| From: | Thomas Munro <tmunro(at)postgresql(dot)org> |
|---|---|
| To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | pgsql: Fix memory leak on DSM slot exhaustion. |
| Date: | 2020-02-01 02:35:38 |
| Message-ID: | [email protected] |
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| Thread: | |
| Lists: | pgsql-committers |
Fix memory leak on DSM slot exhaustion.
If we attempt to create a DSM segment when no slots are available,
we should return the memory to the operating system. Previously
we did that if the DSM_CREATE_NULL_IF_MAXSEGMENTS flag was
passed in, but we didn't do it if an error was raised. Repair.
Back-patch to 9.4, where DSM segments arrived.
Author: Thomas Munro
Reviewed-by: Robert Haas
Reported-by: Julian Backes
Discussion: https://postgr.es/m/CA%2BhUKGKAAoEw-R4om0d2YM4eqT1eGEi6%3DQot-3ceDR-SLiWVDw%40mail.gmail.com
Branch
------
REL9_5_STABLE
Modified Files
--------------
src/backend/storage/ipc/dsm.c | 17 ++++++++---------
1 file changed, 8 insertions(+), 9 deletions(-)
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