Re: Bluetooth kernel BUG with Intel AX211 (regression in 6.1.83)

Luiz Augusto von Dentz
2024-11-05T17:54:05Z

Hi,

On Tue, Nov 5, 2024 at 12:29 PM Thorsten Leemhuis
<regressions@leemhuis.info> wrote:
>
> On 31.10.24 07:33, Salvatore Bonaccorso wrote:
> > On Tue, Jun 18, 2024 at 12:30:18PM +0200, Thorsten Leemhuis wrote:
> >> On 12.06.24 14:04, Greg KH wrote:
> >>> On Thu, Jun 06, 2024 at 12:18:18PM +0200, Thorsten Leemhuis wrote:
> >>>> On 03.06.24 22:03, Mike wrote:
> >>>>> On 29.05.24 11:06, Thorsten Leemhuis wrote:
> >>>>> [...]
> >>>>> I understand that 6.9-rc5[1] worked fine, but I guess it will take some
> >>>>> time to be
> >>>>> included in Debian stable, so having a patch for 6.1.x will be much
> >>>>> appreciated.
> >>>>> I do not have the time to follow the vanilla (latest) release as is
> >>>>> likely the case for
> >>>>> many other Linux users.
> >>>>>
> >>>> Still no reaction from the bluetooth developers. Guess they are busy
> >>>> and/or do not care about 6.1.y. In that case:
> >>>>
> >>>> @Greg: do you might have an idea how the 6.1.y commit a13f316e90fdb1
> >>>> ("Bluetooth: hci_conn: Consolidate code for aborting connections") might
> >>>> cause this or if it's missing some per-requisite? If not I wonder if
> >>>> reverting that patch from 6.1.y might be the best move to resolve this
> >>>> regression. Mike earlier in
> >>>> https://lore.kernel.org/all/c947e600-e126-43ea-9530-0389206bef5e@gmail.com/
> >>>> confirmed that this fixed the problem in tests. Jeremy (who started the
> >>>> thread and afaics has the same problem) did not reply.
> >>>
> >>> How was this reverted? I get a bunch of conflicts as this commit was
> >>> added as a dependency of a patch later in the series.
> >>>
> >>> So if this wants to be reverted from 6.1.y, can someone send me the
> >>> revert that has been tested to work?
> >>
> >> Mike, can you help out here, as you apparently managed a revert earlier?
> >> Without you or someone else submitting a revert I fear this won't be
> >> resolved...
> >
> > Trying to reboostrap this, as people running 6.1.112 based kernel
> > seems still hitting the issue, but have not asked yet if it happens as
> > well for 6.114.
> >
> > https://bugs.debian.org/1086447
> >
> > Mike, since I guess you are still as well affected as well, does the
> > issue trigger on 6.1.114 for you and does reverting changes from
> > a13f316e90fdb1 still fix the issue? Can you send your
> > backport/changes?
>
> Hmmm, no reply. Is there maybe someone in that bug that could create and
> test a new revert to finally get this resolved upstream? Seem we
> otherwise are kinda stuck here.

Looks like we didn't tag things like 5af1f84ed13a ("Bluetooth:
hci_sync: Fix UAF on hci_abort_conn_sync") and a239110ee8e0
("Bluetooth: hci_sync: always check if connection is alive before
deleting") that are actually fixes to a13f316e90fdb1.

> Ciao, Thorsten

--
Luiz Augusto von Dentz