diff --git a/src/test/obj_pmalloc_mt/TEST0 b/src/test/obj_pmalloc_mt/TEST0
index 6e77e951bd8..fd065e9193c 100755
--- a/src/test/obj_pmalloc_mt/TEST0
+++ b/src/test/obj_pmalloc_mt/TEST0
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # SPDX-License-Identifier: BSD-3-Clause
-# Copyright 2015-2019, Intel Corporation
+# Copyright 2015-2023, Intel Corporation
 
 #
 # src/test/obj_pmalloc_mt/TEST0 -- multithreaded allocator test
@@ -16,6 +16,6 @@ configure_valgrind helgrind force-enable
 setup
 
 PMEM_IS_PMEM_FORCE=1 expect_normal_exit\
-	./obj_pmalloc_mt$EXESUFFIX 32 1000 100 $DIR/testfile
+	./obj_pmalloc_mt$EXESUFFIX 32 1000 100 $DIR/testfile0
 
 pass
diff --git a/src/test/obj_pmalloc_mt/TEST1 b/src/test/obj_pmalloc_mt/TEST1
index 672a2e27136..9c55955adb9 100755
--- a/src/test/obj_pmalloc_mt/TEST1
+++ b/src/test/obj_pmalloc_mt/TEST1
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # SPDX-License-Identifier: BSD-3-Clause
-# Copyright 2016-2019, Intel Corporation
+# Copyright 2016-2023, Intel Corporation
 
 #
 # src/test/obj_pmalloc_mt/TEST1 -- multithreaded allocator test
@@ -16,6 +16,6 @@ configure_valgrind helgrind force-disable
 setup
 
 PMEM_IS_PMEM_FORCE=1 expect_normal_exit\
-	./obj_pmalloc_mt$EXESUFFIX 32 1000 100 $DIR/testfile
+	./obj_pmalloc_mt$EXESUFFIX 32 1000 100 $DIR/testfile1
 
 pass
diff --git a/src/test/obj_pmalloc_mt/TEST2 b/src/test/obj_pmalloc_mt/TEST2
index 68fb8b4543b..2abd46e192a 100755
--- a/src/test/obj_pmalloc_mt/TEST2
+++ b/src/test/obj_pmalloc_mt/TEST2
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # SPDX-License-Identifier: BSD-3-Clause
-# Copyright 2015-2019, Intel Corporation
+# Copyright 2015-2023, Intel Corporation
 
 #
 # src/test/obj_pmalloc_mt/TEST2 -- multithreaded allocator test
@@ -16,6 +16,6 @@ configure_valgrind helgrind force-enable
 setup
 
 PMEM_IS_PMEM_FORCE=1 expect_normal_exit\
-	./obj_pmalloc_mt$EXESUFFIX 4 64 4 $DIR/testfile
+	./obj_pmalloc_mt$EXESUFFIX 4 64 4 $DIR/testfile2
 
 pass
diff --git a/src/test/obj_pmalloc_mt/TEST3 b/src/test/obj_pmalloc_mt/TEST3
index b1fe2f4db84..7f230ae0e14 100755
--- a/src/test/obj_pmalloc_mt/TEST3
+++ b/src/test/obj_pmalloc_mt/TEST3
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # SPDX-License-Identifier: BSD-3-Clause
-# Copyright 2015-2019, Intel Corporation
+# Copyright 2015-2023, Intel Corporation
 
 #
 # src/test/obj_pmalloc_mt/TEST3 -- multithreaded allocator test
@@ -16,6 +16,6 @@ configure_valgrind drd force-enable
 setup
 
 PMEM_IS_PMEM_FORCE=1 expect_normal_exit\
-	./obj_pmalloc_mt$EXESUFFIX 4 64 4 $DIR/testfile
+	./obj_pmalloc_mt$EXESUFFIX 4 64 4 $DIR/testfile3
 
