netdev - [PATCH net-next 2/3] net: Fix memcpy_toiovecend() to use the right offset

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Date:	Fri, 05 Jun 2009 12:35:44 -0700
From:	Sridhar Samudrala <sri@...ibm.com>
To:	davem@...emloft.net, netdev@...r.kernel.org, mst@...hat.com
Subject: [PATCH net-next 2/3] net: Fix memcpy_toiovecend() to use the right
 offset

Increment the iovec base by the offset passed in for the initial
copy_to_user() in memcpy_to_iovecend().

Signed-off-by: Sridhar Samudrala <sri@...ibm.com>

diff --git a/net/core/iovec.c b/net/core/iovec.c
index 40a76ce..16ad45d 100644
--- a/net/core/iovec.c
+++ b/net/core/iovec.c
@@ -112,9 +112,9 @@ int memcpy_toiovecend(const struct iovec *iov, unsigned char *kdata,
 			continue;
 		}
 		copy = min_t(unsigned int, iov->iov_len - offset, len);
-		offset = 0;
-		if (copy_to_user(iov->iov_base, kdata, copy))
+		if (copy_to_user(iov->iov_base + offset, kdata, copy))
 			return -EFAULT;
+		offset = 0;
 		kdata += copy;
 		len -= copy;
 	}




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