Received: by 2002:a25:1985:0:0:0:0:0 with SMTP id 127csp355404ybz; Tue, 21 Apr 2020 10:17:14 -0700 (PDT) X-Google-Smtp-Source: APiQypK0DNAKm9AKzfGmpmcWgmqjzYMfYqsMzK3RpQ/P5pzG45khFn82Zutwj30J0DVt4VA+V9M0 X-Received: by 2002:a17:906:d9cf:: with SMTP id qk15mr22798464ejb.55.1587489434299; Tue, 21 Apr 2020 10:17:14 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1587489434; cv=none; d=google.com; s=arc-20160816; b=zAAdXATU7VaZqwd1PrR99+AghCv97/q6TOrKIuYIb2aUeywKTZ989uKz1RNpXQFvFh QY0QcFIvF2Tn/8+EtuE6eaqs8OnGoimfgD0HvdpH1CUHT+v17VIE+NI01Z9yN7nbxxX8 Q2xq8r4Ac3YuslQSqwhDyrxy9Jq7lAxBhJKHNxAE5mmnr8TBTIURfYNcssw+9ERo0V3q C4h1T9tNIRN/KnIPDa4pdMuTgy+EU1iT/sYEefjNYXfmpAPQYQbTBOnstNboX+Xt5/IC ol3Q7xrjahZp4AuC1Arhw4RPYpKybVPtDMcFm/JsU2L3Qkm9sWeRWqg5ggP70FhO0lgy 1TsQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from:dkim-signature; bh=W8axj1eYgRYYRX2IQ40eJJVIFVT2v4KgmokU8bsvFAY=; b=vreLELhrMs389dWaFCo5N40hAc5fFhjQTmbZLIYE7Upro0kxQ/OQEhqngg1FKrUe8J icOUA4G6ld75iNQB8IwSEqYBOsAeu+qH6iTmH8CIDZ6qtyD+cjHAdfosm7a1FJpvGrD/ joAwOAABdOhpg67mVxi/wDnoYkDt+d4uZDLPfLbf/PO8qRnCJZjiTDazk3Ec2ekWRkRu f+6GIOCCOC1IpLf6a2am2KSskR72zCT3rLsZHFzRE/la52DhbLVF4OCBVRp7Md+/YghA ZRH2IbHBWl0lNtBfTC9U7CgKUY41aMXCrhBCfOHTmPljqAl4CE4QfHqMqDYmrE/F/t4X KHow== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=X9i2yk4C; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id p4si2033589edd.234.2020.04.21.10.16.51; Tue, 21 Apr 2020 10:17:14 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=X9i2yk4C; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729179AbgDURPp (ORCPT + 99 others); Tue, 21 Apr 2020 13:15:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46154 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1725990AbgDURPo (ORCPT ); Tue, 21 Apr 2020 13:15:44 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2056C061A41; Tue, 21 Apr 2020 10:15:44 -0700 (PDT) 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 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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