On Wed, 26 Aug 2015 11:59:17 -0400
Mike Saal [off-list ref] wrote:

Hi:

I found a formatting bug in the 4.1.1 ss command. The following line was 
incorrectly output due to passing a negative length to printf() when 
displaying the local address. In this instance hostapd does a "bind to 
device" on cdreth0 and then does a udp "in address any" port 67 bind. 
Please note the whitespace between the '*' and ' %cdreth0:67'

    'udp UNCONN 0 0 ** %cdreth0:67* *:* users:(("hostapd",pid=19241,fd=5))'

Attached is my patch for the bug fix, it might be prudent to add more 
guard code looking for negative length format codes.

Sincerely, Mike

I think the root cause of this is actually down in the main program
where it is computing addr_width. It is not accounting for the size correctly,
or maybe your case just occurs if screen is too narrow to fit the full width.