linux-kernel - Re: [net PATCH] octeontx2-pf: Fix resource leakage in VF driver unbind

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <79108835e679706d138afc33a19a96ed4a1f71ea.camel@redhat.com>
Date:   Tue, 10 Jan 2023 11:43:28 +0100
From:   Paolo Abeni <pabeni@...hat.com>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     Hariprasad Kelam <hkelam@...vell.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kuba@...nel.org, davem@...emloft.net,
        edumazet@...gle.com, sgoutham@...vell.com, gakula@...vell.com,
        sbhatta@...vell.com
Subject: Re: [net PATCH] octeontx2-pf: Fix resource leakage in VF driver
 unbind

Hello,

On Tue, 2023-01-10 at 12:29 +0200, Leon Romanovsky wrote:
> On Tue, Jan 10, 2023 at 10:20:15AM +0000, patchwork-bot+netdevbpf@...nel.org wrote:
> > Hello:
> > 
> > This patch was applied to netdev/net.git (master)
> > by Paolo Abeni <pabeni@...hat.com>:
> > 
> > On Mon, 9 Jan 2023 11:43:25 +0530 you wrote:
> > > resources allocated like mcam entries to support the Ntuple feature
> > > and hash tables for the tc feature are not getting freed in driver
> > > unbind. This patch fixes the issue.
> > > 
> > > Fixes: 2da489432747 ("octeontx2-pf: devlink params support to set mcam entry count")
> > > Signed-off-by: Hariprasad Kelam <hkelam@...vell.com>
> > > Signed-off-by: Sunil Kovvuri Goutham <sgoutham@...vell.com>
> > > 
> > > [...]
> > 
> > Here is the summary with links:
> >   - [net] octeontx2-pf: Fix resource leakage in VF driver unbind
> >     https://git.kernel.org/netdev/net/c/53da7aec3298
> 
> I don't think that this patch should be applied.
> 
> It looks like wrong Fixes to me and I don't see clearly how structures
> were allocated on VF which were cleared in this patch.

My understanding is that the resource allocation happens via:

otx2_dl_mcam_count_set()

which is registered as the devlink parameter write operation on the vf
by the fixes commit - the patch looks legit to me.

Did I miss something?

Thanks!

Paolo