[dpdk-dev] [PATCH v3 2/2] test/memzone: handle previously allocated memzones

[Anatoly Burakov <anatoly.burakov@intel.com>]

Currently, memzone autotest expects there to be no memzones
present by the time the test is run. Some hardware drivers
will allocate memzones for internal use during initialization,
resulting in tests failing due to unexpected memzones being
allocated before the test was run.

Fix this by making sure all memzones allocated by this test
have a common prefix, and making callback increment a counter
on encountering memzones with this prefix. Also, separately
increment another counter that will count total number of
memzones left after test, and compares it to previously stored
number of memzones, to ensure that we didn't accidentally
allocated/freed any memzones we weren't supposed to. This
also doubles as a test for correct operation of memzone_walk().

Fixes: 71330483a193 ("test/memzone: fix memory leak")
Cc: radoslaw.biernacki@linaro.org
Cc: stable@dpdk.org

Signed-off-by: Phil Yang <Phil.Yang@arm.com>
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---

Notes:
    v3: suggested-by was supposed to be a signoff
    
    v2: incorporated Phil Yang's patch to better ensure
        no memzones were left behind by the test

 test/test/test_memzone.c | 225 +++++++++++++++++++++++++++++------------------
 1 file changed, 140 insertions(+), 85 deletions(-)

diff --git a/test/test/test_memzone.c b/test/test/test_memzone.c
index 00d340f..8ece1ac 100644
--- a/test/test/test_memzone.c
+++ b/test/test/test_memzone.c
@@ -4,6 +4,7 @@
 
 #include <stdio.h>
 #include <stdint.h>
+#include <string.h>
 #include <inttypes.h>
 #include <sys/queue.h>
 
@@ -47,6 +48,8 @@
  * - Check flags for specific huge page size reservation
  */
 
+#define TEST_MEMZONE_NAME(suffix) "MZ_TEST_" suffix
+
 /* Test if memory overlaps: return 1 if true, or 0 if false. */
 static int
 is_memory_overlap(rte_iova_t ptr1, size_t len1, rte_iova_t ptr2, size_t len2)
@@ -63,14 +66,14 @@ test_memzone_invalid_alignment(void)
 {
 	const struct rte_memzone * mz;
 
-	mz = rte_memzone_lookup("invalid_alignment");
+	mz = rte_memzone_lookup(TEST_MEMZONE_NAME("invalid_alignment"));
 	if (mz != NULL) {
 		printf("Zone with invalid alignment has been reserved\n");
 		return -1;
 	}
 
-	mz = rte_memzone_reserve_aligned("invalid_alignment", 100,
-			SOCKET_ID_ANY, 0, 100);
+	mz = rte_memzone_reserve_aligned(TEST_MEMZONE_NAME("invalid_alignment"),
+					 100, SOCKET_ID_ANY, 0, 100);
 	if (mz != NULL) {
 		printf("Zone with invalid alignment has been reserved\n");
 		return -1;
@@ -83,14 +86,16 @@ test_memzone_reserving_zone_size_bigger_than_the_maximum(void)
 {
 	const struct rte_memzone * mz;
 
-	mz = rte_memzone_lookup("zone_size_bigger_than_the_maximum");
+	mz = rte_memzone_lookup(
+			TEST_MEMZONE_NAME("zone_size_bigger_than_the_maximum"));
 	if (mz != NULL) {
 		printf("zone_size_bigger_than_the_maximum has been reserved\n");
 		return -1;
 	}
 
-	mz = rte_memzone_reserve("zone_size_bigger_than_the_maximum", (size_t)-1,
-			SOCKET_ID_ANY, 0);
+	mz = rte_memzone_reserve(
+			TEST_MEMZONE_NAME("zone_size_bigger_than_the_maximum"),
+			(size_t)-1, SOCKET_ID_ANY, 0);
 	if (mz != NULL) {
 		printf("It is impossible to reserve such big a memzone\n");
 		return -1;
@@ -137,8 +142,8 @@ test_memzone_reserve_flags(void)
 	 * available page size (i.e 1GB ) when 2MB pages are unavailable.
 	 */
 	if (hugepage_2MB_avail) {
-		mz = rte_memzone_reserve("flag_zone_2M", size, SOCKET_ID_ANY,
-				RTE_MEMZONE_2MB);
+		mz = rte_memzone_reserve(TEST_MEMZONE_NAME("flag_zone_2M"),
+				size, SOCKET_ID_ANY, RTE_MEMZONE_2MB);
 		if (mz == NULL) {
 			printf("MEMZONE FLAG 2MB\n");
 			return -1;
@@ -152,7 +157,8 @@ test_memzone_reserve_flags(void)
 			return -1;
 		}
 
