netdev - Re: [PATCH net-next v3 1/7] overflow: add DEFINE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CANiq72m9ZEVkP76FMFOnPYkA8ih4Mq72HtW9AbrJ-JPy9ku3jw@mail.gmail.com>
Date: Fri, 18 Aug 2023 13:10:07 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Przemek Kitszel <przemyslaw.kitszel@...el.com>, kernel test robot <lkp@...el.com>, 
	Yujie Liu <yujie.liu@...el.com>, Philip Li <philip.li@...el.com>, 
	Greg KH <gregkh@...uxfoundation.org>
Cc: rust-for-linux@...r.kernel.org, llvm@...ts.linux.dev, 
	oe-kbuild-all@...ts.linux.dev, Jacob Keller <jacob.e.keller@...el.com>, 
	intel-wired-lan@...ts.osuosl.org, 
	Alexander Lobakin <aleksander.lobakin@...el.com>, linux-hardening@...r.kernel.org, 
	Kees Cook <keescook@...omium.org>, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v3 1/7] overflow: add DEFINE_FLEX() for on-stack allocs

On Fri, Aug 18, 2023 at 12:38 PM Przemek Kitszel
<przemyslaw.kitszel@...el.com> wrote:
>
> Rust folks, could you please tell me if this is something I should fix,
> or I just uncovered some existing bug in "unstable" thing?
>
> Perhaps it is worth to mention, diff of v3 vs v2 is:
> move dummy implementation of __has_builtin() macro to the top of
> compiler_types.h, just before `#ifndef ASSEMBLY`

Nothing you need to worry about, it is an issue with old `bindgen` and
LLVM >= 16, fixed in commit 08ab786556ff ("rust: bindgen: upgrade to
0.65.1") which is in `rust-next` at the moment. Sorry about that, and
thanks for pinging us!

LKP / Yujie / Philip: since we got a few reports on this, would it be
possible to avoid LLVM >= 16 for Rust-enabled builds for any branch
that does not include the new `bindgen` or at least 08ab786556ff? Or,
if Greg is OK with that, I guess we could also backport the upgrade,
but perhaps it is a bit too much for stable?

Cheers,
Miguel