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-rw-r--r--lib/scatterlist.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/scatterlist.c b/lib/scatterlist.c
index 129a82f707df..a685c8a79578 100644
--- a/lib/scatterlist.c
+++ b/lib/scatterlist.c
@@ -247,13 +247,15 @@ int __sg_alloc_table(struct sg_table *table, unsigned int nents,
struct scatterlist *sg, *prv;
unsigned int left;
+ memset(table, 0, sizeof(*table));
+
+ if (nents == 0)
+ return -EINVAL;
#ifndef ARCH_HAS_SG_CHAIN
if (WARN_ON_ONCE(nents > max_ents))
return -EINVAL;
#endif
- memset(table, 0, sizeof(*table));
-
left = nents;
prv = NULL;
do {