linux-kernel - Re: [BUG] WARNING in shmem_rmdir in Linux kernel v6.12

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Message-Id: <20250603214812.3c0e774ffa4700f47bd1340f@linux-foundation.org>
Date: Tue, 3 Jun 2025 21:48:12 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: Luka <luka.2016.cs@...il.com>
Cc: Hugh Dickins <hughd@...gle.com>, linux-mm@...ck.org,
 linux-kernel@...r.kernel.org
Subject: Re: [BUG] WARNING in shmem_rmdir in Linux kernel v6.12

On Wed, 4 Jun 2025 12:43:01 +0800 Luka <luka.2016.cs@...il.com> wrote:

> Dear Kernel Maintainers,
> 
> I am writing to report a potential vulnerability identified in the
> upstream Linux Kernel version v6.12, corresponding to the following
> commit in the mainline repository:
> 
> Git Commit:  adc218676eef25575469234709c2d87185ca223a (tag: v6.12)
> 
> This issue was discovered during the testing of the Android 16 AOSP
> kernel, which is based on Linux kernel version 6.12, specifically from
> the AOSP kernel branch:
> 
> AOSP kernel branch: android16-6.12
> Manifest path: kernel/common.git
> Source URL:  https://android.googlesource.com/kernel/common/+/refs/heads/android16-6.12
> 
> Although this kernel branch is used in Android 16 development, its
> base is aligned with the upstream Linux v6.12 release. I observed this
> issue while conducting stability and fuzzing tests on the Android 16
> platform and identified that the root cause lies in the upstream
> codebase.

Please just include all the bug info in the email.

> 
> Bug Location: shmem_rmdir+0x48/0x84 mm/shmem.c:3733
> 
> Bug Report: https://hastebin.com/share/jazumewiya.css
> 
> Entire Log: https://hastebin.com/share/uyuyaheken.perl

Those links don't work for me.  "We're sorry, but the contents of the
bin could not be found, or it has been deleted"