[PATCH v4 01/17] memzone: fix use after free in tracing

[Stephen Hemminger]

Using the freed value for tracing is not a good idea.
Although it is harmless for tracing, it will cause analyzers to flag
this as unsafe.

Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
Acked-by: Chengwen Feng <fengchengwen at huawei.com>
---
 lib/eal/common/eal_common_memzone.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/eal/common/eal_common_memzone.c b/lib/eal/common/eal_common_memzone.c
index 2d9b6aa3e3..90efbb621d 100644
--- a/lib/eal/common/eal_common_memzone.c
+++ b/lib/eal/common/eal_common_memzone.c
@@ -331,9 +331,10 @@ rte_memzone_free(const struct rte_memzone *mz)
 
 	rte_rwlock_write_unlock(&mcfg->mlock);
 
+	rte_eal_trace_memzone_free(name, addr, ret);
+
 	rte_free(addr);
 
-	rte_eal_trace_memzone_free(name, addr, ret);
 	return ret;
 }
 
-- 
2.45.2