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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 D2653C433FF for ; Wed, 14 Aug 2019 02:38:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A11CA2084F for ; Wed, 14 Aug 2019 02:38:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565750319; bh=zcslmXbDP2/EosiPFy6ZMtnFs4fJr2gbROyEuLHFzO0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=GYLlBVeozUGp0ePRsBmNfP1EnxtP7v6cPu9Y1qhGZ9SIK6qQuhHnPlOsc5bE43ZxM rONGz1BFZ1Z9ZjRvGWwsqtlBa60Bwmv6tulNdKbyzEvr6jH7b5v5EtAbRM25iXJ2lG 4YG8QuulwFQ7FHuLIiF6dn6Gvjy4hQBljZHWZnE8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727741AbfHNCL6 (ORCPT ); Tue, 13 Aug 2019 22:11:58 -0400 Received: from mail.kernel.org ([198.145.29.99]:44148 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727703AbfHNCL6 (ORCPT ); Tue, 13 Aug 2019 22:11:58 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2092420843; Wed, 14 Aug 2019 02:11:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565748718; bh=zcslmXbDP2/EosiPFy6ZMtnFs4fJr2gbROyEuLHFzO0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Uss+oxM/u2+X2i4+E5OIsaIodUnvgyN+qf8OTGbfLzmq+pZ4hdGb7wopWvSwgLwco CffXjvAicp4+l3MTDIcJwd5jJaSvAjHB6AeT7d/JPiyoWdqmmQft72e0qZw0+ohSaV XCVE9oyCN2RBUFALpTUsJ6IABXVxzHtCgrbKRttQ= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Eric Dumazet , Stanislav Fomichev , Alexei Starovoitov , Sasha Levin , linux-kselftest@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org Subject: [PATCH AUTOSEL 5.2 035/123] selftests/bpf: add another gso_segs access Date: Tue, 13 Aug 2019 22:09:19 -0400 Message-Id: <20190814021047.14828-35-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190814021047.14828-1-sashal@kernel.org> References: <20190814021047.14828-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Eric Dumazet [ Upstream commit be69483bf4f3abaaca5d5ba460dbb50239463552 ] Use BPF_REG_1 for source and destination of gso_segs read, to exercise "bpf: fix access to skb_shared_info->gso_segs" fix. Signed-off-by: Eric Dumazet Suggested-by: Stanislav Fomichev Signed-off-by: Alexei Starovoitov Signed-off-by: Sasha Levin --- tools/testing/selftests/bpf/verifier/ctx_skb.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/tools/testing/selftests/bpf/verifier/ctx_skb.c b/tools/testing/selftests/bpf/verifier/ctx_skb.c index b0fda2877119c..d438193804b21 100644 --- a/tools/testing/selftests/bpf/verifier/ctx_skb.c +++ b/tools/testing/selftests/bpf/verifier/ctx_skb.c @@ -974,6 +974,17 @@ .result = ACCEPT, .prog_type = BPF_PROG_TYPE_CGROUP_SKB, }, +{ + "read gso_segs from CGROUP_SKB", + .insns = { + BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, + offsetof(struct __sk_buff, gso_segs)), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .prog_type = BPF_PROG_TYPE_CGROUP_SKB, +}, { "write gso_segs from CGROUP_SKB", .insns = { -- 2.20.1