Receive_smb_raw_talloc failed for client

In /var/log/samba/log.smb, messages like the following may appear:

[2014/07/03 10:07:31.103652,  1, pid=32974]../source3/smbd/process.c:481(receive_smb_talloc)  receive_smb_raw_talloc failed for client ipv4: read error =NT_STATUS_CONNECTION_RESET.

This message only says that the opened connection to the client was reset/closed by the client.
You find this string in the /var/log/samba/log.smbd

Without any coincidence of unwished behaviour this is harmless.