From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 12DB61A9F83; Wed, 28 Jan 2026 01:04:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769562243; cv=none; b=IGiI0za6hAhhisdw63tBDLMW6JGnJnRGnvw9vuME0jF5n3H1hIwaZjxNizFjCIENYbcadsLTOKKFngp3fCPuzWJMZe2OcyEWGPSxQBQD9sgyz3UcVG64fvsJJYWyuJwiUQmuaI8FW4qYdCqr1eEwQ9bIKdcYtaS6Iwjpgfy+L9A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769562243; c=relaxed/simple; bh=mdDcknH5BtgmjDkUBQIyPJuMNm0p9krUQ1ntzkx6jpM=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=GLQl0g+qgrrrSzkzntY8TacNuYskx0V85QGblSBfyStiuJjlqA+PMRxoQgXWfIetsS4uX3j6hPHUQi8tXu4YQpLHbB/+ZSKOA8XB9yp+3oHXRuPjHWPL2pLtd/BZkYlNvKv9Lav4oq5FkXhoNayssSEIeGMZUnKAwmflebt3CAU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=2PmDnPhW; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="2PmDnPhW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A1839C116C6; Wed, 28 Jan 2026 01:04:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1769562242; bh=mdDcknH5BtgmjDkUBQIyPJuMNm0p9krUQ1ntzkx6jpM=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=2PmDnPhW5nIUXESwN/n58zbMjcZiLsvT71e98eQxn680UGs57nsTLxrqE53kOydm7 AQmYyHgh0PuKRCOHp3gr3f+JBtBMh+Dc/OhcXHaFx5141nlJqyhoGlJ+81ACdLk35L Z7Edi48mjDIFmwdT2E94I2wOzi4UjVGj6/pBtyBs= Date: Tue, 27 Jan 2026 17:04:01 -0800 From: Andrew Morton To: Alexei Starovoitov Cc: Marco Elver , Alan Maguire , Kees Cook , Nathan Chancellor , Peter Zijlstra , Miguel Ojeda , Uros Bizjak , "Jason A. Donenfeld" , Marc.Herbert@linux.intel.com, Heiko Carstens , "H. Peter Anvin" , namjain@linux.microsoft.com, "Paul E. McKenney" , LKML , Andrii Nakryiko , Yonghong Song , Alexei Starovoitov , Jiri Olsa , Daniel Borkmann , Martin KaFai Lau , Eduard , Song Liu , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , bvanassche , nilay@linux.ibm.com, bpf Subject: Re: [PATCH] kcsan, compiler_types: avoid duplicate type issues in BPF Type Format Message-Id: <20260127170401.43b972fa4f7b0b4419c7023c@linux-foundation.org> In-Reply-To: References: <20260116091730.324322-1-alan.maguire@oracle.com> <20260127153129.2ca728a4550375a4172e1351@linux-foundation.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Tue, 27 Jan 2026 16:02:32 -0800 Alexei Starovoitov wrote: > > compiler_types.h appears to be a free-for-all. It's best to view such > > a thing as a KCSAN patch rather than a compiler_types.h patch - that > > the patch affects compiler_types.h is incidental. > > > > 31f605a308e6 came in via paulmck so convention (which perhaps only I > > maintain) says "Paul", but whatever - getting the fix merged is the > > important part. > > > > So I'll grab Alan's patch, shall drop if it pops up in -next via a > > different route. Aiming for upstreaming in the next merge window. > > You mean in the upcoming merge window, right? Yes. It could be added to 6.19-rcX/-stable if there's a need? > The severity of the bug is significant. Better to land it sooner > rather than later. OK, that wasn't clear to me from the changelog. > > It's unclear whether a -stable backport is required. Thoughts on this > > are sought. > > Yes, since without it kcsan and bpf are mutually exclusive. OK, cc:stable added.