[dpdk-dev] [PATCH 4/4] fbarray: handle negative return

[Anatoly Burakov]

sysconf() may return a negative value, check for it.

Coverity issue: 272586

Fixes: c44d09811b40 ("eal: add shared indexed file-backed array")
Cc: anatoly.burakov at intel.com

Signed-off-by: Anatoly Burakov <anatoly.burakov at 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 c4ed97e..6486679 100644
--- a/lib/librte_eal/common/eal_common_fbarray.c
+++ b/lib/librte_eal/common/eal_common_fbarray.c
@@ -561,6 +561,9 @@ rte_fbarray_detach(struct rte_fbarray *arr)
 
 	size_t page_sz = sysconf(_SC_PAGESIZE);
 
+	if (page_sz == (size_t)-1)
+		return -1;
+
 	/* this may already be unmapped (e.g. repeated call from previously
 	 * failed destroy(), but this is on user, we can't (easily) know if this
 	 * is still mapped.
-- 
2.7.4