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Bug #3333
closedlchan release may stall indefinitely
Start date:
06/11/2018
Due date:
% Done:
100%
Spec Reference:
Description
When the MSC hard-releases the SCCP connection, we terminate the bsc_subscr_conn_fsm
, which calls lchan_release(conn->lchan, 0, RSL_REL_LOCAL_END);
from the fsm cleanup call-back.
That in turn causes a RLL_REL_REQ to be transmitted. However, if the MS never responds to that (out of reach, power-cycle, ...) there appears to be no timer running which would proceed with sending an RSL RF CHAN REL
to actually release the channel.
This is currently triggered by TC_bssap_rlsd_does_not_cause_bssmap_reset
involuntarily, as it tries to allocate 8 SDCCH.
Attaching a pcap file.
I'll add a dedicated test for this behavior.
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