Re: [Linux Kernel Bug] possible deadlock in l2cap_chan_connect

[Ali Ahmet Memiş]

On Sat, Sep 12, 2026 at 12:59:09AM +0800, Jiaming Zhang wrote:
> We are actively working on a patch, if the above solution is acceptable,
> I would be happy to submit a formal patch for review.

This is the same lock inversion syzbot reported as 74071deb, and Mikhail
already has a fix for it under review:

  https://lore.kernel.org/linux-bluetooth/20260904012028.77590-1-mikhail.v.gavrilov@xxxxxxxxx/

It uses the same approach you describe, queue the confirmation and let
krfcommd handle it under rfcomm_mutex.