Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932828Ab3FRNua (ORCPT ); Tue, 18 Jun 2013 09:50:30 -0400 Received: from cantor2.suse.de ([195.135.220.15]:42691 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932679Ab3FRNu3 (ORCPT ); Tue, 18 Jun 2013 09:50:29 -0400 Date: Tue, 18 Jun 2013 15:50:25 +0200 From: Michal Hocko To: Glauber Costa Cc: Dave Chinner , Andrew Morton , linux-mm@kvack.org, LKML Subject: Re: linux-next: slab shrinkers: BUG at mm/list_lru.c:92 Message-ID: <20130618135025.GK13677@dhcp22.suse.cz> References: <20130617141822.GF5018@dhcp22.suse.cz> <20130617151403.GA25172@localhost.localdomain> <20130617143508.7417f1ac9ecd15d8b2877f76@linux-foundation.org> <20130617223004.GB2538@localhost.localdomain> <20130618024623.GP29338@dastard> <20130618063104.GB20528@localhost.localdomain> <20130618082414.GC13677@dhcp22.suse.cz> <20130618104443.GH13677@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130618104443.GH13677@dhcp22.suse.cz> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6219 Lines: 136 And again, another hang. It looks like the inode deletion never finishes. The good thing is that I do not see any LRU related BUG_ONs anymore. I am going to test with the other patch in the thread. 2476 [] __wait_on_freeing_inode+0x9e/0xc0 <<< waiting for an inode to go away [] find_inode_fast+0xa1/0xc0 [] iget_locked+0x4f/0x180 [] ext4_iget+0x33/0x9f0 [] ext4_lookup+0xbc/0x160 [] lookup_real+0x20/0x60 [] lookup_open+0x175/0x1d0 [] do_last+0x2de/0x780 <<< holds i_mutex [] path_openat+0xda/0x400 [] do_filp_open+0x43/0xa0 [] do_sys_open+0x160/0x1e0 [] sys_open+0x1c/0x20 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff 11214 [] do_last+0x2c4/0x780 <<< blocked on i_mutex [] path_openat+0xda/0x400 [] do_filp_open+0x43/0xa0 [] do_sys_open+0x160/0x1e0 [] sys_open+0x1c/0x20 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff 11217 [] do_last+0x2c4/0x780 <<< blocked on i_mutex [] path_openat+0xda/0x400 [] do_filp_open+0x43/0xa0 [] do_sys_open+0x160/0x1e0 [] sys_open+0x1c/0x20 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff 11288 [] do_last+0x2c4/0x780 <<< blocked on i_mutex [] path_openat+0xda/0x400 [] do_filp_open+0x43/0xa0 [] do_sys_open+0x160/0x1e0 [] sys_open+0x1c/0x20 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff 11453 [] __wait_on_freeing_inode+0x9e/0xc0 [] find_inode_fast+0xa1/0xc0 [] iget_locked+0x4f/0x180 [] ext4_iget+0x33/0x9f0 [] ext4_lookup+0xbc/0x160 [] lookup_real+0x20/0x60 [] lookup_open+0x175/0x1d0 [] do_last+0x2de/0x780 [] path_openat+0xda/0x400 [] do_filp_open+0x43/0xa0 [] do_sys_open+0x160/0x1e0 [] sys_open+0x1c/0x20 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff 12439 [] __wait_on_freeing_inode+0x9e/0xc0 [] find_inode_fast+0xa1/0xc0 [] iget_locked+0x4f/0x180 [] ext4_iget+0x33/0x9f0 [] ext4_lookup+0xbc/0x160 [] lookup_real+0x20/0x60 [] __lookup_hash+0x34/0x40 [] path_lookupat+0x7a2/0x830 [] filename_lookup+0x33/0xd0 [] user_path_at_empty+0x7b/0xb0 [] user_path_at+0xc/0x10 [] vfs_fstatat+0x51/0xb0 [] vfs_stat+0x16/0x20 [] sys_newstat+0x1f/0x50 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff 12542 [] path_lookupat+0x792/0x830 [] filename_lookup+0x33/0xd0 [] user_path_at_empty+0x7b/0xb0 [] user_path_at+0xc/0x10 [] vfs_fstatat+0x51/0xb0 [] vfs_stat+0x16/0x20 [] sys_newstat+0x1f/0x50 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff 12588 [] path_lookupat+0x792/0x830 [] filename_lookup+0x33/0xd0 [] user_path_at_empty+0x7b/0xb0 [] user_path_at+0xc/0x10 [] vfs_fstatat+0x51/0xb0 [] vfs_stat+0x16/0x20 [] sys_newstat+0x1f/0x50 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff 12589 [] path_lookupat+0x792/0x830 [] filename_lookup+0x33/0xd0 [] user_path_at_empty+0x7b/0xb0 [] user_path_at+0xc/0x10 [] vfs_fstatat+0x51/0xb0 [] vfs_stat+0x16/0x20 [] sys_newstat+0x1f/0x50 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff 13098 [] __wait_on_freeing_inode+0x9e/0xc0 [] find_inode_fast+0xa1/0xc0 [] iget_locked+0x4f/0x180 [] ext4_iget+0x33/0x9f0 [] ext4_lookup+0xbc/0x160 [] lookup_real+0x20/0x60 [] lookup_open+0x175/0x1d0 [] do_last+0x2de/0x780 [] path_openat+0xda/0x400 [] do_filp_open+0x43/0xa0 [] do_sys_open+0x160/0x1e0 [] sys_open+0x1c/0x20 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff 19091 [] path_lookupat+0x792/0x830 [] filename_lookup+0x33/0xd0 [] user_path_at_empty+0x7b/0xb0 [] user_path_at+0xc/0x10 [] vfs_fstatat+0x51/0xb0 [] vfs_stat+0x16/0x20 [] sys_newstat+0x1f/0x50 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff 19092 [] path_lookupat+0x792/0x830 [] filename_lookup+0x33/0xd0 [] user_path_at_empty+0x7b/0xb0 [] user_path_at+0xc/0x10 [] vfs_fstatat+0x51/0xb0 [] vfs_stat+0x16/0x20 [] sys_newstat+0x1f/0x50 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff -- Michal Hocko SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/