From owner-freebsd-fs@freebsd.org Sat Jan 9 15:06:33 2016 Return-Path: Delivered-To: freebsd-fs@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 B6295A68019 for ; Sat, 9 Jan 2016 15:06:33 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-io0-x232.google.com (mail-io0-x232.google.com [IPv6:2607:f8b0:4001:c06::232]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 9085510E3 for ; Sat, 9 Jan 2016 15:06:33 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: by mail-io0-x232.google.com with SMTP id 1so265731204ion.1 for ; Sat, 09 Jan 2016 07:06:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:date:message-id:subject:from:to:content-type; bh=C/in4lTrFCaW/MLSUvwVqD3OmCCBbB0U4qrax2H++20=; b=vXwM0/bOEC1j6fW8lu2xDMlv45vS9uu/dKL2AaqQd4mw3bO8CZkbr+2Cftst0072x2 McdowCu1pOFXSFjc6ciHkkQduV1ztlaKvCGps+VzeHHoVBYWK0KZeLpJinfdlut8t0Lp MrKhqurlSAS34oqRqQOJ8AhnuZL4uzzWPSOClJnQZXcv9oXfmDOLb5AmcqAoo5H4SdWj yYl1FpiUkVziMRsTnvvxpBQ8TjRWZkzJpw5ESJWx3MQucK3CWzfUBjpAE15HcYo72Uhs zeGtKOkQ8ZsmlgiU6OJaNSZTwLhV0JYrnHj/KCueW9lhZ+x3Uq4RRdnGZioPHFPeMCVq PWNQ== MIME-Version: 1.0 X-Received: by 10.107.162.146 with SMTP id l140mr49751890ioe.123.1452351992946; Sat, 09 Jan 2016 07:06:32 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.36.121.202 with HTTP; Sat, 9 Jan 2016 07:06:32 -0800 (PST) Date: Sat, 9 Jan 2016 07:06:32 -0800 X-Google-Sender-Auth: WWrMZNz9sYHop2ozYOeZ_iSWr90 Message-ID: Subject: LOR on 10.2-REL-p8 z/ ZFS + NFS? From: Adrian Chadd To: FreeBSD Filesystems Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 09 Jan 2016 15:06:33 -0000 Hiya, Someone asked me about this. It's happening on a 10.2-REL-p8 box serving ZFS via NFS. lock order reversal: 1st 0xfffff801ed92ca28 zfs (zfs) @ /usr/src/sys/fs/nfsserver/nfs_nfsdsocket.c:967 2nd 0xfffff8015f98a068 ufs (ufs) @ /usr/src/sys/kern/vfs_vnops.c:534 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0467b8bb30 kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe0467b8bbe0 witness_checkorder() at witness_checkorder+0xe24/frame 0xfffffe0467b8bc70 __lockmgr_args() at __lockmgr_args+0x9d9/frame 0xfffffe0467b8bdb0 ffs_lock() at ffs_lock+0x92/frame 0xfffffe0467b8be00 VOP_LOCK1_APV() at VOP_LOCK1_APV+0xfc/frame 0xfffffe0467b8be30 _vn_lock() at _vn_lock+0xd2/frame 0xfffffe0467b8bea0 vn_rdwr() at vn_rdwr+0x1c1/frame 0xfffffe0467b8bf80 nfsrv_writestable() at nfsrv_writestable+0xbd/frame 0xfffffe0467b8bff0 nfsrv_openupdate() at nfsrv_openupdate+0x557/frame 0xfffffe0467b8c480 nfsrvd_openconfirm() at nfsrvd_openconfirm+0x175/frame 0xfffffe0467b8c560 nfsrvd_dorpc() at nfsrvd_dorpc+0xf66/frame 0xfffffe0467b8c720 nfssvc_program() at nfssvc_program+0x4e6/frame 0xfffffe0467b8c8d0 svc_run_internal() at svc_run_internal+0xbb7/frame 0xfffffe0467b8ca60 svc_thread_start() at svc_thread_start+0xb/frame 0xfffffe0467b8ca70 fork_exit() at fork_exit+0x84/frame 0xfffffe0467b8cab0 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0467b8cab0 --- trap 0xc, rip = 0x80089242a, rsp = 0x7fffffffe5d8, rbp = 0x7fffffffe880 --- Any ideas? -a