From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:56379 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753313AbcBTOpg (ORCPT ); Sat, 20 Feb 2016 09:45:36 -0500 Date: Sat, 20 Feb 2016 09:45:34 -0500 From: Brian Foster To: Stefan Priebe Cc: "xfs@oss.sgi.com" , linux-fsdevel@vger.kernel.org, "xfs-masters@oss.sgi.com" Subject: Re: xfs trace in 4.4.2 Message-ID: <20160220144533.GA36182@bfoster.bfoster> References: <56C81D94.7090603@profihost.ag> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <56C81D94.7090603@profihost.ag> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Sat, Feb 20, 2016 at 09:02:28AM +0100, Stefan Priebe wrote: > Hi, > > got this one today. Not sure if this is a bug. > That looks like the releasepage() delayed allocation block warning. I'm not sure we've had any fixes for (or reports of) that issue since the v4.2 timeframe. What is the xfs_info of the associated filesystem? Also, do you have any insight as to the possible reproducer application or workload? Is this reproducible at all? Note that this is a WARN_ON_ONCE(), so the warning won't fire again regardless until after a reboot. Brian > [67674.907736] ------------[ cut here ]------------ > [67674.955858] WARNING: CPU: 5 PID: 197 at fs/xfs/xfs_aops.c:1232 > xfs_vm_releasepage+0xa9/0xe0() > [67675.005345] Modules linked in: dm_mod netconsole ipt_REJECT > nf_reject_ipv4 mpt3sas raid_class xt_multiport iptable_filter ip_tabl > es x_tables 8021q garp bonding coretemp loop usbhid ehci_pci ehci_hcd > sb_edac ipmi_si usbcore i2c_i801 edac_core usb_common ipmi_msg > handler button btrfs xor raid6_pq raid1 md_mod sg igb sd_mod i2c_algo_bit > ixgbe ahci i2c_core mdio isci libahci libsas ptp megaraid_ > sas scsi_transport_sas pps_core > [67675.221939] CPU: 5 PID: 197 Comm: kswapd0 Not tainted 4.4.2+1-ph #1 > [67675.277120] Hardware name: Supermicro > X9DRi-LN4+/X9DR3-LN4+/X9DRi-LN4+/X9DR3-LN4+, BIOS 3.2 03/04/2015 > [67675.335176] ffffffffa3a5065d ffff88007950fa98 ffffffffa33bd4e1 > 0000000000000001 > [67675.392983] 0000000000000000 ffff88007950fad8 ffffffffa3083587 > ffff88007950fae8 > [67675.449743] 0000000000000001 ffffea0020883480 ffff880cf4b9cdd0 > ffffea00208834a0 > [67675.506112] Call Trace: > [67675.561285] [] dump_stack+0x45/0x64 > [67675.619364] [] warn_slowpath_common+0x97/0xe0 > [67675.675719] [] warn_slowpath_null+0x1a/0x20 > [67675.731113] [] xfs_vm_releasepage+0xa9/0xe0 > [67675.786116] [] ? page_mkclean_one+0xd0/0xd0 > [67675.844216] [] ? anon_vma_prepare+0x150/0x150 > [67675.903862] [] try_to_release_page+0x32/0x50 > [67675.957625] [] shrink_active_list+0x3ce/0x3e0 > [67676.011497] [] shrink_lruvec+0x687/0x7d0 > [67676.064980] [] shrink_zone+0xdc/0x2c0 > [67676.118828] [] kswapd+0x4f9/0x930 > [67676.172075] [] ? > mem_cgroup_shrink_node_zone+0x150/0x150 > [67676.225139] [] kthread+0xc9/0xe0 > [67676.277539] [] ? kthread_stop+0xe0/0xe0 > [67676.330124] [] ret_from_fork+0x3f/0x70 > [67676.381816] [] ? kthread_stop+0xe0/0xe0 > [67676.433499] ---[ end trace cb1827fe308f7f6b ]--- > > Greets Stefan > > _______________________________________________ > xfs mailing list > xfs@oss.sgi.com > http://oss.sgi.com/mailman/listinfo/xfs