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net/9p: Return error on read with NULL buffer
[pandora-kernel.git]
/
net
/
9p
/
client.c
diff --git
a/net/9p/client.c
b/net/9p/client.c
index
8df80fb
..
a848bca
100644
(file)
--- a/
net/9p/client.c
+++ b/
net/9p/client.c
@@
-1286,16
+1286,13
@@
p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset,
if (data) {
memmove(data, dataptr, count);
- }
-
- if (udata) {
+ } else {
err = copy_to_user(udata, dataptr, count);
if (err) {
err = -EFAULT;
goto free_and_error;
}
}
-
p9_free_req(clnt, req);
return count;