// https://syzkaller.appspot.com/bug?id=2431068eb52548f20447545f1948b727e87e720a
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <setjmp.h>
#include <signal.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>

unsigned long long procid;

static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  if (__atomic_load_n(&skip_segv, __ATOMIC_RELAXED) &&
      (addr < prog_start || addr > prog_end)) {
    _longjmp(segv_env, 1);
  }
  exit(sig);
}

static void install_segv_handler()
{
  struct sigaction sa;
  memset(&sa, 0, sizeof(sa));
  sa.sa_handler = SIG_IGN;
  syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8);
  syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8);
  memset(&sa, 0, sizeof(sa));
  sa.sa_sigaction = segv_handler;
  sa.sa_flags = SA_NODEFER | SA_SIGINFO;
  sigaction(SIGSEGV, &sa, NULL);
  sigaction(SIGBUS, &sa, NULL);
}

#define NONFAILING(...)                                                        \
  {                                                                            \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    if (_setjmp(segv_env) == 0) {                                              \
      __VA_ARGS__;                                                             \
    }                                                                          \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
  }

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms()
{
  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 long syz_open_dev(long a0, long a1, long a2)
{
  if (a0 == 0xc || a0 == 0xb) {
    char buf[128];
    sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1,
            (uint8_t)a2);
    return open(buf, O_RDWR, 0);
  } else {
    char buf[1024];
    char* hash;
    NONFAILING(strncpy(buf, (char*)a0, sizeof(buf) - 1));
    buf[sizeof(buf) - 1] = 0;
    while ((hash = strchr(buf, '#'))) {
      *hash = '0' + (char)(a1 % 10);
      a1 /= 10;
    }
    return open(buf, a2, 0);
  }
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  int i;
  for (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) {
  }
}

#define SYZ_HAVE_SETUP_TEST 1
static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
}

#define SYZ_HAVE_RESET_TEST 1
static void reset_test()
{
  int fd;
  for (fd = 3; fd < 30; fd++)
    close(fd);
}

static void execute_one();

