From patchwork Thu Aug 22 01:15:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13772621 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 69D54C5321E for ; Thu, 22 Aug 2024 04:01:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=WWCcnUoJjrrALxAjBZhPpvknZTOgZ9IOR5Q3O7LGZXc=; b=qmj7+vN9/naye1oPwBH0UjOduS jG6lc3Jl113+NtwxIKmp1Wtpae0rou30SHKfDRARqjQE/6lDOUyFoZVU+Lo4/MI/qWG3pyj+f7aQ1 dSq2GamGY9fWNdXFEUAP8cDXTrRD1b3KwYpL/C+tbXEPN7xXIhKQWMdFq3MuDbRaQCpdm1nhun20i MNAR0a7XaupNx1JWGepnSuPPHPX4esygHOcVVjAoUqWm5S1LxkhaVzBnzCx+VAhsuAJq/NLF3ybD/ 5cQHz2fEC/NvPjCqnE30fZXKJMIQft4srMJrdBRtCOSigjeUyc3jJ+XPg6qeQj+FMVxYl5mnXQMDf 0cmbeZow==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sgz0N-0000000BIU1-0hOu; Thu, 22 Aug 2024 04:00:59 +0000 Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sgwWt-0000000AtZi-3Z5Q; Thu, 22 Aug 2024 01:22:25 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 2C068CE0B61; Thu, 22 Aug 2024 01:22:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 37C84C32782; Thu, 22 Aug 2024 01:22:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1724289741; bh=+guAOBhRmIfgEVfzNIbxa5iAcbQBA9Aonxf7B+eDgYE=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=rprXxw3tGb6cTdhcmvgUvEwH+oj+LbteQEFeW1VJf8lEZW+GU/MPSp8LJcs5kgTYF RPLeUqAMs4QCMwtrY8SluBuSQlQQJvoCAKJkvAD/EepsBOrRWLDh54RblTJlG00WLH bayGQ9jBYcOxJ12Xb+fllAqUe1xC9qdIlHZTEygTR0NDGYTwOnscxhaBE1OcIDWYVh Y3ZdakJlKA2m7VcYszqWBGZTutvb+ISaEC6MrX4Lm0RumlDrxIiRPcRYBwZIC84fLo He7okOG6+tKgVjflfdrLFGI00i55bjbmmV/WSayFKSrY9Kgc9h+lP8h0PrSn/B3qn5 KUfAkh1XkaPvw== From: Mark Brown Date: Thu, 22 Aug 2024 02:15:34 +0100 Subject: [PATCH v11 31/39] kselftest/arm64: Allow signals tests to specify an expected si_code MIME-Version: 1.0 Message-Id: <20240822-arm64-gcs-v11-31-41b81947ecb5@kernel.org> References: <20240822-arm64-gcs-v11-0-41b81947ecb5@kernel.org> In-Reply-To: <20240822-arm64-gcs-v11-0-41b81947ecb5@kernel.org> To: Catalin Marinas , Will Deacon , Jonathan Corbet , Andrew Morton , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Arnd Bergmann , Oleg Nesterov , Eric Biederman , Shuah Khan , "Rick P. Edgecombe" , Deepak Gupta , Ard Biesheuvel , Szabolcs Nagy , Kees Cook Cc: "H.J. Lu" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Florian Weimer , Christian Brauner , Thiago Jung Bauermann , Ross Burton , Yury Khrustalev , Wilco Dijkstra , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Mark Brown X-Mailer: b4 0.15-dev-37811 X-Developer-Signature: v=1; a=openpgp-sha256; l=2693; i=broonie@kernel.org; h=from:subject:message-id; bh=+guAOBhRmIfgEVfzNIbxa5iAcbQBA9Aonxf7B+eDgYE=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBmxpE8HE9xRyuT2o2hfCDAAvBuT2loh9TSNibeZFMC rWwE/vaJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZsaRPAAKCRAk1otyXVSH0FCgB/ 9nTPSN9iDTXOxFgNkjbqBttZbfVxqIhynik1FpokGzlSc5+uDkL7G7DDCkbGL6RM7Uj7ym0pkTyV0+ ngwLgpFoRLl5FWLg+a49DG602qg4pSCQ8CVRq5uyTvczb6ZkH5Nb/pt7GUdnPhenZhDCk48vNR1rF4 Tzi9dTXCwL2UIkj9FI63nmlyKN/3fuedxrosQHmyjM//vYDOcsT4qbCXu97ArC7K7V3HbnEeZnirv3 fdoeNeT1AZ1C+Q44IXJTZU2sh3mSIkC7N9eBFMipswUXrd1Gy4j8izMs1A13a/pzHLXsxAYzQishJu IrejKlsDorgdQHiBJuNYzwQPd30Z3W X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240821_182224_297878_A4CD9AA6 X-CRM114-Status: GOOD ( 18.88 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Currently we ignore si_code unless the expected signal is a SIGSEGV, in which case we enforce it being SEGV_ACCERR. Allow test cases to specify exactly which si_code should be generated so we can validate this, and test for other segfault codes. Reviewed-by: Thiago Jung Bauermann Signed-off-by: Mark Brown --- .../testing/selftests/arm64/signal/test_signals.h | 4 +++ .../selftests/arm64/signal/test_signals_utils.c | 29 ++++++++++++++-------- 2 files changed, 23 insertions(+), 10 deletions(-) diff --git a/tools/testing/selftests/arm64/signal/test_signals.h b/tools/testing/selftests/arm64/signal/test_signals.h index 7ada43688c02..ee75a2c25ce7 100644 --- a/tools/testing/selftests/arm64/signal/test_signals.h +++ b/tools/testing/selftests/arm64/signal/test_signals.h @@ -71,6 +71,10 @@ struct tdescr { * Zero when no signal is expected on success */ int sig_ok; + /* + * expected si_code for sig_ok, or 0 to not check + */ + int sig_ok_code; /* signum expected on unsupported CPU features. */ int sig_unsupp; /* a timeout in second for test completion */ diff --git a/tools/testing/selftests/arm64/signal/test_signals_utils.c b/tools/testing/selftests/arm64/signal/test_signals_utils.c index 89ef95c1af0e..63deca32b0df 100644 --- a/tools/testing/selftests/arm64/signal/test_signals_utils.c +++ b/tools/testing/selftests/arm64/signal/test_signals_utils.c @@ -143,16 +143,25 @@ static bool handle_signal_ok(struct tdescr *td, "current->token ZEROED...test is probably broken!\n"); abort(); } - /* - * Trying to narrow down the SEGV to the ones generated by Kernel itself - * via arm64_notify_segfault(). This is a best-effort check anyway, and - * the si_code check may need to change if this aspect of the kernel - * ABI changes. - */ - if (td->sig_ok == SIGSEGV && si->si_code != SEGV_ACCERR) { - fprintf(stdout, - "si_code != SEGV_ACCERR...test is probably broken!\n"); - abort(); + if (td->sig_ok_code) { + if (si->si_code != td->sig_ok_code) { + fprintf(stdout, "si_code is %d not %d\n", + si->si_code, td->sig_ok_code); + abort(); + } + } else { + /* + * Trying to narrow down the SEGV to the ones + * generated by Kernel itself via + * arm64_notify_segfault(). This is a best-effort + * check anyway, and the si_code check may need to + * change if this aspect of the kernel ABI changes. + */ + if (td->sig_ok == SIGSEGV && si->si_code != SEGV_ACCERR) { + fprintf(stdout, + "si_code != SEGV_ACCERR...test is probably broken!\n"); + abort(); + } } td->pass = 1; /*