Red Hat Bugzilla – Bug 6104
pty allocation leak
Last modified: 2014-03-16 22:10:35 EDT
Some program is causing a pty leak which leaves the system
in a state that will no longer allow programs like expect,
screen or normal logins via ssh or telnet to function.
I think the problem lies either in "expect" "autoexpect" or
one of it components. For the last week or so I have been
experementing with these tools, and eventually got this
error while running an expect script.
The system has no more ptys. Ask your system administrator
to create more
While executing ftp
(file /home/user/bin/ftp-sync.exp" line x)
I tried cycling init states to 1 and back to 3 to see if
that could help resolve the problem. That did not work.
I asked about this in #linux on efnet, and one other user
mentioned that he gets this error with screen quite often.
Regards - Supaplex
Do you have more than 256 login sessions running?
What does /dev/pts look like - does it have 256 allocated ptys?
I have never used more then 20 ptys on this system. My latest kernel
was compiled for support of 64 ptys in relation to that fact.
The directory below /dev/pts is empty.
What does an strace of an affected program look like?
closed due to lack of feedback.