Open Radar

 
Summary:
Using ssh-add -s <anything*> will spawn endless amounts of ssh-pkcs11-helper processes, which makes MacOSX slow because of resource exhaustion.

(* = with anything, I mean that the file doesn't even need to exist)

Steps to Reproduce:
1. open a terminal window, and run "ssh-agent -s" 
2. now run ssh-add -s <a pkcs11 library (or whatever)>
3. write in correct or incorrect PIN:
"Enter passphrase for PKCS#11:"
SSH_AGENT_FAILURE
Could not add card: /Library/OpenSC/lib/opensc-pkcs11.so

You'll find more details here:
https://github.com/OpenSC/OpenSC/issues/354#issuecomment-70370070

Expected Results:
ssh-add -s <pkcs11lib> should with the correct PIN add my private key to the ssh-agent.

Actual Results:
Check out "ps -ef" and you'll see endless amounts of ssh-pkcs11-helper processes.
The system becomes unusable because of resource exhaustion caused by all ssh-pkcs11-helper that keeps spawning.


Version:
10.10.2 (14C99d)

Notes:
This blog also mentions the problem:
http://sigg-iten.ch/learningbits/2014/11/13/first-steps-with-the-feitian-epass2003-smart-token-in-os-x/

Configuration:
It always occurs, there are no exceptions