// https://syzkaller.appspot.com/bug?id=0871b48d02e776d80d6c15ece0e982af7cf2f9dd
// 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/mount.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 unsigned long long procid;

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)) {
  }
  //  openat$uhid arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 75 68 69 64 00} (length 0xa)
  //    }
  //    flags: uhid_open_flags = 0x2 (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd_uhid
  memcpy((void*)0x200000000180, "/dev/uhid\000", 10);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                /*file=*/0x200000000180ul, /*flags=O_RDWR*/ 2, /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  write$UHID_CREATE2 arguments: [
  //    fd: fd_uhid (resource)
  //    data: ptr[in, uhid_req[UHID_CREATE2, uhid_create2_req]] {
  //      uhid_req[UHID_CREATE2, uhid_create2_req] {
  //        type: const = 0xb (4 bytes)
  //        data: uhid_create2_req {
  //          name: buffer: {73 79 7a 30 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00} (length 0x80) phys: buffer: {73 79 7a 31 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00} (length 0x40) uniq: buffer: {73 79 7a
  //          30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00} (length 0x40)
  //          rd_size: len = 0x33 (2 bytes)
  //          bus: int16 = 0x5 (2 bytes)
  //          vendor: int32 = 0x46d (4 bytes)
  //          product: int32 = 0xb012 (4 bytes)
  //          version: int32 = 0x0 (4 bytes)
  //          country: int32 = 0x0 (4 bytes)
  //          rd_data: buffer: {06 00 ff 09 01 a1 01 85 10 09 01 15 00 26 ff 00
  //          75 08 95 06 81 00 09 01 91 00 85 11 09 01 95 13 81 00 09 01 91 00
  //          85 12 09 01 95 3f 81 00 09 01 91 00 c0} (length 0x33)
  //        }
  //      }
  //    }
  //    len: len = 0x14b (8 bytes)
  //  ]
  *(uint32_t*)0x200000000000 = 0xb;
  memcpy(
      (void*)0x200000000004,
      "syz0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000",
      128);
  memcpy((void*)0x200000000084,
         "syz1\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000",
         64);
  memcpy((void*)0x2000000000c4,
         "syz0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000",
         64);
  *(uint16_t*)0x200000000104 = 0x33;
  *(uint16_t*)0x200000000106 = 5;
  *(uint32_t*)0x200000000108 = 0x46d;
  *(uint32_t*)0x20000000010c = 0xb012;
  *(uint32_t*)0x200000000110 = 0;
  *(uint32_t*)0x200000000114 = 0;
  memcpy((void*)0x200000000118,
         "\x06\x00\xff\x09\x01\xa1\x01\x85\x10\x09\x01\x15\x00\x26\xff\x00\x75"
         "\x08\x95\x06\x81\x00\x09\x01\x91\x00\x85\x11\x09\x01\x95\x13\x81\x00"
         "\x09\x01\x91\x00\x85\x12\x09\x01\x95\x3f\x81\x00\x09\x01\x91\x00\xc0",
         51);
  syscall(__NR_write, /*fd=*/r[0], /*data=*/0x200000000000ul, /*len=*/0x14bul);
  //  write$UHID_INPUT2 arguments: [
  //    fd: fd_uhid (resource)
  //    data: ptr[in, uhid_req[UHID_INPUT2, uhid_input2_req]] {
  //      uhid_req[UHID_INPUT2, uhid_input2_req] {
  //        type: const = 0xc (4 bytes)
  //        data: uhid_input2_req {
  //          size: len = 0x14 (2 bytes)
  //          data: buffer: {11 ff 04 20 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00} (length 0x14)
  //        }
  //      }
  //    }
  //    len: len = 0x1a (8 bytes)
  //  ]
  *(uint32_t*)0x200000000d00 = 0xc;
  *(uint16_t*)0x200000000d04 = 0x14;
  memcpy((void*)0x200000000d06,
         "\x11\xff\x04\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x00\x00",
         20);
  syscall(__NR_write, /*fd=*/r[0], /*data=*/0x200000000d00ul, /*len=*/0x1aul);
  //  write$UHID_INPUT2 arguments: [
  //    fd: fd_uhid (resource)
  //    data: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //        union ANYUNION {
  //          ANYBLOB: buffer: {0c 00 00 00 14 00 11 ff 00 00 04 00 00 00 00 a7
  //          c9 60 14 f3 ed ab 41 00 00 6f d1 58 34 42 f6 c3 dd 76 e1 92 14 4f
  //          38 b7 0a 4a 19 53 59 7a ba 40 cf 9a 30 f3 8d d2 49 43 ad de 4f e2
  //          55 e1 e5 0d 90 39 61 c0 c7 50 95 72 7c 8b 23 de 39 70 6e dc 94 54
  //          b4 3b 5b ac 76 7a 72 af aa 1b 71 25 d6 04 6b f6 6f 69 cc 35 50 c9}
  //          (length 0x68)
  //        }
  //      }
  //    }
  //    len: len = 0x1a (8 bytes)
  //  ]
  memcpy(
      (void*)0x2000000005c0,
      "\x0c\x00\x00\x00\x14\x00\x11\xff\x00\x00\x04\x00\x00\x00\x00\xa7\xc9\x60"
      "\x14\xf3\xed\xab\x41\x00\x00\x6f\xd1\x58\x34\x42\xf6\xc3\xdd\x76\xe1\x92"
      "\x14\x4f\x38\xb7\x0a\x4a\x19\x53\x59\x7a\xba\x40\xcf\x9a\x30\xf3\x8d\xd2"
      "\x49\x43\xad\xde\x4f\xe2\x55\xe1\xe5\x0d\x90\x39\x61\xc0\xc7\x50\x95\x72"
      "\x7c\x8b\x23\xde\x39\x70\x6e\xdc\x94\x54\xb4\x3b\x5b\xac\x76\x7a\x72\xaf"
      "\xaa\x1b\x71\x25\xd6\x04\x6b\xf6\x6f\x69\xcc\x35\x50\xc9",
      104);
  syscall(__NR_write, /*fd=*/r[0], /*data=*/0x2000000005c0ul, /*len=*/0x1aul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000,
          /*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=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}