From owner-freebsd-net@freebsd.org Wed Jun 7 14:21:05 2017 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 6BC99C6EBD0 for ; Wed, 7 Jun 2017 14:21:05 +0000 (UTC) (envelope-from freebsd@omnilan.de) Received: from mx0.gentlemail.de (mx0.gentlemail.de [IPv6:2a00:e10:2800::a130]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 0A2AA75A71 for ; Wed, 7 Jun 2017 14:21:04 +0000 (UTC) (envelope-from freebsd@omnilan.de) Received: from mh0.gentlemail.de (mh0.gentlemail.de [IPv6:2a00:e10:2800::a135]) by mx0.gentlemail.de (8.14.5/8.14.5) with ESMTP id v57EL24H080952 for ; Wed, 7 Jun 2017 16:21:02 +0200 (CEST) (envelope-from freebsd@omnilan.de) Received: from titan.inop.mo1.omnilan.net (s1.omnilan.de [217.91.127.234]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mh0.gentlemail.de (Postfix) with ESMTPSA id 3D656B1C; Wed, 7 Jun 2017 16:21:02 +0200 (CEST) Message-ID: <59380BC1.7090300@omnilan.de> Date: Wed, 07 Jun 2017 16:20:49 +0200 From: Harry Schmalzbauer Organization: OmniLAN User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; de-DE; rv:1.9.2.8) Gecko/20100906 Lightning/1.0b2 Thunderbird/3.1.2 MIME-Version: 1.0 To: FreeBSD Net Subject: panic after LOR, 2nd netmap_mem2.c, 1st vm_fault.c Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (mx0.gentlemail.de [IPv6:2a00:e10:2800::a130]); Wed, 07 Jun 2017 16:21:02 +0200 (CEST) X-Milter: Spamilter (Reciever: mx0.gentlemail.de; Sender-ip: ; Sender-helo: mh0.gentlemail.de; ) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Jun 2017 14:21:05 -0000 lock order reversal: (sleepable after non-sleepable) 1st 0xfffff8007519a960 vm object (vm object) @ /usr/local/share/deploy-tools/RELENG_11/src/sys/vm/vm_fault.c:572 2nd 0xfffff8003299b000 (d)->nm_mtx ((d)->nm_mtx) @ /usr/local/share/deploy-tools/RELENG_11/src/sys/dev/netmap/netmap_mem2.c:577 stack backtrace: #0 0xffffffff805e7900 at witness_debugger+0x70 #1 0xffffffff805e77f3 at witness_checkorder+0xe23 #2 0xffffffff80591f4e at _sx_xlock+0x5e #3 0xffffffff8042275a at netmap_mem2_ofstophys+0x2a #4 0xffffffff8041f3ab at netmap_dev_pager_fault+0x3b #5 0xffffffff8082d834 at dev_pager_getpages+0x74 #6 0xffffffff80856d2a at vm_pager_get_pages+0x4a #7 0xffffffff8083aa92 at vm_fault_hold+0xa52 #8 0xffffffff80839ff5 at vm_fault+0x75 #9 0xffffffff8088048f at trap_pfault+0xff #10 0xffffffff8087fc38 at trap+0x348 #11 0xffffffff808645d1 at calltrap+0x8 KDB: stack backtrace: #0 0xffffffff805ca4b7 at kdb_backtrace+0x67 #1 0xffffffff8058a3f6 at vpanic+0x186 #2 0xffffffff8058a473 at panic+0x43 #3 0xffffffff8056b564 at __mtx_assert+0xb4 #4 0xffffffff80544780 at knlist_add+0x20 #5 0xffffffff8041ead0 at netmap_kqfilter+0x110 #6 0xffffffff804657f7 at devfs_kqfilter_f+0x77 #7 0xffffffff80542a0b at kqueue_register+0x78b #8 0xffffffff80543432 at kqueue_kevent+0x92 #9 0xffffffff80543336 at kern_kevent_fp+0x96 #10 0xffffffff8054324f at kern_kevent+0x9f #11 0xffffffff80543058 at sys_kevent+0x138 #12 0xffffffff80880dda at amd64_syscall+0x57a #13 0xffffffff808648bb at Xfast_syscall+0xfb #0 doadump (textdump=) at pcpu.h:222 #1 0xffffffff80589e70 in kern_reboot (howto=260) at /usr/local/share/deploy-tools/RELENG_11/src/sys/kern/kern_shutdown.c:366 #2 0xffffffff8058a430 in vpanic (fmt=, ap=) at /usr/local/share/deploy-tools/RELENG_11/src/sys/kern/kern_shutdown.c:759 #3 0xffffffff8058a473 in panic (fmt=) at /usr/local/share/deploy-tools/RELENG_11/src/sys/kern/kern_shutdown.c:690 #4 0xffffffff8056b564 in __mtx_assert (c=0x0, what=0, file=0x0, line=0) at /usr/local/share/deploy-tools/RELENG_11/src/sys/kern/kern_mutex.c:1000 #5 0xffffffff80544780 in knlist_add (knl=0xfffffe000a055450, kn=0xfffff8026d097e80, islocked=1) at /usr/local/share/deploy-tools/RELENG_11/src/sys/kern/kern_event.c:2089 #6 0xffffffff8041ead0 in netmap_kqfilter (dev=, kn=0xfffff8026d097e80) at /usr/local/share/deploy-tools/RELENG_11/src/sys/dev/netmap/netmap_freebsd.c:1354 #7 0xffffffff804657f7 in devfs_kqfilter_f (fp=0xfffff8001faf8780, kn=0xfffff8026d097e80) at /usr/local/share/deploy-tools/RELENG_11/src/sys/fs/devfs/devfs_vnops.c:837 #8 0xffffffff80542a0b in kqueue_register (kq=0xfffff8001a65c000, kev=0xfffffe045b4dc650, td=0xfffff8014ca71000, waitok=) at /usr/local/share/deploy-tools/RELENG_11/src/sys/kern/kern_event.c:1334 #9 0xffffffff80543432 in kqueue_kevent (kq=0xfffff8001a65c000, td=0xfffff8014ca71000, nchanges=4, nevents=, k_ops=0xfffffe045b4dc8a0, timeout=) at /usr/local/share/deploy-tools/RELENG_11/src/sys/kern/kern_event.c:1019 #10 0xffffffff80543336 in kern_kevent_fp (td=0xfffff8014ca71000, fp=, nchanges=4, nevents=, k_ops=, timeout=) at /usr/local/share/deploy-tools/RELENG_11/src/sys/kern/kern_event.c:1050 #11 0xffffffff8054324f in kern_kevent (td=0xfffff8014ca71000, fd=7, nchanges=4, nevents=0, k_ops=0xfffffe045b4dc8a0, timeout=0x0) at /usr/local/share/deploy-tools/RELENG_11/src/sys/kern/kern_event.c:993 #12 0xffffffff80543058 in sys_kevent (td=0xfffff8014ca71000, uap=0xfffffe045b4dca30) at /usr/local/share/deploy-tools/RELENG_11/src/sys/kern/kern_event.c:925 #13 0xffffffff80880dda in amd64_syscall (td=0xfffff8014ca71000, traced=0) at subr_syscall.c:135 #14 0xffffffff808648bb in Xfast_syscall () at /usr/local/share/deploy-tools/RELENG_11/src/sys/amd64/amd64/exception.S:396 #15 0x000000080122813a in ?? () Sorry, again me, again helpless without you. This is on r319032, stable/11 with netmap merged from HEAD. Since I was advised to replace netmap with github sources, I thought it may be beneficial to get the various HEAD-fixes as well. Seems it's beyond my scope doing such things. Does anybody have a quick idea if it's easily fixable, or a complicated issue, possibly caused due to MFC boch? Thanks, -harry