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Date:   Sat, 2 Dec 2017 18:48:50 +0000
From:   Al Viro <>
To:     Daniel Borkmann <>
Cc:     Kees Cook <>,
        Shmulik Ladkani <>,
        Willem de Bruijn <>,
        Pablo Neira Ayuso <>,
        Linus Torvalds <>,
        David Miller <>,
        LKML <>,
        Network Development <>,
        Christoph Hellwig <>,
        Thomas Garnier <>,
        Jann Horn <>
Subject: Re: netfilter: xt_bpf: Fix XT_BPF_MODE_FD_PINNED mode of

On Fri, Dec 01, 2017 at 09:47:00PM +0100, Daniel Borkmann wrote:

> > Might want to replace security_path_mknod() with something saner, while we are
> > at it.
> > 
> > Objections?
> No, thanks for looking into this, and sorry for this fugly hack! :( Not
> that this doesn't make it any better, but I think back then I took it
> over from mqueue implementation ... should have known better and looking
> into making this generic instead, sigh. The above looks good to me, so
> no objections from my side and thanks for working on it!
> > PS: mqueue.c would also benefit from such primitive - do_create() there would
> > simply pass attr as callback's argument into vfs_mkobj(), with callback being
> > the guts of mqueue_create()...

OK...  See vfs.git#untested.mkobj; it really needs testing, though - mq_open(2)
passes LTP tests, but that's not saying much, and BPF side is completely

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