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: 822011 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CD31D4C81; Thu, 22 Aug 2024 01:22:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724289741; cv=none; b=TxgCkV62sN+ZVJjYYgpx4192qNcwA0ItO6jaEu3iG61iTzAfwJEFMZ1JccUHCIA8QSJT9xVBrjUe1Z8BqScb5z9OASWbnm1fjTylfxcmuBVkdwHaJWst7ThTf/FfVeyPj81ytFQnsBOQCD8DFKyc2ywLQOmx5QAZvlO6jTHu1Ps= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724289741; c=relaxed/simple; bh=+guAOBhRmIfgEVfzNIbxa5iAcbQBA9Aonxf7B+eDgYE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=d3/vDXJE1KxL0jU4s0DH0yM9nYyoDSU6+5ilO0D0qSCi9DmwtT+R/JtNy8JfBl91dHDPXPDTKUea+zI5/lL3RTFCaYb8hhEoI/jesgLWePXRKgqjXAOSvgT8sDUey9ZKnAWAODd3FCE61+ShCEfEzK1Xzgd9Z1spgfScGWeG19E= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rprXxw3t; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="rprXxw3t" 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 Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 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; /*