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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 A4CD2C3A5A3 for ; Tue, 27 Aug 2019 08:00:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6E94221883 for ; Tue, 27 Aug 2019 08:00:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566892834; bh=/1ggGKG6R9qFZgUoKcGccH4o7kaImZSKokgM6jrCZHE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=0CcAezzzkg4uXWSAZpCE8WRdyd5yUF8iqFLSlMEhYoHMCjeFAtRRQGV2pPFhZ9ZtD Qir1O0CWFHhGKzzlGcGVVxtYQfnGIUepNpUv2GjsYVdCv3v59yAz+Rudsz8D2QBHaR m5MnOzkznSO4lWG8O6DyyGwVWlKrl9PHunl+6vfQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728878AbfH0IAd (ORCPT ); Tue, 27 Aug 2019 04:00:33 -0400 Received: from mail.kernel.org ([198.145.29.99]:55570 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731510AbfH0IAc (ORCPT ); Tue, 27 Aug 2019 04:00:32 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 851452186A; Tue, 27 Aug 2019 08:00:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566892832; bh=/1ggGKG6R9qFZgUoKcGccH4o7kaImZSKokgM6jrCZHE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DR04/dyc128F273VOt/hmIDUcMgEOMOnPEnuJD18/Oyhjqz7QgpRezBzuccaU1dbA xraObcOQlMZ3SBUftWuvxgehZeLkj/qn9s5el9j3GqXEPpT3ys7QgYxHcKdD7TUsNp ewZmyRxQHukbRw7waQXujnAx2lVBL06W35+jrvNc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Eric Dumazet , Stanislav Fomichev , Alexei Starovoitov , Sasha Levin Subject: [PATCH 5.2 030/162] selftests/bpf: add another gso_segs access Date: Tue, 27 Aug 2019 09:49:18 +0200 Message-Id: <20190827072739.343508012@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190827072738.093683223@linuxfoundation.org> References: <20190827072738.093683223@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ 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