Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754235AbcJFOC3 (ORCPT ); Thu, 6 Oct 2016 10:02:29 -0400 Received: from arcturus.aphlor.org ([188.246.204.175]:41246 "EHLO arcturus.aphlor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752145AbcJFOCV (ORCPT ); Thu, 6 Oct 2016 10:02:21 -0400 Date: Thu, 6 Oct 2016 10:02:17 -0400 From: Dave Jones To: Johannes Weiner Cc: Linux Kernel , linux-mm@kvack.org Subject: Re: page_cache_tree_insert WARN_ON hit on 4.8+ Message-ID: <20161006140217.a7hsj3lzu5v3v6ig@codemonkey.org.uk> Mail-Followup-To: Dave Jones , Johannes Weiner , Linux Kernel , linux-mm@kvack.org References: <20161004170955.n25polpcsotmwcdq@codemonkey.org.uk> <20161004173425.GA1223@cmpxchg.org> <20161004174645.urwwmvgibabaokjn@codemonkey.org.uk> <20161006134145.GA13177@cmpxchg.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20161006134145.GA13177@cmpxchg.org> User-Agent: NeoMutt/20160916 (1.7.0) X-Spam-Flag: skipped (authorised relay user) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 767 Lines: 17 On Thu, Oct 06, 2016 at 03:41:45PM +0200, Johannes Weiner wrote: > On Tue, Oct 04, 2016 at 01:46:45PM -0400, Dave Jones wrote: > > On Tue, Oct 04, 2016 at 07:34:25PM +0200, Johannes Weiner wrote: > > > On Tue, Oct 04, 2016 at 01:09:55PM -0400, Dave Jones wrote: > > > > Hit this during a trinity run. > > > > Kernel built from v4.8-1558-g21f54ddae449 > > > > > > > > WARNING: CPU: 0 PID: 5670 at ./include/linux/swap.h:276 page_cache_tree_insert+0x198/0x1b0 > > To tie up this thread, we tracked it down in another thread and Linus > merged a fix for this: > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d3798ae8c6f3767c726403c2ca6ecc317752c9dd Yep, can confirm I've seen no reoccurrences since that merge. Dave