BUG: memory leak
unreferenced object 0xffff8880191c4400 (size 256):
  comm "syz-executor.0", pid 173848, jiffies 4297857147 (age 23.730s)
  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:
    [<00000000926438a9>] mas_alloc_nodes+0x36e/0x6a0
    [<00000000a5a6eadb>] mas_node_count+0x101/0x130
    [<000000005412b563>] mas_expected_entries+0x10c/0x1b0
    [<00000000883fc385>] dup_mmap+0x433/0xf80
    [<00000000b6e8b20f>] dup_mm+0x91/0x370
    [<000000004d10ff58>] copy_process+0x6bb9/0x6d80
    [<000000004e076742>] kernel_clone+0xe7/0xa60
    [<00000000b78d31e6>] __do_sys_clone3+0x1cd/0x2d0
    [<000000003ebcd9ff>] do_syscall_64+0x3b/0x90
    [<00000000f62b33f2>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

BUG: leak checking failed