-		mz = rte_memzone_reserve("flag_zone_2M_HINT", size, SOCKET_ID_ANY,
+		mz = rte_memzone_reserve(TEST_MEMZONE_NAME("flag_zone_2M_HINT"),
+				size, SOCKET_ID_ANY,
 				RTE_MEMZONE_2MB|RTE_MEMZONE_SIZE_HINT_ONLY);
 		if (mz == NULL) {
 			printf("MEMZONE FLAG 2MB\n");
@@ -171,7 +177,9 @@ test_memzone_reserve_flags(void)
 		 * HINT flag is indicated
 		 */
 		if (!hugepage_1GB_avail) {
-			mz = rte_memzone_reserve("flag_zone_1G_HINT", size, SOCKET_ID_ANY,
+			mz = rte_memzone_reserve(
+					TEST_MEMZONE_NAME("flag_zone_1G_HINT"),
+					size, SOCKET_ID_ANY,
 					RTE_MEMZONE_1GB|RTE_MEMZONE_SIZE_HINT_ONLY);
 			if (mz == NULL) {
 				printf("MEMZONE FLAG 1GB & HINT\n");
@@ -186,8 +194,9 @@ test_memzone_reserve_flags(void)
 				return -1;
 			}
 
-			mz = rte_memzone_reserve("flag_zone_1G", size, SOCKET_ID_ANY,
-					RTE_MEMZONE_1GB);
+			mz = rte_memzone_reserve(
+					TEST_MEMZONE_NAME("flag_zone_1G"), size,
+					SOCKET_ID_ANY, RTE_MEMZONE_1GB);
 			if (mz != NULL) {
 				printf("MEMZONE FLAG 1GB\n");
 				return -1;
@@ -197,8 +206,8 @@ test_memzone_reserve_flags(void)
 
 	/*As with 2MB tests above for 1GB huge page requests*/
 	if (hugepage_1GB_avail) {
-		mz = rte_memzone_reserve("flag_zone_1G", size, SOCKET_ID_ANY,
-				RTE_MEMZONE_1GB);
+		mz = rte_memzone_reserve(TEST_MEMZONE_NAME("flag_zone_1G"),
+				size, SOCKET_ID_ANY, RTE_MEMZONE_1GB);
 		if (mz == NULL) {
 			printf("MEMZONE FLAG 1GB\n");
 			return -1;
@@ -212,7 +221,8 @@ test_memzone_reserve_flags(void)
 			return -1;
 		}
 
-		mz = rte_memzone_reserve("flag_zone_1G_HINT", size, SOCKET_ID_ANY,
+		mz = rte_memzone_reserve(TEST_MEMZONE_NAME("flag_zone_1G_HINT"),
+				size, SOCKET_ID_ANY,
 				RTE_MEMZONE_1GB|RTE_MEMZONE_SIZE_HINT_ONLY);
 		if (mz == NULL) {
 			printf("MEMZONE FLAG 1GB\n");
@@ -231,7 +241,9 @@ test_memzone_reserve_flags(void)
 		 * HINT flag is indicated
 		 */
 		if (!hugepage_2MB_avail) {
-			mz = rte_memzone_reserve("flag_zone_2M_HINT", size, SOCKET_ID_ANY,
+			mz = rte_memzone_reserve(
+					TEST_MEMZONE_NAME("flag_zone_2M_HINT"),
+					size, SOCKET_ID_ANY,
 					RTE_MEMZONE_2MB|RTE_MEMZONE_SIZE_HINT_ONLY);
 			if (mz == NULL){
 				printf("MEMZONE FLAG 2MB & HINT\n");
@@ -245,8 +257,9 @@ test_memzone_reserve_flags(void)
 				printf("Fail memzone free\n");
 				return -1;
 			}
-			mz = rte_memzone_reserve("flag_zone_2M", size, SOCKET_ID_ANY,
-					RTE_MEMZONE_2MB);
+			mz = rte_memzone_reserve(
+					TEST_MEMZONE_NAME("flag_zone_2M"), size,
+					SOCKET_ID_ANY, RTE_MEMZONE_2MB);
 			if (mz != NULL) {
 				printf("MEMZONE FLAG 2MB\n");
 				return -1;
@@ -254,8 +267,10 @@ test_memzone_reserve_flags(void)
 		}
 
