SPARC T3 servers: Oracle Solaris ssh Hangs and System becomes Unresponsive
(Doc ID 1370540.1)
Last updated on APRIL 05, 2018
Applies to:Solaris SPARC Operating System - Version 10 10/08 U6 and later
Oracle Solaris on SPARC (64-bit)
sshd "hangs" and will not accept incoming ssh connections.
The behaviours seen that will point to this problem/solution:
-platform is a Sparc T3 server
-sshd 'hangs' and its processes are unkillable
-following messages are seen in /var/adm/messages: "sshd "monitor fatal: Timeout before authentication for xxx.xxx.xxx.xxx"
-while the sshd hang behaviour is seen, the following command:
will contain output like this:
PC: cv_wait+0x38 CMD: /usr/lib/ssh/sshd
stack pointer for thread 300ab9bc780: 2a10cff0761
[ 000002a10cff0761 cv_wait+0x38() ]
-ssh/sshd debug output will stop in the following places:
(as seen from the client):
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
(as seen from server):
debug3: aes-128-ctr NID found
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