Horton

Reproduce debug_query_string==NULL on parallel workers.

Noah Misch <noah@leadboat.com>

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Commit: ab2e2ce466683b6af5ec956106cd905380d3d349
Author: Noah Misch <noah@leadboat.com>
Date: 2020-10-31T15:43:32Z
Releases: 13.1 
Reproduce debug_query_string==NULL on parallel workers.

Certain background workers initiate parallel queries while
debug_query_string==NULL, at which point they attempted strlen(NULL) and
died to SIGSEGV.  Older debug_query_string observers allow NULL, so do
likewise in these newer ones.  Back-patch to v11, where commit
7de4a1bcc56f494acbd0d6e70781df877dc8ecb5 introduced the first of these.

Discussion: https://postgr.es/m/20201014022636.GA1962668@rfd.leadboat.com

Files

PathChange+/−
src/backend/access/heap/vacuumlazy.c modified +19 −9
src/backend/access/nbtree/nbtsort.c modified +17 −8

Discussion