 		if (hugepage_2MB_avail && hugepage_1GB_avail) {
-			mz = rte_memzone_reserve("flag_zone_2M_HINT", size, SOCKET_ID_ANY,
-								RTE_MEMZONE_2MB|RTE_MEMZONE_1GB);
+			mz = rte_memzone_reserve(
+					TEST_MEMZONE_NAME("flag_zone_2M_HINT"),
+					size, SOCKET_ID_ANY,
+					RTE_MEMZONE_2MB|RTE_MEMZONE_1GB);
 			if (mz == NULL) {
 				printf("BOTH SIZES SET\n");
 				return -1;
@@ -279,8 +294,8 @@ test_memzone_reserve_flags(void)
 	 * page size (i.e 16GB ) when 16MB pages are unavailable.
 	 */
 	if (hugepage_16MB_avail) {
-		mz = rte_memzone_reserve("flag_zone_16M", size, SOCKET_ID_ANY,
-				RTE_MEMZONE_16MB);
+		mz = rte_memzone_reserve(TEST_MEMZONE_NAME("flag_zone_16M"),
+				size, SOCKET_ID_ANY, RTE_MEMZONE_16MB);
 		if (mz == NULL) {
 			printf("MEMZONE FLAG 16MB\n");
 			return -1;
@@ -294,8 +309,10 @@ test_memzone_reserve_flags(void)
 			return -1;
 		}
 
-		mz = rte_memzone_reserve("flag_zone_16M_HINT", size,
-		SOCKET_ID_ANY, RTE_MEMZONE_16MB|RTE_MEMZONE_SIZE_HINT_ONLY);
+		mz = rte_memzone_reserve(
+				TEST_MEMZONE_NAME("flag_zone_16M_HINT"), size,
+				SOCKET_ID_ANY,
+				RTE_MEMZONE_16MB|RTE_MEMZONE_SIZE_HINT_ONLY);
 		if (mz == NULL) {
 			printf("MEMZONE FLAG 16MB\n");
 			return -1;
@@ -313,9 +330,11 @@ test_memzone_reserve_flags(void)
 		 * unless HINT flag is indicated
 		 */
 		if (!hugepage_16GB_avail) {
-			mz = rte_memzone_reserve("flag_zone_16G_HINT", size,
-				SOCKET_ID_ANY,
-				RTE_MEMZONE_16GB|RTE_MEMZONE_SIZE_HINT_ONLY);
+			mz = rte_memzone_reserve(
+					TEST_MEMZONE_NAME("flag_zone_16G_HINT"),
+					size, SOCKET_ID_ANY,
+					RTE_MEMZONE_16GB |
+					RTE_MEMZONE_SIZE_HINT_ONLY);
 			if (mz == NULL) {
 				printf("MEMZONE FLAG 16GB & HINT\n");
 				return -1;
@@ -329,8 +348,10 @@ test_memzone_reserve_flags(void)
 				return -1;
 			}
 
