linux-kernel - Re: [PATCH ghak80 V1] audit: add syscall information to FEATURE

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Date:   Tue, 17 Apr 2018 18:10:30 -0400
From:   Steve Grubb <sgrubb@...hat.com>
To:     Paul Moore <paul@...l-moore.com>
Cc:     Richard Guy Briggs <rgb@...hat.com>,
        Linux-Audit Mailing List <linux-audit@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Eric Paris <eparis@...hat.com>
Subject: Re: [PATCH ghak80 V1] audit: add syscall information to FEATURE_CHANGE records

On Tuesday, April 17, 2018 6:06:24 PM EDT Paul Moore wrote:
> On Wed, Apr 11, 2018 at 8:46 AM, Richard Guy Briggs <rgb@...hat.com> wrote:
> > Tie syscall information to FEATURE_CHANGE calls since it is a result of
> > user action.
> > 
> > See: https://github.com/linux-audit/audit-kernel/issues/80
> > 
> > Signed-off-by: Richard Guy Briggs <rgb@...hat.com>
> > ---
> > 
> >  kernel/audit.c | 5 ++---
> >  1 file changed, 2 insertions(+), 3 deletions(-)
> > 
> > diff --git a/kernel/audit.c b/kernel/audit.c
> > index 8da24ef..23f125b 100644
> > --- a/kernel/audit.c
> > +++ b/kernel/audit.c
> > @@ -1103,10 +1103,9 @@ static void audit_log_feature_change(int which,
> > u32 old_feature, u32 new_feature> 
> >  {
> >  
> >         struct audit_buffer *ab;
> > 
> > -       if (audit_enabled == AUDIT_OFF)
> > +       if (!audit_enabled)
> 
> Sooo, this is an unrelated style change, why?  Looking at the rest of
> kernel/audit.c we seem to use a mix of "(!x)" and "(x == 0/CONST)" so
> why are you adding noise to this patch?
> 
> >                 return;
> > 
> > -
> > -       ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_FEATURE_CHANGE);
> > +       ab = audit_log_start(current->audit_context, GFP_KERNEL,
> > AUDIT_FEATURE_CHANGE);
> This is the important part, and the Right Thing To Do.

This is an unexpected change. I have asked questions on the github issue 
tracker but have not gotten a satisfactory answer. Please do not merge this 
until there's agreement on this.

Thanks,
-Steve

> >         if (!ab)
> >         
> >                 return;
> >         
> >         audit_log_task_info(ab, current);
> > 
> > --
> > 1.8.3.1