// https://syzkaller.appspot.com/bug?id=70a0950a7b09aab3fa5ea0396aef57e25eb3a7b3
// 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  *(uint32_t*)0x2000000000c0 = 0x1b;
  *(uint32_t*)0x2000000000c4 = 0;
  *(uint32_t*)0x2000000000c8 = 0;
  *(uint32_t*)0x2000000000cc = 0x8000;
  *(uint32_t*)0x2000000000d0 = 0;
  *(uint32_t*)0x2000000000d4 = -1;
  *(uint32_t*)0x2000000000d8 = 0;
  memset((void*)0x2000000000dc, 0, 16);
  *(uint32_t*)0x2000000000ec = 0;
  *(uint32_t*)0x2000000000f0 = -1;
  *(uint32_t*)0x2000000000f4 = 0;
  *(uint32_t*)0x2000000000f8 = 0;
  *(uint32_t*)0x2000000000fc = 0;
  *(uint64_t*)0x200000000100 = 0;
  *(uint32_t*)0x200000000108 = 0;
  *(uint32_t*)0x20000000010c = 0;
  res =
      syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x2000000000c0ul, /*size=*/0x48ul);
  if (res != -1)
    r[0] = res;
  *(uint32_t*)0x2000000000c0 = 0;
  *(uint32_t*)0x2000000000c4 = 0xc;
  *(uint64_t*)0x2000000000c8 = 0x200000000440;
  memcpy((void*)0x200000000440,
         "\x18\x01\x00\x00\x11\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x18"
         "\x12\x00\x00",
         20);
  *(uint32_t*)0x200000000454 = r[0];
  memcpy((void*)0x200000000458,
         "\x00\x00\x00\x00\x00\x00\x00\x00\xb7\x08\x00\x00\x00\x00\x00\x00\x7b"
         "\x8a\xf8\xff\x00\x00\x00\x00\xbf\xa2\x00\x00\x00\x00\x00\x00\x07\x02"
         "\x00\x00\xf8\xff\xff\xff\xb7\x03\x00\x00\x08\x00\x00\x00\xb7\x04\x00"
         "\x00\xf6\x00\x00\x00\x85\x00\x00\x00\x43\x00\x00\x00\x95",
         65);
  *(uint64_t*)0x2000000000d0 = 0;
  *(uint32_t*)0x2000000000d8 = 0;
  *(uint32_t*)0x2000000000dc = 0;
  *(uint64_t*)0x2000000000e0 = 0;
  *(uint32_t*)0x2000000000e8 = 0;
  *(uint32_t*)0x2000000000ec = 0;
  memset((void*)0x2000000000f0, 0, 16);
  *(uint32_t*)0x200000000100 = 0;
  *(uint32_t*)0x200000000104 = 0;
  *(uint32_t*)0x200000000108 = -1;
  *(uint32_t*)0x20000000010c = 0;
  *(uint64_t*)0x200000000110 = 0;
  *(uint32_t*)0x200000000118 = 0;
  *(uint32_t*)0x20000000011c = 0;
  *(uint64_t*)0x200000000120 = 0;
  *(uint32_t*)0x200000000128 = 0;
  *(uint32_t*)0x20000000012c = 0;
  *(uint32_t*)0x200000000130 = 0;
  *(uint32_t*)0x200000000134 = 0x24;
  *(uint64_t*)0x200000000138 = 0;
  *(uint64_t*)0x200000000140 = 0;
  *(uint32_t*)0x200000000148 = 0;
  *(uint32_t*)0x20000000014c = 0;
  *(uint32_t*)0x200000000150 = 0;
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x2000000000c0ul, /*size=*/0x90ul);
  *(uint32_t*)0x200000000300 = 0;
  *(uint32_t*)0x200000000304 = 4;
  *(uint64_t*)0x200000000308 = 0x200000000480;
  memcpy((void*)0x200000000480,
         "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x85"
         "\x00\x00\x00\x6d",
         21);
  *(uint64_t*)0x200000000310 = 0;
  *(uint32_t*)0x200000000318 = 0;
  *(uint32_t*)0x20000000031c = 0;
  *(uint64_t*)0x200000000320 = 0;
  *(uint32_t*)0x200000000328 = 0;
  *(uint32_t*)0x20000000032c = 0;
  memset((void*)0x200000000330, 0, 16);
  *(uint32_t*)0x200000000340 = 0;
  *(uint32_t*)0x200000000344 = 0;
  *(uint32_t*)0x200000000348 = -1;
  *(uint32_t*)0x20000000034c = 0;
  *(uint64_t*)0x200000000350 = 0;
  *(uint32_t*)0x200000000358 = 0;
  *(uint32_t*)0x20000000035c = 0;
