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Ticket Resolution Summary Owner Reporter
#19306 invalid Cannot attach USB device crvi
Description

From VBox.Log:

00:38:36.435566 ERROR [COM]: aRC=NS_ERROR_FAILURE (0x80004005) aIID={872da645-4a9b-1727-bee2-5585105b9eed} aComponent={ConsoleWrap} aText={Failed to create a proxy device for the USB device. (Error: VERR_PDM_NO_USB_PORTS)}, preserve=false aResultDetail=-2861

Ubuntu Guest:

root@VirtualBox:/# cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=19.10
DISTRIB_CODENAME=eoan
DISTRIB_DESCRIPTION="Ubuntu 19.10"

root@VirtualBox:/# uname -a
Linux VirtualBox 5.3.0-24-generic

#19305 fixed EFLAGS.AC is clear Jan Palus
Description

I am struggling with getting distribution build of VirtualBox to work under Linux. Whenever VM start is attempted it fails and following is logged in dmesg:

[   41.692109] ModuleInit, line 178: EFLAGS.AC is clear! (0x202)
[   41.692127] ModuleInit, line 207: EFLAGS.AC is clear! (0x202)
[   41.692163] ModuleInit, line 211: EFLAGS.AC is clear! (0x246)
[   41.692177] ModuleInit, line 215: EFLAGS.AC is clear! (0x246)
[   41.692189] ModuleInit, line 219: EFLAGS.AC is clear! (0x246)
[   41.692189] ModuleInit, line 222: EFLAGS.AC is clear! (0x246)
[   41.692190] ModuleInit, line 227: EFLAGS.AC is clear! (0x246)
[   41.692190] ModuleInit, line 233: EFLAGS.AC is clear! (0x246)
[   41.692191] ModuleInit, line 243: EFLAGS.AC is clear! (0x246)
[   41.692199] ModuleInit, line 253: EFLAGS.AC is clear! (0x246)

I've been looking a bit into code and don't really understand how it's expected to work. ModuleInit in VMMR0 is using VMM_CHECK_SMAP_CHECK in multiple places and probably that's what causes init method failure. VMM_CHECK_SMAP_CHECK ensures that CPU AC bit is set in EFLAGS. The only possibility to disable the check is to enable VBOX_WITH_RAM_IN_KERNEL which appears to be disabled on purpose. Hence AC flag check is mandatory. On the other hand VBOX_WITHOUT_EFLAGS_AC_SET_IN_VBOXDRV was added in src/VBox/HostDrivers/Support/linux/Makefile so there's no way AC bit is actually set. Could you please clarify?

#19299 invalid Shared folders don't work ( automount Error: vbsvcAutomounterMountIt: Failed to mount ) crvi
Description

[root@localhost ~]# journalctl -u vboxservice

Feb 09 16:49:38 localhost.localdomain systemd[1]: Started VirtualBox guest services. Feb 09 16:49:39 localhost.localdomain VBoxService[855]: 11:19:39.984789 main VBoxService 6.1.2_Fedora r135662 (verbosity: 0) linux.amd64 (Jan 31 2020 00:00:00) release log Feb 09 16:49:39 localhost.localdomain VBoxService[855]: 11:19:39.984818 main Log opened 2020-02-09T11:19:39.950756000Z Feb 09 16:49:39 localhost.localdomain VBoxService[855]: 11:19:39.984917 main OS Product: Linux Feb 09 16:49:39 localhost.localdomain VBoxService[855]: 11:19:39.984933 main OS Release: 5.6.0-0.rc0.git5.1.fc32.x86_64 Feb 09 16:49:39 localhost.localdomain VBoxService[855]: 11:19:39.984953 main OS Version: #1 SMP Fri Feb 7 17:00:23 UTC 2020 Feb 09 16:49:39 localhost.localdomain VBoxService[855]: 11:19:39.984999 main Executable: /usr/sbin/VBoxService Feb 09 16:49:39 localhost.localdomain VBoxService[855]: 11:19:39.985000 main Process ID: 855 Feb 09 16:49:39 localhost.localdomain VBoxService[855]: 11:19:39.985000 main Package type: LINUX_64BITS_GENERIC (OSE) Feb 09 16:49:39 localhost.localdomain VBoxService[855]: 11:19:39.987250 main 6.1.2_Fedora r135662 started. Verbose level = 0 Feb 09 16:49:39 localhost.localdomain VBoxService[855]: 11:19:39.998890 main vbglR3GuestCtrlDetectPeekGetCancelSupport: Supported (#1) Feb 09 16:49:40 localhost.localdomain VBoxService[855]: 11:19:40.372784 automount Error: vbsvcAutomounterMountIt: Failed to mount 'android' on '/media/sf_android': No such device (-1,19) Feb 09 16:49:41 localhost.localdomain VBoxService[855]: 11:19:41.390994 automount Error: vbsvcAutomounterMountIt: Failed to mount 'android' on '/media/sf_android': No such device (-1,19) Feb 10 10:45:57 localhost.localdomain VBoxService[855]: 05:15:57.384676 timesync vgsvcTimeSyncWorker: Radical host time change: 39 729 458 000 000ns (HostNow=1 581 311 757 323 000 000 ns HostLast=1 581 272 027 865 000 000 ns) Feb 10 10:46:07 localhost.localdomain VBoxService[855]: 05:16:07.624045 timesync vgsvcTimeSyncWorker: Radical guest time change: 39 724 011 125 000ns (GuestNow=1 581 311 767 624 002 000 ns GuestLast=1 581 272 043 612 877 000 ns fSetTimeLastLoop=true )

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