Fix crash when reporting CREATE INDEX progress
A race condition can make us try to dereference a NULL pointer to the
PGPROC struct of a process that's already finished. That results in
crashes during REINDEX CONCURRENTLY and CREATE INDEX CONCURRENTLY.
This was introduced in ab0dfc961b6a, so backpatch to pg12.
Reported by: Justin Pryzby
Reviewed-by: Michaël Paquier
Discussion: https://postgr.es/m/20191012004446.GT10470@telsasoft.com
Branch
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REL_12_STABLE
Details
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https://git.postgresql.org/pg/commitdiff/1cd5bc3ccf92a511b087629b2c914dffa9151fce
Modified Files
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src/backend/commands/indexcmds.c | 6 ++++--
src/backend/storage/lmgr/lmgr.c | 10 ++++------
2 files changed, 8 insertions(+), 8 deletions(-)