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Message-ID: <alpine.DEB.2.21.1910242038540.2621@hadrien>
Date: Thu, 24 Oct 2019 20:39:21 +0200 (CEST)
From: Julia Lawall <julia.lawall@...6.fr>
To: Navid Emamdoost <navid.emamdoost@...il.com>
cc: John Johansen <john.johansen@...onical.com>,
Navid Emamdoost <emamd001@....edu>,
Stephen McCamant <smccaman@....edu>, Kangjie Lu <kjlu@....edu>,
James Morris <jmorris@...ei.org>,
"Serge E. Hallyn" <serge@...lyn.com>,
linux-security-module@...r.kernel.org,
LKML <linux-kernel@...r.kernel.org>,
Tyler Hicks <tyhicks@...onical.com>
Subject: Re: [PATCH] apparmor: fix odd_ptr_err.cocci warnings (fwd)
On Thu, 24 Oct 2019, Navid Emamdoost wrote:
> Hello,
>
> I added Tyler to this conversation.
> I believe v3 of the patch addresses this issue:
> https://lore.kernel.org/patchwork/patch/1142523/
It looks ok like that, thanks.
Please don't top post.
julia
>
>
> On Thu, Oct 24, 2019 at 6:28 AM Julia Lawall <julia.lawall@...6.fr> wrote:
> >
> > Hello,
> >
> > The change suggested by Coccinelle is not correct, but the original code
> > is not correct either because the argument to PTR_ERR should be a pointer,
> > not an integer.
> >
> > julia
> >
> > ---------- Forwarded message ----------
> > Date: Thu, 24 Oct 2019 18:21:57 +0800
> > From: kbuild test robot <lkp@...el.com>
> > To: kbuild@...ts.01.org
> > Cc: Julia Lawall <julia.lawall@...6.fr>
> > Subject: [PATCH] apparmor: fix odd_ptr_err.cocci warnings
> >
> > CC: kbuild-all@...ts.01.org
> > In-Reply-To: <20191021152348.3906-1-navid.emamdoost@...il.com>
> > References: <20191021152348.3906-1-navid.emamdoost@...il.com>
> > TO: Navid Emamdoost <navid.emamdoost@...il.com>
> >
> > From: kbuild test robot <lkp@...el.com>
> >
> > security/apparmor/audit.c:199:5-11: inconsistent IS_ERR and PTR_ERR on line 202.
> >
> > PTR_ERR should access the value just tested by IS_ERR
> >
> > Semantic patch information:
> > There can be false positives in the patch case, where it is the call to
> > IS_ERR that is wrong.
> >
> > Generated by: scripts/coccinelle/tests/odd_ptr_err.cocci
> >
> > Fixes: 6f939f24599c ("apparmor: Fix use-after-free in aa_audit_rule_init")
> > CC: Navid Emamdoost <navid.emamdoost@...il.com>
> > Signed-off-by: kbuild test robot <lkp@...el.com>
> > ---
> >
> > url: https://github.com/0day-ci/linux/commits/Navid-Emamdoost/apparmor-Fix-use-after-free-in-aa_audit_rule_init/20191024-123239
> > base: https://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git next-testing
> > :::::: branch date: 6 hours ago
> > :::::: commit date: 6 hours ago
> >
> > Please take the patch only if it's a positive warning. Thanks!
> >
> > audit.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > --- a/security/apparmor/audit.c
> > +++ b/security/apparmor/audit.c
> > @@ -199,7 +199,7 @@ int aa_audit_rule_init(u32 field, u32 op
> > if (IS_ERR(rule->label)) {
> > int err = rule->label;
> > aa_audit_rule_free(rule);
> > - return PTR_ERR(err);
> > + return PTR_ERR(rule->label);
> > }
> >
> > *vrule = rule;
>
>
>
> --
> Navid.
>
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