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pgsql: Fix reset of incorrect hash iterator in GROUPING SETS queries 2+ messages / 1 participants [nested] [flat]
* pgsql: Fix reset of incorrect hash iterator in GROUPING SETS queries @ 2025-10-18 03:07 David Rowley <drowley@postgresql.org> 0 siblings, 0 replies; 2+ messages in thread From: David Rowley @ 2025-10-18 03:07 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org Fix reset of incorrect hash iterator in GROUPING SETS queries This fixes an unlikely issue when fetching GROUPING SET results from their internally stored hash tables. It was possible in rare cases that the hash iterator would be set up incorrectly which could result in a crash. This was introduced in 4d143509c, so backpatch to v18. Many thanks to Yuri Zamyatin for reporting and helping to debug this issue. Bug: #19078 Reported-by: Yuri Zamyatin <yuri@yrz.am> Author: David Rowley <dgrowleyml@gmail.com> Reviewed-by: Jeff Davis <pgsql@j-davis.com> Discussion: https://postgr.es/m/19078-dfd62f840a2c0766@postgresql.org Backpatch-through: 18 Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/5c0a20003b4396930a354105ccf47402ca5047d2 Modified Files -------------- src/backend/executor/nodeAgg.c | 2 +- src/include/lib/simplehash.h | 4 ++++ 2 files changed, 5 insertions(+), 1 deletion(-) ^ permalink raw reply [nested|flat] 2+ messages in thread
* pgsql: Fix reset of incorrect hash iterator in GROUPING SETS queries @ 2025-10-18 03:07 David Rowley <drowley@postgresql.org> 0 siblings, 0 replies; 2+ messages in thread From: David Rowley @ 2025-10-18 03:07 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org Fix reset of incorrect hash iterator in GROUPING SETS queries This fixes an unlikely issue when fetching GROUPING SET results from their internally stored hash tables. It was possible in rare cases that the hash iterator would be set up incorrectly which could result in a crash. This was introduced in 4d143509c, so backpatch to v18. Many thanks to Yuri Zamyatin for reporting and helping to debug this issue. Bug: #19078 Reported-by: Yuri Zamyatin <yuri@yrz.am> Author: David Rowley <dgrowleyml@gmail.com> Reviewed-by: Jeff Davis <pgsql@j-davis.com> Discussion: https://postgr.es/m/19078-dfd62f840a2c0766@postgresql.org Backpatch-through: 18 Branch ------ REL_18_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/0b6a02f0355c8950ffe22b52eac86f6261e19caf Modified Files -------------- src/backend/executor/nodeAgg.c | 2 +- src/include/lib/simplehash.h | 4 ++++ 2 files changed, 5 insertions(+), 1 deletion(-) ^ permalink raw reply [nested|flat] 2+ messages in thread
end of thread, other threads:[~2025-10-18 03:07 UTC | newest] Thread overview: 2+ messages (download: mbox mbox.gz follow: Atom feed) -- links below jump to the message on this page -- 2025-10-18 03:07 pgsql: Fix reset of incorrect hash iterator in GROUPING SETS queries David Rowley <drowley@postgresql.org> 2025-10-18 03:07 pgsql: Fix reset of incorrect hash iterator in GROUPING SETS queries David Rowley <drowley@postgresql.org>
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