| From: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> |
|---|---|
| To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | pgsql: Fix crash when reporting CREATE INDEX progress |
| Date: | 2019-10-16 12:53:22 |
| Message-ID: | E1iKinq-0004EZ-Ke@gemulon.postgresql.org |
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| Thread: | |
| Lists: | pgsql-committers |
Fix crash when reporting CREATE INDEX progress
A race condition can make us try to dereference a NULL pointer to the
PGPROC struct of a process that's already finished. That results in
crashes during REINDEX CONCURRENTLY and CREATE INDEX CONCURRENTLY.
This was introduced in ab0dfc961b6a, so backpatch to pg12.
Reported by: Justin Pryzby
Reviewed-by: Michaël Paquier
Discussion: https://postgr.es/m/20191012004446.GT10470@telsasoft.com
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/0d21f919eb86cd3baa267844d111c6a5af480696
Modified Files
--------------
src/backend/commands/indexcmds.c | 6 ++++--
src/backend/storage/lmgr/lmgr.c | 10 ++++------
2 files changed, 8 insertions(+), 8 deletions(-)
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