-			mz = rte_memzone_reserve("flag_zone_16G", size,
-				SOCKET_ID_ANY, RTE_MEMZONE_16GB);
+			mz = rte_memzone_reserve(
+					TEST_MEMZONE_NAME("flag_zone_16G"),
+					size,
+					SOCKET_ID_ANY, RTE_MEMZONE_16GB);
 			if (mz != NULL) {
 				printf("MEMZONE FLAG 16GB\n");
 				return -1;
@@ -339,8 +360,8 @@ test_memzone_reserve_flags(void)
 	}
 	/*As with 16MB tests above for 16GB huge page requests*/
 	if (hugepage_16GB_avail) {
-		mz = rte_memzone_reserve("flag_zone_16G", size, SOCKET_ID_ANY,
-				RTE_MEMZONE_16GB);
+		mz = rte_memzone_reserve(TEST_MEMZONE_NAME("flag_zone_16G"),
+				size, SOCKET_ID_ANY, RTE_MEMZONE_16GB);
 		if (mz == NULL) {
 			printf("MEMZONE FLAG 16GB\n");
 			return -1;
@@ -354,8 +375,10 @@ test_memzone_reserve_flags(void)
 			return -1;
 		}
 
-		mz = rte_memzone_reserve("flag_zone_16G_HINT", size,
-		SOCKET_ID_ANY, RTE_MEMZONE_16GB|RTE_MEMZONE_SIZE_HINT_ONLY);
+		mz = rte_memzone_reserve(
+				TEST_MEMZONE_NAME("flag_zone_16G_HINT"), size,
+				SOCKET_ID_ANY,
+				RTE_MEMZONE_16GB|RTE_MEMZONE_SIZE_HINT_ONLY);
 		if (mz == NULL) {
 			printf("MEMZONE FLAG 16GB\n");
 			return -1;
@@ -373,9 +396,11 @@ test_memzone_reserve_flags(void)
 		 * unless HINT flag is indicated
 		 */
 		if (!hugepage_16MB_avail) {
-			mz = rte_memzone_reserve("flag_zone_16M_HINT", size,
-				SOCKET_ID_ANY,
-				RTE_MEMZONE_16MB|RTE_MEMZONE_SIZE_HINT_ONLY);
+			mz = rte_memzone_reserve(
+					TEST_MEMZONE_NAME("flag_zone_16M_HINT"),
+					size, SOCKET_ID_ANY,
+					RTE_MEMZONE_16MB |
+					RTE_MEMZONE_SIZE_HINT_ONLY);
 			if (mz == NULL) {
 				printf("MEMZONE FLAG 16MB & HINT\n");
 				return -1;
@@ -388,8 +413,9 @@ test_memzone_reserve_flags(void)
 				printf("Fail memzone free\n");
 				return -1;
 			}
-			mz = rte_memzone_reserve("flag_zone_16M", size,
-				SOCKET_ID_ANY, RTE_MEMZONE_16MB);
+			mz = rte_memzone_reserve(
+					TEST_MEMZONE_NAME("flag_zone_16M"),
+					size, SOCKET_ID_ANY, RTE_MEMZONE_16MB);
 			if (mz != NULL) {
 				printf("MEMZONE FLAG 16MB\n");
 				return -1;
@@ -397,9 +423,10 @@ test_memzone_reserve_flags(void)
 		}
 
 		if (hugepage_16MB_avail && hugepage_16GB_avail) {
-			mz = rte_memzone_reserve("flag_zone_16M_HINT", size,
-				SOCKET_ID_ANY,
-				RTE_MEMZONE_16MB|RTE_MEMZONE_16GB);
+			mz = rte_memzone_reserve(
+					TEST_MEMZONE_NAME("flag_zone_16M_HINT"),
+					size, SOCKET_ID_ANY,
+					RTE_MEMZONE_16MB|RTE_MEMZONE_16GB);
 			if (mz == NULL) {
 				printf("BOTH SIZES SET\n");
 				return -1;
@@ -455,7 +482,8 @@ test_memzone_reserve_max(void)
 		return 0;
 	}
 
-	mz = rte_memzone_reserve("max_zone", 0, SOCKET_ID_ANY, 0);
+	mz = rte_memzone_reserve(TEST_MEMZONE_NAME("max_zone"), 0,
+			SOCKET_ID_ANY, 0);
 	if (mz == NULL){
 		printf("Failed to reserve a big chunk of memory - %s\n",
 				rte_strerror(rte_errno));
@@ -497,8 +525,8 @@ test_memzone_reserve_max_aligned(void)
 		return 0;
 	}
 
