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 DEE9E381D1 for ; Wed, 20 Mar 2024 22:56:12 +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=1710975373; cv=none; b=ira8d9Gt6X/Jy8cBhLzN5ah8WH99dy5uKtETybu4gM9yjAe3jJcvAH8PWYEBB9ngAokEX9m6ld6Q12YN33OdiPgCRO8vAUIW0iR7ctZWsIswLCU2ytY9EaQ86+qePy69GV7C67gL3F4qgJSTQqen4g6dLTJSVtseh9SGVjjzWDc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710975373; c=relaxed/simple; bh=C+CvtK17FfxC0nq7eSJe541rrVxeh9uv/ilR1G8UFKM=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=ubbfTqRpssNFzEKl911oPdACPF2PlV0v9J+zGrX1U4brbJAys5GOUEUT2KTeRbvFkwmOvbYX17d30R9frYcWeRl1Ew560x6TuorC7d/3nurm4onmpIt8oX8gAMBmnndbW4M4n0ClCE493rdt7RenbEiGHEcHtzoru2VGUwuD6Bw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cK7ZhaBO; 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="cK7ZhaBO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4696CC433F1; Wed, 20 Mar 2024 22:56:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710975372; bh=C+CvtK17FfxC0nq7eSJe541rrVxeh9uv/ilR1G8UFKM=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=cK7ZhaBOLFkV8FD35Kj6+SyMCkdbqiPscgVHH8fe82UpwYPPsX1W+i+2a84uSBiDc ksmS6Bqs+lDQpSo11FgTSXpZYWRbCIY2q4dLx9pqAZJnAchxRpdbvFO3geYSZuPlHi LJHVV+7NAe1QHgx/3zSPXMoVvfsvm34+UWDTAQ4YhI+mRSmL+EX+InHQ/i7xFEFG1U inR049YIezmCuyhtAKR/TTH+FAwJ/LZ5yZdgcVNMKyaPiXfi3kDEqG77c+8lBzNRw3 XKHBmZyeL5tuUl2qQThMQfweZkrz5Wz4a7BxOVnzcnMx7z4Cd2DHbV8ELRrWRB6xVn ryh2ASaJCSglw== Date: Thu, 21 Mar 2024 07:56:09 +0900 From: Masami Hiramatsu (Google) To: Steven Rostedt Cc: Dan Carpenter , linux-trace-kernel@vger.kernel.org Subject: Re: [PATCH] tracing: probes: Fix to zero initialize a local variable Message-Id: <20240321075609.dbc98f47f99aa499c49b46bd@kernel.org> In-Reply-To: <20240320092749.58997fea@gandalf.local.home> References: <171092223833.237219.17304490075697026697.stgit@devnote2> <20240320092749.58997fea@gandalf.local.home> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Wed, 20 Mar 2024 09:27:49 -0400 Steven Rostedt wrote: > On Wed, 20 Mar 2024 17:10:38 +0900 > "Masami Hiramatsu (Google)" wrote: > > > From: Masami Hiramatsu (Google) > > > > Fix to initialize 'val' local variable with zero. > > Dan reported that Smatch static code checker reports an error that a local > > 'val' variable needs to be initialized. Actually, the 'val' is expected to > > be initialized by FETCH_OP_ARG in the same loop, but it is not obvious. So > > initialize it with zero. > > BTW, that loop should really have a comment stating that FETCH_OP_ARG is > expected to happen before FETCH_OP_ST_EDATA. Indeed, OK, let me add it. Thank you, > > -- Steve -- Masami Hiramatsu (Google)