From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp0 ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms11 with LMTPS id uAFNKzaRoV+gHQAA0tVLHw (envelope-from ) for ; Tue, 03 Nov 2020 17:19:50 +0000 Received: from aspmx1.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp0 with LMTPS id oPs8JzaRoV9rXAAA1q6Kng (envelope-from ) for ; Tue, 03 Nov 2020 17:19:50 +0000 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id 763FA9402B5 for ; Tue, 3 Nov 2020 17:19:50 +0000 (UTC) Received: from localhost ([::1]:44308 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kZzyH-0005iX-85 for larch@yhetil.org; Tue, 03 Nov 2020 12:19:49 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:56576) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kZzy0-0005hw-KF for guix-devel@gnu.org; Tue, 03 Nov 2020 12:19:34 -0500 Received: from tobias.gr ([2a02:c205:2020:6054::1]:60814) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kZzxy-0005UD-E0; Tue, 03 Nov 2020 12:19:31 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tobias.gr; s=2018; bh=nz5P85qfZFYADh/RcsIrOm/sd4YSR3D9iYwrjmD0TgY=; h=date:in-reply-to: references:subject:cc:from; b=ZdVDCcHuOuyKTb9mCvSK9b2tOWcX7XlqLiHB0wd6 dM+l+h6ZPMfD1ih0nj9yRgJQ/p8SUeqHZxrFMZG8pX5Dhn5qP8fgWDtHHDvYBd0hfqb/4L j7MqjuIZoGPYLhSc4yrxeHRctnuDzLViyVHztP7cGifRxeFoY5OyoteFJ4Ss+xUvqUOo8I 8hXr1wWyJ8XgIeOp9o8UI7UhrL6vKFmD5m4zUanTbwU8jQnW98AfLwIq555MDzHX8YtoLo BiNvdtkeFBNNbhNHl1gQZFdiCKivQ5dV3yjaXuErRoR55aaP8JXMVYt6IBUVC2VXA02YHb jegdDNzAqOj1p0lpCAdkzg== Received: by submission.tobias.gr (OpenSMTPD) with ESMTPSA id 9d565176 (TLSv1.2:ECDHE-ECDSA-AES256-GCM-SHA384:256:NO); Tue, 3 Nov 2020 17:19:26 +0000 (UTC) BIMI-Selector: v=BIMI1; s=default; From: Tobias Geerinckx-Rice Cc: Ludovic =?utf-8?Q?Court=C3=A8s?= , John Soo , guix-devel@gnu.org Subject: Re: RFC: subcommand to pause/resume builds References: <87r1pbzixl.fsf@asu.edu> <87zh3yczss.fsf@gnu.org> <87ft5q4d0i.fsf@nckx> In-reply-to: <87ft5q4d0i.fsf@nckx> Date: Tue, 03 Nov 2020 18:19:36 +0100 Message-ID: <87blge4atz.fsf@nckx> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Received-SPF: pass client-ip=2a02:c205:2020:6054::1; envelope-from=me@tobias.gr; helo=tobias.gr X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MISSING_HEADERS=1.021, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Scanner: ns3122888.ip-94-23-21.eu Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=tobias.gr header.s=2018 header.b=ZdVDCcHu; dmarc=pass (policy=reject) header.from=tobias.gr; spf=pass (aspmx1.migadu.com: domain of guix-devel-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-devel-bounces@gnu.org X-Spam-Score: -1.31 X-TUID: W+6i7lalh/si --=-=-= Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable After playing around with the daemon I agree that it plays a=20 little too loose with processes to make this upstream material ATM=20 (groups? shepherd? *shrug*). To close: Tobias Geerinckx-Rice =E5=86=99=E9=81=93=EF=BC=9A > However, this is FUD: > >> Last, you=E2=80=99d need to send SIGTSTP to the whole process group of=20 >> the >> build, like so (I think, haven=E2=80=99t tried): Re-reading this I wonder if you misread SIGSTOP as SIGTSTP? The=20 two are not related. SIGSTOP cannot be handled or blocked. It's possible to *detect*, like one can detect almost anything=20 because, but you'd be going out of your way to do so. I still=20 think the concern is oddly specific & theoretical. Build processes *could* be using rowhammer to deliberately crash=20 if you're browsing Reddit, too, and who could blame them. Kind regards, T G-R --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iIMEARYKACsWIQT12iAyS4c9C3o4dnINsP+IT1VteQUCX6GRKA0cbWVAdG9iaWFz LmdyAAoJEA2w/4hPVW15JKcBAMNRQoOmQ/vYnhZlF4JTgnsIWE2ASnGVV6h1guWK Ab0AAQC6tvkz/ROym8yWJSlpxE/38Zpa6naQ2rK1MKwKZqFcDQ== =71uH -----END PGP SIGNATURE----- --=-=-=--