"kernel BUG in update_and_free_pages_bulk" in Linux Kernel v6.12-rc4

[cheung wall]

Hello,

I am writing to report a potential vulnerability identified in the
Linux Kernel version v6.12-rc4. This vulnerability was discovered
while i was testing the kernel.

Linux Kernel Repository Git Commit:
42f7652d3eb527d03665b09edac47f85fb600924 (tag: v6.12-rc4)

Bug Location: update_and_free_pages_bulk+0x657/0x810 mm/hugetlb.c:1860

Bug report: https://pastebin.com/q8J3z5Gq

Entire Log: https://pastebin.com/AQF101kq

Thank you for your time and attention.

Best regards

Wall