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Message-ID: <8ff97aaacab2fc3838290af0742a7bbf15cb0398.camel@hadess.net>
Subject: Re: [PATCH 0/2] USB: core: add a way to revoke access to open USB
 devices
From:   Bastien Nocera <hadess@hadess.net>
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     linux-usb@vger.kernel.org, bpf@vger.kernel.org,
        Alan Stern <stern@rowland.harvard.edu>,
        Benjamin Tissoires <benjamin.tissoires@redhat.com>,
        Peter Hutterer <peter.hutterer@who-t.net>,
        "Eric W . Biederman" <ebiederm@xmission.com>,
        Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Andrii Nakryiko <andrii@kernel.org>
Date:   Tue, 09 Aug 2022 13:15:38 +0200
In-Reply-To: <YvI3mcXDOHzOL78r@kroah.com>
References: <20220809094300.83116-1-hadess@hadess.net>
         <YvI3mcXDOHzOL78r@kroah.com>
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On Tue, 2022-08-09 at 12:31 +0200, Greg Kroah-Hartman wrote:
> On Tue, Aug 09, 2022 at 11:42:58AM +0200, Bastien Nocera wrote:
> > BPF list, first CC: here, I hope the commit messages are clear
> > enough to
> > understand the purpose of the patchset. If not, your comments would
> > be
> > greatly appreciated so I can make the commit messages self-
> > explanatory.
> > 
> > Eric, what would be the right identifier to use for a specific user
> > namespace that userspace could find out? I know the PIDs of the
> > bubblewrap processes that created those user namespaces, would
> > those be
> > good enough?
> > 
> > Changes since v2:
> > - Changed the internal API to pass a struct usb_device
> > - Fixed potential busy loop in user-space when revoking access to a
> >   device
> > 
> > Bastien Nocera (2):
> >   USB: core: add a way to revoke access to open USB devices
> >   usb: Implement usb_revoke() BPF function
> > 
> >  drivers/usb/core/devio.c | 79
> > ++++++++++++++++++++++++++++++++++++++--
> >  drivers/usb/core/usb.c   | 51 ++++++++++++++++++++++++++
> >  drivers/usb/core/usb.h   |  2 +
> >  3 files changed, 128 insertions(+), 4 deletions(-)
> > 
> > -- 
> > 2.37.1
> > 
> 
> You say "changes since v2", but have no version identifier on this
> series at all :(

It was sent as "RFC v2" under the same name. This is v3.

Sorry, but this will probably keep happening until the tools folks have
to use for kernel development aren't as clunky as they are now...