From: Corey Minyard Date: Fri, 16 Nov 2018 15:55:47 +0000 (-0600) Subject: ipmi: Fix return value when a message is truncated X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=95ac0daa0ca98ad8ac23769021144f8bf04cf406;p=linux.git ipmi: Fix return value when a message is truncated The user can ask the message to be returned even if it didn't supply enough memory for the data, and it will return an error but still fills in as much data as possible. However, the return value wasn't being set to an error, it was being overwritten. Create a second return value for that case. Signed-off-by: Corey Minyard --- diff --git a/drivers/char/ipmi/ipmi_devintf.c b/drivers/char/ipmi/ipmi_devintf.c index effab11887cab..99c9f581a1f3c 100644 --- a/drivers/char/ipmi/ipmi_devintf.c +++ b/drivers/char/ipmi/ipmi_devintf.c @@ -207,7 +207,7 @@ static int handle_recv(struct ipmi_file_private *priv, struct list_head *entry; struct ipmi_recv_msg *msg; unsigned long flags; - int rv = 0; + int rv = 0, rv2 = 0; /* We claim a mutex because we don't want two users getting something from the queue at a time. @@ -250,7 +250,7 @@ static int handle_recv(struct ipmi_file_private *priv, if (msg->msg.data_len > 0) { if (rsp->msg.data_len < msg->msg.data_len) { - rv = -EMSGSIZE; + rv2 = -EMSGSIZE; if (trunc) msg->msg.data_len = rsp->msg.data_len; else @@ -274,7 +274,7 @@ static int handle_recv(struct ipmi_file_private *priv, mutex_unlock(&priv->recv_mutex); ipmi_free_recv_msg(msg); - return 0; + return rv2; recv_putback_on_err: /* If we got an error, put the message back onto