linux-kernel - Re: [PATCH v2] KEYS: remove redundant memset

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Date:   Wed, 22 Jul 2020 13:20:00 -0700
From:   Joe Perches <joe@...ches.com>
To:     Tom Rix <trix@...hat.com>, dhowells@...hat.com,
        jarkko.sakkinen@...ux.intel.com, jmorris@...ei.org,
        serge@...lyn.com, denkenz@...il.com, marcel@...tmann.org
Cc:     keyrings@...r.kernel.org, linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] KEYS: remove redundant memset

On Wed, 2020-07-22 at 13:10 -0700, Tom Rix wrote:
> On 7/22/20 1:02 PM, Joe Perches wrote:
> > On Wed, 2020-07-22 at 06:46 -0700, trix@...hat.com wrote:
> > > From: Tom Rix <trix@...hat.com>
> > > 
> > > Reviewing use of memset in keyctrl_pkey.c
> > > 
> > > keyctl_pkey_params_get prologue code to set params up
> > > 
> > > 	memset(params, 0, sizeof(*params));
> > > 	params->encoding = "raw";
> > > 
> > > keyctl_pkey_query has the same prologue
> > > and calls keyctl_pkey_params_get.
> > > 
> > > So remove the prologue.
> > > 
> > > Fixes: 00d60fd3b932 ("KEYS: Provide keyctls to drive the new key type ops for asymmetric keys [ver #2]")
> > At best, this is a micro optimization.
> Yes
> > How is this appropriate for a Fixes: line?
> Removing unneeded code is not a fix?

IMO: there's no "bug" here.

It's not a logic defect causing some unintended outcome.
It doesn't need backporting to stable branches.

Documentation/process/submitting-patches.rst-If your patch fixes a bug in a specific commit, e.g. you found an issue using
Documentation/process/submitting-patches.rst:``git bisect``, please use the 'Fixes:' tag with the first 12 characters of
Documentation/process/submitting-patches.rst-the SHA-1 ID, and the one line summary.