From 32d78894c2a92cbb2fe7b9160936fee31672e7d9 Mon Sep 17 00:00:00 2001
From: Robert Haas <rhaas@postgresql.org>
Date: Thu, 24 Jul 2014 08:19:19 -0400
Subject: [PATCH] Avoid access to already-released lock in
LockRefindAndRelease.
Spotted by Tom Lane.
---
src/backend/storage/lmgr/lock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/backend/storage/lmgr/lock.c b/src/backend/storage/lmgr/lock.c
index cd468bcc99..723051efb5 100644
--- a/src/backend/storage/lmgr/lock.c
+++ b/src/backend/storage/lmgr/lock.c
@@ -2949,7 +2949,7 @@ LockRefindAndRelease(LockMethod lockMethodTable, PGPROC *proc,
* Decrement strong lock count. This logic is needed only for 2PC.
*/
if (decrement_strong_lock_count
- && ConflictsWithRelationFastPath(&lock->tag, lockmode))
+ && ConflictsWithRelationFastPath(locktag, lockmode))
{
uint32 fasthashcode = FastPathStrongLockHashPartition(hashcode);
--
2.40.0