From owner-freebsd-questions@freebsd.org Mon Sep 23 16:40:25 2019 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 BDC29F9A9A for ; Mon, 23 Sep 2019 16:40:25 +0000 (UTC) (envelope-from chris@cretaforce.gr) Received: from relay4.cretaforce.gr (relay4.cretaforce.gr [195.201.253.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.cretaforce.gr", Issuer "RapidSSL RSA CA 2018" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46cVRr4T5Sz4DfH for ; Mon, 23 Sep 2019 16:40:24 +0000 (UTC) (envelope-from chris@cretaforce.gr) Received: from server1.cretaforce.gr (server1.cretaforce.gr [138.201.248.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.cretaforce.gr", Issuer "RapidSSL RSA CA 2018" (verified OK)) by smtp2.cretaforce.gr (Postfix) with ESMTPS id B6C2F1F443 for ; Mon, 23 Sep 2019 19:40:21 +0300 (EEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cretaforce.gr; s=cretaforce; t=1569256821; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=tZ2Y8vvoUaQQm6zrQSoIqFdDNFk3t7KqoejhPxE6Xpg=; b=WctoBCmmG37Y4QWc0db4q5A7kYhUHfbWJj/5VIY/QUsV/Ys76xa31jj/fVKeYvpDg5VUPt APeY4fwwGvqyyDz1EB1HHP7JfklGmo5/zvyks+cF+pmO4xJZOUBZwaKl7do4AOBaV26OKh HULFKt7Ms8afSNVu/8zTIyomBY/N0tk= Received: from [192.168.2.2] (unknown [83.235.111.98]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) (Authenticated sender: chris@cretaforce.gr) by server1.cretaforce.gr (Postfix) with ESMTPSA id 7362B27344; Mon, 23 Sep 2019 19:40:21 +0300 (EEST) From: Christos Chatzaras Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\)) Subject: help with crash dump Message-Id: Date: Mon, 23 Sep 2019 19:40:20 +0300 Cc: freebsd-stable To: FreeBSD Mailing List X-Mailer: Apple Mail (2.3445.104.11) X-Rspamd-Queue-Id: 46cVRr4T5Sz4DfH X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=cretaforce.gr header.s=cretaforce header.b=WctoBCmm; dmarc=none; spf=pass (mx1.freebsd.org: domain of chris@cretaforce.gr designates 195.201.253.147 as permitted sender) smtp.mailfrom=chris@cretaforce.gr X-Spamd-Result: default: False [-4.12 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_DKIM_ALLOW(-0.20)[cretaforce.gr:s=cretaforce]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+ip4:195.201.253.147]; MV_CASE(0.50)[]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; DMARC_NA(0.00)[cretaforce.gr]; DWL_DNSWL_LOW(-1.00)[cretaforce.gr.dwl.dnswl.org : 127.0.5.1]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[cretaforce.gr:+]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; IP_SCORE(-1.03)[ipnet: 195.201.0.0/16(-3.34), asn: 24940(-1.77), country: DE(-0.01)]; RCVD_IN_DNSWL_LOW(-0.10)[147.253.201.195.list.dnswl.org : 127.0.5.1]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:195.201.0.0/16, country:DE]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Sep 2019 16:40:25 -0000 Randomly every few weeks / months one of the servers I manage gets a = panic. It doesn't happen on the same server every time. I run FreeBSD stable compiled on 2 September 2019 but it did happen with = previous versions too and if I remember correctly it did happen with = FreeBSD 11 too. I don't have /usr/lib/debug/kernel files (I delete them to save some = space) but I can recompile a new kernel / userland if it's needed. Any idea what the issue is? kgdb /boot/kernel/kernel ./vmcore.0 GNU gdb (GDB) 8.3 [GDB v8.3 for FreeBSD] Copyright (C) 2019 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later = This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-portbld-freebsd12.0". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /boot/kernel/kernel... (No debugging symbols found in /boot/kernel/kernel) 0xffffffff80bff56a in sched_switch () (kgdb) bt #0 0xffffffff80bff56a in sched_switch () #1 0xffffffff80bd9be2 in mi_switch () #2 0xffffffff80c29175 in sleepq_catch_signals () #3 0xffffffff80c28caf in sleepq_wait_sig () #4 0xffffffff80bd960a in _sleep () #5 0xffffffff80c64e02 in solisten_dequeue () #6 0xffffffff80c6c763 in kern_accept4 () #7 0xffffffff80c6ca40 in accept1 () #8 0xffffffff810a48b4 in amd64_syscall () #9 #10 0x0000000800ad68ca in ?? () Backtrace stopped: Cannot access memory at address 0x7ffffffee648=