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-rw-r--r--kernel/block/blk-map.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/block/blk-map.c b/kernel/block/blk-map.c
index f565e11f4..69953bd97 100644
--- a/kernel/block/blk-map.c
+++ b/kernel/block/blk-map.c
@@ -90,6 +90,9 @@ int blk_rq_map_user_iov(struct request_queue *q, struct request *rq,
if (!iter || !iter->count)
return -EINVAL;
+ if (!iter_is_iovec(iter))
+ return -EINVAL;
+
iov_for_each(iov, i, *iter) {
unsigned long uaddr = (unsigned long) iov.iov_base;