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=-12.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 D83DFC433E2 for ; Sat, 12 Sep 2020 11:28:52 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 49706208FE for ; Sat, 12 Sep 2020 11:28:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="AHH/amkQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 49706208FE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4BpVkV3Q7RzDrHG for ; Sat, 12 Sep 2020 21:28:50 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=chromium.org (client-ip=2607:f8b0:4864:20::541; helo=mail-pg1-x541.google.com; envelope-from=keescook@chromium.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.a=rsa-sha256 header.s=google header.b=AHH/amkQ; dkim-atps=neutral Received: from mail-pg1-x541.google.com (mail-pg1-x541.google.com [IPv6:2607:f8b0:4864:20::541]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4BpVH70yBWzDqmY for ; Sat, 12 Sep 2020 21:08:35 +1000 (AEST) Received: by mail-pg1-x541.google.com with SMTP id v15so8207714pgh.6 for ; Sat, 12 Sep 2020 04:08:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=pONZKNsoYmecan6Kvfo6IohiIkOTvwMfLoaC7wDxjJY=; b=AHH/amkQdeWLyBAxU3pffopTPxgFrBFBprJ+PpEdvWf1lAYD5H+lgruCFy2n/X0+XX yY7j6ILtJvVkoXTgPU/Q0Nx0Ff/quYRXHPXNvwJmR6j+U5zNUucDghfcm6CBWGBetvGy 4eTIchjU58tkxxv/jWjM7df5Qqcmyycxt1Xts= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=pONZKNsoYmecan6Kvfo6IohiIkOTvwMfLoaC7wDxjJY=; b=Q0Rw+6cAm5PEcogPvtlvF/k6uLi3ezwVdevnWn8ApAOigeOVJWdvwMc9zHFhJ+rKTa MfODH3smf0itpz2CUxJ5rK39VVy8JPTeFK3E+jad2DWaADEuOYce4aSLdYbU5ugyip8y vVjSewYuq7NL/9mfz1ZYmLxboq/CXvWZiHu4WYXB/jxuR6HQew58uz5rs/Ip8r1B2q0M 92JQrYHe96dVIev05VQqeEpphOTfL+G0T72U5pAKTWOmuoQmH96BbHNtczSE2qwoyRVJ ywoP8/bi320WEKK0PCsLf44ESeuRobnAEVzfTEtbBNsef6WI45NMV8j/Bdnl28X0tSi8 +qrw== X-Gm-Message-State: AOAM533U2kTaSxZS9+i8OYV0zZIgpSOnwJQwb0rrFRpjO+1f+xBKv3CD ZDAbbSMiBZvN1T7v5ZezdVx9Yw== X-Google-Smtp-Source: ABdhPJxh5feYLWNyYkQfm0AMemI2YVevpROI7r4tOHO1a8H0MHk0I/H+X87vqakNf9zn1pnikeC7qw== X-Received: by 2002:a05:6a00:8c5:b029:13e:ce2c:88bd with SMTP id s5-20020a056a0008c5b029013ece2c88bdmr5950676pfu.0.1599908913398; Sat, 12 Sep 2020 04:08:33 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id np1sm4004435pjb.2.2020.09.12.04.08.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 12 Sep 2020 04:08:27 -0700 (PDT) From: Kees Cook To: linux-kernel@vger.kernel.org Subject: [PATCH 12/15] selftests/seccomp: powerpc: Fix seccomp return value testing Date: Sat, 12 Sep 2020 04:08:17 -0700 Message-Id: <20200912110820.597135-13-keescook@chromium.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200912110820.597135-1-keescook@chromium.org> References: <20200912110820.597135-1-keescook@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thadeu Lima de Souza Cascardo , Will Drewry , Kees Cook , linux-xtensa@linux-xtensa.org, linux-mips@vger.kernel.org, Andy Lutomirski , Max Filippov , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Christian Brauner Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On powerpc, the errno is not inverted, and depends on ccr.so being set. Add this to a powerpc definition of SYSCALL_RET_SET(). Co-developed-by: Thadeu Lima de Souza Cascardo Signed-off-by: Thadeu Lima de Souza Cascardo Link: https://lore.kernel.org/linux-kselftest/20200911181012.171027-1-cascardo@canonical.com/ Fixes: 5d83c2b37d43 ("selftests/seccomp: Add powerpc support") Signed-off-by: Kees Cook --- tools/testing/selftests/seccomp/seccomp_bpf.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c index 623953a53032..bbab2420d708 100644 --- a/tools/testing/selftests/seccomp/seccomp_bpf.c +++ b/tools/testing/selftests/seccomp/seccomp_bpf.c @@ -1750,6 +1750,21 @@ TEST_F(TRACE_poke, getpid_runs_normally) # define ARCH_REGS struct pt_regs # define SYSCALL_NUM(_regs) (_regs).gpr[0] # define SYSCALL_RET(_regs) (_regs).gpr[3] +# define SYSCALL_RET_SET(_regs, _val) \ + do { \ + typeof(_val) _result = (_val); \ + /* \ + * A syscall error is signaled by CR0 SO bit \ + * and the code is stored as a positive value. \ + */ \ + if (_result < 0) { \ + SYSCALL_RET(_regs) = -result; \ + (_regs).ccr |= 0x10000000; \ + } else { \ + SYSCALL_RET(_regs) = result; \ + (_regs).ccr &= ~0x10000000; \ + } \ + } while (0) #elif defined(__s390__) # define ARCH_REGS s390_regs # define SYSCALL_NUM(_regs) (_regs).gprs[2] -- 2.25.1