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https://issues.apache.org/jira/browse/GUACAMOLE-950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17033208#comment-17033208
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Toby commented on GUACAMOLE-950:
--------------------------------
I could not run gdb against guacd live as I got timeouts on connect.
I set ulimit to dump cores, and ran the gdb against the core. Output below:
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/local/sbin/guacd -p /var/run/guacd.pid'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x0000000000000000 in ?? ()
[Current thread is 1 (Thread 0x7fdc6f0dc700 (LWP 24601))]
(gdb) bt
#0 0x0000000000000000 in ()
#1 0x00007fdc7b4f8f09 in () at /usr/lib/x86_64-linux-gnu/libfreerdp2.so.2
#2 0x00007fdc7b4f9a12 in () at /usr/lib/x86_64-linux-gnu/libfreerdp2.so.2
#3 0x00007fdc7b4f44b6 in () at /usr/lib/x86_64-linux-gnu/libfreerdp2.so.2
#4 0x00007fdc7b4f5113 in () at /usr/lib/x86_64-linux-gnu/libfreerdp2.so.2
#5 0x00007fdc7b4fd229 in () at /usr/lib/x86_64-linux-gnu/libfreerdp2.so.2
#6 0x00007fdc7b4f55f8 in () at /usr/lib/x86_64-linux-gnu/libfreerdp2.so.2
#7 0x00007fdc7b4e0667 in freerdp_check_fds ()
at /usr/lib/x86_64-linux-gnu/libfreerdp2.so.2
#8 0x00007fdc7b4e1451 in freerdp_check_event_handles ()
at /usr/lib/x86_64-linux-gnu/libfreerdp2.so.2
#9 0x00007fdc7b7d1757 in guac_rdp_handle_connection (client=0x7fdc7400b350)
at rdp.c:428
#10 0x00007fdc7b7d1757 in guac_rdp_client_thread (data=0x7fdc7400b350)
at rdp.c:641
#11 0x00007fdc800726db in start_thread (arg=0x7fdc6f0dc700)
at pthread_create.c:463
#12 0x00007fdc7fb0e88f in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
What else can I provide?
> segfault in guacd
> ------------------
>
> Key: GUACAMOLE-950
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-950
> Project: Guacamole
> Issue Type: Bug
> Components: guacamole-server
> Affects Versions: 1.1.0
> Environment: Guacamole 1.1.0 under Tomcat8 on Ubuntu 18.04, running
> as virtual machine
> Reporter: Toby
> Priority: Minor
> Attachments: trace_connected.txt, trace_segfault.txt
>
>
> Upgraded from 1.0.0 on Ubuntu 16.04 to 1.1.0 on Ubuntu 18.04. Moved from
> Tomcat7 to Tomcat8. Config is largely unchanged.
> Two Windows 10 Enterprise destinations and a third is 2012R2. One of the two
> Windows 10 will cause guacd to segfault on connection. 2012R2 works fine. I
> see a mouse pointer in the upper left very briefly and then I get
> home/reconnect/logout. I have pared the config down to just domain,
> username, password, NLA security, ignore-cert directives for all three
> destinations.
> Uploaded syslog traces, one of a normal connect to the other windows 10
> device, one as the segmentation fault I get when connecting to the other.
> Have also tried rebuilding without webp and websockets to no effect.
> I'm happy to build one for gdb and get a core, but I'll need a little help
> doing that.
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