[Bug 2573] dead sessions cannot be closed with ~.

[bugzilla-daemon at bugzilla.mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=2573

--- Comment #5 from Darren Tucker <dtucker at zip.com.au> ---
A suggestion for a possible reproduction case: find the sshd handling a
given connection on the server and kill -STOP it.

Note that ~ is only recognised after a carriage return, are you always
hitting enter before ~?

Thinking about it, if the input channel buffer was full that might stop
ssh reading input and thus processing escapes.  What kind of activity
were you doing in the cases where you observed it?

Also, if you do happen to observe it, stracing the hung ssh might help.
(i'd expect it to be blocked in select() but I could be wrong).

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