diff --git a/module/zfs/spa_config.c b/module/zfs/spa_config.c
index cdeda3f93c..6fc4ad0a88 100644
--- a/module/zfs/spa_config.c
+++ b/module/zfs/spa_config.c
@@ -96,7 +96,7 @@ spa_config_load(void)
 	if (kobj_get_filesize(file, &fsize) != 0)
 		goto out;
 
-	buf = kmem_alloc(fsize, KM_SLEEP);
+	buf = kmem_alloc(fsize, KM_SLEEP | KM_NODEBUG);
 
 	/*
 	 * Read the nvlist from the file.
@@ -159,7 +159,7 @@ spa_config_write(spa_config_dirent_t *dp, nvlist_t *nvl)
 	 */
 	VERIFY(nvlist_size(nvl, &buflen, NV_ENCODE_XDR) == 0);
 
-	buf = kmem_alloc(buflen, KM_SLEEP);
+	buf = kmem_alloc(buflen, KM_SLEEP | KM_NODEBUG);
 	temp = kmem_zalloc(MAXPATHLEN, KM_SLEEP);
 
 	VERIFY(nvlist_pack(nvl, &buf, &buflen, NV_ENCODE_XDR,
diff --git a/module/zfs/spa_misc.c b/module/zfs/spa_misc.c
index 3999bf7032..660f25524b 100644
--- a/module/zfs/spa_misc.c
+++ b/module/zfs/spa_misc.c
@@ -437,7 +437,7 @@ spa_add(const char *name, nvlist_t *config, const char *altroot)
 
 	ASSERT(MUTEX_HELD(&spa_namespace_lock));
 
-	spa = kmem_zalloc(sizeof (spa_t), KM_SLEEP);
+	spa = kmem_zalloc(sizeof (spa_t), KM_SLEEP | KM_NODEBUG);
 
 	mutex_init(&spa->spa_async_lock, NULL, MUTEX_DEFAULT, NULL);
 	mutex_init(&spa->spa_errlist_lock, NULL, MUTEX_DEFAULT, NULL);