-	mz = rte_memzone_reserve_aligned("max_zone_aligned", 0,
-			SOCKET_ID_ANY, 0, align);
+	mz = rte_memzone_reserve_aligned(TEST_MEMZONE_NAME("max_zone_aligned"),
+			0, SOCKET_ID_ANY, 0, align);
 	if (mz == NULL){
 		printf("Failed to reserve a big chunk of memory - %s\n",
 				rte_strerror(rte_errno));
@@ -535,24 +563,29 @@ test_memzone_aligned(void)
 	const struct rte_memzone *memzone_aligned_1024;
 
 	/* memzone that should automatically be adjusted to align on 64 bytes */
-	memzone_aligned_32 = rte_memzone_reserve_aligned("aligned_32", 100,
-				SOCKET_ID_ANY, 0, 32);
+	memzone_aligned_32 = rte_memzone_reserve_aligned(
+			TEST_MEMZONE_NAME("aligned_32"), 100, SOCKET_ID_ANY, 0,
+			32);
 
 	/* memzone that is supposed to be aligned on a 128 byte boundary */
-	memzone_aligned_128 = rte_memzone_reserve_aligned("aligned_128", 100,
-				SOCKET_ID_ANY, 0, 128);
+	memzone_aligned_128 = rte_memzone_reserve_aligned(
+			TEST_MEMZONE_NAME("aligned_128"), 100, SOCKET_ID_ANY, 0,
+			128);
 
 	/* memzone that is supposed to be aligned on a 256 byte boundary */
-	memzone_aligned_256 = rte_memzone_reserve_aligned("aligned_256", 100,
-				SOCKET_ID_ANY, 0, 256);
+	memzone_aligned_256 = rte_memzone_reserve_aligned(
+			TEST_MEMZONE_NAME("aligned_256"), 100, SOCKET_ID_ANY, 0,
+			256);
 
 	/* memzone that is supposed to be aligned on a 512 byte boundary */
-	memzone_aligned_512 = rte_memzone_reserve_aligned("aligned_512", 100,
-				SOCKET_ID_ANY, 0, 512);
+	memzone_aligned_512 = rte_memzone_reserve_aligned(
+			TEST_MEMZONE_NAME("aligned_512"), 100, SOCKET_ID_ANY, 0,
+			512);
 
 	/* memzone that is supposed to be aligned on a 1024 byte boundary */
-	memzone_aligned_1024 = rte_memzone_reserve_aligned("aligned_1024", 100,
-				SOCKET_ID_ANY, 0, 1024);
+	memzone_aligned_1024 = rte_memzone_reserve_aligned(
+			TEST_MEMZONE_NAME("aligned_1024"), 100, SOCKET_ID_ANY,
+			0, 1024);
 
 	printf("check alignments and lengths\n");
 	if (memzone_aligned_32 == NULL) {
@@ -721,37 +754,46 @@ static int
 test_memzone_bounded(void)
 {
 	const struct rte_memzone *memzone_err;
-	const char *name;
 	int rc;
 
 	/* should fail as boundary is not power of two */
-	name = "bounded_error_31";
-	if ((memzone_err = rte_memzone_reserve_bounded(name,
-			100, SOCKET_ID_ANY, 0, 32, UINT32_MAX)) != NULL) {
+	memzone_err = rte_memzone_reserve_bounded(
+			TEST_MEMZONE_NAME("bounded_error_31"), 100,
+			SOCKET_ID_ANY, 0, 32, UINT32_MAX);
+	if (memzone_err != NULL) {
 		printf("%s(%s)created a memzone with invalid boundary "
 			"conditions\n", __func__, memzone_err->name);
 		return -1;
 	}
 
 	/* should fail as len is greater then boundary */
-	name = "bounded_error_32";
-	if ((memzone_err = rte_memzone_reserve_bounded(name,
-			100, SOCKET_ID_ANY, 0, 32, 32)) != NULL) {
+	memzone_err = rte_memzone_reserve_bounded(
+			TEST_MEMZONE_NAME("bounded_error_32"), 100,
+			SOCKET_ID_ANY, 0, 32, 32);
+	if (memzone_err != NULL) {
 		printf("%s(%s)created a memzone with invalid boundary "
 			"conditions\n", __func__, memzone_err->name);
 		return -1;
 	}
 
