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-rw-r--r--include/rdma/ib_verbs.h11
1 files changed, 3 insertions, 8 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 8e90dd28bb75..e1f96737c2a1 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2115,22 +2115,17 @@ static inline bool ib_is_udata_cleared(struct ib_udata *udata,
size_t len)
{
const void __user *p = udata->inbuf + offset;
- bool ret = false;
+ bool ret;
u8 *buf;
if (len > USHRT_MAX)
return false;
- buf = kmalloc(len, GFP_KERNEL);
- if (!buf)
+ buf = memdup_user(p, len);
+ if (IS_ERR(buf))
return false;
- if (copy_from_user(buf, p, len))
- goto free;
-
ret = !memchr_inv(buf, 0, len);
-
-free:
kfree(buf);
return ret;
}