// https://syzkaller.appspot.com/bug?id=61035e9fe792a27fab0b660ab9ea53b69252c876
// 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>

#ifndef __NR_bpf
#define __NR_bpf 321
#endif

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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0x0};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  mkdirat arguments: [
  //    fd: fd_dir (resource)
  //    path: ptr[in, buffer] {
  //      buffer: {2e 2f 73 65 63 00} (length 0x6)
  //    }
  //    mode: open_mode = 0x1ff (8 bytes)
  //  ]
  memcpy((void*)0x200000000000, "./sec\000", 6);
  syscall(
      __NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x200000000000ul,
      /*mode=S_IXOTH|S_IWOTH|S_IROTH|S_IXGRP|S_IWGRP|S_IRGRP|S_IXUSR|S_IWUSR|0x100*/
      0x1fful);
  //  mount arguments: [
  //    src: nil
  //    dst: ptr[in, buffer] {
  //      buffer: {2e 2f 73 65 63 00} (length 0x6)
  //    }
  //    type: ptr[in, buffer] {
  //      buffer: {73 65 63 75 72 69 74 79 66 73 00} (length 0xb)
  //    }
  //    flags: mount_flags = 0x0 (8 bytes)
  //    data: nil
  //  ]
  memcpy((void*)0x200000000040, "./sec\000", 6);
  memcpy((void*)0x200000000080, "securityfs\000", 11);
  syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x200000000040ul,
          /*type=*/0x200000000080ul, /*flags=*/0ul, /*data=*/0ul);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: nil
  //    flags: open_flags = 0x0 (4 bytes)
  //    mode: open_mode = 0x0 (2 bytes)
  //  ]
  //  returns fd
  syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0ul, /*flags=*/0,
          /*mode=*/0);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 73 65 63 2f 69 6d 61 2f 62 69 6e 61 72 79 5f 72 75 6e
  //      74 69 6d 65 5f 6d 65 61 73 75 72 65 6d 65 6e 74 73 00} (length 0x26)
  //    }
  //    flags: open_flags = 0x0 (4 bytes)
  //    mode: open_mode = 0x0 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000001180, "./sec/ima/binary_runtime_measurements\000",
         38);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000001180ul,
                /*flags=*/0, /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  close arguments: [
  //    fd: fd (resource)
  //  ]
  syscall(__NR_close, /*fd=*/r[0]);
  //  openat$dm_control arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 6d 61 70 70 65 72 2f 63 6f 6e 74 72 6f 6c 00}
  //      (length 0x14)
  //    }
  //    flags: open_flags = 0x883 (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd_dm_ctl
  memcpy((void*)0x2000000001c0, "/dev/mapper/control\000", 20);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                /*file=*/0x2000000001c0ul,
                /*flags=O_NONBLOCK|O_EXCL|O_RDWR|O_WRONLY*/ 0x883, /*mode=*/0);
  if (res != -1)
    r[1] = res;
  //  ioctl$DM_DEV_CREATE arguments: [
  //    fd: fd_dm_ctl (resource)
  //    cmd: const = 0xc138fd03 (4 bytes)
  //    arg: ptr[inout, dm_ioctl_t[dm_id_create, void, const[0, int32], const[0,
  //    int32]]] {
  //      dm_ioctl_t[dm_id_create, void, const[0, int32], const[0, int32]] {
  //        version_major: const = 0x4 (4 bytes)
  //        version_minor: const = 0x0 (4 bytes)
  //        version_patch: const = 0x0 (4 bytes)
  //        data_size: bytesize = 0x138 (4 bytes)
  //        data_start: offsetof = 0x138 (4 bytes)
  //        target_count: const = 0x0 (4 bytes)
  //        open_count: const = 0x0 (4 bytes)
  //        flags: dm_ioctl_flags = 0x0 (4 bytes)
  //        event_nr: const = 0x0 (4 bytes)
  //        padding: const = 0x0 (4 bytes)
  //        id: dm_id_create {
  //          dev: dm_dev_number (resource)
  //          name: dm_dev_name {
  //            prefix: buffer: {73 79 7a} (length 0x3)
  //            proc: proc = 0x0 (1 bytes)
  //            slot: buffer: {31 00} (length 0x2)
  //            pad = 0x0 (122 bytes)
  //          }
  //          uuid: union dm_dev_uuid_opt {
  //            none: const = 0x0 (1 bytes)
  //          }
  //        }
  //        data: buffer: {} (length 0x0)
  //      }
  //    }
  //  ]
  *(uint32_t*)0x200000000200 = 4;
  *(uint32_t*)0x200000000204 = 0;
  *(uint32_t*)0x200000000208 = 0;
  *(uint32_t*)0x20000000020c = 0x138;
  *(uint32_t*)0x200000000210 = 0x138;
  *(uint32_t*)0x200000000214 = 0;
  *(uint32_t*)0x200000000218 = 0;
  *(uint32_t*)0x20000000021c = 0;
  *(uint32_t*)0x200000000220 = 0;
