// https://syzkaller.appspot.com/bug?id=b4c40c03cb6244b1a8861091123cf7ea96973ad8
// 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[6] = {
    0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0,
    0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[0] = res;
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/0x803ul, /*proto=*/0);
  if (res != -1)
    r[1] = res;
  syscall(__NR_write, /*fd=*/r[1], /*data=*/0ul, /*len=*/4ul);
  *(uint32_t*)0x20000200 = 0x51;
  res = syscall(__NR_getsockname, /*fd=*/r[1], /*addr=*/0x20000180ul,
                /*addrlen=*/0x20000200ul);
  if (res != -1)
    r[2] = *(uint32_t*)0x20000184;
  *(uint64_t*)0x20000040 = 0;
  *(uint32_t*)0x20000048 = 0;
  *(uint64_t*)0x20000050 = 0x20000000;
  *(uint64_t*)0x20000000 = 0x200005c0;
  memcpy((void*)0x200005c0,
         "\x48\x00\x00\x00\x10\x00\x05\x07\x00\x00\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x00\x00",
         20);
  *(uint32_t*)0x200005d4 = r[2];
  memcpy((void*)0x200005d8,
         "\x00\x43\xee\xff\xff\xff\xff\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, /*fd=*/r[0], /*msg=*/0x20000040ul, /*f=*/0ul);
  res = syscall(__NR_socket, /*domain=*/0x2cul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[3] = res;
  *(uint64_t*)0x200000c0 = 0x20000000;
  *(uint64_t*)0x200000c8 = 0x1000000;
  *(uint32_t*)0x200000d0 = 0x1000;
  *(uint32_t*)0x200000d4 = 0;
  *(uint32_t*)0x200000d8 = 0;
  syscall(__NR_setsockopt, /*fd=*/r[3], /*level=*/0x11b, /*opt=*/4,
          /*val=*/0x200000c0ul, /*len=*/0x20ul);
  *(uint32_t*)0x200004c0 = 0x80;
  syscall(__NR_setsockopt, /*fd=*/r[3], /*level=*/0x11b, /*opt=*/5,
          /*val=*/0x200004c0ul, /*len=*/4ul);
  *(uint32_t*)0x20000140 = 2;
  syscall(__NR_setsockopt, /*fd=*/r[3], /*level=*/0x11b, /*opt=*/3,
          /*val=*/0x20000140ul, /*len=*/4ul);
  *(uint32_t*)0x200002c0 = 0x14;
  res = syscall(__NR_getsockname, /*fd=*/r[1], /*addr=*/0x20000100ul,
                /*addrlen=*/0x200002c0ul);
  if (res != -1)
    r[4] = *(uint32_t*)0x20000104;
  *(uint32_t*)0x20000080 = 0x400;
  syscall(__NR_setsockopt, /*fd=*/r[3], /*level=*/0x11b, /*opt=*/6,
          /*val=*/0x20000080ul, /*len=*/4ul);
  *(uint16_t*)0x20000040 = 0x2c;
  *(uint16_t*)0x20000042 = 0;
  *(uint32_t*)0x20000044 = r[4];
  *(uint32_t*)0x20000048 = 0;
  *(uint32_t*)0x2000004c = -1;
  syscall(__NR_bind, /*fd=*/r[3], /*addr=*/0x20000040ul, /*len=*/0x10ul);
  *(uint64_t*)0x20000700 = 0;
  *(uint32_t*)0x20000708 = 0x900;
  *(uint64_t*)0x20000710 = 0x20000580;
  *(uint64_t*)0x20000580 = 0x20000600;
  *(uint32_t*)0x20000600 = 0x20;
  *(uint16_t*)0x20000604 = 0x11;
  *(uint16_t*)0x20000606 = 1;
  *(uint32_t*)0x20000608 = 0;
  *(uint32_t*)0x2000060c = 0;
  *(uint8_t*)0x20000610 = 0;
  *(uint8_t*)0x20000611 = 0;
  *(uint16_t*)0x20000612 = 0;
  *(uint32_t*)0x20000614 = r[2];
  *(uint32_t*)0x20000618 = 0;
  *(uint32_t*)0x2000061c = 0;
  *(uint64_t*)0x20000588 = 0x20;
  *(uint64_t*)0x20000718 = 1;
  *(uint64_t*)0x20000720 = 0;
  *(uint64_t*)0x20000728 = 0;
  *(uint32_t*)0x20000730 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x20000700ul, /*f=*/0ul);
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/4);
  if (res != -1)
    r[5] = res;
  *(uint64_t*)0x200003c0 = 0x20000200;
  memcpy((void*)0x20000200,
         "\x48\x00\x00\x00\x14\x00\x19\x0d\x7e\xbd\xeb\x75\xfd\x0d\x8c\x56\x2c"
         "\x84\xd8\xc0\x33\xed\x7a\x80\xff\xe0\x09\x0f\x00\x00\x00\x00\x00\x00"
         "\xa2\xbc\x56\x03\xca\x00\x00\x0f\x7f\x89\x00\x00\x00\x20\x00\x00\x00"
         "\x4a\x24\x71\x08\x3e\xc6\x99\x17\x78\x58\x1a\xcb\x6c\x01\x01\xff\x00"
         "\x00\x00\x03\x09",
         72);
  *(uint64_t*)0x200003c8 = 0x48;
  syscall(__NR_writev, /*fd=*/r[5], /*vec=*/0x200003c0ul, /*vlen=*/1ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/7ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  loop();
  return 0;
}