[dpdk-dev] [PATCH] fbarray: fix fbarray destruction

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

Currently, when fbarray is destroyed, the fbarray structure is not
zeroed out, which leads to stale data being there and confusing
secondary process init in legacy mem mode. Fix it by always
memsetting the fbarray to zero when destroying it.

Fixes: 5b61c62cfd76 ("fbarray: add internal tailq for mapped areas")
Cc: stable@dpdk.org

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
 lib/librte_eal/common/eal_common_fbarray.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/librte_eal/common/eal_common_fbarray.c b/lib/librte_eal/common/eal_common_fbarray.c
index b7ddb66e9..1312f936b 100644
--- a/lib/librte_eal/common/eal_common_fbarray.c
+++ b/lib/librte_eal/common/eal_common_fbarray.c
@@ -1055,6 +1055,9 @@ rte_fbarray_destroy(struct rte_fbarray *arr)
 	TAILQ_REMOVE(&mem_area_tailq, tmp, next);
 	free(tmp);
 	ret = 0;
+
+	/* reset the fbarray structure */
+	memset(arr, 0, sizeof(*arr));
 out:
 	rte_spinlock_unlock(&mem_area_lock);
 	return ret;
-- 
2.17.1