From mboxrd@z Thu Jan 1 00:00:00 1970 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 0BE6C1C5783; Tue, 27 Aug 2024 14:55:36 +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=1724770536; cv=none; b=fdKn5iksKC1GYzNopWYAmBiRmtqSSIOt33pTK9xhlEHCX/FOF4bQzFUMJJynYpItyaDB3S5xinjMb9DHw9s+ro/B85BobRj4YU2dIh0yB6dJSTZ4FlAFaNYShCrlclaQyfaaWvzMJ7S/EmYr2BLUPj7ika+Nhg6FsYGKjLSwSGQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724770536; c=relaxed/simple; bh=1E34GTEh5bkvwkJOZETrfZ2QIQGsHFdr+TUAcbV0GkM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=P1tTSApUsD7Ix2IsZ3DWJrtL+s3GCWxvUsSFtO8k1a5C/ZaDCVteYCpgVaFjKUHUuQGHYgZLJeNhJI8a9pXEEY64T023S8wtHUTfDjkNtrenH5TgHpB/3hw/qFZJL9EaaQ/ehxtb0VcsHrmSN3/1yiN+mIJDOpWnn3QE6bb7CNk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=LLJfbY62; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="LLJfbY62" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 877EEC4E698; Tue, 27 Aug 2024 14:55:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1724770535; bh=1E34GTEh5bkvwkJOZETrfZ2QIQGsHFdr+TUAcbV0GkM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LLJfbY62jlHYmzpkQclMR/JinF+kd9dI3a0YRYuPnScW7kpOzA43FQfBPjWLoYiKc BbrpQvRcaieU0k0QnyrMIlCTt6V99eHPDyCUPvBjtm4E0Arz1/ialuL8y/IWFHnnYE BWvX+UCWz3y3OOnWubKwW2vD1rAbs3Ka7CplD8T8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Itaru Kitayama , Shuah Khan , Andrew Morton , Sasha Levin Subject: [PATCH 6.6 227/341] tools/testing/selftests/mm/run_vmtests.sh: lower the ptrace permissions Date: Tue, 27 Aug 2024 16:37:38 +0200 Message-ID: <20240827143852.050709895@linuxfoundation.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240827143843.399359062@linuxfoundation.org> References: <20240827143843.399359062@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Itaru Kitayama [ Upstream commit 2ffc27b15b11c9584ac46335c2ed2248d2aa4137 ] On Ubuntu and probably other distros, ptrace permissions are tightend a bit by default; i.e., /proc/sys/kernel/yama/ptrace_score is set to 1. This cases memfd_secret's ptrace attach test fails with a permission error. Set it to 0 piror to running the program. Link: https://lkml.kernel.org/r/20231030-selftest-v1-1-743df68bb996@linux.dev Signed-off-by: Itaru Kitayama Cc: Shuah Khan Signed-off-by: Andrew Morton Stable-dep-of: 7c5e8d212d7d ("selftests: memfd_secret: don't build memfd_secret test on unsupported arches") Signed-off-by: Sasha Levin --- tools/testing/selftests/mm/run_vmtests.sh | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh index 3e2bc818d566f..7d31718ce8343 100755 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -303,6 +303,7 @@ CATEGORY="hmm" run_test bash ./test_hmm.sh smoke # MADV_POPULATE_READ and MADV_POPULATE_WRITE tests CATEGORY="madv_populate" run_test ./madv_populate +echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope CATEGORY="memfd_secret" run_test ./memfd_secret # KSM KSM_MERGE_TIME_HUGE_PAGES test with size of 100 -- 2.43.0