Fix race condition when sharing tuple descriptors. Parallel query processes that called BlessTupleDesc() for identical tuple descriptors at the same moment could crash. There was code to handle that rare case, but it dereferenced a bogus DSA pointer. Repair.
Back-patch to 11, where commit cc5f8136 added support for sharing tuple descriptors in parallel queries. Reported-by: Eric Thinnes <e.thin...@gmx.de> Discussion: https://postgr.es/m/99aaa2eb-e194-bf07-c29a-1a76b4f2bcf9%40gmx.de Branch ------ REL_11_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/a15d84470db8f42d3850a007dfa166d3fce5bc66 Modified Files -------------- src/backend/utils/cache/typcache.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)