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[49.186.89.135]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-acec0a66a57sm9097208a12.75.2025.02.04.17.05.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Feb 2025 17:05:22 -0800 (PST) Received: from dave by dread.disaster.area with local (Exim 4.98) (envelope-from ) id 1tfTqx-0000000Ejru-07WE; Wed, 05 Feb 2025 12:05:19 +1100 Date: Wed, 5 Feb 2025 12:05:19 +1100 From: Dave Chinner To: "Darrick J. Wong" Cc: zlang@redhat.com, fstests@vger.kernel.org, linux-xfs@vger.kernel.org Subject: Re: [PATCH 34/34] build: initialize stack variables to zero by default Message-ID: References: <173870406063.546134.14070590745847431026.stgit@frogsfrogsfrogs> <173870406625.546134.7067216243468836148.stgit@frogsfrogsfrogs> Precedence: bulk X-Mailing-List: fstests@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <173870406625.546134.7067216243468836148.stgit@frogsfrogsfrogs> On Tue, Feb 04, 2025 at 01:31:10PM -0800, Darrick J. Wong wrote: > From: Darrick J. Wong > > Newer versions of gcc and clang can include the ability to zero stack > variables by default. Let's enable it so that we (a) reduce the risk of > writing stack contents to disk somewhere and (b) try to reduce > unpredictable program behavior based on random stack contents. The > kernel added this 6 years ago, so I think it's mature enough for > fstests. > > Signed-off-by: "Darrick J. Wong" > --- > configure.ac | 1 + > include/builddefs.in | 3 ++- > m4/package_libcdev.m4 | 14 ++++++++++++++ > 3 files changed, 17 insertions(+), 1 deletion(-) Looks fine. Reviewed-by: Dave Chinner -- Dave Chinner david@fromorbit.com