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 3C4581D516F; Sun, 4 May 2025 09:53:29 +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=1746352410; cv=none; b=Pzii+TAMjhojhJ9I1ijW2llx76M/iXMZt3qgiBoMNcDe0scw28+qliROD33gIBMngNIdbpJQjUK/Osm43g9UQeQQoL8HRn3P7dsXBN1vC/n24sk+noyqaN8ecwTbwIfyI8vmqE/LCQz7hoMe5rjfhuhRNOvdNkSXzMp+XpqZ3V4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746352410; c=relaxed/simple; bh=eiuoW4WfYbB/NLMVhSl0ytucyk+1Q9O7CyBNqlpFpZo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=pAJptmaePrsDvxgyZUl4HyuImyQhyZoPmG2ZMYnvzy+WPO+5ueAz5G1fleTrpjlL8FLYnsLVdj8RGOjZrbUySrN470y2C+Xh3ls6MRtZ9hM0y/SRA9/Qwy40qHeA8gYTkIOTjlAhtA6WiL47iMkihO1kWjWHL8sYnM7mZ1gMESk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=c8oYcVlI; 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="c8oYcVlI" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E5EACC4CEF2; Sun, 4 May 2025 09:53:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746352409; bh=eiuoW4WfYbB/NLMVhSl0ytucyk+1Q9O7CyBNqlpFpZo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=c8oYcVlI+leIUNnMqswnXdkX2I0SXzGzWTqVI6ro7suaX1MMgQQMEx0r5KRdsx4TC 3SrWEweUKdCkD8dAhOGGkWAKLUhoH9f0XYv4+HsOluPeYzDZHsGas/xOiOKxO4dyCM kwN7VXhAHSILcvZWFrI94qzGPdl8czdZqItc2RC5Vpp9EJgpvftMT2X8IebSVDJSRs efNYrNgDJYj2bSX8FWlw9700fo5yDOMx3e/QE/9/EVHjn3Es5oQPvrKck/75PNNVjs BF8/l1BGuQMxJQSbmB01PeRWeyh//D/YRjs5l5GEShhaZBh88KX0/snn8WruQ55TZr HdmwoLnmR83Hg== Date: Sun, 4 May 2025 11:53:24 +0200 From: Ingo Molnar To: Borislav Petkov Cc: Kees Cook , "Gustavo A. R. Silva" , linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org, linux-tip-commits@vger.kernel.org, Andy Lutomirski , Brian Gerst , "Chang S. Bae" , "H. Peter Anvin" , Linus Torvalds , x86@kernel.org, Oleg Nesterov Subject: Re: hardened_usercopy 32-bit (was: Re: [tip: x86/merge] x86/fpu: Make task_struct::thread constant size) Message-ID: References: <20250503120712.GJaBYG8A-D77MllFZ3@fat_crate.local> <20250504095041.GAaBc4cRpKHJvo5fRE@fat_crate.local> Precedence: bulk X-Mailing-List: linux-kernel@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: <20250504095041.GAaBc4cRpKHJvo5fRE@fat_crate.local> * Borislav Petkov wrote: > On Sun, May 04, 2025 at 10:44:20AM +0200, Ingo Molnar wrote: > > > Thx for the report, mind sending the exact .config that fails for you? > > > > BTW., mind sending the full bootlog as well? I cannot reproduce it here > > with CONFIG_HARDENED_USERCOPY=y, so I suspect it's something about the > > build, HW or boot environment. > > Attaching boot.log and .config. > > Toolchain is: > > gcc (Debian 13.2.0-25) 13.2.0 Thanks! Ingo