From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56]) (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 32B4F5336A; Fri, 15 Mar 2024 19:46:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.97.179.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710531975; cv=none; b=GNa6Iu47ncYl3Ypk9sCmXG7XezNaYSBrpXp2KhARVOo+6uAa79jkCzSGjFhjW2FRUnGf7GYv/BTpPZCJ3DcPMZ4G/op1dY9Q0NhvJ2BnX8AZNyisAdgLfa7fTQi07EXQkx8/nsGQC3Ghe9Wq5PKeHB7TO2LGUDioqR5YzIZTR8w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710531975; c=relaxed/simple; bh=CyO55Dw7XsuAhmq2UFNdyZkwG7l+VK8tbtJ7oWv5oJg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=qrpbP9kR69g3jY4rkLKbSxecBxfP/u8kQv9OfRIRwtjqTcQuc2xX1oXPqWTEsKKWEiEmbBS0D3xpCQ62WUTQI3Crn32/SzmHO2f/5gyY3CIHY2kx/P7hL//g+htv17YYw0lvRLUk6P5+T2aUe72yqqaXazWXJHAmJdZkcSQFXD0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=igalia.com; spf=pass smtp.mailfrom=igalia.com; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b=KoVCMDkw; arc=none smtp.client-ip=213.97.179.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=igalia.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=igalia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b="KoVCMDkw" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:From: References:Cc:To:Subject:MIME-Version:Date:Message-ID:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=CyO55Dw7XsuAhmq2UFNdyZkwG7l+VK8tbtJ7oWv5oJg=; b=KoVCMDkwcTzZ2TVlK0TuGbIFLH 0ZGDBIl7uNfV912TShCkOCakhWsRklU8BVXnTLYe1VboyhtfiG9M4Xo8ozL35t2cRTX2NSzj/87cN 6JeUDd0DKUwyTAuU9nfaeLjRPq2EdDOTSegazssCX3PNd+nUYZd4R3wfDoZG30Jp/spkuVgvFyrZ7 k0nSVX9FYrJ0r14eTtd+WAxlbsxJvLsdzr7avXu7dPPPNBUrVlOeBSfbauG/qxuNC0pxg55Fhq+Fa pFxDJV8GJ6wyauQW75TgBLXY0u0NNdNDpzjh4TUcfLGKZecS0lhXKPXQ5Dh6M2gO/VbC05CUs/Dab hdsyZyXw==; Received: from [186.209.63.98] (helo=[172.17.1.0]) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_128_GCM:128) (Exim) id 1rlDVB-00Aw9K-T5; Fri, 15 Mar 2024 20:46:02 +0100 Message-ID: <2a500ade-a91d-15f2-e5ae-7f261e6a84b4@igalia.com> Date: Fri, 15 Mar 2024 16:45:56 -0300 Precedence: bulk X-Mailing-List: linux-hardening@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.15.1 Subject: Re: [PATCH 1/3] efi: pstore: Request at most 512 bytes for variable names Content-Language: en-US To: Ard Biesheuvel Cc: linux-efi@vger.kernel.org, Tim Schumacher , Kees Cook , Tony Luck , linux-hardening@vger.kernel.org References: <20240315002616.422802-1-timschumi@gmx.de> From: "Guilherme G. Piccoli" In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 15/03/2024 06:16, Ard Biesheuvel wrote: > [...] > As an aside, you really want to avoid EFI pstore in general, and > specifically on such old systems with quirky UEFI implementations. > Hi Ard, this comment made me very curious; apart from old quirky UEFI implementations, what's the reason you see to avoid using efi-pstore in general ? Thanks in advance for your insights! Cheers, Guilherme