// https://syzkaller.appspot.com/bug?id=2982363e4a8e7685439d7318bc4a00b3a7414895
// 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 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)) {
  }
  //  ioctl$COMEDI_DEVCONFIG arguments: [
  //    fd: fd_comedi (resource)
  //    cmd: const = 0x40946400 (4 bytes)
  //    arg: nil
  //  ]
  syscall(__NR_ioctl, /*fd=*/(intptr_t)-1, /*cmd=*/0x40946400, /*arg=*/0ul);
  //  ioctl$COMEDI_DEVCONFIG arguments: [
  //    fd: fd_comedi (resource)
  //    cmd: const = 0x40946400 (4 bytes)
  //    arg: nil
  //  ]
  syscall(__NR_ioctl, /*fd=*/(intptr_t)-1, /*cmd=*/0x40946400, /*arg=*/0ul);
  //  mknodat$md arguments: [
  //    dirfd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 6d 64 30 00} (length 0x6)
  //    }
  //    mode: const = 0x6180 (8 bytes)
  //    dev: proc = 0x0 (4 bytes)
  //  ]
  memcpy((void*)0x200000000940, "./md0\000", 6);
  syscall(__NR_mknodat, /*dirfd=*/0xffffffffffffff9cul,
          /*file=*/0x200000000940ul, /*mode=*/0x6180ul, /*dev=*/0x900);
  //  openat$md_node arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 6d 64 30 00} (length 0x6)
  //    }
  //    flags: md_open_flags = 0x2 (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd_md
  memcpy((void*)0x200000000980, "./md0\000", 6);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                /*file=*/0x200000000980ul, /*flags=O_RDWR*/ 2, /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  ioctl$SET_ARRAY_INFO arguments: [
  //    fd: fd_md (resource)
  //    cmd: const = 0x40480923 (4 bytes)
  //    arg: ptr[in, mdu_array_info_t] {
  //      mdu_array_info_t {
  //        major_version: int32 = 0x0 (4 bytes)
  //        minor_version: md_minor_versions = 0x5a (4 bytes)
  //        patch_version: const = 0x0 (4 bytes)
  //        ctime: int32 = 0xfffffffe (4 bytes)
  //        level: md_levels = 0x6 (4 bytes)
  //        size: int32 = 0x800 (4 bytes)
  //        nr_disks: const = 0x0 (4 bytes)
  //        raid_disks: int32 = 0x20003 (4 bytes)
  //        md_minor: const = 0x0 (4 bytes)
  //        not_persistent: int32 = 0xfffffffe (4 bytes)
  //        utime: const = 0x0 (4 bytes)
  //        state: md_array_state = 0x100 (4 bytes)
  //        active_disks: const = 0x0 (4 bytes)
  //        working_disks: const = 0x0 (4 bytes)
  //        failed_disks: const = 0x0 (4 bytes)
  //        spare_disks: const = 0x0 (4 bytes)
  //        layout: md_layouts = 0x13 (4 bytes)
  //        chunk_size: md_chunk_sizes = 0x10000 (4 bytes)
  //      }
  //    }
  //  ]
  *(uint32_t*)0x2000000009c0 = 0;
  *(uint32_t*)0x2000000009c4 = 0x5a;
  *(uint32_t*)0x2000000009c8 = 0;
  *(uint32_t*)0x2000000009cc = 0xfffffffe;
  *(uint32_t*)0x2000000009d0 = 6;
  *(uint32_t*)0x2000000009d4 = 0x800;
  *(uint32_t*)0x2000000009d8 = 0;
  *(uint32_t*)0x2000000009dc = 0x20003;
  *(uint32_t*)0x2000000009e0 = 0;
  *(uint32_t*)0x2000000009e4 = 0xfffffffe;
  *(uint32_t*)0x2000000009e8 = 0;
  *(uint32_t*)0x2000000009ec = 0x100;
  *(uint32_t*)0x2000000009f0 = 0;
  *(uint32_t*)0x2000000009f4 = 0;
  *(uint32_t*)0x2000000009f8 = 0;
  *(uint32_t*)0x2000000009fc = 0;
  *(uint32_t*)0x200000000a00 = 0x13;
  *(uint32_t*)0x200000000a04 = 0x10000;
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x40480923,
          /*arg=*/0x2000000009c0ul);
  //  ioctl$ADD_NEW_DISK arguments: [
  //    fd: fd_md (resource)
  //    cmd: const = 0x40140921 (4 bytes)
  //    arg: ptr[in, mdu_disk_info_t] {
  //      mdu_disk_info_t {
  //        number: int32 = 0x1 (4 bytes)
  //        dev: md_member_dev {
  //          major: const = 0x1 (4 bytes)
  //          minor: proc = 0x1 (4 bytes)
  //        }
  //        raid_disk: int32 = 0x1 (4 bytes)
  //        state: md_disk_state = 0x40032 (4 bytes)
  //      }
  //    }
  //  ]
  *(uint32_t*)0x200000000a80 = 1;
  *(uint32_t*)0x200000000a84 = 1;
  *(uint32_t*)0x200000000a88 = 1;
  *(uint32_t*)0x200000000a8c = 1;
  *(uint32_t*)0x200000000a90 = 0x40032;
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x40140921,
          /*arg=*/0x200000000a80ul);
  //  ioctl$RUN_ARRAY arguments: [
  //    fd: fd_md (resource)
  //    cmd: const = 0x400c0930 (4 bytes)
  //    arg: nil
  //  ]
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x400c0930, /*arg=*/0ul);
}
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;
  loop();
  return 0;
}