Opened 5 years ago
Closed 4 years ago
#19357 closed defect (fixed)
VBoxClient crashes on Luuntu 14.04 after updating from 6.1.2 to 6.1.4 (fixed in 6.1.6)
Reported by: | Gabri74 | Owned by: | Frank Batschulat (Oracle) |
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Component: | guest additions | Version: | VirtualBox 6.1.4 |
Keywords: | crash guest additions 6.1.4 ubuntu 14.04 XQueryExtension VBoxClient | Cc: | |
Guest type: | Linux | Host type: | all |
Description
After updating guest additions from 6.1.2 to 6.1.4 VboxClient will always crash at boot, causing the system crash report to open with the message:
VBoxClient crashed with SIGSEGV in XQueryExtension()
Host: Ubuntu 19.10 and Windows 10 Guest: Lubuntu 14.04
Attachments (3)
Change History (21)
by , 5 years ago
Attachment: | lubuntu1404-2020-02-28-12-04-09.log added |
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by , 5 years ago
Attachment: | _opt_VBoxGuestAdditions-6.1.4_bin_VBoxClient.1000.crash added |
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Lubuntu crash report
follow-up: 3 comment:1 by , 5 years ago
Only cut&past integration seems affected, all other guest features seem to work..
Running VBoxClient istances after crash:
user 1890 0.0 0.0 54360 372 ? S 12:03 0:00 /usr/bin/VBoxClient --display user 1891 0.0 0.0 54508 3564 ? S 12:03 0:00 /usr/bin/VBoxClient --display user 1897 0.0 0.0 54360 376 ? S 12:03 0:00 /usr/bin/VBoxClient --seamless user 1898 0.0 0.0 186612 3032 ? Sl 12:03 0:00 /usr/bin/VBoxClient --seamless user 1906 0.0 0.0 54360 376 ? S 12:03 0:00 /usr/bin/VBoxClient --draganddrop user 1907 0.1 0.0 187128 3000 ? Sl 12:03 0:01 /usr/bin/VBoxClient --draganddrop user 1913 0.0 0.0 54360 1504 ? S 12:03 0:00 /usr/bin/VBoxClient --vmsvga-x11 root 2523 0.0 0.0 371428 2888 ? Sl 12:04 0:00 /usr/sbin/VBoxService --pidfile /var/run/vboxadd-service.sh
comment:3 by , 5 years ago
Replying to Gabri74:
Only cut&past integration seems affected, all other guest features seem to work..
That one, the broken cut&paste, is a different bug:
Ticket #19336 (new defect) Linux guest: shared clipboard doesn't work (on fresh VirtualBox-6.1.4-136177)
follow-up: 9 comment:5 by , 5 years ago
Same problem has been reported against Fedora 31, Fedora Rawhide and Fedora 32 Beta branch.
comment:6 by , 5 years ago
this happens only with Settings -> display -> graphics controller -> VBoxSVGA ?
comment:7 by , 5 years ago
@sergiomb also happens with VBoxVGA.
VMSVGA fixes the crashing problem [for me] but doesn't work for other reasons. I have never managed to get VMSVGA to work on Fedora, I am stuck with a text boot (which I don't care about really) but also an 800x600 display which is of course unusable these days.
comment:8 by , 5 years ago
@sergiomb I spoke too soon, I am seeing the crashes in VMSVGA mode now as well.
comment:9 by , 5 years ago
Replying to nixuser:
Same problem has been reported against Fedora 31, Fedora Rawhide and Fedora 32 Beta branch.
For the record, the reported stack trace in there is:
Feb 25 08:12:28 luks systemd[1]: Started Process Core Dump (PID 1478/UID 0). Feb 25 08:12:29 luks abrt-notification[1480]: Process 1093 (VBoxClient) crashed in XQueryExtension() Feb 25 08:12:30 luks systemd-coredump[1479]: Process 1473 (VBoxClient) of user 1000 dumped core. Stack trace of thread 1473: #0 0x00007f99e89cc04f XQueryExtension (libX11.so.6 + 0x3d04f) #1 0x00007f99e89bf4a7 XInitExtension (libX11.so.6 + 0x304a7) #2 0x00007f99e890e6d1 XextAddDisplay (libXext.so.6 + 0xe6d1) #3 0x00007f99e8984a50 XRRFindDisplay.part.0 (libXrandr.so.2 + 0x2a50) #4 0x00007f99e89851d8 XRRQueryExtension (libXrandr.so.2 + 0x31d8) #5 0x00000000004090da _ZL3runPP11VBCLSERVICEb (VBoxClient + 0x90da) #6 0x00000000004076ec main (VBoxClient + 0x76ec) #7 0x00007f99e871c042 __libc_start_main (libc.so.6 + 0x27042) #8 0x00000000004078de _start (VBoxClient + 0x78de)
comment:10 by , 5 years ago
Keywords: | XQueryExtension VBoxClient added |
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comment:11 by , 5 years ago
I've got a similar crash on VirtualBox 6.1.4 Windows host, VBoxSVGA, LUbuntu 18.04 guest (freshly installed), kernel 5.3 ("hwe"). dmesg log was full of repetitive crash lines regarding VboxClient and libX11. Shared clipboard and guest auto-resize did not work. Re-installed 6.0.18 and re-installed guest additions, everything is working.
comment:12 by , 5 years ago
Can reproduce in 6.1.4
Reverted to version 6.1.2 to solve this issue for now.
comment:13 by , 5 years ago
I've just debugged this and it clearly is a bug introduced in some of the changes in 6.1.4, the "VBoxClient --vmsvga-x11" helper process code now has this code:
VirtualBox-6.1.4/src/VBox/Additions/x11/VBoxClient/display-svga-x11.cpp: x11Connect():
pContext->pDisplay = XOpenDisplay(NULL); if (pContext->pDisplay == NULL)
return;
if(!XQueryExtension(pContext->pDisplay, "VMWARE_CTRL",
&pContext->hVMWMajor, &dummy, &dummy))
{
XCloseDisplay(pContext->pDisplay); pContext->pDisplay = NULL;
}
if (!XRRQueryExtension(pContext->pDisplay, &pContext->hRandREventBase, &pCon {
XCloseDisplay(pContext->pDisplay); pContext->pDisplay = NULL;
}
Notice how the code happily continues after closing the display and setting pContext->pDisplay = NULL when the query for the "VMWARE_CTRL" extension fails; and this will fail when using VboxSVGA as virtual VGA adapter which was the default for a long time, as well as when running a Wayland based desktop and recent GNOME3 versions run as Wayland compositor (rather then on top of X11) by default now, so this is impacting a lot of users.
The fix is to add a return statement after all the pContext->pDisplay = NULL; lines in the x11Connect() function.
by , 5 years ago
Attachment: | VirtualBox-6.1.4-VBoxClient-vmsvga-x11-crash.patch added |
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Patch fixing the crash
comment:14 by , 5 years ago
comment:15 by , 5 years ago
Owner: | set to |
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Status: | new → accepted |
comment:17 by , 5 years ago
The following GA test build for the 6.1 release train contains the fix:
https://www.virtualbox.org/wiki/Testbuilds
https://www.virtualbox.org/download/testcase/VBoxGuestAdditions_6.1.5-136327.iso
comment:18 by , 4 years ago
Resolution: | → fixed |
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Status: | accepted → closed |
Summary: | VBoxClient crashes on Luuntu 14.04 after updating from 6.1.2 to 6.1.4 → VBoxClient crashes on Luuntu 14.04 after updating from 6.1.2 to 6.1.4 (fixed in 6.1.6) |
this has been fixed in public release 6.1.6
vbox log