From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx2.suse.de ([195.135.220.15]:34131 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751617AbeCSIeN (ORCPT ); Mon, 19 Mar 2018 04:34:13 -0400 Subject: Re: Kernel warning - not sure if this is important To: Peter Chant , linux-btrfs@vger.kernel.org References: <398a50db-8ae0-b933-7268-4231e08d615d@petezilla.co.uk> From: Nikolay Borisov Message-ID: Date: Mon, 19 Mar 2018 10:34:11 +0200 MIME-Version: 1.0 In-Reply-To: <398a50db-8ae0-b933-7268-4231e08d615d@petezilla.co.uk> Content-Type: text/plain; charset=utf-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 19.03.2018 10:21, Peter Chant wrote: > I got this kernel warning overnight. Possibly during or after a dedup > using duperemove. I'm not sure if that is relevent. Seems to relate to > fs/btrfs/backref.c line 1266. > > Don't know if it is important. Thought I'd post it just in case. > > I'm afraid this is a screen-shot in the old fashioned sense: > https://drive.google.com/file/d/1NelZV2ld9Yqqt8b2y2sg6aAwgevgMy4X/view?usp=sharing You are hitting a warning that was removed in : c8195a7b1ad5 ("btrfs: remove spurious WARN_ON(ref->count < 0) in find_parent_nodes") In short - you can disregard it. However, it's likely you will continue seeing it in the future unless you update to 4.16 (the commit is not tagged for stable )) > > Pete > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >