From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 7ECA9306754; Tue, 28 Jul 2026 15:22:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785252164; cv=none; b=cwr9AjEJws/prwrxi7btH8B2NnkqGrQqIdWXii16zgJUwGEijomz4cxryqdFEPJ8Q3HL+2k+SW43pgK2D2CTaSULVkOb7URsmGTsf9VR5ceU+ZjQ7IjFOY8yAJVl9jOqeNQqn+STagNdC4oeLYr4oTWAmmMq1aNp7o0moY2IOOc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785252164; c=relaxed/simple; bh=AIcL2a6ir0ncVu9m2CvMw7boRAZ9HBY4FtgW1it0Hk4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=rXqQ5OCNXiuF6mZJ0qsFX+DdT7bH2oFdl3R/L8K+bm+raTLO+725hCVuogYGJdbB+5SJV3+PiRS8F3ZN97ZyvD6dMcd62Jgz7d+C6Eff2NAw5m1nVelfOZ+KxxIkngBvqdS2tthQDhhI1erZPkBbO7cb6wRfVTV5o+G0XfD2xYM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dWB0j1zS; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="dWB0j1zS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A752B1F000E9; Tue, 28 Jul 2026 15:22:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785252163; bh=yKw7caf9g11sYWC9aIB1I05YdyImrElt0NfZF3BzFj8=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=dWB0j1zSVg8/OAqbDrwzmbMbz6lsH8A9/amYwRkbuphjXxwQqtaMF4YjUMbb96OBX HrINd4z3xSGqzQL49Am1SiSjc/aSOWtGY6AJUcDB5EwYsRs6yDMctV3jcwVHM1z/sT rnqS2HuTC5aOnNbR4735yPignpu+eottmQuRLweUO9xuptjqsePGTWXUsjs0PNAXnY a4XQHgqU53/MzKyJI5yvkUI5ipa+mWSq8lgeoE23r+yWx+ux+BA70KsuTMr4ZqcWSs oAyYEvhgnmk33llNIcSl2mOtRHfXEPS5ftdNT+sXiJqk6rxL839bmzzxaIybPoOu4x +wrjQ+udy27qw== Date: Tue, 28 Jul 2026 08:22:41 -0700 From: Eric Biggers To: Greg Kroah-Hartman Cc: Bartosz Golaszewski , linux-crypto@vger.kernel.org, Herbert Xu , linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Demi Marie Obenour , Kuldeep Singh , Dmitry Baryshkov Subject: Re: [PATCH] crypto: qce - Remove driver Message-ID: <20260728152241.GA4281@quark> References: <2026072410-drained-acts-3502@gregkh> <2026072412-decrease-sandbag-70a1@gregkh> <20260724141414.GB1876@sol> <2026072455-subtly-prayer-0a8a@gregkh> <20260724150932.GA6763@sol> <2026072428-ungodly-outsource-b20c@gregkh> <20260724155144.GA2032@sol> Precedence: bulk X-Mailing-List: linux-crypto@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: <20260724155144.GA2032@sol> On Fri, Jul 24, 2026 at 08:51:44AM -0700, Eric Biggers wrote: > It is consuming a lot of the community's time to help maintain, > including dealing with LLM-found bugs, with no clear benefit to anyone. > Even considering *just today* we can see someone sent a bug fix: > https://lore.kernel.org/linux-crypto/20260724081537.191992-2-thorsten.blum@linux.dev/ Another example: https://lore.kernel.org/linux-crypto/d5de5a55-eb35-4ad5-8d53-12e188e156cb@oss.qualcomm.com/ > It definitely *was* causing problems before it was disabled via the > crypto priority system (which made it unused in the kernel) and dropped > it from AF_ALG (which removed most of the unprivileged attack surface). > When anyone accidentally used it, it caused at least a huge performance > problem, and sometimes other problems too like filesystem hangs. It was > an issue for years. This actually seems to have been an overly-optimistic characterization! As per https://lore.kernel.org/linux-crypto/d5de5a55-eb35-4ad5-8d53-12e188e156cb@oss.qualcomm.com/ this driver drains the battery on every system with the module loaded, even when no crypto requests are actually sent to it. - Eric