VBoxVRDP.so segfault

[Chris]

Core was generated by `/usr/lib/virtualbox/VBoxHeadless -comment VXP2 -startvm f6190691-7961-4337-d486'.

Program terminated with signal 11, Segmentation fault.
#0  0xb462ff24 in ?? () from /usr/lib/VBoxVRDP.so

Package: virtualbox
New: yes
State: installed Automatically installed: yes Version: 1.6.0-30421_Ubuntu_gutsy Priority: optional Section: misc

Host system Ubuntu gutsy - full patched 2008-05-09 Client Debian Etch 64Bit connection over an OpenVPN tunnel Hong Kong -> China (but local connection produce cores too)

0:00:07.574 VRDP: Channel: [cliprdr] [1004]. Accepted.[[BR]]
00:00:07.591 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=00000000 w=720 h=400 bpp=0 cbLine=0x0
00:00:07.771 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=b29e0000 w=640 h=480 bpp=0 cbLine=0x140
00:00:07.793 VRDP: Client seems to be rdesktop.
00:00:07.793 VRDP: Logon: scaleo (192.168.xxx.xxx) build 2600. User: [xxxxx] Domain: [] Screen: 0
00:00:07.794 VRDPAUTH: User: [xit-support]. Domain: []. Authentication type: [Null]
00:00:07.794 VRDPAUTH: Access granted.
00:00:07.794 VBVA: VRDP acceleration has been requested.
00:00:07.815 Guest Log: BIOS: int13_harddisk: function 15, unmapped device for ELDL=81
00:00:10.135 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=00000000 w=720 h=400 bpp=0 cbLine=0x0
00:00:10.144 PIT: mode=2 count=0x2ead (11949) - 99.85 Hz (ch=0)
00:00:10.311 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=b29e0000 w=640 h=480 bpp=0 cbLine=0x140
00:00:11.815 PIIX3 ATA: LUN#0: IDLE IMMEDIATE, CmdIf=0xef (-1 usec ago)
00:00:11.815 PIIX3 ATA: LUN#0: aborting current command
00:00:18.026 Guest Additions information report: additionsVersion = 0x00010004  osType = 0x00033000
00:00:18.029 Guest adapter information contains unsupported type 5. The block has been skipped.
00:00:18.236 Guest reported fixed hypervisor window at 0xf6000000 (size = 0x800000, rc = VINF_SUCCESS)
00:00:18.718 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=b29e0000 w=1024 h=768 bpp=16 cbLine=0x800
00:00:18.730 VBVA: Enabled.
00:00:18.925 Guest requests mouse pointer integration

regard

Chris

[Frank Mehnert]

Would be great if you could provide a core dump (please attach it to this defect if possible).

[Chris]

I update the system to hardy and install the 1.6.0-30421_Ubuntu_hardy deb. reproduce the core please see attached bzip2 core

Would be great if you can provide a debug-version for real-time debugging.

[Chris]

Core file is to big - your system accept only 40000 bytes :-/ please us the link for download:

​http://www.xit.com.hk/core.13613.bz2 md5sum ee0b3a59175188ece9a1aa572c324288 core.13613.bz2

regards Chris

[Chris]

I had install and test with latest virtualbox_1.6.2-31466_Ubuntu_hardy_i386.deb

Core was generated by `/usr/lib/virtualbox/VBoxHeadless -comment VXP2 -startvm f6190691-7961-4337-d486'. Program terminated with signal 11, Segmentation fault. #0 0xb45f0054 in ?? () from /usr/lib/VBoxVRDP.so

please download corefile here:

​http://www.xit.com.hk/core.6931.bz2

md5sum 2b3494f50949c3a9c7173ae861059315 core.6931.bz2

regards Chris

[Frank Mehnert]

We think that we found the problem. I sent you a private EMail with a link to a development build which should have this problem fixed. Feedback appreciated. Thanks for your help.

[Chris]

Frank,

great work, the fix you made kill the bug! No more cores.

Remaining: Remote desktop where frequently disconnected. The connection running over a stable openVPN tunnel. My succession some kind of timing problem related to latency on the line - maybe a short timer. I start a network monitoring - in case a tcp-reset trigger this behavior.

Thank you very much - greetings to the rest of the team - remind me to the day when I'm in the core developer team in Frankfurt (IBM).

regards Chris

[Frank Mehnert]

Glad to hear that but actually I'm not the right person to honour -- this is sunlover, one of my colleagues. And he will probably help you debugging the remaining issues.

[sunlover]

Chris, please attach the entire VBox.log file for a session with a few remote desktop disconnects.

[Brad]

I'm also getting very consistent segfaults with an Ubuntu 8.04 host and a Windows XP guest. Our VBox machines are pretty much offline as a result of this bug.

If you want a core dump or would like me to test a beta version of the next release, please contact me via e-mail.

[Frank Mehnert]

For the record, the 1.6.3 build I sent to ZenGuy seems to solve the problems for him as well.

[Brad]

Sorry for not following up sooner...yes, build 1.6.3 looks pretty stable from my perspective. The segfaults have stopped.

[Frank Mehnert]

Chris, can you attach a VBox.log as sunlover asked?

[Chris]

Log as requested .