BUG: memory leak
unreferenced object 0xffff88804a32b200 (size 256):
  comm "syz-executor.3", pid 15276, jiffies 4298075268 (age 24.407s)
  hex dump (first 32 bytes):
    49 7b 64 33 80 88 ff ff ff af ff 20 00 00 00 00  I{d3....... ....
    ff bf ff 20 00 00 00 00 00 00 00 00 00 00 00 00  ... ............
  backtrace:
    [<0000000034f3bb96>] mas_alloc_nodes+0x36e/0x6a0
    [<00000000cb6aaf6d>] mas_preallocate+0xff/0x280
    [<000000001f025bf5>] do_mas_align_munmap.constprop.0+0x16a/0xfe0
    [<00000000dcf1c6e6>] do_mas_munmap+0x1ed/0x2c0
    [<00000000075bcc12>] mmap_region+0x21c/0x1a00
    [<00000000a196dc5a>] do_mmap+0x824/0xf40
    [<00000000680f54c6>] vm_mmap_pgoff+0x1b5/0x280
    [<000000003ebc7a1f>] ksys_mmap_pgoff+0x3cc/0x4f0
    [<000000009e86a3f6>] do_syscall_64+0x3b/0x90
    [<00000000f76c0a11>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

BUG: leak checking failed