-	if ((rc = check_memzone_bounded("bounded_128", 100, 128, 128)) != 0)
+	rc = check_memzone_bounded(TEST_MEMZONE_NAME("bounded_128"), 100, 128,
+			128);
+	if (rc != 0)
 		return rc;
 
-	if ((rc = check_memzone_bounded("bounded_256", 100, 256, 128)) != 0)
+	rc = check_memzone_bounded(TEST_MEMZONE_NAME("bounded_256"), 100, 256,
+			128);
+	if (rc != 0)
 		return rc;
 
-	if ((rc = check_memzone_bounded("bounded_1K", 100, 64, 1024)) != 0)
+	rc = check_memzone_bounded(TEST_MEMZONE_NAME("bounded_1K"), 100, 64,
+			1024);
+	if (rc != 0)
 		return rc;
 
-	if ((rc = check_memzone_bounded("bounded_1K_MAX", 0, 64, 1024)) != 0)
+	rc = check_memzone_bounded(TEST_MEMZONE_NAME("bounded_1K_MAX"), 0, 64,
+			1024);
+	if (rc != 0)
 		return rc;
 
 	return 0;
@@ -764,25 +806,28 @@ test_memzone_free(void)
 	int i;
 	char name[20];
 
-	mz[0] = rte_memzone_reserve("tempzone0", 2000, SOCKET_ID_ANY, 0);
-	mz[1] = rte_memzone_reserve("tempzone1", 4000, SOCKET_ID_ANY, 0);
+	mz[0] = rte_memzone_reserve(TEST_MEMZONE_NAME("tempzone0"), 2000,
+			SOCKET_ID_ANY, 0);
+	mz[1] = rte_memzone_reserve(TEST_MEMZONE_NAME("tempzone1"), 4000,
+			SOCKET_ID_ANY, 0);
 
 	if (mz[0] > mz[1])
 		return -1;
-	if (!rte_memzone_lookup("tempzone0"))
+	if (!rte_memzone_lookup(TEST_MEMZONE_NAME("tempzone0")))
 		return -1;
-	if (!rte_memzone_lookup("tempzone1"))
+	if (!rte_memzone_lookup(TEST_MEMZONE_NAME("tempzone1")))
 		return -1;
 
 	if (rte_memzone_free(mz[0])) {
 		printf("Fail memzone free - tempzone0\n");
 		return -1;
 	}
-	if (rte_memzone_lookup("tempzone0")) {
+	if (rte_memzone_lookup(TEST_MEMZONE_NAME("tempzone0"))) {
 		printf("Found previously free memzone - tempzone0\n");
 		return -1;
 	}
-	mz[2] = rte_memzone_reserve("tempzone2", 2000, SOCKET_ID_ANY, 0);
+	mz[2] = rte_memzone_reserve(TEST_MEMZONE_NAME("tempzone2"), 2000,
+			SOCKET_ID_ANY, 0);
 
 	if (mz[2] > mz[1]) {
 		printf("tempzone2 should have gotten the free entry from tempzone0\n");
@@ -792,7 +837,7 @@ test_memzone_free(void)
 		printf("Fail memzone free - tempzone2\n");
 		return -1;
 	}
-	if (rte_memzone_lookup("tempzone2")) {
+	if (rte_memzone_lookup(TEST_MEMZONE_NAME("tempzone2"))) {
 		printf("Found previously free memzone - tempzone2\n");
 		return -1;
 	}
@@ -800,14 +845,15 @@ test_memzone_free(void)
 		printf("Fail memzone free - tempzone1\n");
 		return -1;
 	}
-	if (rte_memzone_lookup("tempzone1")) {
+	if (rte_memzone_lookup(TEST_MEMZONE_NAME("tempzone1"))) {
 		printf("Found previously free memzone - tempzone1\n");
 		return -1;
 	}
 
 	i = 0;
 	do {
-		snprintf(name, sizeof(name), "tempzone%u", i);
+		snprintf(name, sizeof(name), TEST_MEMZONE_NAME("tempzone%u"),
+				i);
 		mz[i] = rte_memzone_reserve(name, 1, SOCKET_ID_ANY, 0);
 	} while (mz[i++] != NULL);
 
