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IDProjectCategoryView StatusDate SubmittedLast Update
0017075CentOS-8-OTHERpublic2020-02-21 10:322020-02-21 14:16
Reportersmithjs 
PrioritynormalSeveritycrashReproducibilityalways
Status newResolutionopen 
PlatformOS4.18.0-147.3.1.el8_1.x86_64OS Version
Product Version8.1.1911 
Target VersionFixed in Version 
Summary0017075: xrdp-chansrv.coredump
DescriptionConsistant core dump when initializing remote connection via rdp

Using remmina 1.3.10 RDP client - default RDP protocol settings.

Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: (4963)(140636279781184)[INFO ] A connection received from 127.0.0.1 port 57402
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: pam_sss(xrdp-sesman:auth): authentication success; logname= uid=0 euid=0 tty=xrdp-sesman ruser= rhost= user=MYCOMPANY\ME
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: (4963)(140636279781184)[INFO ] ++ created session (access granted): username MYCOMPANY\ME, ip XXX.XXX.XXX.XXX:42558 - socket: 12
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: (4963)(140636279781184)[INFO ] starting Xvnc session...
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: (4963)(140636279781184)[DEBUG] Closed socket 13 (AF_INET 0.0.0.0:5911)
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: (4963)(140636279781184)[DEBUG] Closed socket 13 (AF_INET 0.0.0.0:6011)
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: (4963)(140636279781184)[DEBUG] Closed socket 13 (AF_INET 0.0.0.0:6211)
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: (4963)(140636279781184)[DEBUG] Closed socket 10 (AF_INET 127.0.0.1:3350)
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[7079]: (7079)(140636279781184)[INFO ] calling auth_start_session from pid 7079
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[7079]: pam_unix(xrdp-sesman:session): session opened for user MYCOMPANY\ME by (uid=0)
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[7079]: (7079)(140636279781184)[DEBUG] Closed socket 9 (AF_INET 127.0.0.1:3350)
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[7079]: (7079)(140636279781184)[DEBUG] Closed socket 10 (AF_INET 127.0.0.1:3350)
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: Xvnc TigerVNC 1.9.0 - built Nov 8 2019 23:18:11
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: Copyright (C) 1999-2018 TigerVNC Team and many others (see README.rst)
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: See http://www.tigervnc.org for information on TigerVNC.
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: Underlying X server release 12003000, The X.Org Foundation
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: Fri Feb 21 10:59:19 2020
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: vncext: VNC extension running!
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: vncext: Listening for VNC connections on local interface(s), port 5911
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: vncext: created VNC server for screen 0
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: Connections: accepted: 127.0.0.1::37970
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[7079]: (7079)(140636279781184)[CORE ] waiting for window manager (pid 7082) to exit
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: SConnection: Client needs protocol version 3.3
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: VNCSConnST: Server default pixel format depth 24 (32bpp) little-endian rgb888
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: VNCSConnST: Client pixel format depth 24 (32bpp) little-endian rgb888
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: fuse: mountpoint is not empty
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: fuse: if you are sure this is safe, use the 'nonempty' mount option
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: fuse: mountpoint is not empty
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: fuse: if you are sure this is safe, use the 'nonempty' mount option
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: fuse: mountpoint is not empty
Feb 21 10:59:19 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: fuse: if you are sure this is safe, use the 'nonempty' mount option
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[7079]: (7079)(140636279781184)[CORE ] window manager (pid 7082) did exit, cleaning up session
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[7079]: (7079)(140636279781184)[INFO ] calling auth_stop_session and auth_end from pid 7079
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[7079]: pam_unix(xrdp-sesman:session): session closed for user MYCOMPANY\ME
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[7079]: (7079)(140636279781184)[DEBUG] cleanup_sockets:
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: Fri Feb 21 10:59:20 2020
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: Connections: closed: 127.0.0.1::37970 (Server shutdown)
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: EncodeManager: Framebuffer updates: 1
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: EncodeManager: Raw:
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: EncodeManager: Solid: 5 rects, 286.308 kpixels
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: EncodeManager: 1.09224 MiB (1:1 ratio)
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: EncodeManager: Total: 5 rects, 286.308 kpixels
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: EncodeManager: 1.09224 MiB (1:1 ratio)
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: ComparingUpdateTracker: 0 pixels in / 0 pixels out
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: ComparingUpdateTracker: (1:-nan ratio)
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[7079]: (7079)(140636279781184)[DEBUG] cleanup_sockets: deleting /tmp/.xrdp/xrdp_chansrv_audio_out_socket_11
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[7079]: (7079)(140636279781184)[DEBUG] cleanup_sockets: deleting /tmp/.xrdp/xrdp_chansrv_audio_in_socket_11
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[7079]: (7079)(140636279781184)[DEBUG] cleanup_sockets: deleting /tmp/.xrdp/xrdpapi_11
Feb 21 10:59:20 MY_MACHINE.MYCOMPANY.com xrdp-sesman[4963]: (4963)(140636279781184)[INFO ] ++ terminated session: username MYCOMPANY\ME, display :11.0, session_pid 7079, ip XXX.XXX.XXX.XXX:42558 - socket:>
~

