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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 730E5EB64D9 for ; Mon, 19 Jun 2023 21:39:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229520AbjFSVjr (ORCPT ); Mon, 19 Jun 2023 17:39:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53956 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229489AbjFSVjq (ORCPT ); Mon, 19 Jun 2023 17:39:46 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2EF151AC; Mon, 19 Jun 2023 14:39:46 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id B723760EFB; Mon, 19 Jun 2023 21:39:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CFE6AC433C8; Mon, 19 Jun 2023 21:39:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1687210785; bh=LmVkQX/PSgud5C5kaFd8Qi9HycDPJy7pU+bGS1katlc=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=Mlg4an2EPq/y60fm8q9ztbq7AQ6sDIaeGahpxiwBcr6i3CkcqiIjF3YlDbvXVC1lS pxuHV/BIMzgVdwklNyQhrtNRzmghjYPtxCU17osbQYiZJ9QNvhFQhXIs5v8fmCLwlB xbWoPLvRsYSdlCMBfHsMs14TAqiEtlnSsUhuz0tk= Date: Mon, 19 Jun 2023 14:39:44 -0700 From: Andrew Morton To: Will Deacon Cc: Stephen Rothwell , "Liam R. Howlett" , Linus Torvalds , Linux Kernel Mailing List , Linux Next Mailing List , catalin.marinas@arm.com Subject: Re: linux-next: manual merge of the mm tree with Linus' tree Message-Id: <20230619143944.fb445cb3f28bb839942ed4ae@linux-foundation.org> In-Reply-To: <20230619204309.GA13937@willie-the-truck> References: <20230619092355.133c5cdb@canb.auug.org.au> <20230619204309.GA13937@willie-the-truck> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org On Mon, 19 Jun 2023 21:43:11 +0100 Will Deacon wrote: > > /* > > * Do not downgrade mmap_lock if we are next to VM_GROWSDOWN or > > * VM_GROWSUP VMA. Such VMAs can change their size under > > This resolution seems to be causing horrible problems on arm64 with 16k > pages. I see things like the crash below, but the two branches being merged > are fine on their own. I've dropped the mm.git side of this conflict so next -next should be better.