@@ -815,7 +861,8 @@ test_memzone_free(void)
 		printf("Fail memzone free - tempzone0\n");
 		return -1;
 	}
-	mz[0] = rte_memzone_reserve("tempzone0new", 0, SOCKET_ID_ANY, 0);
+	mz[0] = rte_memzone_reserve(TEST_MEMZONE_NAME("tempzone0new"), 0,
+			SOCKET_ID_ANY, 0);
 
 	if (mz[0] == NULL) {
 		printf("Fail to create memzone - tempzone0new - when MAX memzones were "
@@ -845,16 +892,16 @@ test_memzone_basic(void)
 	int memzone_cnt_before =
 			rte_eal_get_configuration()->mem_config->memzone_cnt;
 
-	memzone1 = rte_memzone_reserve("testzone1", 100,
+	memzone1 = rte_memzone_reserve(TEST_MEMZONE_NAME("testzone1"), 100,
 				SOCKET_ID_ANY, 0);
 
-	memzone2 = rte_memzone_reserve("testzone2", 1000,
+	memzone2 = rte_memzone_reserve(TEST_MEMZONE_NAME("testzone2"), 1000,
 				0, 0);
 
-	memzone3 = rte_memzone_reserve("testzone3", 1000,
+	memzone3 = rte_memzone_reserve(TEST_MEMZONE_NAME("testzone3"), 1000,
 				1, 0);
 
-	memzone4 = rte_memzone_reserve("testzone4", 1024,
+	memzone4 = rte_memzone_reserve(TEST_MEMZONE_NAME("testzone4"), 1024,
 				SOCKET_ID_ANY, 0);
 
 	/* memzone3 may be NULL if we don't have NUMA */
@@ -918,12 +965,12 @@ test_memzone_basic(void)
 		return -1;
 
 	printf("test zone lookup\n");
-	mz = rte_memzone_lookup("testzone1");
+	mz = rte_memzone_lookup(TEST_MEMZONE_NAME("testzone1"));
 	if (mz != memzone1)
 		return -1;
 
 	printf("test duplcate zone name\n");
-	mz = rte_memzone_reserve("testzone1", 100,
+	mz = rte_memzone_reserve(TEST_MEMZONE_NAME("testzone1"), 100,
 			SOCKET_ID_ANY, 0);
 	if (mz != NULL)
 		return -1;
@@ -953,16 +1000,22 @@ test_memzone_basic(void)
 	return 0;
 }
 
-static int memzone_walk_called;
-static void memzone_walk_clb(const struct rte_memzone *mz __rte_unused,
+static int test_memzones_left;
+static int memzone_walk_cnt;
+static void memzone_walk_clb(const struct rte_memzone *mz,
 			     void *arg __rte_unused)
 {
-	memzone_walk_called = 1;
+	memzone_walk_cnt++;
+	if (!strncmp(TEST_MEMZONE_NAME(""), mz->name, RTE_MEMZONE_NAMESIZE))
+		test_memzones_left++;
 }
 
 static int
 test_memzone(void)
 {
+	/* take note of how many memzones were allocated before running */
+	int memzone_cnt = rte_eal_get_configuration()->mem_config->memzone_cnt;
+
 	printf("test basic memzone API\n");
 	if (test_memzone_basic() < 0)
 		return -1;
@@ -1000,8 +1053,10 @@ test_memzone(void)
 		return -1;
 
 	printf("check memzone cleanup\n");
+	memzone_walk_cnt = 0;
+	test_memzones_left = 0;
 	rte_memzone_walk(memzone_walk_clb, NULL);
-	if (memzone_walk_called) {
+	if (memzone_walk_cnt != memzone_cnt || test_memzones_left > 0) {
 		printf("there are some memzones left after test\n");
 		rte_memzone_dump(stdout);
 		return -1;
-- 
2.7.4