// https://syzkaller.appspot.com/bug?id=1ceccb48cfa419b6901f03b84ee1272aae725f55
// 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>

#ifndef __NR_bpf
#define __NR_bpf 321
#endif

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 (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  *(uint32_t*)0x200054c0 = 3;
  *(uint32_t*)0x200054c4 = 0x16;
  *(uint64_t*)0x200054c8 = 0x20000340;
  memcpy(
      (void*)0x20000340,
      "\x81\x12\x4c\x00\x00\x00\x00\x00\x61\x13\x50\x00\x00\x00\x00\x00\xbf\x20"
      "\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x08\x00\x00\x00\x2d\x03\x01\x00"
      "\x00\x00\x00\x00\x95\x00\x00\x00\x00\x00\x00\x00\x69\x26\x00\x00\x00\x00"
      "\x00\x00\xbf\x67\x10\x00\x00\x00\x00\x00\x15\x06\x00\x00\x0f\xff\x07\x00"
      "\x67\x06\x00\x00\x20\x00\x00\x00\x6a\x02\x00\x00\x0e\xe6\x00\x00\xbf\x05"
      "\x00\x00\x00\x00\x00\x00\x3d\x35\x00\x00\x00\x00\x00\x00\x65\x07\x00\x00"
      "\x02\x00\x00\x00\x07\x07\x00\x00\x4a\x00\x00\x00\x0f\x75\x00\x00\x00\x00"
      "\x00\x00\xbf\x54\x00\x00\x00\x00\x00\x00\x07\x04\x00\x00\x04\x00\xf9\xff"
      "\x2d\x53\x01\x00\x00\x00\x00\x00\x84\x04\x00\x00\x00\x00\x00\x00\x05\x00"
      "\x00\x00\x00\x00\x00\x00\x95\x00\x00\x00\x00\x00\x00\x00\xdb\x13\xd5\xd8"
      "\xb7\x41\xf2\xcd\xaa\xbc\x83\x83\xca\xf5\x6b\x8c\x2b\x84\xa8\xd0\x95\x35"
      "\xa1\x57\xf9\x00\x5b\xd3\x8a\xdd\xaa\x65\xb9\x25\xcd\x3d\xed\x25\xb8\xb9"
      "\xe2\xa0\x95\xd2\xc5\x1e\xf4\x5c\x55\x88\xec\x78\xc7\xf3\x29\x46\xb1\x7c"
      "\xec\xfe\x54\xc5\x3a\xb5\x30\xc5\x8b\x67\x85\x1b\x7e\x0e\x82\x45\x2a\x08"
      "\x3b\x98\xa6\xaa\x76\x64\x01\x04\x7d\x15\x02\x03\xb0\x41\x7e\xde\xf3\x32"
      "\x23\x3b\x08\x1d\xf1\x89\x61\xd6\x82\x2d\x13\x3b\xf7\x2a\x4d\xe1\xcc\x08"
      "\x00\x00\x45\x37\xfc\x21\x15\x76\x84\x6a\xc6\x29\xd1\xd9\x32\x65\xba\x47"
      "\x45\x80\x04\x7a\x9d\xc8\x8d\xe3\x58\xce\x79\x57\x31\x89\x1a\x20\x31\xde"
      "\x4e\x09\x74\x0c\xc8\x55\x25\xd2\x99\x1e\xd4\x78\x5a\x97\x73\xa4\x33\xe0"
      "\xdb\x9c\x1a\x7d\x4a\xb9\xd6\x58\xce\x9c\xfd\xb4\xdb\x3b\xed\x62\xbc\xb2"
      "\xbc\x91\xdd\xcd\xfa\xc2\xe6\xd4\x42\x1c\x49\xfb\x66\x41\xcb\xf5\x69\x14"
      "\xe7\x67\x02\xf6\x73\xb5\x86\xc7\x67\x03\x00\x90\xa3\x96\x70\x93\xb0\x00"
      "\xe3\x80\x6f\x82\x5f\x1d\x0d\xa2\xa3\x04\xe0\x65\x43\xb5\x6d\x35\x23\x5d"
      "\x78\xb7\xa7\xfe\x91\x29\x71\xaa\xb8\x76\x02\x2e\x96\xf5\x14\x3b\x62\x34"
      "\xf5\xa6\xb7\x01\x69\x0b\x07\xfb\x66\x4a\x44\xe2\x2b\x72\xe8\x43\xe7\xcf"
      "\x55\xf3\x94\xcf\x75\xd1\xcd\x3e\xe7\x9a\x25\xfb\x98\xcc\x45\xb3\xfd\xe4"
      "\x3e\x42\xe1\x50\xd4\xa2\xfd\xdd\x9a\x97\x67\x74",
      480);
  *(uint64_t*)0x200054d0 = 0x20000100;
  memcpy((void*)0x20000100, "GPL\000", 4);
  *(uint32_t*)0x200054d8 = 0xe;
  *(uint32_t*)0x200054dc = 0;
  *(uint64_t*)0x200054e0 = 0;
  *(uint32_t*)0x200054e8 = 0;
  *(uint32_t*)0x200054ec = 0;
  memset((void*)0x200054f0, 0, 16);
  *(uint32_t*)0x20005500 = 0;
  *(uint32_t*)0x20005504 = 0;
  *(uint32_t*)0x20005508 = -1;
  *(uint32_t*)0x2000550c = 8;
  *(uint64_t*)0x20005510 = 0;
  *(uint32_t*)0x20005518 = 0x1c;
  *(uint32_t*)0x2000551c = 0x10;
  *(uint64_t*)0x20005520 = 0;
  *(uint32_t*)0x20005528 = 0;
  *(uint32_t*)0x2000552c = 0;
  *(uint32_t*)0x20005530 = -1;
  *(uint32_t*)0x20005534 = 0;
  *(uint64_t*)0x20005538 = 0;
  *(uint64_t*)0x20005540 = 0;
  *(uint32_t*)0x20005548 = 0x10;
  *(uint32_t*)0x2000554c = 0;
  res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200054c0ul, /*size=*/0x48ul);
  if (res != -1)
    r[0] = res;
  *(uint32_t*)0x20000240 = r[0];
  *(uint32_t*)0x20000244 = 0xfca804a0;
  *(uint32_t*)0x20000248 = 0x10;
  *(uint32_t*)0x2000024c = 0xfffffd12;
  *(uint64_t*)0x20000250 = 0x200002c0;
  memcpy((void*)0x200002c0, "\xb8\x00\x00\x05\x00\x00\x00\x00", 8);
  *(uint64_t*)0x20000258 = 0x20000300;
  *(uint32_t*)0x20000260 = 0;
  *(uint32_t*)0x20000264 = 0;
  *(uint32_t*)0x20000268 = 0;
  *(uint32_t*)0x2000026c = 0;
  *(uint64_t*)0x20000270 = 0;
  *(uint64_t*)0x20000278 = 0;
  *(uint32_t*)0x20000280 = 0;
  *(uint32_t*)0x20000284 = 0;
  *(uint32_t*)0x20000288 = 0;
  syscall(__NR_bpf, /*cmd=*/0xaul, /*arg=*/0x20000240ul, /*size=*/0x4cul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}