#define WAIT_FLAGS __WALL

static void loop()
{
  int iter;
  for (iter = 0;; iter++) {
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      setup_test();
      execute_one();
      reset_test();
      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 < 5 * 1000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one()
{
  long res = 0;
  res = syscall(__NR_socket, 2, 1, 0);
  if (res != -1)
    r[0] = res;
  NONFAILING(memcpy(
      (void*)0x20000800,
      "\x66\x69\x6c\x74\x65\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00"
      "\x04\x00\x00\x40\x58\x04\x00\x00\x00\x00\x00\x00\x30\x02\x00\x00\x00\x00"
      "\x00\x00\x55\x03\x00\x00\x70\x03\x00\x00\x70\x03\x00\x00\x04\x00\x00\x00"
      "\xc3\x02\x62\x2c\xd0\xc2\x1f\xe5\x52\xfa\x54\xd5\x31\x3e\xf3\x34\xdc\xae"
      "\x98\xff\xa7\xaa\x4c\x8c\x68\xa7\x31\x35\x6e\xca\x1b\xb4\x91\xaa\xcf\x66"
      "\xdf\x03\x73\x2f\x0f\x23\xe4\x09\xb0\xef\x7d\x65\xa8\x07\x1f\x62\x6b\xe2"
      "\x40\xf2\x51\xea\xf4\x33\x26\xd3\x0a\x0c\x9f\x94\x1d\xc5\x67\xa2\x5d\x74"
      "\xdc\xa7\x96\xea\x15\xd6\x7d\x10\xa1\x3f\x3e\x35\x58\xaf\x94\x0c\x80\x58"
      "\x5f\x62\x5a\x72\x67\xeb\xda\x73\x24\x0c\x67\x9a\xff\x7b\x6b\x3a\x09\x4a"
      "\xc1\x75\x65\x67\x02\x40\x86\xdc\x99\x8f\xe9\x23\xf4\xbd\x3b\x04\xc1\x35"
      "\x92\xf2\x65\xeb\xb1\x4b\x17\x8a\x23\x4d\xc6\x97\x0d\xfa\xc4\x05\x58\x31"
      "\xea",
      217));
  NONFAILING(*(uint64_t*)0x200008d9 = 0x20000000);
  syscall(__NR_setsockopt, r[0], 0, 0x60, 0x20000800, 3);
  NONFAILING(memcpy((void*)0x20000040, "/dev/snd/seq", 13));
  syz_open_dev(0x20000040, 0, 0x101801);
  NONFAILING(*(uint32_t*)0x20000340 = 0);
  NONFAILING(*(uint32_t*)0x20000344 = 0);
  NONFAILING(*(uint32_t*)0x20000348 = 0);
  NONFAILING(memcpy((void*)0x2000034c,
                    "\x71\x75\x65\x75\x65\x31\x00\x00\x00\x00\x00\x00\x00\x00"
                    "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    "\x00\x00\x00\x00\x00\x00\x00\x00",
                    64));
  NONFAILING(*(uint32_t*)0x2000038c = 0);
  NONFAILING(*(uint8_t*)0x20000390 = 0);
  NONFAILING(*(uint8_t*)0x20000391 = 0);
  NONFAILING(*(uint8_t*)0x20000392 = 0);
  NONFAILING(*(uint8_t*)0x20000393 = 0);
  NONFAILING(*(uint8_t*)0x20000394 = 0);
  NONFAILING(*(uint8_t*)0x20000395 = 0);
  NONFAILING(*(uint8_t*)0x20000396 = 0);
  NONFAILING(*(uint8_t*)0x20000397 = 0);
  NONFAILING(*(uint8_t*)0x20000398 = 0);
  NONFAILING(*(uint8_t*)0x20000399 = 0);
  NONFAILING(*(uint8_t*)0x2000039a = 0);
  NONFAILING(*(uint8_t*)0x2000039b = 0);
  NONFAILING(*(uint8_t*)0x2000039c = 0);
  NONFAILING(*(uint8_t*)0x2000039d = 0);
  NONFAILING(*(uint8_t*)0x2000039e = 0);
  NONFAILING(*(uint8_t*)0x2000039f = 0);
  NONFAILING(*(uint8_t*)0x200003a0 = 0);
  NONFAILING(*(uint8_t*)0x200003a1 = 0);
  NONFAILING(*(uint8_t*)0x200003a2 = 0);
  NONFAILING(*(uint8_t*)0x200003a3 = 0);
  NONFAILING(*(uint8_t*)0x200003a4 = 0);
  NONFAILING(*(uint8_t*)0x200003a5 = 0);
  NONFAILING(*(uint8_t*)0x200003a6 = 0);
  NONFAILING(*(uint8_t*)0x200003a7 = 0);
  NONFAILING(*(uint8_t*)0x200003a8 = 0);
  NONFAILING(*(uint8_t*)0x200003a9 = 0);
  NONFAILING(*(uint8_t*)0x200003aa = 0);
  NONFAILING(*(uint8_t*)0x200003ab = 0);
  NONFAILING(*(uint8_t*)0x200003ac = 0);
  NONFAILING(*(uint8_t*)0x200003ad = 0);
  NONFAILING(*(uint8_t*)0x200003ae = 0);
  NONFAILING(*(uint8_t*)0x200003af = 0);
  NONFAILING(*(uint8_t*)0x200003b0 = 0);
  NONFAILING(*(uint8_t*)0x200003b1 = 0);
  NONFAILING(*(uint8_t*)0x200003b2 = 0);
  NONFAILING(*(uint8_t*)0x200003b3 = 0);
  NONFAILING(*(uint8_t*)0x200003b4 = 0);
  NONFAILING(*(uint8_t*)0x200003b5 = 0);
  NONFAILING(*(uint8_t*)0x200003b6 = 0);
  NONFAILING(*(uint8_t*)0x200003b7 = 0);
  NONFAILING(*(uint8_t*)0x200003b8 = 0);
  NONFAILING(*(uint8_t*)0x200003b9 = 0);
  NONFAILING(*(uint8_t*)0x200003ba = 0);
  NONFAILING(*(uint8_t*)0x200003bb = 0);
  NONFAILING(*(uint8_t*)0x200003bc = 0);
  NONFAILING(*(uint8_t*)0x200003bd = 0);
  NONFAILING(*(uint8_t*)0x200003be = 0);
  NONFAILING(*(uint8_t*)0x200003bf = 0);
  NONFAILING(*(uint8_t*)0x200003c0 = 0);
  NONFAILING(*(uint8_t*)0x200003c1 = 0);
  NONFAILING(*(uint8_t*)0x200003c2 = 0);
  NONFAILING(*(uint8_t*)0x200003c3 = 0);
  NONFAILING(*(uint8_t*)0x200003c4 = 0);
  NONFAILING(*(uint8_t*)0x200003c5 = 0);
  NONFAILING(*(uint8_t*)0x200003c6 = 0);
  NONFAILING(*(uint8_t*)0x200003c7 = 0);
  NONFAILING(*(uint8_t*)0x200003c8 = 0);
  NONFAILING(*(uint8_t*)0x200003c9 = 0);
  NONFAILING(*(uint8_t*)0x200003ca = 0);
  NONFAILING(*(uint8_t*)0x200003cb = 0);
  syscall(__NR_ioctl, -1, 0x408c5333, 0x20000340);
  NONFAILING(memcpy((void*)0x200000c0, "/dev/snapshot", 14));
  syscall(__NR_openat, 0xffffffffffffff9c, 0x200000c0, 0x80800, 0);
  NONFAILING(memcpy((void*)0x20000100, "./file0", 8));
  syscall(__NR_lstat, 0x20000100, 0x20000140);
  NONFAILING(memcpy((void*)0x200001c0, "/selinux/create", 16));
  syscall(__NR_openat, 0xffffffffffffff9c, 0x200001c0, 2, 0);
  syscall(__NR_timer_delete, 0);
}
int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  install_segv_handler();
  for (procid = 0; procid < 8; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}