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Upgrade to 4.4.50-rt62
[kvmfornfv.git] / kernel / block / blk-map.c
diff --git a/kernel/block/blk-map.c b/kernel/block/blk-map.c
index f565e11..69953bd 100644 (file)
--- 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;