  *(uint32_t*)0x200000000224 = 0;
  memcpy((void*)0x200000000230, "syz", 3);
  *(uint8_t*)0x200000000233 = 0x61;
  memcpy((void*)0x200000000234, "1\000", 2);
  *(uint8_t*)0x2000000002b0 = 0;
  res = syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0xc138fd03,
                /*arg=*/0x200000000200ul);
  if (res != -1)
    r[2] = *(uint64_t*)0x200000000228;
  //  bpf$PROG_LOAD arguments: [
  //    cmd: const = 0x5 (8 bytes)
  //    arg: nil
  //    size: len = 0x0 (8 bytes)
  //  ]
  //  returns fd_bpf_prog
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0ul, /*size=*/0ul);
  //  ioctl$DM_TABLE_LOAD arguments: [
  //    fd: fd_dm_ctl (resource)
  //    cmd: const = 0xc138fd09 (4 bytes)
  //    arg: ptr[inout, dm_ioctl_t[dm_id_lookup, array[dm_target, 1], len[data,
  //    int32], const[0, int32]]] {
  //      dm_ioctl_t[dm_id_lookup, array[dm_target, 1], len[data, int32],
  //      const[0, int32]] {
  //        version_major: const = 0x4 (4 bytes)
  //        version_minor: const = 0x0 (4 bytes)
  //        version_patch: const = 0x0 (4 bytes)
  //        data_size: bytesize = 0x1b0 (4 bytes)
  //        data_start: offsetof = 0x138 (4 bytes)
  //        target_count: len = 0x1 (4 bytes)
  //        open_count: const = 0x0 (4 bytes)
  //        flags: dm_ioctl_flags = 0x0 (4 bytes)
  //        event_nr: const = 0x0 (4 bytes)
  //        padding: const = 0x0 (4 bytes)
  //        id: union dm_id_lookup {
  //          by_dev: dm_id_by_dev {
  //            dev: dm_dev_number (resource)
  //            pad = 0x0 (264 bytes)
  //          }
  //        }
  //        data: array[dm_target] {
  //          union dm_target {
  //            snapshot: dm_target_spec_t[dm_target_snapshot,
  //            dm_snapshot_params] {
  //              sector_start: const = 0x0 (8 bytes)
  //              length: dm_lengths = 0x888 (8 bytes)
  //              status: const = 0x0 (4 bytes)
  //              next: bytesize = 0x0 (4 bytes)
  //              target_type: buffer: {73 6e 61 70 73 68 6f 74 2d 6d 65 72 67
  //              65 00 00} (length 0x10) params: dm_snapshot_params {
  //                origin: union dm_dev {
  //                  ram: dm_dev_proc_t["/dev/ram", 2] {
  //                    prefix: buffer: {2f 64 65 76 2f 72 61 6d} (length 0x8)
  //                    id: proc = 0x1 (1 bytes)
  //                  }
  //                }
  //                sp0: const = 0x20 (1 bytes)
  //                cow: union dm_dev {
  //                  ram: dm_dev_proc_t["/dev/ram", 2] {
  //                    prefix: buffer: {2f 64 65 76 2f 72 61 6d} (length 0x8)
  //                    id: proc = 0x1 (1 bytes)
  //                  }
  //                }
  //                sp1: const = 0x20 (1 bytes)
  //                pers: buffer: {70} (length 0x1)
  //                sp2: const = 0x20 (1 bytes)
  //                chunk: buffer: {37} (length 0x1)
  //                feat: buffer: {20 31 20 64 69 73 63 61 72 64 5f 7a 65 72 6f
  //                65 73 5f 63 6f 77} (length 0x15)
  //              }
  //              z: const = 0x0 (1 bytes)
  //            }
  //          }
  //        }
  //      }
  //    }
  //  ]
  *(uint32_t*)0x200000001640 = 4;
  *(uint32_t*)0x200000001644 = 0;
  *(uint32_t*)0x200000001648 = 0;
  *(uint32_t*)0x20000000164c = 0x1b0;
  *(uint32_t*)0x200000001650 = 0x138;
  *(uint32_t*)0x200000001654 = 1;
  *(uint32_t*)0x200000001658 = 0;
  *(uint32_t*)0x20000000165c = 0;
  *(uint32_t*)0x200000001660 = 0;
  *(uint32_t*)0x200000001664 = 0;
  *(uint64_t*)0x200000001668 = r[2];
  *(uint64_t*)0x200000001778 = 0;
  *(uint64_t*)0x200000001780 = 0x888;
  *(uint32_t*)0x200000001788 = 0;
  *(uint32_t*)0x20000000178c = 0;
  memcpy((void*)0x200000001790, "snapshot-merge\000\000", 16);
  memcpy((void*)0x2000000017a0, "/dev/ram", 8);
  *(uint8_t*)0x2000000017a8 = 0x31;
  *(uint8_t*)0x2000000017a9 = 0x20;
  memcpy((void*)0x2000000017aa, "/dev/ram", 8);
  *(uint8_t*)0x2000000017b2 = 0x31;
  *(uint8_t*)0x2000000017b3 = 0x20;
  memset((void*)0x2000000017b4, 112, 1);
  *(uint8_t*)0x2000000017b5 = 0x20;
  memset((void*)0x2000000017b6, 55, 1);
  memcpy((void*)0x2000000017b7, " 1 discard_zeroes_cow", 21);
  *(uint8_t*)0x2000000017cc = 0;
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xc138fd09,
          /*arg=*/0x200000001640ul);
}
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;
}