// https://syzkaller.appspot.com/bug?id=fb453bc21cf8eb5cd3ba91406b5d22e8915cf299
// 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;
    }
  }
}

#ifndef __NR_bpf
#define __NR_bpf 321
#endif

uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  *(uint32_t*)0x20000200 = 0;
  *(uint32_t*)0x20000204 = 0xe;
  *(uint64_t*)0x20000208 = 0x20000580;
  memcpy(
      (void*)0x20000580,
      "\xb7\x02\x00\x00\x02\x00\x55\x32\xbf\xa3\x00\x00\x00\x00\x00\x00\x07\x03"
      "\x00\x00\xfd\xfd\xff\xf6\x7a\x40\xe1\x05\x7a\x59\x35\xde\x23\x24\xdb\xac"
      "\x0a\xf0\xff\xd8\xff\xff\xff\x79\xa4\xf0\xff\x00\x00\x00\x00\xb7\x06\x00"
      "\x00\xff\xff\xff\xff\x2d\x64\x05\x00\x00\x00\x00\x00\x65\x04\x20\x00\x01"
      "\x00\x00\x40\x04\x04\x00\x00\x01\x00\x00\x00\xb7\x05\x00\x00\x00\x00\x00"
      "\x00\x6a\x0a\x00\xfe\x00\x00\x00\x00\x85\x00\x00\x00\x0a\x00\x01\x00\xb7"
      "\x00\x00\x00\x00\x00\x00\x00\x95\x00\x00\x20\x00\x00\x00\x00\x9c\x05\x00"
      "\x00\x00\x2c\x9f\xbc\x42\x9a\xda\xd5\xff\x4c\x6f",
      138);
  *(uint64_t*)0x20000210 = 0;
  *(uint32_t*)0x20000218 = 0;
  *(uint32_t*)0x2000021c = 0;
  *(uint64_t*)0x20000220 = 0;
  *(uint32_t*)0x20000228 = 0;
  *(uint32_t*)0x2000022c = 0;
  memset((void*)0x20000230, 0, 16);
  *(uint32_t*)0x20000240 = 0;
  *(uint32_t*)0x20000244 = 0;
  *(uint32_t*)0x20000248 = -1;
  *(uint32_t*)0x2000024c = 8;
  *(uint64_t*)0x20000250 = 0;
  *(uint32_t*)0x20000258 = 0;
  *(uint32_t*)0x2000025c = 0x10;
  *(uint64_t*)0x20000260 = 0;
  *(uint32_t*)0x20000268 = 0;
  *(uint32_t*)0x2000026c = 0;
  *(uint32_t*)0x20000270 = -1;
  *(uint32_t*)0x20000274 = 0;
  *(uint64_t*)0x20000278 = 0;
  syscall(__NR_bpf, 5ul, 0x20000200ul, 0x78ul);
  res = syscall(__NR_socket, 0x10ul, 2ul, 0);
  if (res != -1)
    r[0] = res;
  res = syscall(__NR_socket, 0x11ul, 0x800000003ul, 0);
  if (res != -1)
    r[1] = res;
  *(uint16_t*)0x20000080 = 0x11;
  memcpy((void*)0x20000082,
         "\x00\x00\x01\x00\x00\x00\x00\x00\x08\x00\x44\x94\x4e\xeb\xa7\x1a\x49"
         "\x76\xe2\x52\x92\x2c\xb1\x8f\x6e\x2e\x2a\xba\x00\x00\x00\x01\x2e\x0b"
         "\x38\x36\x00\x54\x04\xb0\xe0\x30\x1a\x4c\xe8\x75\xf2\xe3\xff\x5f\x16"
         "\x3e\xe3\x40\xb7\x67\x95\x00\x80\x00\x00\x00\x00\x00\x00\x01\x01\x01"
         "\x3c\x58\x11\x03\x9e\x15\x77\x50\x27\xec\xce\x66\xfd\x79\x2b\xbf\x0e"
