[jira] [Commented] (GUACAMOLE-429) RDP may join on invalid thread during disconnect

["Nick Couchman (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GUACAMOLE-429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16732087#comment-16732087 ] 

Nick Couchman commented on GUACAMOLE-429:
-----------------------------------------

[~sanhex] Any idea if this issue still occurs in either 0.9.14 or the current code in the git repo?

> 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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