[jira] [Created] (GUACAMOLE-384) Guacd crashes in buffer.c during stress test

["Phillip Arcuri (JIRA)" <ji...@apache.org>]

Phillip Arcuri created GUACAMOLE-384:
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             Summary: Guacd crashes in buffer.c during stress test 
                 Key: GUACAMOLE-384
                 URL: https://issues.apache.org/jira/browse/GUACAMOLE-384
             Project: Guacamole
          Issue Type: Bug
          Components: guacd
    Affects Versions: 0.9.12-incubating
         Environment: GNU/Linux x86_64
            Reporter: Phillip Arcuri
            Priority: Blocker


In a stress test we kick off a SSH session every second.  The session does a minimal amount of work and exists after a few seconds.  A ps -ef shows we have 2 to 6 instances running at one time.  About 1 in 10 of the instances cores with corrupted buffer data at line buffer.c:108.:
(gdb) p *buffer
$2 = {default_character = {value = -1269703408, attributes = {bold = 170, reverse = 42, cursor = false, underscore = false, foreground = 0,
      background = 0}, width = -1269422328}, rows = 0x2aaab456fa30, top = 686, length = 0, available = 686}

As an aside I also see roughly 1 in 100 instances become a zombie process hung in pthread_join.  Doubt that is related, but thought I'd mention it.

This is a blocker for our deployment of a guacamole-enabled feature-set.



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