linux-kernel - Re: [REGRESSION][BISECTED] erroneous buffer overflow detected in bch2_xattr

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Message-Id: <E8E64A72-3C1C-40D2-9F07-415F6B8F476E@toblux.com>
Date: Thu, 3 Oct 2024 15:07:52 +0200
From: Thorsten Blum <thorsten.blum@...lux.com>
To: Jan Hendrik Farr <kernel@...rr.cc>
Cc: Kees Cook <kees@...nel.org>,
 kent.overstreet@...ux.dev,
 regressions@...ts.linux.dev,
 linux-bcachefs@...r.kernel.org,
 linux-hardening@...r.kernel.org,
 linux-kernel@...r.kernel.org,
 ardb@...nel.org,
 morbo@...gle.com
Subject: Re: [REGRESSION][BISECTED] erroneous buffer overflow detected in
 bch2_xattr_validate

On 3. Oct 2024, at 13:33, Jan Hendrik Farr <kernel@...rr.cc> wrote:
>> [...]
> 
> This issue is now fixed on the llvm main branch:
> https://github.com/llvm/llvm-project/commit/882457a2eedbe6d53161b2f78fcf769fc9a93e8a

Thanks!

Do you know if it also fixes the different sizes here:
https://godbolt.org/z/vvK9PE1Yq

I ran out of disk space when compiling llvm :0

> So presumably this will go into 19.1.2, not sure what this means for
> distros that ship clang 18. Will they have to be notified to backport
> this?
> 
> Best Regards
> Jan