// https://syzkaller.appspot.com/bug?id=f3c29707e8433dfca34d8ac14df7541391aedd0b
// 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 long syz_open_dev(volatile long a0, volatile long a1, volatile 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 {
    unsigned long nb = a1;
    char buf[1024];
    char* hash;
    strncpy(buf, (char*)a0, sizeof(buf) - 1);
    buf[sizeof(buf) - 1] = 0;
    while ((hash = strchr(buf, '#'))) {
      *hash = '0' + (char)(nb % 10);
      nb /= 10;
    }
    return open(buf, a2 & ~O_CREAT, 0);
  }
}

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)) {
  }
  //  sendmsg$TIPC_NL_MEDIA_SET arguments: [
  //    fd: sock_nl_generic (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_t[genl_tipc2_family_id,
  //    genlmsghdr_t[TIPC_NL_MEDIA_SET], tipc_nl_policy]]] {
  //      msghdr_netlink[netlink_msg_t[genl_tipc2_family_id,
  //      genlmsghdr_t[TIPC_NL_MEDIA_SET], tipc_nl_policy]] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_t[genl_tipc2_family_id,
  //        genlmsghdr_t[TIPC_NL_MEDIA_SET], tipc_nl_policy]]] {
  //          iovec[in, netlink_msg_t[genl_tipc2_family_id,
  //          genlmsghdr_t[TIPC_NL_MEDIA_SET], tipc_nl_policy]] {
  //            addr: ptr[inout, array[ANYUNION]] {
  //              array[ANYUNION] {
  //                union ANYUNION {
  //                  ANYBLOB: buffer: {00 04 26 bd 70 00 fc db df 25 0c 00 00
  //                  00 34 00 09 80 08 00 02 00 00 10 00 00 08 00 01 00 fb ff
  //                  ff ff 08 00 01 00 ff ff ff 7f 08 00 02 00 d6 3c 00 00 08
  //                  00 01 00 04 00 00 00 08 00 01 00 09 00 00 00 2c 01 01 80
  //                  0d 00 01 00 75 64 70 3a 73 79 7a 32 00 00 00 00 38 00 04
  //                  00 14 00 01 00 02 00 4e 23 ac 1e 00 01 00 00 00 00 00 00
  //                  00 00 20 00 02 00 0a 00 4e 22 7f ff ff ff fc 00 00 00 00
  //                  00 00 00 00 00 00 00 00 00 00 00 01 00 00 80 08 00 03 00
  //                  04 00 00 00 38 00 04 00 20 00 01 00 0a 00 4e 20 00 00 00
  //                  09 ff 02 00 00 00 00 00 00 00 00 00 00 00 00 00 01 04 00
  //                  00 00 14 00 02 00 02 00 4e 24 00 00 00 00 00 00 00 00 00
  //                  00 00 00 4c 00 02 80 08 00 03 00 ff 01 00 00 08 00 04 00
  //                  01 04 00 00 08 00 03 00 09 00 00 00 08 00 02 00 f6 00 00
  //                  00 08 00 01 00 1c 00 00 00 08 00 02 00 01 00 00 00 08 00
  //                  01 00 1a 00 00 00 08 00 03 00 09 00 00 00 08 00 01 00 17
  //                  00 00 00 54 00 02 80 08 00 01 00 1c 00 00 00 08} (length
  //                  0x127)
  //                }
  //              }
  //            }
  //            len: len = 0x2d0 (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x40408c1 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x40 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000340 = 0;
  *(uint32_t*)0x200000000348 = 0;
  *(uint64_t*)0x200000000350 = 0x200000000300;
  *(uint64_t*)0x200000000300 = 0x200000000440;
  memcpy(
      (void*)0x200000000440,
      "\x00\x04\x26\xbd\x70\x00\xfc\xdb\xdf\x25\x0c\x00\x00\x00\x34\x00\x09\x80"
      "\x08\x00\x02\x00\x00\x10\x00\x00\x08\x00\x01\x00\xfb\xff\xff\xff\x08\x00"
      "\x01\x00\xff\xff\xff\x7f\x08\x00\x02\x00\xd6\x3c\x00\x00\x08\x00\x01\x00"
      "\x04\x00\x00\x00\x08\x00\x01\x00\x09\x00\x00\x00\x2c\x01\x01\x80\x0d\x00"
      "\x01\x00\x75\x64\x70\x3a\x73\x79\x7a\x32\x00\x00\x00\x00\x38\x00\x04\x00"
      "\x14\x00\x01\x00\x02\x00\x4e\x23\xac\x1e\x00\x01\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x20\x00\x02\x00\x0a\x00\x4e\x22\x7f\xff\xff\xff\xfc\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x80\x08\x00"
      "\x03\x00\x04\x00\x00\x00\x38\x00\x04\x00\x20\x00\x01\x00\x0a\x00\x4e\x20"
      "\x00\x00\x00\x09\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x01\x04\x00\x00\x00\x14\x00\x02\x00\x02\x00\x4e\x24\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x4c\x00\x02\x80\x08\x00\x03\x00\xff\x01"
      "\x00\x00\x08\x00\x04\x00\x01\x04\x00\x00\x08\x00\x03\x00\x09\x00\x00\x00"
      "\x08\x00\x02\x00\xf6\x00\x00\x00\x08\x00\x01\x00\x1c\x00\x00\x00\x08\x00"
      "\x02\x00\x01\x00\x00\x00\x08\x00\x01\x00\x1a\x00\x00\x00\x08\x00\x03\x00"
      "\x09\x00\x00\x00\x08\x00\x01\x00\x17\x00\x00\x00\x54\x00\x02\x80\x08\x00"
      "\x01\x00\x1c\x00\x00\x00\x08",
      295);
  *(uint64_t*)0x200000000308 = 0x2d0;
  *(uint64_t*)0x200000000358 = 1;
  *(uint64_t*)0x200000000360 = 0;
  *(uint64_t*)0x200000000368 = 0;
  *(uint32_t*)0x200000000370 = 0x40408c1;
  syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0x200000000340ul,
          /*f=MSG_DONTWAIT*/ 0x40ul);
  //  syz_open_dev$evdev arguments: [
  //    dev: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 69 6e 70 75 74 2f 65 76 65 6e 74 23 00}
  //      (length 0x12)
  //    }
  //    id: intptr = 0x2 (8 bytes)
  //    flags: open_flags = 0x8a2b81 (8 bytes)
  //  ]
  //  returns fd_evdev
  memcpy((void*)0x200000000000, "/dev/input/event#\000", 18);
  res = -1;
  res = syz_open_dev(
      /*dev=*/0x200000000000, /*id=*/2,
      /*flags=O_TRUNC|O_NONBLOCK|O_NOFOLLOW|O_NOCTTY|O_EXCL|O_CLOEXEC|0x802001*/
      0x8a2b81);
  if (res != -1)
    r[0] = res;
  //  write$char_usb arguments: [
  //    fd: fd_char_usb (resource)
  //    buf: ptr[in, buffer] {
  //      buffer: {e2} (length 0x1)
  //    }
  //    count: len = 0x12d8 (8 bytes)
  //  ]
  memset((void*)0x200000000040, 226, 1);
  syscall(__NR_write, /*fd=*/r[0], /*buf=*/0x200000000040ul,
          /*count=*/0x12d8ul);
}
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;
}