 pass
diff --git a/src/test/obj_pmalloc_mt/TEST8 b/src/test/obj_pmalloc_mt/TEST8
new file mode 100755
index 00000000000..fc8a6ee3484
--- /dev/null
+++ b/src/test/obj_pmalloc_mt/TEST8
@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright 2023, Intel Corporation
+
+#
+# src/test/obj_pmalloc_mt/TEST8 -- multithreaded allocator test
+#	(short) w/ iterations
+#
+
+. ../unittest/unittest.sh
+
+require_fs_type pmem
+require_test_type short
+
+setup
+
+TEST_FILE_PATH=$DIR/testfile
+
+rm -f $TEST_FILE_PATH
+
+PMEM_IS_PMEM_FORCE=1 expect_normal_exit\
+	./obj_pmalloc_mt$EXESUFFIX 32 1000 100 $TEST_FILE_PATH
+
+rm $TEST_FILE_PATH
+
+PMEM_IS_PMEM_FORCE=1 expect_normal_exit\
+	./obj_pmalloc_mt$EXESUFFIX 32 1000 100 $TEST_FILE_PATH
+
+pass
diff --git a/src/test/obj_pmalloc_mt/err8.log.match b/src/test/obj_pmalloc_mt/err8.log.match
new file mode 100644
index 00000000000..27e8de85bb8
--- /dev/null
+++ b/src/test/obj_pmalloc_mt/err8.log.match
@@ -0,0 +1 @@
+{obj_pmalloc_mt.c:66 realloc_worker} obj_pmalloc_mt/TEST8: Error: assertion failure: ret (0xffffffffffffffff) == 0 (0x0)
diff --git a/src/test/obj_pmalloc_mt/obj_pmalloc_mt.c b/src/test/obj_pmalloc_mt/obj_pmalloc_mt.c
index c356d3a7c8c..4eca2f1844f 100644
--- a/src/test/obj_pmalloc_mt/obj_pmalloc_mt.c
+++ b/src/test/obj_pmalloc_mt/obj_pmalloc_mt.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: BSD-3-Clause
-/* Copyright 2015-2020, Intel Corporation */
+/* Copyright 2015-2023, Intel Corporation */
 
 /*
  * obj_pmalloc_mt.c -- multithreaded test of allocator
@@ -59,9 +59,12 @@ static void *
 realloc_worker(void *arg)
 {
 	struct worker_args *a = arg;
+	int ret;
 
 	for (unsigned i = 0; i < Ops_per_thread; ++i) {
-		prealloc(a->pop, &a->r->offs[a->idx][i], REALLOC_SIZE, 0, 0);
+		ret = prealloc(a->pop, &a->r->offs[a->idx][i],
+							REALLOC_SIZE, 0, 0);
+		UT_ASSERTeq(ret, 0);
 		UT_ASSERTne(a->r->offs[a->idx][i], 0);
 	}
 
@@ -85,6 +88,7 @@ static void *
 mix_worker(void *arg)
 {
 	struct worker_args *a = arg;
+	int ret;
 
 	/*
 	 * The mix scenario is ran twice to increase the chances of run
@@ -92,8 +96,9 @@ mix_worker(void *arg)
 	 */
 	for (unsigned j = 0; j < MIX_RERUNS; ++j) {
 		for (unsigned i = 0; i < Ops_per_thread; ++i) {
-			pmalloc(a->pop, &a->r->offs[a->idx][i],
+			ret = pmalloc(a->pop, &a->r->offs[a->idx][i],
 				ALLOC_SIZE, 0, 0);
+			UT_ASSERTeq(ret, 0);
 			UT_ASSERTne(a->r->offs[a->idx][i], 0);
 		}
 
@@ -338,7 +343,8 @@ main(int argc, char *argv[])
 
 	if (!exists) {
 		pop = pmemobj_create(argv[4], "TEST", (PMEMOBJ_MIN_POOL) +
-			(MAX_THREADS * CHUNKSIZE * CHUNKS_PER_THREAD),
+			(MAX_THREADS * CHUNKSIZE * CHUNKS_PER_THREAD) +
+			(MAX_THREADS * MAX_OPS_PER_THREAD * REALLOC_SIZE),
 		0666);
 
 		if (pop == NULL)
diff --git a/utils/docker/run-build.sh b/utils/docker/run-build.sh
index 1426bb77d64..152f15cec53 100755
--- a/utils/docker/run-build.sh
+++ b/utils/docker/run-build.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # SPDX-License-Identifier: BSD-3-Clause
-# Copyright 2016-2022, Intel Corporation
+# Copyright 2016-2023, Intel Corporation
 
 #
 # run-build.sh - is called inside a Docker container; prepares the environment
@@ -27,11 +27,11 @@ make -j$(nproc) test
 echo ""
 echo "## Running make pcheck"
 # do not change -j2 to -j$(nproc) in case of tests (make check/pycheck)
-make -j2 pcheck TEST_BUILD=$TEST_BUILD
+make -j1 pcheck TEST_BUILD=$TEST_BUILD
 echo ""
 echo "## Running make pycheck"
 # do not change -j2 to -j$(nproc) in case of tests (make check/pycheck)
-make -j2 pycheck
+make -j1 pycheck
 echo ""
 echo "## Running make source"
 make -j$(nproc) DESTDIR=/tmp source