From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755377AbYIXS40 (ORCPT ); Wed, 24 Sep 2008 14:56:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752435AbYIXS4J (ORCPT ); Wed, 24 Sep 2008 14:56:09 -0400 Received: from mx2.suse.de ([195.135.220.15]:40799 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752616AbYIXS4H (ORCPT ); Wed, 24 Sep 2008 14:56:07 -0400 Message-ID: <48DA8D27.5080908@suse.com> Date: Wed, 24 Sep 2008 14:55:35 -0400 From: Jeff Mahoney Organization: SUSE Labs, Novell, Inc User-Agent: Thunderbird 2.0.0.16 (X11/20080720) MIME-Version: 1.0 To: Jesse Brandeburg Cc: linux-kernel , Ingo Molnar , arjan@linux.intel.com, reiserfs-devel@vger.kernel.org, peterz@infradead.org Subject: Re: [LOCKDEP linux-2.6.27-rc7] reiserfs circular locking References: <4807377b0809241139x18ea8ce4x7dbc66ba680be3e7@mail.gmail.com> In-Reply-To: <4807377b0809241139x18ea8ce4x7dbc66ba680be3e7@mail.gmail.com> X-Enigmail-Version: 0.95.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Jesse Brandeburg wrote: > while debugging another issue and just using git I got: > > Sep 23 23:23:25 jbrandeb-bw kernel: [ INFO: possible circular locking > dependency detected ] > Sep 23 23:23:26 jbrandeb-bw syslog-ng[3750]: new configuration initialized > Sep 23 23:23:25 jbrandeb-bw kernel: 2.6.27-rc7-jesse-00036-g146761c #4 > Sep 23 23:23:26 jbrandeb-bw syslog-ng[3750]: Changing permissions on > special file /dev/xconsole > Sep 23 23:23:26 jbrandeb-bw syslog-ng[3750]: Changing permissions on > special file /dev/tty10 > Sep 23 23:23:26 jbrandeb-bw kernel:· > Sep 23 23:23:26 jbrandeb-bw kernel: -> #2 > (&REISERFS_SB(s)->xattr_dir_sem){----}: > Sep 23 23:23:26 jbrandeb-bw kernel: [] > validate_chain+0x946/0xbe6 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > __lock_acquire+0x6a5/0x70e > Sep 23 23:23:26 jbrandeb-bw kernel: [] > lock_acquire+0x55/0x71 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > down_read+0x50/0x80 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > reiserfs_listxattr+0x85/0x152 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > vfs_listxattr+0x50/0x82 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > listxattr+0x61/0xb9 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > sys_llistxattr+0x46/0x5f > Sep 23 23:23:26 jbrandeb-bw kernel: [] > system_call_fastpath+0x16/0x1b > Sep 23 23:23:26 jbrandeb-bw kernel: [] > 0xffffffffffffffff > Sep 23 23:23:26 jbrandeb-bw kernel:· > Sep 23 23:23:26 jbrandeb-bw kernel: -> #1 (&REISERFS_I(inode)->xattr_sem){----}: > Sep 23 23:23:26 jbrandeb-bw kernel: [] > validate_chain+0x946/0xbe6 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > __lock_acquire+0x6a5/0x70e > Sep 23 23:23:26 jbrandeb-bw kernel: [] > lock_acquire+0x55/0x71 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > down_read+0x50/0x80 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > reiserfs_cache_default_acl+0x46/0xcd > Sep 23 23:23:26 jbrandeb-bw kernel: [] > reiserfs_create+0x53/0x1dd > Sep 23 23:23:26 jbrandeb-bw kernel: [] > vfs_create+0xa7/0x11d > Sep 23 23:23:26 jbrandeb-bw kernel: [] > do_filp_open+0x219/0x7de > Sep 23 23:23:26 jbrandeb-bw kernel: [] > do_sys_open+0x58/0xd8 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > sys_open+0x20/0x22 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > system_call_fastpath+0x16/0x1b > Sep 23 23:23:26 jbrandeb-bw kernel: [] > 0xffffffffffffffff > Sep 23 23:23:26 jbrandeb-bw kernel:· > Sep 23 23:23:26 jbrandeb-bw kernel: -> #0 (&type->i_mutex_dir_key#4){--..}: > Sep 23 23:23:26 jbrandeb-bw kernel: [] > validate_chain+0x62e/0xbe6 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > __lock_acquire+0x6a5/0x70e > Sep 23 23:23:26 jbrandeb-bw kernel: [] > lock_acquire+0x55/0x71 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > mutex_lock_nested+0xfe/0x28b > Sep 23 23:23:26 jbrandeb-bw kernel: [] > vfs_rmdir+0x5f/0xe8 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > reiserfs_delete_xattrs+0x110/0x171 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > reiserfs_delete_inode+0x46/0xc9 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > generic_delete_inode+0x88/0x108 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > generic_drop_inode+0x1c/0x174 > Sep 23 23:23:26 jbrandeb-bw kernel: [] iput+0x66/0x6a > Sep 23 23:23:26 jbrandeb-bw kernel: [] > do_unlinkat+0xff/0x176 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > sys_unlink+0x16/0x18 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > system_call_fastpath+0x16/0x1b > Sep 23 23:23:26 jbrandeb-bw kernel: [] > 0xffffffffffffffff > Sep 23 23:23:26 jbrandeb-bw kernel:· > Sep 23 23:23:26 jbrandeb-bw kernel: other info that might help us debug this: > Sep 23 23:23:26 jbrandeb-bw kernel:· > Sep 23 23:23:26 jbrandeb-bw kernel: 1 lock held by git-merge-recur/5032: > Sep 23 23:23:26 jbrandeb-bw kernel: #0: > (&REISERFS_SB(s)->xattr_dir_sem){----}, at: [] > reiserfs_delete_xattrs+0x104/0x171 > Sep 23 23:23:26 jbrandeb-bw kernel:· > Sep 23 23:23:26 jbrandeb-bw kernel: stack backtrace: > Sep 23 23:23:26 jbrandeb-bw kernel: Pid: 5032, comm: git-merge-recur > Not tainted 2.6.27-rc7-jesse-00036-g146761c #4 > Sep 23 23:23:26 jbrandeb-bw kernel:· > Sep 23 23:23:26 jbrandeb-bw kernel: Call Trace: > Sep 23 23:23:26 jbrandeb-bw kernel: [] > print_circular_bug_tail+0xba/0xc5 > Sep 23 23:23:26 jbrandeb-bw kernel: [] ? > print_circular_bug_entry+0x48/0x4f > Sep 23 23:23:26 jbrandeb-bw kernel: [] > validate_chain+0x62e/0xbe6 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > __lock_acquire+0x6a5/0x70e > Sep 23 23:23:26 jbrandeb-bw kernel: [] lock_acquire+0x55/0x71 > Sep 23 23:23:26 jbrandeb-bw kernel: [] ? vfs_rmdir+0x5f/0xe8 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > mutex_lock_nested+0xfe/0x28b > Sep 23 23:23:26 jbrandeb-bw kernel: [] ? vfs_rmdir+0x5f/0xe8 > Sep 23 23:23:26 jbrandeb-bw kernel: [] ? vfs_rmdir+0x5f/0xe8 > Sep 23 23:23:26 jbrandeb-bw kernel: [] vfs_rmdir+0x5f/0xe8 > Sep 23 23:23:26 jbrandeb-bw kernel: [] ? > reiserfs_delete_xattrs+0x104/0x171 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > reiserfs_delete_xattrs+0x110/0x171 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > reiserfs_delete_inode+0x46/0xc9 > Sep 23 23:23:26 jbrandeb-bw kernel: [] ? > reiserfs_delete_inode+0x0/0xc9 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > generic_delete_inode+0x88/0x108 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > generic_drop_inode+0x1c/0x174 > Sep 23 23:23:26 jbrandeb-bw kernel: [] iput+0x66/0x6a > Sep 23 23:23:26 jbrandeb-bw kernel: [] do_unlinkat+0xff/0x176 > Sep 23 23:23:26 jbrandeb-bw kernel: [] ? > trace_hardirqs_on_thunk+0x3a/0x3f > Sep 23 23:23:26 jbrandeb-bw kernel: [] ? > trace_hardirqs_on_caller+0xf1/0x115 > Sep 23 23:23:26 jbrandeb-bw kernel: [] ? > trace_hardirqs_on_thunk+0x3a/0x3f > Sep 23 23:23:26 jbrandeb-bw kernel: [] sys_unlink+0x16/0x18 > Sep 23 23:23:26 jbrandeb-bw kernel: [] > system_call_fastpath+0x16/0x1b > Sep 23 23:23:26 jbrandeb-bw kernel:· > > may be related to http://bugzilla.kernel.org/show_bug.cgi?id=9136 > > .config or other questions gladly answered. I have a reiserfs patch set that should address this. I haven't submitted it recently because I'm chasing down a reiserfs bug report that may or may not be related to the patch set. You can grab the patch set out of an opensuse kernel src rpm. - -Jeff - -- Jeff Mahoney SUSE Labs -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iEYEARECAAYFAkjajScACgkQLPWxlyuTD7JthQCeOLvlAhYlYo43qANcDbYifwgZ Ww8AoJlnGF0mL0ok8DGVtX/l7asLqIti =I0Br -----END PGP SIGNATURE-----