From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id C6EA1C433F5 for ; Fri, 25 Feb 2022 23:41:28 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 4352B8D0002; Fri, 25 Feb 2022 18:41:28 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 3E3658D0001; Fri, 25 Feb 2022 18:41:28 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2D35D8D0002; Fri, 25 Feb 2022 18:41:28 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.27]) by kanga.kvack.org (Postfix) with ESMTP id 1E70D8D0001 for ; Fri, 25 Feb 2022 18:41:28 -0500 (EST) Received: from smtpin08.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id EA56D230CA for ; Fri, 25 Feb 2022 23:41:27 +0000 (UTC) X-FDA: 79182926214.08.22031ED Received: by imf08.hostedemail.com (Postfix, from userid 200) id A56EF161074; Fri, 25 Feb 2022 23:00:42 +0000 (UTC) Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by imf08.hostedemail.com (Postfix) with ESMTP id 2319C166AD6 for ; Fri, 25 Feb 2022 23:00:41 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 27D26B833B3; Fri, 25 Feb 2022 23:00:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 460EAC340E7; Fri, 25 Feb 2022 23:00:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1645830038; bh=u/Cfc6nA/AuYeqwihPJqtVG9625r5X8t5oWUtwBNIpY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=O/QYnVXTrRKrECDWepkxzwsz6bBq6tBI7zT54e52938MZ9xyC3OLUal7eY55kTem1 eLsaugpGNVvPvtfgDOJME+STNObFUmJTULm0Agkj/RKB9xU1x5SW56ioSK+qdMdug7 T049RwqD1+eh1w019ZCmFnd/vzZ4CYTvTLrwlW+4bfX5RhZdUhsq9aP4SpTvs6To83 4WHkL/Bo4XrekA2fmStkFEAWUE4X8f9x6VjiOGrblezcNhG7+a8Hpx4u/H8E6hh8iU MAdo0FLzJtS0UwdrbS2OWJQ1z2GM7jfdxVRIzkSDKlL8H9FjrB4brVjbDDAgref4se PZcAUzUGVtVBA== Date: Fri, 25 Feb 2022 16:00:34 -0700 From: Nathan Chancellor To: Qian Cai Cc: Liam Howlett , "maple-tree@lists.infradead.org" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Andrew Morton , Mark Brown Subject: Re: [PATCH v6 00/71] Introducing the Maple Tree Message-ID: References: <20220215143728.3810954-1-Liam.Howlett@oracle.com> <20220225190846.u4fwebimd5ejfdpd@revolver> <20220225202334.bsw5t3retcchpn2e@revolver> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: 2319C166AD6 X-Stat-Signature: s4ipddz4t7dxkqxirsghfk85h4nnqsyd X-Rspam-User: Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b="O/QYnVXT"; spf=pass (imf08.hostedemail.com: domain of nathan@kernel.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=nathan@kernel.org; dmarc=pass (policy=none) header.from=kernel.org X-Rspamd-Server: rspam07 X-HE-Tag: 1645830041-295250 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Feb 25, 2022 at 03:46:52PM -0500, Qian Cai wrote: > On Fri, Feb 25, 2022 at 08:23:41PM +0000, Liam Howlett wrote: > > I just booted an arm64 VM with my build and kasan enabled with no issue. > > Could you please send me your config file for the build? > > On linux-next, I just do: > > $ make arch=arm64 defconfig debug.config [1] > > Then, I just generate some memory pressume into swapping/OOM Killer to > trigger it. > > [1] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/kernel/configs/debug.config Is the stacktrace [1] related to the conflict that Mark encountered [2] while merging the maple and folio trees? Booting a next-20220223 kernel on my Raspberry Pi 3 and 4 shows constant NULL pointer dereferences (just ARCH=arm and ARCH=arm64 defconfigs) and reverting the folio and maple tree merges makes everything work properly again. [1]: https://lore.kernel.org/r/YhhRrBpXTFolUAKi@qian/ [2]: https://lore.kernel.org/r/20220224011653.1380557-1-broonie@kernel.org/ Cheers, Nathan