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 X-Spam-Level: X-Spam-Status: No, score=-3.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 39BEDC55183 for ; Tue, 21 Apr 2020 17:15:47 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 00DEB2070B for ; Tue, 21 Apr 2020 17:15:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="X9i2yk4C" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 00DEB2070B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 95EB78E0005; Tue, 21 Apr 2020 13:15:46 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 90E8A8E0003; Tue, 21 Apr 2020 13:15:46 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 84BA38E0005; Tue, 21 Apr 2020 13:15:46 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0119.hostedemail.com [216.40.44.119]) by kanga.kvack.org (Postfix) with ESMTP id 6E70E8E0003 for ; Tue, 21 Apr 2020 13:15:46 -0400 (EDT) Received: from smtpin20.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 28BFB8245571 for ; Tue, 21 Apr 2020 17:15:46 +0000 (UTC) X-FDA: 76732514292.20.group69_3253abedbb34c X-HE-Tag: group69_3253abedbb34c X-Filterd-Recvd-Size: 2184 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf21.hostedemail.com (Postfix) with ESMTP for ; Tue, 21 Apr 2020 17:15:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:In-Reply-To:References; bh=W8axj1eYgRYYRX2IQ40eJJVIFVT2v4KgmokU8bsvFAY=; b=X9i2yk4C0hVTSdB1gn4yaNizE5 0wS91equLcghgOBIh0bXpLvdn99Ku7W68bTpV5ABMV+2Z0ZbgoAZhZjwZLwNIozlVzaypdnCYBijD mB8SAmUHf20zWC1DsZMKeaNH3yxKkyN5DbvrJvLshbzhNS4RcYozf3h/R9K7I3kYmoO3St7GDFgAv Rl/ZiuLTng2AEJWW/fkauc+uLnEZWnKeRf9nfgc3bIGDxgAZfoMXJo76pz+hm5wDagEnYBMTn4j1V yB8emZ/Ts2sX3h6l7jmbr1ffaRwGpGtq4m9V9pDCOFPTNGPLZhv7ksynot0BRpHmrRNLMuPJRXgUk rgr7P6nw==; Received: from [2001:4bb8:191:e12c:c70:4a89:bc61:3] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jQwUn-0006Zf-1w; Tue, 21 Apr 2020 17:15:41 +0000 From: Christoph Hellwig To: Kees Cook , Iurii Zaikin Cc: Alexei Starovoitov , Daniel Borkmann , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org Subject: pass kernel pointers to the sysctl ->proc_handler method v2 Date: Tue, 21 Apr 2020 19:15:34 +0200 Message-Id: <20200421171539.288622-1-hch@lst.de> X-Mailer: git-send-email 2.26.1 MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Content-Transfer-Encoding: quoted-printable 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: Hi all, this series changes the sysctl ->proc_handler methods to take kernel pointers. This simplifies some of the pointer handling in the methods (which could probably be further simplified now), and gets rid of the set_fs address space overrides used by bpf. Changes since v1: - drop a patch merged by Greg - don't copy data out on a write - fix buffer allocation in bpf