31"
         "\xc3\x80\x06\x38\xef\xc5\x3a\xe2\x61\x70\xde\xd3",
         114);
  *(uint64_t*)0x20000008 = 0x64;
  *(uint64_t*)0x20000318 = 1;
  *(uint64_t*)0x20000320 = 0;
  *(uint64_t*)0x20000328 = 0;
  *(uint32_t*)0x20000330 = 0;
  syscall(__NR_sendmsg, r[2], 0x20000300ul, 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;
}