Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S942028AbcJFNmC (ORCPT ); Thu, 6 Oct 2016 09:42:02 -0400 Received: from gum.cmpxchg.org ([85.214.110.215]:57838 "EHLO gum.cmpxchg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S941990AbcJFNlv (ORCPT ); Thu, 6 Oct 2016 09:41:51 -0400 Date: Thu, 6 Oct 2016 15:41:45 +0200 From: Johannes Weiner To: Dave Jones Cc: Linux Kernel , linux-mm@kvack.org Subject: Re: page_cache_tree_insert WARN_ON hit on 4.8+ Message-ID: <20161006134145.GA13177@cmpxchg.org> References: <20161004170955.n25polpcsotmwcdq@codemonkey.org.uk> <20161004173425.GA1223@cmpxchg.org> <20161004174645.urwwmvgibabaokjn@codemonkey.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20161004174645.urwwmvgibabaokjn@codemonkey.org.uk> User-Agent: Mutt/1.7.0 (2016-08-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 596 Lines: 12 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