  *(uint64_t*)0x200000000360 = 0;
  *(uint32_t*)0x200000000368 = 0;
  *(uint32_t*)0x20000000036c = 0;
  *(uint32_t*)0x200000000370 = -1;
  *(uint32_t*)0x200000000374 = 0;
  *(uint64_t*)0x200000000378 = 0;
  *(uint64_t*)0x200000000380 = 0;
  *(uint32_t*)0x200000000388 = 0;
  *(uint32_t*)0x20000000038c = 0;
  *(uint32_t*)0x200000000390 = 0;
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000000300ul, /*size=*/0x90ul);
  *(uint32_t*)0x200000000240 = 0x11;
  *(uint32_t*)0x200000000244 = 0xc;
  *(uint64_t*)0x200000000248 = 0x200000000440;
  *(uint64_t*)0x200000000250 = 0x200000000180;
  memcpy((void*)0x200000000180, "GPL\000", 4);
  *(uint32_t*)0x200000000258 = 0;
  *(uint32_t*)0x20000000025c = 0;
  *(uint64_t*)0x200000000260 = 0;
  *(uint32_t*)0x200000000268 = 0;
  *(uint32_t*)0x20000000026c = 0;
  memset((void*)0x200000000270, 0, 16);
  *(uint32_t*)0x200000000280 = 0;
  *(uint32_t*)0x200000000284 = 0;
  *(uint32_t*)0x200000000288 = -1;
  *(uint32_t*)0x20000000028c = 0;
  *(uint64_t*)0x200000000290 = 0;
  *(uint32_t*)0x200000000298 = 0;
  *(uint32_t*)0x20000000029c = 0;
  *(uint64_t*)0x2000000002a0 = 0;
  *(uint32_t*)0x2000000002a8 = 0;
  *(uint32_t*)0x2000000002ac = 0;
  *(uint32_t*)0x2000000002b0 = 0;
  *(uint32_t*)0x2000000002b4 = 0;
  *(uint64_t*)0x2000000002b8 = 0;
  *(uint64_t*)0x2000000002c0 = 0;
  *(uint32_t*)0x2000000002c8 = 0;
  *(uint32_t*)0x2000000002cc = 0;
  *(uint32_t*)0x2000000002d0 = 0;
  res =
      syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000000240ul, /*size=*/0x90ul);
  if (res != -1)
    r[1] = res;
  *(uint64_t*)0x200000000200 = 0x200000000300;
  memcpy((void*)0x200000000300, "sys_enter\000", 10);
  *(uint32_t*)0x200000000208 = r[1];
  *(uint32_t*)0x20000000020c = 0;
  *(uint64_t*)0x200000000210 = 0;
  syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x200000000200ul, /*size=*/0x10ul);
  memcpy((void*)0x200000001280, "./file0\000", 8);
  syscall(__NR_mkdir, /*path=*/0x200000001280ul,
          /*mode=S_IRGRP|S_IWUSR*/ 0xa0ul);
  memcpy((void*)0x200000000680, "/dev/fuse\000", 10);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                /*file=*/0x200000000680ul, /*flags=*/0x42, /*mode=*/0);
  if (res != -1)
    r[2] = res;
  memcpy((void*)0x2000000020c0, "./file0\000", 8);
  memcpy((void*)0x200000002100, "fuse\000", 5);
  memcpy((void*)0x200000000300, "fd=", 3);
  sprintf((char*)0x200000000303, "0x%016llx", (long long)r[2]);
  memcpy((void*)0x200000000315,
         ",rootmode=00000000000000000040000,user_id=", 42);
  sprintf((char*)0x20000000033f, "%020llu", (long long)0);
  memcpy((void*)0x200000000353, ",group_id=", 10);
  sprintf((char*)0x20000000035d, "%020llu", (long long)0);
  syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x2000000020c0ul,
          /*type=*/0x200000002100ul, /*flags=*/0ul, /*opts=*/0x200000000300ul);
  syscall(__NR_utime, /*filename=*/0ul, /*times=*/0ul);
  memcpy((void*)0x200000000080, "./file0\000", 8);
  memcpy((void*)0x2000000000c0, "trusted.overlay.upper\000", 22);
  syscall(__NR_lsetxattr, /*path=*/0x200000000080ul, /*name=*/0x2000000000c0ul,
          /*val=*/0ul, /*size=*/0ul, /*flags=*/0ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}