From owner-freebsd-questions@freebsd.org Thu Jun 17 19:57:21 2021 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 261CC65D60F for ; Thu, 17 Jun 2021 19:57:21 +0000 (UTC) (envelope-from rfg@tristatelogic.com) Received: from outgoing.tristatelogic.com (segfault.tristatelogic.com [69.62.255.118]) by mx1.freebsd.org (Postfix) with ESMTP id 4G5Xrw3lf7z3nR9 for ; Thu, 17 Jun 2021 19:57:20 +0000 (UTC) (envelope-from rfg@tristatelogic.com) Received: by segfault.tristatelogic.com (Postfix, from userid 1237) id A3FE84E680; Thu, 17 Jun 2021 12:57:19 -0700 (PDT) From: "Ronald F. Guilmette" To: freebsd-questions@freebsd.org Subject: Re: Safety harnesses (was: Is a successful call to write(2) atomic?) In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <36521.1623959839.1@segfault.tristatelogic.com> Date: Thu, 17 Jun 2021 12:57:19 -0700 Message-ID: <36522.1623959839@segfault.tristatelogic.com> X-Rspamd-Queue-Id: 4G5Xrw3lf7z3nR9 X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of rfg@tristatelogic.com designates 69.62.255.118 as permitted sender) smtp.mailfrom=rfg@tristatelogic.com X-Spamd-Result: default: False [0.47 / 15.00]; ARC_NA(0.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[69.62.255.118:from]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[]; DMARC_NA(0.00)[tristatelogic.com]; NEURAL_SPAM_MEDIUM(0.81)[0.808]; RCPT_COUNT_ONE(0.00)[1]; SPAMHAUS_ZRD(0.00)[69.62.255.118:from:127.0.2.255]; NEURAL_SPAM_SHORT(0.96)[0.965]; NEURAL_HAM_LONG(-1.00)[-1.000]; RCVD_COUNT_ZERO(0.00)[0]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:14051, ipnet:69.62.128.0/17, country:US]; MAILMAN_DEST(0.00)[freebsd-questions]; SUBJECT_HAS_QUESTION(0.00)[] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Jun 2021 19:57:21 -0000 In message , Graham Perrin wrote: >The surprise, to me, was losing fifty-something seconds' worth of data >in a kernel panic situation... In an ideal universe, the kernel never panics. Mine however still does from time to time. I have been informed that this is attributable to me continuing to use an otherwise perfectly servicable AMD graphics card that the X maintainer has elected to no longer support. I have suggested that there might possibly be some more graceful failure mode than a kernel panic in response to some unhandled condition, but to no avail. (Hardware upgrade has been pednding on my end for more than a year. I have all of the necessary parts... new motherboard, new CPU/APU and new memory... however I just never seem to find the time.) Regards, rfg