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 6AA1239AF4 for ; Wed, 20 Mar 2024 13:25:25 +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=1710941125; cv=none; b=JvdMW8RU5TN1R7iEf2cVWU2Oxe+1n/xt5/CbCoCTwSwIu6mboyhxxWhU4ZzjBWu+u/xi2U3YPIQuLZLVgjikE2xY3atO4RKxZecrVHJExhreRqixBS8+aXQo4rjHWc8zZ2Z5YhKSEcTkFC0TypPYsp7KIedKhr2I/HNLX9Pou1g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710941125; c=relaxed/simple; bh=YxN8jJyUaSRiib14DJDP1DaCrMUjkGHwBnml+IUdXiw=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Dejm7YrPblMPpfy4WIaaUlMmH8Yj2Fkffj7CSkshbgfwlVPj835y14rJk2sV+IQiqdVDasHcVImHdJRI+9xwCqcYD1nmrjlp/ycrnxo35BKkZjgZhqLROkQbjI/HN6FOIxC1khoSxMjaI8bIvPg1laiURzjt57EQpNZAt86iKFs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7CE51C433C7; Wed, 20 Mar 2024 13:25:24 +0000 (UTC) Date: Wed, 20 Mar 2024 09:27:49 -0400 From: Steven Rostedt To: "Masami Hiramatsu (Google)" Cc: Dan Carpenter , linux-trace-kernel@vger.kernel.org Subject: Re: [PATCH] tracing: probes: Fix to zero initialize a local variable Message-ID: <20240320092749.58997fea@gandalf.local.home> In-Reply-To: <171092223833.237219.17304490075697026697.stgit@devnote2> References: <171092223833.237219.17304490075697026697.stgit@devnote2> X-Mailer: Claws Mail 3.19.1 (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 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. -- Steve