From owner-freebsd-current@FreeBSD.ORG Tue Sep 6 14:01:59 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 11E5B106564A for ; Tue, 6 Sep 2011 14:01:59 +0000 (UTC) (envelope-from kmacybsd@gmail.com) Received: from mail-vx0-f182.google.com (mail-vx0-f182.google.com [209.85.220.182]) by mx1.freebsd.org (Postfix) with ESMTP id C122E8FC0A for ; Tue, 6 Sep 2011 14:01:58 +0000 (UTC) Received: by vxh11 with SMTP id 11so5935463vxh.13 for ; Tue, 06 Sep 2011 07:01:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=9qynx9Bxbl+TU9D9S2P5bOZYTL7sj018Bp3e8b01+bs=; b=VvZ32IiqxlNn0dwP+R86bt2xXCIHFrTS/EDXNVYex0TBjpSouhcMpp8DxfQFTVNt2H 6fm1fmohi15OmaaQI3n2R0mkO16nRaD4Rjgp7sKOl3MGGXyM7J1fA1V3kzgl1TM/gakh orlnlplWb4rrs1SxHmHNI9GAder4GopQRpuXY= MIME-Version: 1.0 Received: by 10.52.93.116 with SMTP id ct20mr1495407vdb.29.1315317718049; Tue, 06 Sep 2011 07:01:58 -0700 (PDT) Sender: kmacybsd@gmail.com Received: by 10.52.113.169 with HTTP; Tue, 6 Sep 2011 07:01:58 -0700 (PDT) In-Reply-To: <4E661911.80801@vadimdenisov.ru> References: <4E661911.80801@vadimdenisov.ru> Date: Tue, 6 Sep 2011 16:01:58 +0200 X-Google-Sender-Auth: 057Uw1VC726lMGjRCAW0ZaITZfM Message-ID: From: "K. Macy" To: Vadim Denisov Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: freebsd-current@freebsd.org Subject: Re: lock order reversal X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Tue, 06 Sep 2011 14:01:59 -0000 When WITNESS support was added to lockmgr locks a number of longstanding LORs were exposed in the process. I can't comment on whether or not they'll be fixed or the warnings will some day be silenced. On Tue, Sep 6, 2011 at 2:58 PM, Vadim Denisov wrote: > I install current on last week > I have some messages in dmesg -a: > lock order reversal: > =A01st 0xc81ba278 ufs (ufs) @ /usr/src/sys/ufs/ffs/ffs_snapshot.c:425 > =A02nd 0xe0f566d0 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2658 > =A03rd 0xc7d89168 ufs (ufs) @ /usr/src/sys/ufs/ffs/ffs_snapshot.c:546 > KDB: stack backtrace: > db_trace_self_wrapper(c0c353ac,616e735f,6f687370,3a632e74,a363435,...) at > db_trace_self_wrapper+0x26 > kdb_backtrace(c088dd7b,c0c38d9c,c7535098,c75385d0,ef9e1404,...) at > kdb_backtrace+0x2a > _witness_debugger(c0c38d9c,c7d89168,c0c2816c,c75385d0,c0c56442,...) at > _witness_debugger+0x25 > witness_checkorder(c7d89168,9,c0c56442,222,0,...) at > witness_checkorder+0x839 > __lockmgr_args(c7d89168,80100,c7d89188,0,0,...) at __lockmgr_args+0x824 > ffs_lock(ef9e152c,c0ecca08,c7dc1c30,80100,c7d89110,...) at ffs_lock+0x8a > VOP_LOCK1_APV(c0d3c680,ef9e152c,ef9e154c,c0d4caa0,c7d89110,...) at > VOP_LOCK1_APV+0xb5 > _vn_lock(c7d89110,80100,c0c56442,222,c755ce80,...) at _vn_lock+0x5e > ffs_snapshot(c7beba20,c7b753e0,c0c59850,1a2,0,...) at ffs_snapshot+0x14fc > ffs_mount(c7beba20,c7bf5d00,ff,394,c7dc1c30,...) at