// https://syzkaller.appspot.com/bug?id=2d5e8c0f834f6a2453bfe3eb0a38beabed830169
// 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 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;
    }
  }
}

void execute_one(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  mq_open arguments: [
  //    name: ptr[in, buffer] {
  //      buffer: {62 61 74 61 64 76 5f 73 6c 61 76 65 5f 31 00 89 2f 3e 88 57
  //      d4 67 77 11 d5 3e 48 91 05 2c f1 91 22 07 bb b9 4d 87 22 7d e0 34 c5
  //      ee 77 0b 79 06 1d d2 d0 ce cd 31 67 e4 6f 58 bc ba 69 bc 4b 38 1a ca
  //      da 47 bf 78 99 2b 1c 94 e1 df 7c 93 71 a3 c7 27 77 f2 00 ac 78 00 45
  //      07 01} (length 0x5b)
  //    }
  //    flags: mq_open_flags = 0x6c9f928deea10f50 (8 bytes)
  //    mode: open_mode = 0x30 (8 bytes)
  //    attr: nil
  //  ]
  //  returns fd_mq
  memcpy((void*)0x200000000840,
         "batadv_slave_1\000\211/"
         ">\210W\324gw\021\325>H\221\005,\361\221\"\a\273\271M\207\"}"
         "\3404\305\356w\vy\006\035\322\320\316\3151g\344oX\274\272i\274K8\032"
         "\312\332G\277x\231+\034\224\341\337|"
         "\223q\243\307\'w\362\000\254x\000E\a\001",
         91);
  syscall(__NR_mq_open, /*name=*/0x200000000840ul,
          /*flags=O_CREAT|O_NONBLOCK|0x6c9f928deea10710*/ 0x6c9f928deea10f50ul,
          /*mode=S_IWGRP|S_IRGRP*/ 0x30ul, /*attr=*/0ul);
  //  mq_open arguments: [
  //    name: ptr[in, buffer] {
  //      buffer: {62 61 74 61 64 76 5f 73 6c 61 76 65 5f 31 00 89 2f 3e 88 57
  //      d4 67 77 11 d5 3e 48 91 05 2c f1 91 22 07 bb b9 4d 87 22 7d e0 34 c5
  //      ee 77 0b 79 06 1d d2 d0 ce cd 31 67 e4 6f 58 bc ba 69 bc 4b 38 1a ca
  //      da 47 bf 78 99 2b 1c 94 e1 df 7c 93 71 a3 c7 27 77 f2 00 ac 78 00 45
  //      07 01} (length 0x5b)
  //    }
  //    flags: mq_open_flags = 0x6c9f928deea10f50 (8 bytes)
  //    mode: open_mode = 0x30 (8 bytes)
  //    attr: nil
  //  ]
  //  returns fd_mq
  memcpy((void*)0x200000000840,
         "batadv_slave_1\000\211/"
         ">\210W\324gw\021\325>H\221\005,\361\221\"\a\273\271M\207\"}"
         "\3404\305\356w\vy\006\035\322\320\316\3151g\344oX\274\272i\274K8\032"
         "\312\332G\277x\231+\034\224\341\337|"
         "\223q\243\307\'w\362\000\254x\000E\a\001",
         91);
  syscall(__NR_mq_open, /*name=*/0x200000000840ul,
          /*flags=O_CREAT|O_NONBLOCK|0x6c9f928deea10710*/ 0x6c9f928deea10f50ul,
          /*mode=S_IWGRP|S_IRGRP*/ 0x30ul, /*attr=*/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;
}