From patchwork Tue Apr 8 18:49:45 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 879488 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 E8489230BF9; Tue, 8 Apr 2025 18:50:57 +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=1744138258; cv=none; b=bcqV8VQIX8WSzCzN8zcIFKnuZyLZxqJ6GPuvv2Qq9TA5cwEO98eISgx0QWHcpECc5HZqg1MW0GJ8vpQLLSTak/6LG5oGmt0G0RwA/5X3vPHdVu5tNkg9MHxZKlZNxc+m9WMXsDO4k1+zWkjAy7mf+2kbsZ+KQIymi1wVucgh2cY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744138258; c=relaxed/simple; bh=/AYgqTLwHHsTkCX7TTH1Na+bth+vthYvgf8svHl0eTc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Iclx7Xd50VQOonM/wMPto6RWk74HFZWSGPkOXFDDdeZ+3DDzOqToFB2lW7egQ4vc5AsE5ucC/MSRD9r02G9Zq0Nh8QdmPvFm2PV/JjzwI4WxBH3kUrovsINJ6mPDhssVT0Jr22sI6SeNPIf8CjMbAaFZb97Z4y9XYT93PBDpzig= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=s15mol1u; 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="s15mol1u" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AA7DAC4CEEA; Tue, 8 Apr 2025 18:50:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744138257; bh=/AYgqTLwHHsTkCX7TTH1Na+bth+vthYvgf8svHl0eTc=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=s15mol1uA7Z25zXM/8ODeDCI13jtMbNRECDqmJyNXlm0ycRByCdwckfRL3/63Ofrb oEJjTJUeQM+Z7v9X0ey5HIozf59f0zqOFhHtBB+MQkvkylsS/Gn0y3aJVDDUqEa1CC PGNPqv7VXHel4Wjdf4FfCTpaj1bI3mTX3wPD+qa5+svTEg0WsNUvFbZQBBvDk4XSyX 4s2qybllDEbn22LZdtNoyfEkS53s9rgjio3PG8TCT1Bns8cf7iJDZVCv+E7uOOuDWV EWSWKIcM6gwYmI0efdhoPx34g7CXi+UA5nHxizR2wrATpQJ+7jejDqJ9LTwHh/TZws o9QI8stLfncGw== From: Mark Brown Date: Tue, 08 Apr 2025 19:49:45 +0100 Subject: [PATCH RFT v15 5/8] selftests/clone3: Remove redundant flushes of output streams Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250408-clone3-shadow-stack-v15-5-3fa245c6e3be@kernel.org> References: <20250408-clone3-shadow-stack-v15-0-3fa245c6e3be@kernel.org> In-Reply-To: <20250408-clone3-shadow-stack-v15-0-3fa245c6e3be@kernel.org> To: "Rick P. Edgecombe" , Deepak Gupta , Szabolcs Nagy , "H.J. Lu" , Florian Weimer , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , Christian Brauner , Shuah Khan Cc: linux-kernel@vger.kernel.org, Catalin Marinas , Will Deacon , jannh@google.com, bsegall@google.com, Yury Khrustalev , Wilco Dijkstra , linux-kselftest@vger.kernel.org, linux-api@vger.kernel.org, Mark Brown , Kees Cook , Kees Cook , Shuah Khan X-Mailer: b4 0.15-dev-c25d1 X-Developer-Signature: v=1; a=openpgp-sha256; l=1114; i=broonie@kernel.org; h=from:subject:message-id; bh=/AYgqTLwHHsTkCX7TTH1Na+bth+vthYvgf8svHl0eTc=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBn9W/qsXFcBmtSU2fNjqhpFuycLbaqHNAvW1e/ZFtL YsmbfIGJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZ/Vv6gAKCRAk1otyXVSH0NE1B/ 9tlQB01aHygXB73eQ3RbIBxf74OCyit3DJw7CGC215xTJSlbRlFbG5hYR2CcQchUQoq5L8ObDN+LmY dJ7uBnlqstpslYhN6gUbs24WQrpDYjDm1IRqPenlPLWt1+WaSenGwbHDHB1vNW8bz31cmw+WiPaoIh +C5CXEBIgrHf3o6dTpdyP8aB4+E+vrE8dtwWZuV4JQgy3LXBDETtfPCL2lLx1CFPWkZF86GjnjaEf0 KaObT0c270s2pqyt8dnrAFs9ybHYg5HNdXkWTWYyCejn+ouvsrAAK3FY3shWSmnmY02vbWG4BZWfBa 34rQoJ9zBYts605lxt4Ym4Yh2jPd+G X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB Since there were widespread issues with output not being flushed the kselftest framework was modified to explicitly set the output streams unbuffered in commit 58e2847ad2e6 ("selftests: line buffer test program's stdout") so there is no need to explicitly flush in the clone3 tests. Reviewed-by: Kees Cook Tested-by: Kees Cook Acked-by: Shuah Khan Reviewed-by: Catalin Marinas Signed-off-by: Mark Brown --- tools/testing/selftests/clone3/clone3_selftests.h | 2 -- 1 file changed, 2 deletions(-) diff --git a/tools/testing/selftests/clone3/clone3_selftests.h b/tools/testing/selftests/clone3/clone3_selftests.h index eeca8005723f..939b26c86d42 100644 --- a/tools/testing/selftests/clone3/clone3_selftests.h +++ b/tools/testing/selftests/clone3/clone3_selftests.h @@ -35,8 +35,6 @@ struct __clone_args { static pid_t sys_clone3(struct __clone_args *args, size_t size) { - fflush(stdout); - fflush(stderr); return syscall(__NR_clone3, args, size); }