[dpdk-dev] [PATCH v2] rte mempool: division or modulo by zero
Slawomir Mrozowicz
slawomirx.mrozowicz at intel.com
Thu May 19 14:36:35 CEST 2016
Fix issue reported by Coverity.
Coverity ID 13243: Division or modulo by zero
In function call rte_mempool_xmem_size, division by expression total_size
which may be zero has undefined behavior.
Fixes: 148f963fb532 ("xen: core library changes")
Signed-off-by: Slawomir Mrozowicz <slawomirx.mrozowicz at intel.com>
---
lib/librte_mempool/rte_mempool.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/lib/librte_mempool/rte_mempool.c b/lib/librte_mempool/rte_mempool.c
index 1ab6701..b54de43 100644
--- a/lib/librte_mempool/rte_mempool.c
+++ b/lib/librte_mempool/rte_mempool.c
@@ -239,6 +239,9 @@ rte_mempool_xmem_size(uint32_t elt_num, size_t total_elt_sz, uint32_t pg_shift)
{
size_t obj_per_page, pg_num, pg_sz;
+ if (total_elt_sz == 0)
+ return 0;
+
if (pg_shift == 0)
return total_elt_sz * elt_num;
--
1.9.1
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