From owner-svn-src-all@freebsd.org Tue Aug 27 04:17:44 2019 Return-Path: Delivered-To: svn-src-all@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 EB93DC8DE8; Tue, 27 Aug 2019 04:17:44 +0000 (UTC) (envelope-from cy.schubert@cschubert.com) Received: from smtp-out-so.shaw.ca (smtp-out-so.shaw.ca [64.59.136.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "Client", Issuer "CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 46HbFM59QFz4Lj5; Tue, 27 Aug 2019 04:17:43 +0000 (UTC) (envelope-from cy.schubert@cschubert.com) Received: from spqr.komquats.com ([70.67.125.17]) by shaw.ca with ESMTPA id 2SvKiwUSiSrVc2SvMiobHh; Mon, 26 Aug 2019 22:17:41 -0600 X-Authority-Analysis: v=2.3 cv=L5ZjvNb8 c=1 sm=1 tr=0 a=VFtTW3WuZNDh6VkGe7fA3g==:117 a=VFtTW3WuZNDh6VkGe7fA3g==:17 a=kj9zAlcOel0A:10 a=FmdZ9Uzk2mMA:10 a=pGLkceISAAAA:8 a=YxBL1-UpAAAA:8 a=6I5d2MoRAAAA:8 a=UtRFE5K7Ulp2Whtco6EA:9 a=CjuIK1q_8ugA:10 a=7uh6xexeqkIA:10 a=9Wj_ytqOLHUA:10 a=Ia-lj3WSrqcvXOmTRaiG:22 a=IjZwj45LgO3ly-622nXo:22 a=BVt-rVABO2UG3ysEI_l-:22 Received: from slippy.cwsent.com (slippy [10.1.1.91]) by spqr.komquats.com (Postfix) with ESMTPS id 83254A83; Mon, 26 Aug 2019 21:17:38 -0700 (PDT) Received: from slippy.cwsent.com (localhost [127.0.0.1]) by slippy.cwsent.com (8.15.2/8.15.2) with ESMTP id x7R4Hc65024860; Mon, 26 Aug 2019 21:17:38 -0700 (PDT) (envelope-from Cy.Schubert@cschubert.com) Received: from slippy (cy@localhost) by slippy.cwsent.com (8.15.2/8.15.2/Submit) with ESMTP id x7R4HcfE024857; Mon, 26 Aug 2019 21:17:38 -0700 (PDT) (envelope-from Cy.Schubert@cschubert.com) Message-Id: <201908270417.x7R4HcfE024857@slippy.cwsent.com> X-Authentication-Warning: slippy.cwsent.com: cy owned process doing -bs X-Mailer: exmh version 2.9.0 11/07/2018 with nmh-1.7.1 Reply-to: Cy Schubert From: Cy Schubert X-os: FreeBSD X-Sender: cy@cwsent.com X-URL: http://www.cschubert.com/ To: Mateusz Guzik cc: Cy Schubert , src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r351472 - head/sys/fs/nullfs In-reply-to: References: <201908250513.x7P5DFFx017824@repo.freebsd.org> <6C6BF3A4-DC07-4D9A-9A5F-FA075BF535A8@cschubert.com> <201908261411.x7QEBMWi075354@slippy.cwsent.com> <201908270025.x7R0PtNT008594@slippy.cwsent.com> <201908270341.x7R3fJne062385@slippy.cwsent.com> Comments: In-reply-to Mateusz Guzik message dated "Tue, 27 Aug 2019 05:57:58 +0200." Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 26 Aug 2019 21:17:38 -0700 X-CMAE-Envelope: MS4wfP9HOaC487ijs5Ar1oK8iox2bfVk4E4n/GQqj4+7BcVjX0RqOrqeCdsOEpo/ouy7ZXNcgtTR+sdp4++7HDY54rs3SS38QstetaxCm9eX2QRoXFkMJoeV d9mbZrKSSJftmX02KmEsQDIoKnDqzvzUYAzQ2bfyW0n/Cqp5WjWWr0pLkvniWG2JVYsWNIDK+5qc6Gquo1nLMd2a/NdOgw6aUABRAbcnz58aurgOfjH3K8No 6bHnVS7mMAhdnRUTSHHJfTnR0Lx3JMmnen3pgS5cvW0= X-Rspamd-Queue-Id: 46HbFM59QFz4Lj5 X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; dkim=none; spf=none (mx1.freebsd.org: domain of cy.schubert@cschubert.com has no SPF policy when checking 64.59.136.138) smtp.mailfrom=cy.schubert@cschubert.com X-Spamd-Result: default: False [-4.94 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_COUNT_FIVE(0.00)[5]; HAS_REPLYTO(0.00)[Cy.Schubert@cschubert.com]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; MV_CASE(0.50)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; HAS_XAW(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; RCPT_COUNT_FIVE(0.00)[5]; REPLYTO_EQ_FROM(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_HAM_SHORT(-0.96)[-0.963,0]; RCVD_IN_DNSWL_NONE(0.00)[138.136.59.64.list.dnswl.org : 127.0.5.0]; R_SPF_NA(0.00)[]; FREEMAIL_TO(0.00)[gmail.com]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:6327, ipnet:64.59.128.0/20, country:CA]; RCVD_TLS_LAST(0.00)[]; IP_SCORE(-2.38)[ip: (-6.23), ipnet: 64.59.128.0/20(-3.14), asn: 6327(-2.44), country: CA(-0.09)]; RECEIVED_SPAMHAUS_PBL(0.00)[17.125.67.70.khpj7ygk5idzvmvt5x4ziurxhy.zen.dq.spamhaus.net : 127.0.0.11] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Aug 2019 04:17:45 -0000 In message , Mateusz Guzik writes: > On 8/27/19, Cy Schubert wrote: > > Making progress: > > > > Unread portion of the kernel message buffer: > > > > panic: null_unlock: LK_INTERLOCK passed > > cpuid = 2 > > time = 1566868081 > > KDB: stack backtrace: > > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame > > 0xfffffe0054a954e0 > > vpanic() at vpanic+0x19d/frame 0xfffffe0054a95530 > > panic() at panic+0x43/frame 0xfffffe0054a95590 > > null_unlock() at null_unlock+0x8a/frame 0xfffffe0054a955d0 > > VOP_UNLOCK_APV() at VOP_UNLOCK_APV+0x56/frame 0xfffffe0054a955f0 > > unionfs_unlock() at unionfs_unlock+0x124/frame 0xfffffe0054a95650 > > VOP_UNLOCK_APV() at VOP_UNLOCK_APV+0x56/frame 0xfffffe0054a95670 > > vfs_domount() at vfs_domount+0xc3f/frame 0xfffffe0054a958a0 > > vfs_donmount() at vfs_donmount+0x934/frame 0xfffffe0054a95940 > > sys_nmount() at sys_nmount+0x69/frame 0xfffffe0054a95980 > > amd64_syscall() at amd64_syscall+0x3ae/frame 0xfffffe0054a95ab0 > > fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0054a95ab0 > > --- syscall (378, FreeBSD ELF64, sys_nmount), rip = 0x2bed6a4a, rsp = > > 0x7fffffffe2e8, rbp = 0x7fffffffec70 --- > > Uptime: 1m35s > > > > Ok, this explains everything. I did not think anyone uses unionfs, > let alone stacked on top of nullfs. I'll have a patch later. It's for a few jails. Thanks for persevering. -- Cheers, Cy Schubert FreeBSD UNIX: Web: http://www.FreeBSD.org The need of the many outweighs the greed of the few.