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pgsql: Fix assertion failure with latch wait in single-user mode 2+ messages / 1 participants [nested] [flat]
* pgsql: Fix assertion failure with latch wait in single-user mode @ 2025-07-25 07:17 Michael Paquier <michael@paquier.xyz> 0 siblings, 0 replies; 2+ messages in thread From: Michael Paquier @ 2025-07-25 07:17 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org Fix assertion failure with latch wait in single-user mode LatchWaitSetPostmasterDeathPos, the latch event position for the postmaster death event, is initialized under IsUnderPostmaster. WaitLatch() considered it as a valid wait target in single-user mode (!IsUnderPostmaster), which was incorrect. One code path found to fail with an assertion failure is a database drop in single-user mode while waiting in WaitForProcSignalBarrier() after the drop. Oversight in commit 84e5b2f07a5e. Author: Patrick Stählin <me@packi.ch> Co-authored-by: Ronan Dunklau <ronan.dunklau@aiven.io> Discussion: https://postgr.es/m/18996-3a2744c8140488de@postgresql.org Backpatch-through: 18 Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/641f20d4c433b66df2928408fb2b44bd165c2329 Modified Files -------------- src/backend/storage/ipc/latch.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) ^ permalink raw reply [nested|flat] 2+ messages in thread
* pgsql: Fix assertion failure with latch wait in single-user mode @ 2025-07-25 07:17 Michael Paquier <michael@paquier.xyz> 0 siblings, 0 replies; 2+ messages in thread From: Michael Paquier @ 2025-07-25 07:17 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org Fix assertion failure with latch wait in single-user mode LatchWaitSetPostmasterDeathPos, the latch event position for the postmaster death event, is initialized under IsUnderPostmaster. WaitLatch() considered it as a valid wait target in single-user mode (!IsUnderPostmaster), which was incorrect. One code path found to fail with an assertion failure is a database drop in single-user mode while waiting in WaitForProcSignalBarrier() after the drop. Oversight in commit 84e5b2f07a5e. Author: Patrick Stählin <me@packi.ch> Co-authored-by: Ronan Dunklau <ronan.dunklau@aiven.io> Discussion: https://postgr.es/m/18996-3a2744c8140488de@postgresql.org Backpatch-through: 18 Branch ------ REL_18_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/f7dfccf9605dab54956321e236de3415a2ba2fa3 Modified Files -------------- src/backend/storage/ipc/latch.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) ^ permalink raw reply [nested|flat] 2+ messages in thread
end of thread, other threads:[~2025-07-25 07:17 UTC | newest] Thread overview: 2+ messages (download: mbox mbox.gz follow: Atom feed) -- links below jump to the message on this page -- 2025-07-25 07:17 pgsql: Fix assertion failure with latch wait in single-user mode Michael Paquier <michael@paquier.xyz> 2025-07-25 07:17 pgsql: Fix assertion failure with latch wait in single-user mode Michael Paquier <michael@paquier.xyz>
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