linux-kernel - "kernel BUG in update_and_free_pages

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Message-ID: <CAKHoSAvRgb5FW1zqNLJ1CmFsfTpA-b4=pcqMUNWSDT4Z3=UNTQ@mail.gmail.com>
Date: Wed, 15 Jan 2025 10:17:30 +0800
From: cheung wall <zzqq0103.hey@...il.com>
To: Muchun Song <muchun.song@...ux.dev>, Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: "kernel BUG in update_and_free_pages_bulk" in Linux Kernel v6.12-rc4

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