// https://syzkaller.appspot.com/bug?id=e617dfba354312fdd7a74355d9ce30015c450e16
// 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[6] = {0xffffffffffffffff, 0xffffffffffffffff, 0x0,
                 0xffffffffffffffff, 0xffffffffffffffff, 0x0};

void execute_one(void)
{
  intptr_t res = 0;
  res = syscall(__NR_socket, 0x10ul, 0x803ul, 0);
  if (res != -1)
    r[0] = res;
  *(uint64_t*)0x20000300 = 0;
  *(uint32_t*)0x20000308 = 0;
  *(uint64_t*)0x20000310 = 0x20000280;
  *(uint64_t*)0x20000280 = 0;
  *(uint64_t*)0x20000288 = 0x30;
  *(uint64_t*)0x20000318 = 1;
  *(uint64_t*)0x20000320 = 0;
  *(uint64_t*)0x20000328 = 0;
  *(uint32_t*)0x20000330 = 0;
  syscall(__NR_sendmsg, r[0], 0x20000300ul, 0ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0);
  if (res != -1)
    r[1] = res;
  *(uint32_t*)0x20000440 = 0x14;
  res = syscall(__NR_getsockname, r[0], 0x20000500ul, 0x20000440ul);
  if (res != -1)
    r[2] = *(uint32_t*)0x20000504;
  res = syscall(__NR_socket, 0x10ul, 3ul, 0);
  if (res != -1)
    r[3] = res;
  res = syscall(__NR_socket, 0x10ul, 0x803ul, 0);
  if (res != -1)
    r[4] = res;
  *(uint64_t*)0x20000340 = 0;
  *(uint32_t*)0x20000348 = 0;
  *(uint64_t*)0x20000350 = 0x20000240;
  *(uint64_t*)0x20000240 = 0;
  *(uint64_t*)0x20000248 = 0x14;
  *(uint64_t*)0x20000358 = 1;
  *(uint64_t*)0x20000360 = 0;
  *(uint64_t*)0x20000368 = 0;
  *(uint32_t*)0x20000370 = 0;
  syscall(__NR_sendmsg, r[4], 0x20000340ul, 0ul);
  *(uint32_t*)0x200002c0 = 0x14;
  res = syscall(__NR_getsockname, r[4], 0x20000080ul, 0x200002c0ul);
  if (res != -1)
    r[5] = *(uint32_t*)0x20000084;
  *(uint64_t*)0x200004c0 = 0;
  *(uint32_t*)0x200004c8 = 0;
  *(uint64_t*)0x200004d0 = 0x200006c0;
  *(uint64_t*)0x200006c0 = 0x20000580;
  memcpy((void*)0x20000580,
         "\x3c\x00\x00\x00\x10\x00\x01\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x02\x00",
         20);
  *(uint32_t*)0x20000594 = r[5];
  memcpy((void*)0x20000598,
         "\x45\x07\x02\x00\x00\x00\x00\x00\x1c\x00\x12\x80\x0b\x00\x01\x00\x62"
         "\x72\x69\x64\x67\x65\x00\x00\x0c\x00\x02\x80\x05\x00\x07\x00\x02\x00"
         "\x00\x00",
         36);
  *(uint64_t*)0x200006c8 = 0x3c;
  *(uint64_t*)0x200004d8 = 1;
  *(uint64_t*)0x200004e0 = 0;
  *(uint64_t*)0x200004e8 = 0;
  *(uint32_t*)0x200004f0 = 0;
  syscall(__NR_sendmsg, r[3], 0x200004c0ul, 0ul);
  *(uint64_t*)0x20000040 = 0;
  *(uint32_t*)0x20000048 = 0;
  *(uint64_t*)0x20000050 = 0x20000140;
  *(uint64_t*)0x20000140 = 0x200005c0;
  *(uint32_t*)0x200005c0 = 0x90;
  *(uint16_t*)0x200005c4 = 0x10;
  *(uint16_t*)0x200005c6 = 0x401;
  *(uint32_t*)0x200005c8 = 0x12fc;
  *(uint32_t*)0x200005cc = 0;
  *(uint8_t*)0x200005d0 = 0;
  *(uint8_t*)0x200005d1 = 0;
  *(uint16_t*)0x200005d2 = 0;
  *(uint32_t*)0x200005d4 = 0;
  *(uint32_t*)0x200005d8 = 0;
  *(uint32_t*)0x200005dc = 0;
  *(uint16_t*)0x200005e0 = 0x60;
  STORE_BY_BITMASK(uint16_t, , 0x200005e2, 0x12, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200005e3, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200005e3, 1, 7, 1);
  *(uint16_t*)0x200005e4 = 9;
  *(uint16_t*)0x200005e6 = 1;
  memcpy((void*)0x200005e8, "vlan\000", 5);
  *(uint16_t*)0x200005f0 = 0x50;
  STORE_BY_BITMASK(uint16_t, , 0x200005f2, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200005f3, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200005f3, 1, 7, 1);
  *(uint16_t*)0x200005f4 = 6;
  *(uint16_t*)0x200005f6 = 5;
  *(uint16_t*)0x200005f8 = htobe16(0x88a8);
  *(uint16_t*)0x200005fc = 6;
  *(uint16_t*)0x200005fe = 1;
  *(uint16_t*)0x20000600 = 2;
  *(uint16_t*)0x20000604 = 0x34;
  STORE_BY_BITMASK(uint16_t, , 0x20000606, 4, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000607, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000607, 1, 7, 1);
  *(uint16_t*)0x20000608 = 0xc;
  *(uint16_t*)0x2000060a = 1;
  *(uint32_t*)0x2000060c = 4;
  *(uint32_t*)0x20000610 = 7;
  *(uint16_t*)0x20000614 = 0xc;
  *(uint16_t*)0x20000616 = 1;
  *(uint32_t*)0x20000618 = 0x81;
  *(uint32_t*)0x2000061c = 1;
  *(uint16_t*)0x20000620 = 0xc;
  *(uint16_t*)0x20000622 = 1;
  *(uint32_t*)0x20000624 = 0x80000001;
  *(uint32_t*)0x20000628 = 7;
  *(uint16_t*)0x2000062c = 0xc;
  *(uint16_t*)0x2000062e = 1;
  *(uint32_t*)0x20000630 = 0xffffffe0;
  *(uint32_t*)0x20000634 = 7;
  *(uint16_t*)0x20000638 = 6;
  *(uint16_t*)0x2000063a = 1;
  *(uint16_t*)0x2000063c = 1;
  *(uint16_t*)0x20000640 = 8;
  *(uint16_t*)0x20000642 = 5;
  *(uint32_t*)0x20000644 = r[5];
  *(uint16_t*)0x20000648 = 8;
  *(uint16_t*)0x2000064a = 0xa;
  *(uint32_t*)0x2000064c = r[2];
  *(uint64_t*)0x20000148 = 0x90;
  *(uint64_t*)0x20000058 = 1;
  *(uint64_t*)0x20000060 = 0;
  *(uint64_t*)0x20000068 = 0;
  *(uint32_t*)0x20000070 = 0x11;
  syscall(__NR_sendmsg, r[1], 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;
}