HP Tru64 UNIX - Version 5.1B-3: Potential System Panic - Simple lock timeout



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 Advisory Information

RELEASE DATE: 2006-03-27


KCH simple_lock: time limit exceed. A thread, after taking simple lock, returns without unlocking it.

The stack trace of this failure appears as follows:

1 panic
2 simple_lock_fault
3 simple_lock_time_violation
4 kch_lock_chain
5 kch_insert_set
6 kch_join_attach_internal
7 kch_join_set
8 drd_kgs_create_server_join_start
9 drd_kgs_start_proposal
10 drd_handle_one_event
11 drd_handle_events
12 drd_event_thread


The following versions are affected:

  • 5.1B-3
  • 5.1B-2/PK4

HP is releasing the following ERP kits publicly for use by any customer. The ERP kits use dupatch to install and will not install over any Customer Specific Patches (CSPs) that have file intersections with the ERP. Contact your service provider for assistance if the installation of an ERP is blocked by any of your installed CSPs.

The fixes contained in the ERP kits are scheduled to be available in the following mainstream patch kit:

HP Tru64 UNIX Version 5.1B-4

Early Release Patches

HP Tru64 UNIX version: V5.1B-3:

ERP Kit Name: TCRKIT1000454-V51BB26-E-20060317
Kit Location:

HP Tru64 UNIX version 5.1B-2/PK4:
ERP Kit Name: TCRKIT1000455-V51BB25-E-20060317
Kit Location: