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https://issues.apache.org/jira/browse/GUACAMOLE-86?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15448158#comment-15448158
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Nischay Rathor commented on GUACAMOLE-86:
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Hi [~mike.jumper], I tried to collect GDB dump for guacd process as you
mentioned. I tried it many times. Refer shared link. Below are my observation.
1. Every time I executed tree / from ui (it dumps approx. 15mb of output to
stdout). Guacd crashes in first or second attempt.
2. I observe only 2 traps messages in dmesg.
{noformat}
[Tue Aug 30 05:14:17 2016] traps: guacd[26841] general protection
ip:7fe7bc0e61df sp:7fe7b48c6c78 error:0 in
libguac-client-ssh.so.0.0.0[7fe7bc0d3000+1c000]
[Tue Aug 30 05:40:36 2016] traps: guacd[28984] general protection
ip:7f506858524c sp:7f5061102120 error:0 in libc-2.17.so[7f5068505000+1b7000]
{noformat}
https://dl.dropboxusercontent.com/u/12181164/guacd-gdb-dump.txt
> Connection closed when printing large content in SSH
> ----------------------------------------------------
>
> Key: GUACAMOLE-86
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-86
> Project: Guacamole
> Issue Type: Bug
> Components: guacd
> Affects Versions: 0.9.9
> Reporter: Nischay Rathor
> Priority: Critical
>
> Guacd is crashing when running commands with big output on stdout from web ui
> {noformat}
> Aug 25 07:10:34 ip-10-0-9-145 guacd[27432]: SSH connection successful.
> Aug 25 07:10:56 ip-10-0-9-145 server: 07:10:56.646 [Thread-5] ERROR
> o.g.g.w.GuacamoleWebSocketTunnelEndpoint - Connection to guacd terminated
> abnormally: Connection to guacd timed out.
> Aug 25 07:10:56 ip-10-0-9-145 server: 07:10:56.646 [Thread-5] DEBUG
> o.g.g.w.GuacamoleWebSocketTunnelEndpoint - Internal error during connection
> to guacd.
> Aug 25 07:10:56 ip-10-0-9-145 server:
> org.glyptodon.guacamole.GuacamoleUpstreamTimeoutException: Connection to
> guacd timed out.
> Aug 25 07:10:56 ip-10-0-9-145 server: 07:10:56.653 [Thread-5] DEBUG
> o.g.g.net.InetGuacamoleSocket - Closing socket to guacd.
> Aug 25 07:11:13 ip-10-0-9-145 server: 07:11:13.025
> [http-bio-127.0.0.1-8080-exec-5] DEBUG o.g.g.net.InetGuacamoleSocket -
> Connecting to guacd at localhost:4822.
> Wed Aug 24 19:05:37 2016] traps: guacd[29476] general protection
> ip:7f288455a24c sp:7f2874e53120 error:0 in libc-2.17.so[7f28844da000+1b7000]
> tree /
> rw-rr- 1 root root 20M Aug 25 06:20 demo.txt
> {noformat}
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