linux-kernel - Re: [PATCH] Revert "Bluetooth: Update resolving list when updating whitelist"

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Message-ID: <20201003160713.GA1512229@kroah.com>
Date:   Sat, 3 Oct 2020 18:07:13 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Marcel Holtmann <marcel@...tmann.org>
Cc:     Johan Hedberg <johan.hedberg@...il.com>,
        Sathish Narsimman <sathish.narasimman@...el.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        linux-bluetooth <linux-bluetooth@...r.kernel.org>,
        "open list:NETWORKING [GENERAL]" <netdev@...r.kernel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Revert "Bluetooth: Update resolving list when updating
 whitelist"

On Sat, Oct 03, 2020 at 05:51:03PM +0200, Marcel Holtmann wrote:
> Hi Greg,
> 
> > This reverts commit 0eee35bdfa3b472cc986ecc6ad76293fdcda59e2 as it
> > breaks all bluetooth connections on my machine.
> > 
> > Cc: Marcel Holtmann <marcel@...tmann.org>
> > Cc: Sathish Narsimman <sathish.narasimman@...el.com>
> > Fixes: 0eee35bdfa3b ("Bluetooth: Update resolving list when updating whitelist")
> > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > ---
> > net/bluetooth/hci_request.c | 41 ++-----------------------------------
> > 1 file changed, 2 insertions(+), 39 deletions(-)
> > 
> > This has been bugging me for since 5.9-rc1, when all bluetooth devices
> > stopped working on my desktop system.  I finally got the time to do
> > bisection today, and it came down to this patch.  Reverting it on top of
> > 5.9-rc7 restored bluetooth devices and now my input devices properly
> > work.
> > 
> > As it's almost 5.9-final, any chance this can be merged now to fix the
> > issue?
> 
> can you be specific what breaks since our guys and I also think the
> ChromeOS guys have been testing these series of patches heavily.

My bluetooth trackball does not connect at all.  With this reverted, it
all "just works".

Same I think for a Bluetooth headset, can check that again if you really
need me to, but the trackball is reliable here.

> When you run btmon does it indicate any errors?

How do I run it and where are the errors displayed?

> Do you have a chance to test net-next and see the LL Privacy there might have addressed this?

Have a specific set of patches I can test?  It wouldn't be good to have
5.9-final go out with this not working at all.

thanks,

greg k-h