BUG: memory leak
unreferenced object 0xffff888042ead200 (size 256):
  comm "syz-executor.5", pid 11710, jiffies 4296084879 (age 20.605s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 00 00 00 00 05 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000008ab8e0e8>] mas_alloc_nodes+0x36e/0x6a0
    [<00000000b30f4b3e>] mas_node_count+0x101/0x130
    [<000000009ea599e2>] mas_expected_entries+0x10c/0x1b0
    [<0000000018a40414>] dup_mmap+0x433/0xf80
    [<000000007c89c8f0>] dup_mm+0x91/0x370
    [<00000000b68cd5a7>] copy_process+0x697e/0x6da0
    [<000000000fba345a>] kernel_clone+0xe7/0xa60
    [<00000000a5976229>] __do_sys_fork+0x8a/0xc0
    [<000000005eb420c3>] do_syscall_64+0x3b/0x90
    [<00000000fe74e977>] entry_SYSCALL_64_after_hwframe+0x44/0xae

BUG: leak checking failed