ffs_mount+0x1c13 > vfs_donmount(c7dc1b80,211000,c7787780,c7787780,c7dbb588,...) at > vfs_donmount+0x1219 > nmount(c7dc1b80,ef9e1cec,c087a16c,ef9e1d80,0,...) at nmount+0x84 > syscallenter(c7dc1b80,ef9e1ce4,ef9e1d1c,c0acbf86,c0d90c80,...) at > syscallenter+0x263 > syscall(ef9e1d28) at syscall+0x34 > Xint0x80_syscall() at Xint0x80_syscall+0x21 > --- syscall (378, FreeBSD ELF32, nmount), eip =3D 0x280fb61b, esp =3D > 0xbfbfea9c, ebp =3D 0xbfbfede8 --- > lock order reversal: > =A01st 0xe0f566d0 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2658 > =A02nd 0xc7563c9c snaplk (snaplk) @ /usr/src/sys/ufs/ffs/ffs_snapshot.c:8= 18 > KDB: stack backtrace: > db_trace_self_wrapper(c0c353ac,662f7366,735f7366,7370616e,2e746f68,...) a= t > db_trace_self_wrapper+0x26 > kdb_backtrace(c088dd7b,c0c38d83,c7535098,c7538978,ef9e1404,...) at > kdb_backtrace+0x2a > _witness_debugger(c0c38d83,c7563c9c,c0c564a4,c7538978,c0c56442,...) at > _witness_debugger+0x25 > witness_checkorder(c7563c9c,9,c0c56442,332,c81ba298,...) at > witness_checkorder+0x839 > __lockmgr_args(c7563c9c,80400,c81ba298,0,0,...) at __lockmgr_args+0x824 > ffs_lock(ef9e152c,e0ef5790,100000,80400,c81ba220,...) at ffs_lock+0x8a > VOP_LOCK1_APV(c0d3c680,ef9e152c,e0ef57ec,c0d4caa0,c81ba220,...) at > VOP_LOCK1_APV+0xb5 > _vn_lock(c81ba220,80400,c0c56442,332,0,...) at _vn_lock+0x5e > ffs_snapshot(c7beba20,c7b753e0,c0c59850,1a2,0,...) at ffs_snapshot+0x298e > ffs_mount(c7beba20,c7bf5d00,ff,394,c7dc1c30,...) at ffs_mount+0x1c13 > vfs_donmount(c7dc1b80,211000,c7787780,c7787780,c7dbb588,...) at > vfs_donmount+0x1219 > nmount(c7dc1b80,ef9e1cec,c087a16c,ef9e1d80,0,...) at nmount+0x84 > syscallenter(c7dc1b80,ef9e1ce4,ef9e1d1c,c0acbf86,c0d90c80,...) at > syscallenter+0x263 > syscall(ef9e1d28) at syscall+0x34 > Xint0x80_syscall() at Xint0x80_syscall+0x21 > --- syscall (378, FreeBSD ELF32, nmount), eip =3D 0x280fb61b, esp =3D > 0xbfbfea9c, ebp =3D 0xbfbfede8 --- > lock order reversal: > =A01st 0xc7563c9c snaplk (snaplk) @ /usr/src/sys/kern/vfs_vnops.c:307 > =A02nd 0xc81ba278 ufs (ufs) @ /usr/src/sys/ufs/ffs/ffs_snapshot.c:1620 > KDB: stack backtrace: > db_trace_self_wrapper(c0c353ac,616e735f,6f687370,3a632e74,30323631,...) a= t > db_trace_self_wrapper+0x26 > kdb_backtrace(c088dd7b,c0c38d83,c7538978,c75385d0,ef9e16c8,...) at > kdb_backtrace+0x2a > _witness_debugger(c0c38d83,c81ba278,c0c2816c,c75385d0,c0c56442,...) at > _witness_debugger+0x25 > witness_checkorder(c81ba278,9,c0c56442,654,0,...) at > witness_checkorder+0x839 > __lockmgr_args(c81ba278,80000,0,0,0,...) at __lockmgr_args+0x824 > ffs_snapremove(c81ba220,8,c0c3e10a,5e8,c7535098,...) at ffs_snapremove+0x= 11f > ffs_truncate(c81ba220,0,0,c00,0,...) at ffs_truncate+0x577 > ufs_inactive(ef9e1a9c,c81ba298,c81ba220,c81ba298,ef9e1ab4,...) at > ufs_inactive+0x1f8 > VOP_INACTIVE_APV(c0d3c680,ef9e1a9c,c0c40a67,94e,c0d4ca60,...) at > VOP_INACTIVE_APV+0xa5 > vinactive(c0d3c680,ef9e1ad0,c0c40a67,8a5,0,...) at vinactive+0x8e > vputx(ef9e1b38,c08febda,c81ba220,ef9e1b14,c0c41f00,...) at vputx+0x2f8 > vput(c81ba220,ef9e1b14,c0c41f00,133,0,...) at vput+0x10 > vn_close(c81ba220,1,c755ce00,c7dc1b80,0,...) at vn_close+0x19a > vn_closefile(c7c300a8,c7dc1b80,c0c2706c,0,c7c300a8,...) at vn_closefile+0= xe4 > _fdrop(c7c300a8,c7dc1b80,0,ef9e1bfc,0,c0ecc9d8,c7dc1c30,c0d28da0,c0ecc9d8= ,c0c2af54,c7dc1b80,c7b05d2c,4ce,ef9e1c0c,c085d087,c7b05d2c,8,c0c2af54,c7c30= 0a8) > at _fdrop+0x43 > closef(c7c300a8,c7dc1b80,4ce,ef9e1c30,c7b05d2c,...) at closef+0x2b0 > kern_close(c7dc1b80,4,ef9e1c7c,c0897ff3,c7dc1b80,...) at kern_close+0x139 > close(c7dc1b80,ef9e1cec,ef9e1d28,c0c3767a,0,...) at close+0x1a > syscallenter(c7dc1b80,ef9e1ce4,ef9e1ce4,0,c0d819f0,...) at > syscallenter+0x263 > syscall(ef9e1d28) at syscall+0x34 > Xint0x80_syscall() at Xint0x80_syscall+0x21 > --- syscall (6, FreeBSD ELF32, close), eip =3D 0x281a3283, esp =3D 0xbfbf= ea9c, > ebp =3D 0xbfbfede8 --- > Sep =A05 12:38:10 =A0su: denisov to root on /dev/pts/0 > lock order reversal: > =A01st 0xe10fbc60 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2658 > =A02nd 0xc7c5d600 dirhash (dirhash) @ /usr/src/sys/ufs/ufs/ufs_dirhash.c:= 284 > KDB: stack backtrace: > db_trace_self_wrapper(c0c353ac,7366752f,7366752f,7269645f,68736168,...) a= t > db_trace_self_wrapper+0x26 > kdb_backtrace(c088dd7b,c0c38d83,c7535098,c7538638,efac7a24,...) at > kdb_backtrace+0x2a > _witness_debugger(c0c38d83,c7c5d600,c0c5a792,c7538638,c0c5a417,...) at > _witness_debugger+0x25 > witness_checkorder(c7c5d600,9,c0c5a417,11c,0,...) at > witness_checkorder+0x839 > _sx_xlock(c7c5d600,0,c0c5a417,11c,e7880018,...) at _sx_xlock+0x85 > ufsdirhash_acquire(0,e,c7800800,e10fbc00,e7880018,...) at > ufsdirhash_acquire+0x35 > ufsdirhash_remove(c854c9f8,e7880018,18,efac7ab4,efac7ab0,...) at > ufsdirhash_remove+0x14 > ufs_dirremove(c8536cc0,c8582910,500800c,0,c8536cc0,...) at > ufs_dirremove+0x143 > ufs_remove(efac7c00,0,0,0,c8545550,...) at ufs_remove+0x6e > VOP_REMOVE_APV(c0d3c680,efac7c00,c8545550,efac7b78,4,...) at > VOP_REMOVE_APV+0xa5 > kern_unlinkat(c7f94000,ffffff9c,284209b8,0,0,...) at kern_unlinkat+0x258 > kern_unlink(c7f94000,284209b8,0,efac7c7c,c0897ff3,...) at kern_unlink+0x2= f > unlink(c7f94000,efac7cec,efac7d28,c0c3767a,0,...) at unlink+0x22 > syscallenter(c7f94000,efac7ce4,efac7ce4,0,74b,...) at syscallenter+0x263 > syscall(efac7d28) at syscall+0x34 > Xint0x80_syscall() at Xint0x80_syscall+0x21 > --- syscall (10, FreeBSD ELF32, unlink), eip =3D 0x2817384f, esp =3D 0xbf= bfe9bc, > ebp =3D 0xbfbfe9e8 --- > > It's seriously problem? May be I must send PR? > > Vadim Denisov > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org= " >