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Posted to issues@guacamole.apache.org by "Michael Jumper (JIRA)" <ji...@apache.org> on 2019/03/29 07:18:00 UTC
[jira] [Closed] (GUACAMOLE-767) Guacd running in container may not
terminate and start consuming CPU
[ https://issues.apache.org/jira/browse/GUACAMOLE-767?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael Jumper closed GUACAMOLE-767.
------------------------------------
Resolution: Invalid
> Guacd running in container may not terminate and start consuming CPU
> --------------------------------------------------------------------
>
> Key: GUACAMOLE-767
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-767
> Project: Guacamole
> Issue Type: Bug
> Components: guacamole
> Affects Versions: 1.0.0
> Reporter: Constantin M
> Priority: Major
>
> A guacd process may drop the connection to the rdp server and stay around consuming CPU.
> The rdp is the xrdp v0.9.9 [https://github.com/neutrinolabs/xrdp/releases]
> This happens when the guacd is running in a docker container [https://hub.docker.com/r/guacamole/guacd/] 1.0.0
> In this case the connection to the guacamole client enters in a CLOSE_WAIT state.
> The parent guacd process starts writing WaitForSingleObject: unknown handle type, but is able to accept new clients.
> A backtrace of the hanging process looks like:
>
> {{Thread 6 (Thread 0x7f7c35b78700 (LWP 953)):}}
> {{#0 0x00007f7c48684603 in select () at ../sysdeps/unix/syscall-template.S:84}}
> {{#1 0x00007f7c3cfe1f33 in WaitForSingleObject () from /usr/lib/x86_64-linux-gnu/libwinpr-synch.so.0.1}}
> {{#2 0x00007f7c3d3f2352 in MessageQueue_Wait () from /usr/lib/x86_64-linux-gnu/libwinpr-utils.so.0.1}}
> {{#3 0x00007f7c3fbd789f in ?? () from /usr/lib/x86_64-linux-gnu/libfreerdp-utils.so.1.1}}
> {{#4 0x00007f7c494bc4a4 in start_thread (arg=0x7f7c35b78700) at pthread_create.c:456}}
> {{#5 0x00007f7c4868bd0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97}}
> {{Thread 5 (Thread 0x7f7c36379700 (LWP 952)):}}
> {{#0 0x00007f7c48684603 in select () at ../sysdeps/unix/syscall-template.S:84}}
> {{#1 0x00007f7c3cfe1f33 in WaitForSingleObject () from /usr/lib/x86_64-linux-gnu/libwinpr-synch.so.0.1}}
> {{#2 0x00007f7c3d3f2352 in MessageQueue_Wait () from /usr/lib/x86_64-linux-gnu/libwinpr-utils.so.0.1}}
> {{#3 0x00007f7c3fbd789f in ?? () from /usr/lib/x86_64-linux-gnu/libfreerdp-utils.so.1.1}}
> {{#4 0x00007f7c494bc4a4 in start_thread (arg=0x7f7c36379700) at pthread_create.c:456}}
> {{#5 0x00007f7c4868bd0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97}}
> {{Thread 4 (Thread 0x7f7c376d4700 (LWP 951)):}}
> {{#0 __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135}}
> {{#1 0x00007f7c494bec26 in __GI___pthread_mutex_lock (mutex=0x7f7c4001cec8) at ../nptl/pthread_mutex_lock.c:115}}
> {{#2 0x00007f7c444c37da in guac_rdp_user_mouse_handler (user=0x7f7c38002ad0, x=1051, y=641, mask=0) at input.c:41}}