~

~
Steps To Reproduce1.) Run xRDP server on CentOS 8 (latest)
2.) Attempt connection from remote client (possibly only using remmina client)
3.) core
TagsNo tags attached.

Activities

smithjs

smithjs

2020-02-21 10:36

reporter   ~0036361

Feb 21 10:59:20 ExBox3-Linux.luxoft.com systemd-coredump[7277]: Process 7112 (xrdp-chansrv) of user 1580469652 dumped core.
                                                                
                                                                Stack trace of thread 7123:
                                                                #0 0x000055c65e37353d xfs_delete_xfs_fs (xrdp-chansrv)
                                                                #1 0x000055c65e3721f7 xfuse_deinit (xrdp-chansrv)
                                                                #2 0x000055c65e36e7a2 segfault_signal_handler (xrdp-chansrv)
                                                                #3 0x00007f15a6aaea20 __restore_rt (libc.so.6)
                                                                #4 0x000055c65e37353d xfs_delete_xfs_fs (xrdp-chansrv)
                                                                #5 0x000055c65e3721f7 xfuse_deinit (xrdp-chansrv)
                                                                #6 0x000055c65e36e7d2 x_server_fatal_handler (xrdp-chansrv)
                                                                #7 0x000055c65e384156 xcommon_fatal_handler (xrdp-chansrv)
                                                                #8 0x00007f15a70c1a42 _XIOError (libX11.so.6)
                                                                #9 0x00007f15a70bf245 _XEventsQueued (libX11.so.6)
                                                                #10 0x00007f15a70b0cc7 XPending (libX11.so.6)
                                                                #11 0x000055c65e384462 xcommon_check_wait_objs (xrdp-chansrv)
                                                                #12 0x000055c65e36f8d5 channel_thread_loop (xrdp-chansrv)
                                                                #13 0x00007f15a814b2de start_thread (libpthread.so.0)
                                                                #14 0x00007f15a6b734b3 __clone (libc.so.6)
                                                                
                                                                Stack trace of thread 7112:
                                                                #0 0x00007f15a6b6ab1f __select (libc.so.6)
                                                                #1 0x00007f15a836f5bb g_obj_wait (libcommon.so.0)
                                                                #2 0x000055c65e36df7d main (xrdp-chansrv)
                                                                #3 0x00007f15a6a9a873 __libc_start_main (libc.so.6)
                                                                #4 0x000055c65e36e2be _start (xrdp-chansrv)
smithjs

smithjs

2020-02-21 14:16

reporter   ~0036362

I have discovered that this is caused by the same user already being logged in.

Forcing the user off via ssh session "DISPLAY=:0 gnome-session-quit --force" solves the problem.

BUT, it's still a bug to dump core in this situation. Should gracefully decline the connection

Issue History

Date Modified Username Field Change
2020-02-21 10:32 smithjs New Issue
2020-02-21 10:36 smithjs Note Added: 0036361
2020-02-21 14:16 smithjs Note Added: 0036362