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 9DED9EEAB; Mon, 4 Aug 2025 17:53:44 +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=1754330025; cv=none; b=oWeDceUR2Ic9nummd1Va5tbfZeYysNXzGbwWhzWUJmd+SVbPosXrD+wNKZdDIAgz/lSKziMVJW6XMctR94eLyxAj3Ofm/2hk048Ae1zEEgsAlkvD/IKuBsQWVQSiTJzERDeZbJ2C1ERoxRtsDoHAIuv09yDRsJdXrt39y11VDqM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754330025; c=relaxed/simple; bh=yjujFdtJVfhRPrbL8qX039W0JOqy6MHmd3vLs93bEWw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Kg30DwZGXU3fiyuzthSx/JbElSbr8h9LvGD4YF9IcyurR0HGgI1GZesr0iKrJpmOSbNAhHztiPF9uC6wwdCyf5SjHssijhyWWqYcAIY6NeZ/gkX7+JZDUvd5nP2nunQOm2vEcS3PZSuHT8Vd9H/QGOO3zh2H6OrTL0Tlggyt3JM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=vQZHTNIq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="vQZHTNIq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AF190C4CEE7; Mon, 4 Aug 2025 17:53:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1754330024; bh=yjujFdtJVfhRPrbL8qX039W0JOqy6MHmd3vLs93bEWw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=vQZHTNIqQrFZPM6PL/wYMLbJZnx65b7K+HVzmB9D5VlY9svB5TYoSKr+6GQyo/H0q sCTGGsNmKncsOqQQc3vBIV6gx4aMC5WDSNESHkJf9qrUt+vNqcVijG3yEyxhhG84/K LwgX8KMBojWV8SzvGVmYq7dv6nK7OLxYYXID2424IkU5TvEpttC5MaIwJO/JoIDU/p v6zg6JVPFgo5lcPlOm7+V2Hx8u7GEKhiOuWlw2rlJZDWlrsfnoUKVDFMsT0wNXxbEb +EZsPJqhVgVGedJxsIBU8PQBl6EXQC3kTa6vWqfHe6TKK6c4HZqB06lG2EXNsaZDjz V5D1ynOEa8dLA== Date: Mon, 4 Aug 2025 10:53:38 -0700 From: Nathan Chancellor To: Kees Cook Cc: Naresh Kamboju , clang-built-linux , open list , lkft-triage@lists.linaro.org, Linux Regressions , linux-hardening@vger.kernel.org, "Gustavo A. R. Silva" , Arnd Bergmann , Dan Carpenter , Anders Roxell , Ben Copeland Subject: Re: next-20250804: clang-nightly hardening.config boot failed on arm64 rock-pi-4b Message-ID: <20250804175338.GA2197404@ax162> References: <202508040843.CCEFEF9ED@keescook> Precedence: bulk X-Mailing-List: linux-hardening@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202508040843.CCEFEF9ED@keescook> On Mon, Aug 04, 2025 at 08:44:16AM -0700, Kees Cook wrote: > On Mon, Aug 04, 2025 at 03:41:51PM +0530, Naresh Kamboju wrote: > > Regressions found while booting the Linux next-20250804 on the > > qemu-arm64, dragonboard-410c, rock-pi-4b due to following kernel log. > > > > Regression Analysis: > > - New regression? Yes > > - Reproducibility? yes > > > > First seen on the next-20250804 > > Good: next-20250801 > > Bad: next-20250804 > > Are you able to bisect this by any chance? I think this is the runtime manifestation of https://github.com/ClangBuiltLinux/linux/issues/2116 when built with a version of LLVM without assertions (when assertions are enabled, the build just fails). I can reproduce this with a version of LLVM that contains the broken change and it is resolved with a version of LLVM that contains Fangrui's fixes. I assume this should hit LKFT in the next couple of days via apt.llvm.org. Cheers, Nathan