linux-kernel - Re: [PATCH 0/3] Fix some seq_file users that were recently broken

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Message-ID: <20210208114249.6c7e04e9@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Mon, 8 Feb 2021 11:42:49 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     NeilBrown <neilb@...e.de>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Jonathan Corbet <corbet@....net>,
        Xin Long <lucien.xin@...il.com>, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Vlad Yasevich <vyasevich@...il.com>,
        Neil Horman <nhorman@...driver.com>,
        Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        linux-sctp@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 0/3] Fix some seq_file users that were recently broken

On Sun, 7 Feb 2021 13:11:45 -0800 Andrew Morton wrote:
> On Sat, 6 Feb 2021 14:29:24 -0800 Jakub Kicinski <kuba@...nel.org> wrote:
> > On Fri, 5 Feb 2021 14:35:50 -0800 Andrew Morton wrote:  
> > > On Fri, 05 Feb 2021 11:36:30 +1100 NeilBrown <neilb@...e.de> wrote:
> > > 1f4aace60b0e ("fs/seq_file.c: simplify seq_file iteration code and
> > > interface") was August 2018, so I don't think "recent" applies here?
> > > 
> > > I didn't look closely, but it appears that the sctp procfs file is
> > > world-readable.  So we gave unprivileged userspace the ability to leak
> > > kernel memory?
> > > 
> > > So I'm thinking that we aim for 5.12-rc1 on all three patches with a cc:stable?  
> > 
> > I'd rather take the sctp patch sooner, we'll send another batch 
> > of networking fixes for 5.11, anyway. Would that be okay with you?  
> 
> Sure.

Applied patch 3 to net, thanks everyone!