Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <5688456234f5d15ea9ca0f000350c28610ed2639.camel@redhat.com>
Subject: Re: [Intel-wired-lan] bug with rx-udp-gro-forwarding offloading?
From:   Paolo Abeni <pabeni@redhat.com>
To:     Ian Kumlien <ian.kumlien@gmail.com>
Cc:     Alexander Lobakin <aleksander.lobakin@intel.com>,
        intel-wired-lan <intel-wired-lan@lists.osuosl.org>,
        Jakub Kicinski <kuba@kernel.org>,
        Eric Dumazet <edumazet@google.com>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Date:   Wed, 28 Jun 2023 17:14:45 +0200
In-Reply-To: <CAA85sZs4KkfVojx=vxbDaWhWRpxiHc-RCc2OLD2c+VefRjpTfw@mail.gmail.com>
References: <CAA85sZukiFq4A+b9+en_G85eVDNXMQsnGc4o-4NZ9SfWKqaULA@mail.gmail.com>
         <CAA85sZvm1dL3oGO85k4R+TaqBiJsggUTpZmGpH1+dqdC+U_s1w@mail.gmail.com>
         <e7e49ed5-09e2-da48-002d-c7eccc9f9451@intel.com>
         <CAA85sZtyM+X_oHcpOBNSgF=kmB6k32bpB8FCJN5cVE14YCba+A@mail.gmail.com>
         <22aad588-47d6-6441-45b2-0e685ed84c8d@intel.com>
         <CAA85sZti1=ET=Tc3MoqCX0FqthHLf6MSxGNAhJUNiMms1TfoKA@mail.gmail.com>
         <CAA85sZvn04k7=oiTQ=4_C8x7pNEXRWzeEStcaXvi3v63ah7OUQ@mail.gmail.com>
         <ffb554bfa4739381d928406ad24697a4dbbbe4a2.camel@redhat.com>
         <CAA85sZunA=tf0FgLH=MNVYq3Edewb1j58oBAoXE1Tyuy3GJObg@mail.gmail.com>
         <CAA85sZsH1tMwLtL=VDa5=GBdVNWgifvhK+eG-hQg69PeSxBWkg@mail.gmail.com>
         <CAA85sZu=CzJx9QD87-vehOStzO9qHUSWk6DXZg3TzJeqOV5-aw@mail.gmail.com>
         <0a040331995c072c56fce58794848f5e9853c44f.camel@redhat.com>
         <CAA85sZuuwxtAQcMe3LHpFVeF7y-bVoHtO1nukAa2+NyJw3zcyg@mail.gmail.com>
         <CAA85sZurk7-_0XGmoCEM93vu3vbqRgPTH4QVymPR5BeeFw6iFg@mail.gmail.com>
         <486ae2687cd2e2624c0db1ea1f3d6ca36db15411.camel@redhat.com>
         <CAA85sZsJEZK0g0fGfH+toiHm_o4pdN+Wo0Wq9fgsUjHXGxgxQA@mail.gmail.com>
         <CAA85sZs4KkfVojx=vxbDaWhWRpxiHc-RCc2OLD2c+VefRjpTfw@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
User-Agent: Evolution 3.46.4 (3.46.4-1.fc37) 
MIME-Version: 1.0
Precedence: bulk

On Wed, 2023-06-28 at 14:04 +0200, Ian Kumlien wrote:
> So have some hits, would it be better without your warn on? ... Things
> are a bit slow atm - lets just say that i noticed the stacktraces
> because a stream stuttered =3D)

Sorry, I screwed-up completely a newly added check.

If you have Kasan enabled you can simply and more safely remove my 2nd
patch. Kasan should be able to catch all the out-of-buffer scenarios
such checks were intended to prevent.

Cheers,

Paolo