On Mon, Jun 10, 2019 at 03:36:50PM +0200, Hans de Goede wrote:
> Hi,
>
> On 10-06-19 15:31, Hans de Goede wrote:
> > Hi All,
> >
> > First of all this is a known issue and it seems a fix is in the works,
> > but what I do not understand is why the commit causing this has not
> > simply been reverted until the fix is done, esp. for the 5.0.x
> > stable series where this was introduced in 5.0.15.
> >
> > The problem I'm talking about is commit d5bb334a8e17 ("Bluetooth: Align
> > minimum encryption key size for LE and BR/EDR connections"):
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d5bb334a8e171b262e48f378bd2096c0ea458265
> > basically completely breaking all somewhat older (and some current cheap
> > no-name) bluetooth devices:
> >
> > A revert of this was first proposed on May 22nd:
> > https://lore.kernel.org/netdev/CA+E=qVfopSA90vG2Kkh+XzdYdNn=M-hJN_AptW=R+B5v3HB9eA@xxxxxxxxxxxxxx/T/
> > We are 18 days further now and this problem still exists, including in the
> > 5.0.15+ and 5.1.x stable kernels.
> >
> > A solution has been suggested: https://lore.kernel.org/linux-bluetooth/20190522070540.48895-1-marcel@xxxxxxxxxxxx/T/#u
> > and at least the Fedora 5.1.4+ kernels now carry this as a temporary fix,
> > but as of today I do not see a fix nor a revert in Torvald's tree yet and
> > neither does there seem to be any fix in the 5.0.x and 5.1.x stable series.
> >
> > In the mean time we are getting a lot of bug reports about this:
> > https://bugzilla.kernel.org/show_bug.cgi?id=203643
> > https://bugzilla.redhat.com/show_bug.cgi?id=1711468
> > https://bugzilla.redhat.com/show_bug.cgi?id=1713871
> > https://bugzilla.redhat.com/show_bug.cgi?id=1713980
> >
> > And some reporters:
> > https://bugzilla.redhat.com/show_bug.cgi?id=1713871#c4
> > Are indicating that the Fedora kernels with the workaround included
> > still do not work...
>
> Given that things are still broken for some users, I suggest that
> for Fedora we replace the workaround with a straight forward revert
> of d5bb334a8e17 for now. Also the rawhide kernels are missing the
> workaround, so those are currently broken regardless.
The v5.1.8 kernels are already done building so this would happen for
v5.1.9. Hopefully upstream will decide on a course of action before
that, but if they haven't I'm not against carrying a revert instead of
the RFC patch.
I do I happen to know someone with a Playstation 3 controller so I've asked
them to see if they can reproduce #1713980, as well.
- Jeremy
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