From owner-freebsd-current@FreeBSD.ORG Wed Jan 21 13:40:24 2015 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 387EAB22 for ; Wed, 21 Jan 2015 13:40:24 +0000 (UTC) Received: from smtp.digiware.nl (unknown [IPv6:2001:4cb8:90:ffff::3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id ECE4B15A for ; Wed, 21 Jan 2015 13:40:23 +0000 (UTC) Received: from rack1.digiware.nl (unknown [127.0.0.1]) by smtp.digiware.nl (Postfix) with ESMTP id E6E8416A405; Wed, 21 Jan 2015 14:40:19 +0100 (CET) X-Virus-Scanned: amavisd-new at digiware.nl Received: from smtp.digiware.nl ([127.0.0.1]) by rack1.digiware.nl (rack1.digiware.nl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id TmzwahGFI3IH; Wed, 21 Jan 2015 14:40:18 +0100 (CET) Received: from [IPv6:2001:4cb8:3:1:6455:2a07:d7dc:ef6e] (unknown [IPv6:2001:4cb8:3:1:6455:2a07:d7dc:ef6e]) by smtp.digiware.nl (Postfix) with ESMTP id 8F52E16A403; Wed, 21 Jan 2015 14:40:18 +0100 (CET) Message-ID: <54BFAC3E.8060708@digiware.nl> Date: Wed, 21 Jan 2015 14:40:14 +0100 From: Willem Jan Withagen Organization: Digiware Management b.v. User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 MIME-Version: 1.0 To: FreeBSD Current , bzeeb+freebsd+lor@zabbadoz.net Subject: LOR with bufwait (bufwait) @ /usr/src/sys/ufs/ffs/ffs_vnops.c:263 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Jan 2015 13:40:24 -0000 Hoi, Looked at: http://sources.zabbadoz.net/freebsd/lor.html#howtoreportalor But did not find any reference to ffs_vnops, so it might be a new one? I got this from running 'make installworld' of todays HEAD IN a bhyveVM which was already running thismornings kernel. So it was not the Dom0 server, but the actual version running in the VM FreeBSD-11 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r277423: Wed Jan 21 09:38:40 UTC 2015 wjw@FreeBSD-11:/usr/obj/usr/src/sys/GENERIC amd64 --WjW lock order reversal: 1st 0xfffff80009aa2240 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2164 2nd 0xfffffe01ea244770 bufwait (bufwait) @ /usr/src/sys/ufs/ffs/ffs_vnops.c:263 3rd 0xfffff801685dc418 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2164 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe02332ecd60 witness_checkorder() at witness_checkorder+0xe50/frame 0xfffffe02332ecdf0 __lockmgr_args() at __lockmgr_args+0xacf/frame 0xfffffe02332ecf20 ffs_lock() at ffs_lock+0x84/frame 0xfffffe02332ecf70 VOP_LOCK1_APV() at VOP_LOCK1_APV+0xfc/frame 0xfffffe02332ecfa0 _vn_lock() at _vn_lock+0x8a/frame 0xfffffe02332ed010 vget() at vget+0x67/frame 0xfffffe02332ed050 vfs_hash_get() at vfs_hash_get+0xdc/frame 0xfffffe02332ed0a0 ffs_vgetf() at ffs_vgetf+0x40/frame 0xfffffe02332ed130 softdep_sync_buf() at softdep_sync_buf+0xa90/frame 0xfffffe02332ed210 ffs_syncvnode() at ffs_syncvnode+0x259/frame 0xfffffe02332ed290 ffs_truncate() at ffs_truncate+0x671/frame 0xfffffe02332ed470 ufs_direnter() at ufs_direnter+0x7d2/frame 0xfffffe02332ed530 ufs_makeinode() at ufs_makeinode+0x5bf/frame 0xfffffe02332ed6f0 ufs_symlink() at ufs_symlink+0x32/frame 0xfffffe02332ed740 VOP_SYMLINK_APV() at VOP_SYMLINK_APV+0xf7/frame 0xfffffe02332ed770 kern_symlinkat() at kern_symlinkat+0x245/frame 0xfffffe02332ed9a0 amd64_syscall() at amd64_syscall+0x25a/frame 0xfffffe02332edab0 Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe02332edab0 --- syscall (57, FreeBSD ELF64, sys_symlink), rip = 0x4101ba, rsp = 0x7ffffffec3d8, rbp = 0x7ffffffec800 ---