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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_NONE, URIBL_BLOCKED,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 63670C47083 for ; Mon, 31 May 2021 18:26:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 48E4461090 for ; Mon, 31 May 2021 18:26:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232043AbhEaS1z (ORCPT ); Mon, 31 May 2021 14:27:55 -0400 Received: from smtp-fw-80007.amazon.com ([99.78.197.218]:65526 "EHLO smtp-fw-80007.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232116AbhEaS1k (ORCPT ); Mon, 31 May 2021 14:27:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1622485560; x=1654021560; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=GsmhFNa2nLqeN9+231ZLCZpuqp3bb65LqW6+ArtWKQc=; b=eoQijMFRoKI9ji7V0uurBH8fIBtOT08q/yXH6FS9iZyJcZP0BncMgsZn B7Yl1KezYHsCAnNZurEcMz/qgbRTbPZYeC1GR4tXNQfBz52goFteJzVMk VFwUmsfkSS5UCxQXTyxOFIj7SxiUwRHuj4IhqP0NdYcsrhA6Gk+g4F8y3 g=; X-IronPort-AV: E=Sophos;i="5.83,238,1616457600"; d="scan'208";a="4116908" Received: from pdx4-co-svc-p1-lb2-vlan3.amazon.com (HELO email-inbound-relay-1a-807d4a99.us-east-1.amazon.com) ([10.25.36.214]) by smtp-border-fw-80007.pdx80.corp.amazon.com with ESMTP; 31 May 2021 18:25:59 +0000 Received: from EX13MTAUEB001.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan3.iad.amazon.com [10.40.159.166]) by email-inbound-relay-1a-807d4a99.us-east-1.amazon.com (Postfix) with ESMTPS id 8BB57A1D52; Mon, 31 May 2021 18:25:58 +0000 (UTC) Received: from EX13D05UEB002.ant.amazon.com (10.43.60.76) by EX13MTAUEB001.ant.amazon.com (10.43.60.129) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Mon, 31 May 2021 18:25:58 +0000 Received: from EX13MTAUEB002.ant.amazon.com (10.43.60.12) by EX13D05UEB002.ant.amazon.com (10.43.60.76) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Mon, 31 May 2021 18:25:58 +0000 Received: from dev-dsk-fllinden-2c-d7720709.us-west-2.amazon.com (172.19.206.175) by mail-relay.amazon.com (10.43.60.234) with Microsoft SMTP Server id 15.0.1497.18 via Frontend Transport; Mon, 31 May 2021 18:25:57 +0000 Received: by dev-dsk-fllinden-2c-d7720709.us-west-2.amazon.com (Postfix, from userid 6262777) id 8BD62FA1; Mon, 31 May 2021 18:25:57 +0000 (UTC) From: Frank van der Linden To: CC: , Subject: [PATCH v2 4.14 12/17] selftests/bpf: fix test_align Date: Mon, 31 May 2021 18:25:51 +0000 Message-ID: <20210531182556.25277-13-fllinden@amazon.com> X-Mailer: git-send-email 2.23.4 In-Reply-To: <20210531182556.25277-1-fllinden@amazon.com> References: <20210531182556.25277-1-fllinden@amazon.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org From: Alexei Starovoitov commit 2b36047e7889b7efee22c11e17f035f721855731 upstream. since commit 82abbf8d2fc4 the verifier rejects the bit-wise arithmetic on pointers earlier. The test 'dubious pointer arithmetic' now has less output to match on. Adjust it. Fixes: 82abbf8d2fc4 ("bpf: do not allow root to mangle valid pointers") Reported-by: kernel test robot Signed-off-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann --- tools/testing/selftests/bpf/test_align.c | 22 +--------------------- 1 file changed, 1 insertion(+), 21 deletions(-) diff --git a/tools/testing/selftests/bpf/test_align.c b/tools/testing/selftests/bpf/test_align.c index 8591c89c0828..471bbbdb94db 100644 --- a/tools/testing/selftests/bpf/test_align.c +++ b/tools/testing/selftests/bpf/test_align.c @@ -474,27 +474,7 @@ static struct bpf_align_test tests[] = { .result = REJECT, .matches = { {4, "R5=pkt(id=0,off=0,r=0,imm=0)"}, - /* ptr & 0x40 == either 0 or 0x40 */ - {5, "R5=inv(id=0,umax_value=64,var_off=(0x0; 0x40))"}, - /* ptr << 2 == unknown, (4n) */ - {7, "R5=inv(id=0,smax_value=9223372036854775804,umax_value=18446744073709551612,var_off=(0x0; 0xfffffffffffffffc))"}, - /* (4n) + 14 == (4n+2). We blow our bounds, because - * the add could overflow. - */ - {8, "R5=inv(id=0,var_off=(0x2; 0xfffffffffffffffc))"}, - /* Checked s>=0 */ - {10, "R5=inv(id=0,umin_value=2,umax_value=9223372036854775806,var_off=(0x2; 0x7ffffffffffffffc))"}, - /* packet pointer + nonnegative (4n+2) */ - {12, "R6=pkt(id=1,off=0,r=0,umin_value=2,umax_value=9223372036854775806,var_off=(0x2; 0x7ffffffffffffffc))"}, - {14, "R4=pkt(id=1,off=4,r=0,umin_value=2,umax_value=9223372036854775806,var_off=(0x2; 0x7ffffffffffffffc))"}, - /* NET_IP_ALIGN + (4n+2) == (4n), alignment is fine. - * We checked the bounds, but it might have been able - * to overflow if the packet pointer started in the - * upper half of the address space. - * So we did not get a 'range' on R6, and the access - * attempt will fail. - */ - {16, "R6=pkt(id=1,off=0,r=0,umin_value=2,umax_value=9223372036854775806,var_off=(0x2; 0x7ffffffffffffffc))"}, + /* R5 bitwise operator &= on pointer prohibited */ } }, { -- 2.23.4