linux-kernel - Re: "kernel BUG in update_and_free_pages

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Message-Id: <BA95096F-CBD5-417D-9EC1-31C56405EDA9@linux.dev>
Date: Wed, 15 Jan 2025 11:45:01 +0800
From: Muchun Song <muchun.song@...ux.dev>
To: cheung wall <zzqq0103.hey@...il.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
 linux-mm@...ck.org,
 linux-kernel@...r.kernel.org
Subject: Re: "kernel BUG in update_and_free_pages_bulk" in Linux Kernel
 v6.12-rc4



> On Jan 15, 2025, at 10:17, cheung wall <zzqq0103.hey@...il.com> wrote:
> 
> 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.

Thanks for your report. I'll fix it later.

Thanks,
Muchun

> 
> 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