From patchwork Thu Aug 1 12:06:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13750441 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 581971A38EC; Thu, 1 Aug 2024 13:01:04 +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=1722517264; cv=none; b=Bobklhu+Km61tRzO1jTIhNHB5/Qdo65gge9a9rOHrjXtJ+T50uiQW1xkjw5QlcIleVrI6nYpDH7yV550xo9gSVdDO5zQYVCpLT9UhaMURZuZE/qFOFn3Z4EJub9gGERBi7rh/R6EW8Vgfnj3Qw2tdJRRQXOl06IvHy+sl9Ypzsg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722517264; c=relaxed/simple; bh=+guAOBhRmIfgEVfzNIbxa5iAcbQBA9Aonxf7B+eDgYE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=SQWRuWlpl/RF1SB6k1TwuHSmwP53vaE88z8mbQ9sfJYJ97qXL/v3sT3lQ2Nc2uZVtqhjvV0xXO4fzHCJN1nPOSfEnM5r++LMIdGQK6jEv5OinQXwtykpKWPy4eXecpWdWYZnuTvOrnoaeaLH/B4pfZGYg9toQx6g6h2agmirWag= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=chYxdKgK; 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="chYxdKgK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 91CD2C4AF0A; Thu, 1 Aug 2024 13:00:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722517264; bh=+guAOBhRmIfgEVfzNIbxa5iAcbQBA9Aonxf7B+eDgYE=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=chYxdKgKEN/P6WhtjSlCRHRkRW2Bij5hb+Y7VAQJKyCvKoPomyYMt8eArd/MVWIK8 61GY9dsmfiCU5Jys/qtBCj6COundf1HHTWMcw143MpEsvQEW5kNgUxBEhy7QxfbBp1 l5nVQ1KwuENodPcsuuvbuCUzld7ZZ0nlWbrzovrigtEAjwpSaB1Le0b6wP1F7Bl2aw hSuxIPdajC4F0ApEoZI98nrjUc94Q5ofvfoAg+78wxlkVvsJ4DU/7ibQoPGPURV7sn yAzCuvwyZFbXTbWSoScHdaLvR4B1W51AYxojkTbz41SdPUFXkfsDk+kMlXfOIRnphm hpY62eQpLtzuA== From: Mark Brown Date: Thu, 01 Aug 2024 13:06:59 +0100 Subject: [PATCH v10 32/40] 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: <20240801-arm64-gcs-v10-32-699e2bd2190b@kernel.org> References: <20240801-arm64-gcs-v10-0-699e2bd2190b@kernel.org> In-Reply-To: <20240801-arm64-gcs-v10-0-699e2bd2190b@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 , 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/pANAwAKASTWi3JdVIfQAcsmYgBmq4YeUXoUQw/9I7ybFQmVQ8h2lcPYkdDrKBsETSxM MBjWXMSJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZquGHgAKCRAk1otyXVSH0KVCB/ 4gRjlP4/lp0JabZj5jZ4yViyk5smTqzwWsY4ENeCSjsgUO8f9bx1pGhzfjIQTxvGmkdsS5tQ7QhxIN fIPGi7IZXlzFmZa9T8S9M9tMgZrfDWs/9RohnqVFwJZ8HosQgIvEx041S4+1/z52tEYmC7GHKvM/Cx c9iY8K4DddJGJMT0l7dlRvXBwOLTXRf2E1rRcUa/yZsOFS1rCP05axTuU6MaC5yvT96WZL58hYdvn8 RdBPuIl7oV8XA40gGkZAshXYW5ICmSFqcw+SwiPHGqGSScN5TFR8tt/1J+hpoTLzX5V/O8H2gCzK2p 1qmfLZxLZVb6xcXZEc/UB9a4Qfow3n 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; /*