> {{#3 0x00007f7c4a09792e in __guac_handle_mouse (user=0x7f7c38002ad0, argc=3, argv=0x7f7c38004a20) at user-handlers.c:142}}
> {{#4 0x00007f7c4a096fd4 in guac_user_handle_instruction (user=0x7f7c38002ad0, opcode=0x7f7c3800632f "mouse", argc=3, argv=0x7f7c38004a20) at user.c:178}}
> {{#5 0x00007f7c4a0987c0 in guac_user_input_thread (data=0x7f7c44eedd10) at user-handshake.c:222}}
> {{#6 0x00007f7c494bc4a4 in start_thread (arg=0x7f7c376d4700) at pthread_create.c:456}}
> {{#7 0x00007f7c4868bd0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97}}
> {{Thread 3 (Thread 0x7f7c456ef700 (LWP 950)):}}
> {{#0 0x00007f7c4867e92d in read () at ../sysdeps/unix/syscall-template.S:84}}
> {{#1 0x00007f7c4868bfde in eventfd_read (fd=<optimized out>, value=<optimized out>) at ../sysdeps/unix/sysv/linux/eventfd_read.c:26}}
> {{#2 0x00007f7c3cfe1725 in ResetEvent () from /usr/lib/x86_64-linux-gnu/libwinpr-synch.so.0.1}}
> {{#3 0x00007f7c4427bd59 in transport_check_fds () from /usr/lib/x86_64-linux-gnu/libfreerdp-core.so.1.1}}
> {{#4 0x00007f7c4426c407 in freerdp_check_fds () from /usr/lib/x86_64-linux-gnu/libfreerdp-core.so.1.1}}
> {{#5 0x00007f7c444c52b2 in guac_rdp_handle_connection (client=0x7f7c4000b010) at rdp.c:768}}
> {{#6 0x00007f7c444c58ff in guac_rdp_client_thread (data=0x7f7c4000b010) at rdp.c:1013}}
> {{#7 0x00007f7c494bc4a4 in start_thread (arg=0x7f7c456ef700) at pthread_create.c:456}}
> {{#8 0x00007f7c4868bd0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97}}
> {{Thread 2 (Thread 0x7f7c44eee700 (LWP 949)):}}
> {{#0 0x00007f7c494bd6dd in pthread_join (threadid=140171482580736, thread_return=0x0) at pthread_join.c:90}}
> {{#1 0x00007f7c4a0988c4 in guac_user_start (parser=0x7f7c380049f0, user=0x7f7c38002ad0, usec_timeout=15000000) at user-handshake.c:278}}
> {{#2 0x00007f7c4a098d37 in guac_user_handle_connection (user=0x7f7c38002ad0, usec_timeout=15000000) at user-handshake.c:417}}
> {{#3 0x0000558b4027979f in guacd_user_thread (data=0x7f7c400297a0) at proc.c:98}}
> {{#4 0x00007f7c494bc4a4 in start_thread (arg=0x7f7c44eee700) at pthread_create.c:456}}
> {{#5 0x00007f7c4868bd0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97}}
> {{Thread 1 (Thread 0x7f7c45ef0700 (LWP 946)):}}
> {{#0 0x00007f7c494c5e10 in __libc_recvmsg (fd=8, msg=0x7f7c45eefc60, flags=0) at ../sysdeps/unix/sysv/linux/recvmsg.c:28}}
> {{#1 0x0000558b40279683 in guacd_recv_fd (sock=8) at move-fd.c:86}}
> {{#2 0x0000558b40279b03 in guacd_exec_proc (proc=0x7f7c4000aff0, protocol=0x7f7c4000c113 "rdp") at proc.c:335}}
> {{#3 0x0000558b40279dba in guacd_create_proc (protocol=0x7f7c4000c113 "rdp") at proc.c:441}}
> {{#4 0x0000558b402786b8 in guacd_route_connection (map=0x7f7c4a3aa010, socket=0x7f7c4000af10) at connection.c:298}}
> {{#5 0x0000558b402788ca in guacd_connection_thread (data=0x558b41c3b3f0) at connection.c:393}}
> {{#6 0x00007f7c494bc4a4 in start_thread (arg=0x7f7c45ef0700) at pthread_create.c:456}}
>
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