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https://issues.apache.org/jira/browse/GUACAMOLE-429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16732629#comment-16732629
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James He commented on GUACAMOLE-429:
------------------------------------
Just tried in a virtual machine running ubuntu and guacamole 0.9.14. I cannot
make more than 70 RDP connections on it. Maybe there is not enough memory or
so. If we cannot find any clue with the stack info in this bug, we may close it
for now.
> RDP may join on invalid thread during disconnect
> ------------------------------------------------
>
> Key: GUACAMOLE-429
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-429
> Project: Guacamole
> Issue Type: Bug
> Components: RDP
> Affects Versions: 0.9.12-incubating
> Environment: GNU Linux x86_64
> Reporter: James He
> Priority: Minor
>
> Open 100 RDP connections at the same time with the below python script on
> Windows.
> {code:none}
> import webbrowser
> for i in range(100):
>
> webbrowser.open_new_tab('http://10.148.38.170:8080/guacamole-0.9.13-incubating/#/client/cmRwAGMAZGVmYXVsdA==')
> {code}
> Some connections disconnected and observed the below core dump of guacd.
> {code:none}
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0 pthread_join (threadid=0, thread_return=0x0) at pthread_join.c:47
> 47 pthread_join.c: No such file or directory.
> (gdb) bt
> #0 pthread_join (threadid=0, thread_return=0x0) at pthread_join.c:47
> #1 0x00002aaaafb6826c in guac_rdp_client_free_handler
> (client=0x2aaad4007990) at client.c:96
> #2 0x00002aaaaaf45815 in guac_client_free (client=0x2aaad4007990) at
> client.c:193
> #3 0x0000000000404d72 in guacd_exec_proc (proc=0x2aaad4007970,
> protocol=0x2aaad400bda3 "rdp") at proc.c:191
> #4 0x0000000000404f3e in guacd_create_proc (protocol=0x2aaad400bda3 "rdp")
> at proc.c:253
> #5 0x0000000000403bb8 in guacd_route_connection (map=0x2aaaaaad7010,
> socket=0x2aaad4005890)
> at connection.c:299
> #6 0x0000000000403dc0 in guacd_connection_thread (data=0xe12b10) at
> connection.c:394
> #7 0x00002aaaab8521a4 in start_thread (arg=0x2aab0a023700) at
> pthread_create.c:309
> #8 0x00002aaaabd5965d in clone () from /lib64/libc.so.6
> (gdb) frame 1
> #1 0x00002aaaafb6826c in guac_rdp_client_free_handler
> (client=0x2aaad4007990) at client.c:96
> 96 pthread_join(rdp_client->client_thread, NULL);
> (gdb) p rdp_client->client_thread
> $5 = 0
> {code}
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