[Bug 196174] New: Bluetooth does not work - hccontrol prints EMSGSIZE error and fails

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=196174

            Bug ID: 196174
           Summary: Bluetooth does not work - hccontrol prints EMSGSIZE
                    error and fails
           Product: Base System
           Version: 11.0-CURRENT
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: jan.kokemueller at gmail.com

I can't get Bluetooth working. Setting up the netgraph nodes with ngctl works,
but trying to send a command with hccontrol fails with "Message too long"
(EMSGSIZE).

I've bisected this to r275326, a merge from the projects/sendfile branch. I
guess some of the socket changes don't work 100% reliably with the
netgraph/Bluetooth code.

I can reproduce this with a recent snapshot on a Thinkpad T420 with Bluetooth
from Broadcom. I can send more info if needed.

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