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pgsql: Add stack depth check to QueueFKConstraintValidation().
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* pgsql: Add stack depth check to QueueFKConstraintValidation().
@ 2026-05-26 15:58  Tom Lane <[email protected]>
  0 siblings, 0 replies; 2+ messages in thread

From: Tom Lane @ 2026-05-26 15:58 UTC (permalink / raw)
  To: [email protected]

Add stack depth check to QueueFKConstraintValidation().

QueueFKConstraintValidation() recurses through the partition hierarchy
to queue child constraint validations and to mark child rows as
validated.  With a sufficiently deep partition tree, this can result
in a stack-overflow crash.  Defend against that as we do elsewhere.

Bug: #19482
Reported-by: Alexander Lakhin <[email protected]>
Author: Ayush Tiwari <[email protected]>
Reviewed-by: Tom Lane <[email protected]>
Discussion: https://postgr.es/m/[email protected]
Backpatch-through: 18

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/61ea5cc6a61ff9eb8b3d7b055e507a726e5856c7

Modified Files
--------------
src/backend/commands/tablecmds.c | 3 +++
1 file changed, 3 insertions(+)



^ permalink  raw  reply  [nested|flat] 2+ messages in thread

* pgsql: Add stack depth check to QueueFKConstraintValidation().
@ 2026-05-26 15:58  Tom Lane <[email protected]>
  0 siblings, 0 replies; 2+ messages in thread

From: Tom Lane @ 2026-05-26 15:58 UTC (permalink / raw)
  To: [email protected]

Add stack depth check to QueueFKConstraintValidation().

QueueFKConstraintValidation() recurses through the partition hierarchy
to queue child constraint validations and to mark child rows as
validated.  With a sufficiently deep partition tree, this can result
in a stack-overflow crash.  Defend against that as we do elsewhere.

Bug: #19482
Reported-by: Alexander Lakhin <[email protected]>
Author: Ayush Tiwari <[email protected]>
Reviewed-by: Tom Lane <[email protected]>
Discussion: https://postgr.es/m/[email protected]
Backpatch-through: 18

Branch
------
REL_18_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/0480d84ee35f386d3d78b58488303f9f6ba1b4c2

Modified Files
--------------
src/backend/commands/tablecmds.c | 3 +++
1 file changed, 3 insertions(+)



^ permalink  raw  reply  [nested|flat] 2+ messages in thread


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2026-05-26 15:58 pgsql: Add stack depth check to QueueFKConstraintValidation(). Tom Lane <[email protected]>
2026-05-26 15:58 pgsql: Add stack depth check to QueueFKConstraintValidation(). Tom Lane <[email protected]>

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