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From: Mark Brown <broonie@kernel.org>
To: "Rick P. Edgecombe" <rick.p.edgecombe@intel.com>,
	 Deepak Gupta <debug@rivosinc.com>,
	Szabolcs Nagy <Szabolcs.Nagy@arm.com>,
	 "H.J. Lu" <hjl.tools@gmail.com>,
	Florian Weimer <fweimer@redhat.com>,
	 Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,  Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	 x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
	 Peter Zijlstra <peterz@infradead.org>,
	Juri Lelli <juri.lelli@redhat.com>,
	 Vincent Guittot <vincent.guittot@linaro.org>,
	 Dietmar Eggemann <dietmar.eggemann@arm.com>,
	 Steven Rostedt <rostedt@goodmis.org>,
	Ben Segall <bsegall@google.com>,  Mel Gorman <mgorman@suse.de>,
	Valentin Schneider <vschneid@redhat.com>,
	 Christian Brauner <brauner@kernel.org>,
	Shuah Khan <shuah@kernel.org>
Cc: linux-kernel@vger.kernel.org,
	Catalin Marinas <catalin.marinas@arm.com>,
	 Will Deacon <will@kernel.org>,
	jannh@google.com, bsegall@google.com,
	 Andrew Morton <akpm@linux-foundation.org>,
	 Yury Khrustalev <yury.khrustalev@arm.com>,
	 Wilco Dijkstra <wilco.dijkstra@arm.com>,
	linux-kselftest@vger.kernel.org,  linux-api@vger.kernel.org,
	Mark Brown <broonie@kernel.org>,  Kees Cook <kees@kernel.org>,
	Kees Cook <kees@kernel.org>,
	 Shuah Khan <skhan@linuxfoundation.org>
Subject: [PATCH v19 5/8] selftests/clone3: Remove redundant flushes of output streams
Date: Tue, 19 Aug 2025 17:21:51 +0100	[thread overview]
Message-ID: <20250819-clone3-shadow-stack-v19-5-bc957075479b@kernel.org> (raw)
In-Reply-To: <20250819-clone3-shadow-stack-v19-0-bc957075479b@kernel.org>

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 <kees@kernel.org>
Tested-by: Kees Cook <kees@kernel.org>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 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);
 }
 

-- 
2.39.5


  parent reply	other threads:[~2025-08-19 16:27 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-19 16:21 [PATCH v19 0/8] fork: Support shadow stacks in clone3() Mark Brown
2025-08-19 16:21 ` [PATCH v19 1/8] arm64/gcs: Return a success value from gcs_alloc_thread_stack() Mark Brown
2025-08-19 16:21 ` [PATCH v19 2/8] Documentation: userspace-api: Add shadow stack API documentation Mark Brown
2025-08-20 23:15   ` Randy Dunlap
2025-08-19 16:21 ` [PATCH v19 3/8] selftests: Provide helper header for shadow stack testing Mark Brown
2025-08-19 16:21 ` [PATCH v19 4/8] fork: Add shadow stack support to clone3() Mark Brown
2025-08-27 17:58   ` Edgecombe, Rick P
2025-08-19 16:21 ` Mark Brown [this message]
2025-08-19 16:21 ` [PATCH v19 6/8] selftests/clone3: Factor more of main loop into test_clone3() Mark Brown
2025-08-19 16:21 ` [PATCH v19 7/8] selftests/clone3: Allow tests to flag if -E2BIG is a valid error code Mark Brown
2025-08-19 16:21 ` [PATCH v19 8/8] selftests/clone3: Test shadow stack support Mark Brown

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