         "\x5b\xf5\xff\x1b\x08\x16\xf3\xf6\xdb\x1c\x00\x01\x00\x00\x00\x00\x00"
         "\x00\x00\x49\x74\x00\x00\x00\x00\x00\x00\x00\x06\xad\x8e\x5e\xcc\x32"
         "\x6d\x3a\x09\xff\xc2\xc6\x54",
         126);
  syscall(__NR_bind, r[1], 0x20000080ul, 0x80ul);
  *(uint32_t*)0x20000000 = 0x14;
  res = syscall(__NR_getsockname, r[1], 0x20005400ul, 0x20000000ul);
  if (res != -1)
    r[2] = *(uint32_t*)0x20005404;
  *(uint64_t*)0x20000180 = 0;
  *(uint32_t*)0x20000188 = 0;
  *(uint64_t*)0x20000190 = 0x20000140;
  *(uint64_t*)0x20000140 = 0x200005c0;
  memcpy((void*)0x200005c0,
         "\x40\x01\x00\x00\x24\x00\x0b\x0f\x00\x00\x00\x00\x00\x00\xf1\x0f\xeb"
         "\xca\x05\x46",
         20);
  *(uint32_t*)0x200005d4 = r[2];
  memcpy((void*)0x200005d8,
         "\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x0a\x00\x01\x00\x6e"
         "\x65\x74\x65\x6d\x00\x00\x00\x10\x01\x02\x00\xca\x00\x00\x00",
         32);
  *(uint64_t*)0x20000148 = 0x140;
  *(uint64_t*)0x20000198 = 1;
  *(uint64_t*)0x200001a0 = 0;
  *(uint64_t*)0x200001a8 = 0;
  *(uint32_t*)0x200001b0 = 0;
  syscall(__NR_sendmsg, r[0], 0x20000180ul, 0ul);
  res = syscall(__NR_socket, 0xaul, 1ul, 0x84);
  if (res != -1)
    r[3] = res;
  *(uint32_t*)0x20000000 = 0;
  *(uint16_t*)0x20000004 = 2;
  *(uint16_t*)0x20000006 = htobe16(0);
  *(uint32_t*)0x20000008 = htobe32(0);
  *(uint32_t*)0x20000084 = 0;
  *(uint16_t*)0x20000088 = 0;
  *(uint32_t*)0x2000008a = 0x400;
  *(uint32_t*)0x2000008e = 0;
  *(uint32_t*)0x20000092 = 0x32;
  *(uint32_t*)0x20000096 = 0;
  *(uint8_t*)0x2000009a = 0;
  syscall(__NR_setsockopt, r[3], 0x84, 9, 0x20000000ul, 0x9cul);
  *(uint16_t*)0x204b8fe4 = 0xa;
  *(uint16_t*)0x204b8fe6 = htobe16(0x4e23);
  *(uint32_t*)0x204b8fe8 = htobe32(0);
  *(uint64_t*)0x204b8fec = htobe64(0);
  *(uint64_t*)0x204b8ff4 = htobe64(1);
  *(uint32_t*)0x204b8ffc = 0;
  syscall(__NR_bind, r[3], 0x204b8fe4ul, 0x1cul);
  memset((void*)0x20847fff, 88, 1);
  *(uint16_t*)0x2005ffe4 = 0xa;
  *(uint16_t*)0x2005ffe6 = htobe16(0x4e23);
  *(uint32_t*)0x2005ffe8 = htobe32(0);
  *(uint64_t*)0x2005ffec = htobe64(0);
  *(uint64_t*)0x2005fff4 = htobe64(1);
  *(uint32_t*)0x2005fffc = 0;
  syscall(__NR_sendto, r[3], 0x20847ffful, 0x34000ul, 0ul, 0x2005ffe4ul,
          0x1cul);
}
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;
}