Crash when a quorum queue is deleted with a consumer attached (`rabbit_fifo_client:get_missing_deliveries/4`)

[mkuratczyk]

Describe the bug

crasher:
  initial call: rabbit_amqp_session:init/1
  pid: <0.3737.0>
  registered_name: []
  exception exit: {{shutdown,delete},
                   {gen_statem,call,
                       [{'%2F_amqp10_qq-1',
                            'rabbit@main-single-s20000-server-0.main-single-s20000-nodes.performance-tests'},
                        {aux_command,{get_checked_out,3,"򉫬"}},
                        infinity]}}
    in function  gen:do_call/4 (gen.erl, line 246)
    in call from gen_statem:call/3 (gen_statem.erl, line 923)
    in call from rabbit_fifo_client:get_missing_deliveries/4 (rabbit_fifo_client.erl, line 869)
    in call from rabbit_fifo_client:handle_delivery/4 (rabbit_fifo_client.erl, line 800)
    in call from rabbit_queue_type:handle_event/3 (rabbit_queue_type.erl, line 596)
    in call from rabbit_amqp_session:handle_queue_event/2 (rabbit_amqp_session.erl, line 2059)
    in call from rabbit_amqp_session:handle_cast/2 (rabbit_amqp_session.erl, line 547)
    in call from gen_server:try_handle_cast/3 (gen_server.erl, line 1121)

Reproduction steps

No clear repro steps.

Expected behavior

no crash

Additional context

No response

[ansd]

Is this AMQP 1.0 specific or does the same happen with AMQP 0.9.1?

[mkuratczyk]

I haven't seen anything similar with AMQP 0.9.1 but there are no clear repro steps and I've only since this happen a few times with AMQP-1.0 as well. The jury is still out I'd say.