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Ticket Resolution Summary Owner Reporter
#14800 invalid Cannot send events to objects owned by a different thread Evgeniy A.
Description

I have linux/amd64 machine with virtual box 5.0.8, and Qt 4.8.7 build in debug mode, when I run VirtualBox I get:

Qt FATAL: ASSERT failure in QCoreApplication::sendEvent: "Cannot send events to objects owned by a different thread. Current thread 8a1f30. Receiver (of type 'UITaskMediumEnumeration') was created in thread 67fcc0", file /tmp/portage/dev-qt/qtcore-4.8.7/work/qt-everywhere-opensource-src-4.8.7/src/corelib/kernel/qcoreapplication.cpp, line 541

#20805 duplicate Cannot set IPv6 address on host only interface with VBoxManage Prolixium
Description

Hi -

I had a previous VirtualBox setup running 6.1.6 that I recently upgraded to 6.1.32. Since then I haven't been able to use VBoxManage to add IPv6 addresses to host only interfaces.

Here's what I get when I try to do it (trying with and without specifying a netmask, although 64 is default):

(excalibur:13:04:EST)% ifconfig vboxnet0                                                                                                 
vboxnet0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.3.7.238  netmask 255.255.255.252  broadcast 10.3.7.239
        inet6 fe80::800:27ff:fe00:0  prefixlen 64  scopeid 0x20<link>
        ether 0a:00:27:00:00:00  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 29075  overruns 0  frame 0
        TX packets 151  bytes 12326 (12.0 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

(excalibur:13:04:EST)% VBoxManage list hostonlyifs
Name:            vboxnet0
GUID:            786f6276-656e-4074-8000-0a0027000000
DHCP:            Disabled
IPAddress:       10.3.7.238
NetworkMask:     255.255.255.252
IPV6Address:     fe80::800:27ff:fe00:0
IPV6NetworkMaskPrefixLength: 64
HardwareAddress: 0a:00:27:00:00:00
MediumType:      Ethernet
Wireless:        No
Status:          Up
VBoxNetworkName: HostInterfaceNetworking-vboxnet0

Name:            vboxnet1
GUID:            786f6276-656e-4174-8000-0a0027000001
DHCP:            Disabled
IPAddress:       192.168.57.1
NetworkMask:     255.255.255.0
IPV6Address:     
IPV6NetworkMaskPrefixLength: 0
HardwareAddress: 0a:00:27:00:00:01
MediumType:      Ethernet
Wireless:        No
Status:          Up
VBoxNetworkName: HostInterfaceNetworking-vboxnet1

(excalibur:13:04:EST)% VBoxManage hostonlyif ipconfig vboxnet0 --ipv6 2620:6:200f:3::1                     
VBoxManage: error: Code NS_ERROR_FAILURE (0x80004005) - Operation failed (extended info not available)
VBoxManage: error: Context: "EnableStaticIPConfigV6(Bstr(pszIpv6).raw(), (PRUint32)uNetmasklengthv6)" at line 256 of file VBoxManageHostonly.cpp
(excalibur:13:04:EST)% VBoxManage hostonlyif ipconfig vboxnet0 --ipv6 2620:6:200f:3::1 --netmasklengthv6 64
VBoxManage: error: Code NS_ERROR_FAILURE (0x80004005) - Operation failed (extended info not available)
VBoxManage: error: Context: "EnableStaticIPConfigV6(Bstr(pszIpv6).raw(), (PRUint32)uNetmasklengthv6)" at line 256 of file VBoxManageHostonly.cpp

But, I can add this address manually just fine with iproute:

(excalibur:13:04:EST)% sudo ip addr add 2620:6:200f:3::1/64 dev vboxnet0                                   
(excalibur:13:04:EST)% ifconfig vboxnet0
vboxnet0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.3.7.238  netmask 255.255.255.252  broadcast 10.3.7.239
        inet6 2620:6:200f:3::1  prefixlen 64  scopeid 0x0<global>
        inet6 fe80::800:27ff:fe00:0  prefixlen 64  scopeid 0x20<link>
        ether 0a:00:27:00:00:00  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 29075  overruns 0  frame 0
        TX packets 162  bytes 13360 (13.0 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

(excalibur:13:04:EST)% 

This seems to be a bug.  Please let me know what information you need.  Here's some information about my system:

(excalibur:13:04:EST)% uname -a
Linux excalibur 5.8.0-2-amd64 #1 SMP Debian 5.8.10-1 (2020-09-19) x86_64 GNU/Linux
(excalibur:13:06:EST)% dpkg -l|grep virtualbox
ii  virtualbox                           6.1.32-dfsg-1+b1                  amd64        x86 virtualization solution - base binaries
ii  virtualbox-dkms                      6.1.32-dfsg-1+b1                  amd64        x86 virtualization solution - kernel module sources for dkms

Thanks!

  • Mark
#3197 invalid Cannot share directory and files for update Henry Gladney
Description

As must be common, I want to update files in Linux directories from a Windows session in VirtualBox. I suspect that I do not fully understand how to do this. I.e., if it is a bug, it would be that the user guide is insufficiently informative.

Operating system is Linux Ubuntu 8.04. Guest operating system is described in the second attached screen snapshot file.

Have Samba sharing working (I believe). First screen snapshot file shows that the directory of interest (/home/gladney/DL/DigPres/Crit/ is shared with all permissions turned on, that VirtualBox sees it as a shared folder and that an included file is shared read-only. However, an attempt to save a copy of this file under another name fails.

Please advise what I'm doing wrong or have overlooked. If you need more information, please specify what that should be.

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