Re: WARNING: refcount bug in l2cap_chan_put

From: Marcel Holtmann
Date: Tue Feb 25 2020 - 01:29:24 EST


Hi Luiz,

>> (Resent in plain text; sorry for double send)
>>
>> I took a brief look at this error and uncovered that 6lowpan uses zero
>> locks when using l2cap (should be using the channel lock).
>>
>> It seems like it would be better just to convert its direct use of
>> l2cap channel into using an l2cap socket.
>
> I recall having some thought on that, I think having a socket like
> RFCOMM does would be better but I don't remember why I haven't
> follow-up on that, well we wanted to discontinue the bt specific
> 6lowpan on the kernel side though.

because sockets have their own locking issues for Bluetooth. We actually want to get rid of the internal socket usage.

Regards

Marcel