Commit d1a2627a authored by Inaky Perez-Gonzalez's avatar Inaky Perez-Gonzalez

wimax: fix oops if netlink fails to add attribute

When sending a message to user space using wimax_msg(), if nla_put()
fails, correctly interpret the return code from wimax_msg_alloc() as
an err ptr and return the error code instead of crashing (as it is
assuming than non-NULL means the pointer is ok).
Signed-off-by: default avatarInaky Perez-Gonzalez <>
parent 356d6c2d
......@@ -149,7 +149,8 @@ struct sk_buff *wimax_msg_alloc(struct wimax_dev *wimax_dev,
result = nla_put(skb, WIMAX_GNL_MSG_DATA, size, msg);
if (result < 0) {
dev_err(dev, "no memory to add payload in attribute\n");
dev_err(dev, "no memory to add payload (msg %p size %zu) in "
"attribute: %d\n", msg, size, result);
goto error_nla_put;
genlmsg_end(skb, genl_msg);
......@@ -299,10 +300,10 @@ int wimax_msg(struct wimax_dev *wimax_dev, const char *pipe_name,
struct sk_buff *skb;
skb = wimax_msg_alloc(wimax_dev, pipe_name, buf, size, gfp_flags);
if (skb == NULL)
goto error_msg_new;
result = wimax_msg_send(wimax_dev, skb);
if (IS_ERR(skb))
result = PTR_ERR(skb);
result = wimax_msg_send(wimax_dev, skb);
return result;
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