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Can KILL -SIGUSR1 cause a process to crash?

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TitleCan KILL -SIGUSR1 cause a process to crash?
URL NameCan-a-kill-SIGUSR1-cause-a-process-to-crash
Article Number000118299
EnvironmentProduct: OpenEdge
Version: All supported versions
OS: UNIX / Linux
Question/Problem Description
Can kill -SIGUSR1 cause an OpenEdge process to crash with SE 49?
Can running cause a process to crash on Unix or Linux ?
Can SIGUSR1 signals sent to a client process cause a DBDOWN?
Steps to Reproduce
Clarifying Information
kill -SIGUSR1 is used on Unix/Linux systems to trigger an ABL client process to generate a protrace file
Error MessageSYSTEM ERROR: Memory violation. (49)
Defect Number
Enhancement Number
When a process that receives a -SIGUSR1 request to dump a stack and also receives a simultaneous interrupt signal, the process can end up crashing with SYSTEM ERROR 49 which may also bring the database down as a result, or the process will hang indefinitely and no longer be responsive to further interrupt signals.

The cause has been identified in async unsafe calls in signal handling as an ongoing investigation which have been addressed in separate defects:

Upgrade to OpenEdge 11.6.4, 11.7 or later where all known issues associated with async unsafe signal handling have been addressed by implementing alternative functions, which are safe with asynchronous signal handling: Should any further incidents occur in later versions, please open a support case with technical support along with a reproducible (if possible) to be pursued as a defect. 
Last Modified Date11/20/2020 7:18 AM
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