From patchwork Sat Feb 3 12:25:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13544217 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 05B9D7C094; Sat, 3 Feb 2024 12:33:03 +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=1706963584; cv=none; b=kllUY4sORyQS7GTYbVhn/GV6kFBjnkAoAld/gRnnryvy6kRaJxlMFtUG430pWszrGDH+ybhbZyeMXNsf5LUVjCDsyAgnQBAeoI9NpiiG0gnyFiomYDdoNpcwJSpzM469mHqIhUrdjx9T3/5pr7IxLn5r17IkSQ0kBiHa2pPMKAk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706963584; c=relaxed/simple; bh=JCh6BoCIOxePO8zZIr/FO/CERnc7ZRYHEz9dpM/Qpg4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=vAnnEMyda31T70R5pSi5dHyVkYgiEpQyPXiQ+5fkfgWNBPm4x01CL5DGNXMpwz0G6jQl/Px8c1Mv7BU/wzBxUFshyHGnXeb+Pq5IkWczy2PaPdOS+/Axxg7XuiSLqnkU5sLfBu+xG1eEFwOtYYudkaYuAcV7qdjxs1GIE2dJ2t8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=kqkNRTd3; 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="kqkNRTd3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4CF52C43390; Sat, 3 Feb 2024 12:32:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706963583; bh=JCh6BoCIOxePO8zZIr/FO/CERnc7ZRYHEz9dpM/Qpg4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=kqkNRTd3I3lO3QHFD5UjLkvOmXQImqFY3hWHEUllrYLLdpP6+BXaYy4YzYJpIQfiI 2kHLBae1c3Xq/sQpeqs2cTCFeqKAzm2GWG98antWcjX06gw7CwAcB8sGoWImSmbV/w wyflXPYe7lInBio/hiz7dnB6MaDG5vFzEnie76b+PFqOpjJwi04lDvhCirR0sYEstt Osi7TWKazNTZlnXlSoBwbArXQxLqLF+EcZfBxzWRLpsvG2QYf3yRTP1bdczvlPmBcF FWwLyJCk+HVbPq+4OqXrI/U2oQFk8+dEj1kiPmSnxfaxgaNatAxo25FP09LCxaN/sf Dd2IR+IMxzJ5g== From: Mark Brown Date: Sat, 03 Feb 2024 12:25:56 +0000 Subject: [PATCH v8 30/38] 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: <20240203-arm64-gcs-v8-30-c9fec77673ef@kernel.org> References: <20240203-arm64-gcs-v8-0-c9fec77673ef@kernel.org> In-Reply-To: <20240203-arm64-gcs-v8-0-c9fec77673ef@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 , Kees Cook , Shuah Khan , "Rick P. Edgecombe" , Deepak Gupta , Ard Biesheuvel , Szabolcs Nagy Cc: "H.J. Lu" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Florian Weimer , Christian Brauner , Thiago Jung Bauermann , 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 0.13-dev-a684c X-Developer-Signature: v=1; a=openpgp-sha256; l=2627; i=broonie@kernel.org; h=from:subject:message-id; bh=JCh6BoCIOxePO8zZIr/FO/CERnc7ZRYHEz9dpM/Qpg4=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBlvjDo38gIcK9LJf7YTIjfUSjpLDV2o1lpaAkCiIJC kt2+aTiJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZb4w6AAKCRAk1otyXVSH0ALzB/ 4mRIohJMqHEtEnxH9wC0dGcy1NF3GJGVuohQBQ1SeayArCc3f3SjqKV52kokunFJEEUuSE49WPF9fJ i1lvqhrAg971iuSllKwjK15OdqSMq8uAVlbyXSeh1UpRu978IpinABVAJmFzVeBhsxRlAdH9j88WBx kAF5vqmLYu3dBH1x0Lf2hMVMye0R21jtWPC2adssJAG5oI2lzq7kPZH0P2HbAvcBqegDeN0fHuVdA2 55NxduDCGp22NvYO4Jj4QstU5qHqGmFAw/t1E7RoLgStYY9aKRX0ItbjaUV03z2h4aOqP+0Wy4Puax E6I7vX3cLSpZLvELwVpM5UmmmNf1rV 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. 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; /*