0001-add-valgrind-calls.patch

diff --git a/src/backend/storage/buffer/bufmgr.c b/src/backend/storage/buffer/bufmgr.c
index e4b25587..83fde10 100644
--- a/src/backend/storage/buffer/bufmgr.c
+++ b/src/backend/storage/buffer/bufmgr.c
@@ -47,6 +47,7 @@
 #include "storage/proc.h"
 #include "storage/smgr.h"
 #include "storage/standby.h"
+#include "utils/memdebug.h"
 #include "utils/rel.h"
 #include "utils/resowner_private.h"
 #include "utils/timestamp.h"
@@ -1438,6 +1439,9 @@ PinBuffer(volatile BufferDesc *buf, BufferAccessStrategy strategy)
 		ref = NewPrivateRefCountEntry(b + 1);
 
 		LockBufHdr(buf);
+
+		VALGRIND_MAKE_MEM_DEFINED(BufHdrGetBlock(buf), BLCKSZ);
+
 		buf->refcount++;
 		if (strategy == NULL)
 		{
@@ -1498,6 +1502,8 @@ PinBuffer_Locked(volatile BufferDesc *buf)
 	 */
 	Assert(GetPrivateRefCountEntry(b + 1, false) == NULL);
 
+	VALGRIND_MAKE_MEM_DEFINED(BufHdrGetBlock(buf), BLCKSZ);
+
 	buf->refcount++;
 	UnlockBufHdr(buf);
 
@@ -1543,6 +1549,8 @@ UnpinBuffer(volatile BufferDesc *buf, bool fixOwner)
 		Assert(buf->refcount > 0);
 		buf->refcount--;
 
+		VALGRIND_MAKE_MEM_NOACCESS(BufHdrGetBlock(buf), BLCKSZ);
+
 		/* Support LockBufferForCleanup() */
 		if ((buf->flags & BM_PIN_COUNT_WAITER) &&
 			buf->refcount == 1)