BUG: memory leak
unreferenced object 0xffff888015500a00 (size 192):
  comm "syz-executor.0", pid 7799, jiffies 4295513335 (age 20.815s)
  hex dump (first 32 bytes):
    01 00 00 00 80 88 ff ff 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000caa2394a>] kmalloc_trace+0x22/0x60
    [<000000006447c053>] hugetlb_vma_lock_alloc.part.0+0x3f/0x130
    [<000000008b8b9584>] hugetlb_reserve_pages+0x9cb/0xdf0
    [<00000000dc81ce57>] hugetlbfs_file_mmap+0x389/0x550
    [<000000007f0b16f6>] mmap_region+0x6c7/0x1a00
    [<00000000e2d6896f>] do_mmap+0x828/0xf40
    [<00000000bb6afdcf>] vm_mmap_pgoff+0x1af/0x270
    [<00000000c9c442fc>] ksys_mmap_pgoff+0x1c1/0x4f0
    [<000000009b93893a>] do_syscall_64+0x3b/0x90
    [<00000000f8e62086>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: leak checking failed