SIGSEGV in RTReqQueueProcess()

[Guy Taylor]

See attached for stacktrace/logs.

Of note is that the following appeared in syslog at the same time:

• kernel: do_general_protection: 39 callbacks suppressed
• kernel: xhci_hcd 0000:00:14.0: WARN Event TRB for slot 16 ep 14 with no TDs queued?

System:

• Architecture: amd64
• DistroRelease: Ubuntu 15.10
• ProcCmdline: /usr/lib/virtualbox/VirtualBox --comment Windows\ 10 --startvm XX-XXX-XX-XX --no-startvm-errormsgbox
• uname -a: Linux other-laptop 4.5.0-040500rc5-generic #201602201730 SMP Sat Feb 20 22:32:16 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
• VBoxManage --version: 5.0.14r105127

[Frank Mehnert]

Sorry, we need the corresponding core dump. If you can provide on, please contact me via frank _dot_ mehnert _at_ oracle _dot_ com.

[Guy Taylor]

So I can reproduce the crash.

Set up: Laptop ---USB3.0--> Laptop Dock + HUB ---USB2.0--> Monitor + HUB ---USB2.0--> Scanner

Steps:

• Start Windows Guest
• Add Laptop Dock USB device to guest
• Add Scanner USB device to guest
• ! CRASH !

Latest errors in syslog:

[   33.561760] wlp2s0: Limiting TX power to 19 (22 - 3) dBm as advertised by 80:37:73:69:62:b0
[  126.520618] vboxdrv: module verification failed: signature and/or required key missing - tainting kernel
[  126.528812] vboxdrv: Found 4 processor cores
[  126.547104] vboxdrv: TSC mode is Invariant, tentative frequency 997680669 Hz
[  126.547107] vboxdrv: Successfully loaded version 5.0.14 (interface 0x00240000)
[  126.755112] VBoxNetFlt: Successfully started.
[  126.759794] VBoxNetAdp: Successfully started.
[  126.762436] VBoxPciLinuxInit
[  126.765186] vboxpci: IOMMU not found (not registered)
[  168.034666] usb 1-1: new full-speed USB device number 8 using xhci_hcd
[  168.164013] usb 1-1: New USB device found, idVendor=1050, idProduct=0116
[  168.164021] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[  168.164025] usb 1-1: Product: Yubikey NEO OTP+U2F+CCID
[  168.164029] usb 1-1: Manufacturer: Yubico
[  168.193997] input: Yubico Yubikey NEO OTP+U2F+CCID as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/0003:1050:0116.0006/input/input22
[  168.247020] hid-generic 0003:1050:0116.0006: input,hidraw3: USB HID v1.10 Keyboard [Yubico Yubikey NEO OTP+U2F+CCID] on usb-0000:00:14.0-1/input0
[  168.247368] hid-generic 0003:1050:0116.0007: hiddev0,hidraw4: USB HID v1.10 Device [Yubico Yubikey NEO OTP+U2F+CCID] on usb-0000:00:14.0-1/input1
[  173.919772] usb 1-1: USB disconnect, device number 8
[ 1081.674374] capability: warning: `VirtualBox' uses 32-bit capabilities (legacy support in use)
[ 1084.158736] SUPR0GipMap: fGetGipCpu=0x3
[ 1084.784625] vboxdrv: ffffffffc0b92020 VMMR0.r0
[ 1085.098129] vboxdrv: ffffffffc0b63020 VBoxDDR0.r0
[ 1085.103321] vboxdrv: ffffffffc0008020 VBoxDD2R0.r0
[ 1085.148355] vboxdrv: ffffffffc0046020 VBoxEhciR0.r0
[ 1085.672523] PS2K: Selected scan set 2
[ 1087.232618] HPET: Using timer above configured range: 3
[ 1087.232626] HPET: Using timer above configured range: 3
[ 1377.706303] perf interrupt took too long (2578 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
[ 1796.863771] usb 1-3.2.2.4: new high-speed USB device number 9 using xhci_hcd
[ 1796.952185] usb 1-3.2.2.4: New USB device found, idVendor=1083, idProduct=1654
[ 1796.952193] usb 1-3.2.2.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1796.952198] usb 1-3.2.2.4: Product: CANON   DR-F120         
[ 1796.952202] usb 1-3.2.2.4: Manufacturer: CANON   
[ 1802.933267] cdc_ncm 2-3.1:1.5 enx0050b6c09fa4: unregister 'cdc_ncm' usb-0000:00:14.0-3.1, CDC NCM
[ 1809.579723] xhci_hcd 0000:00:14.0: WARN Event TRB for slot 8 ep 14 with no TDs queued?
[ 1809.579901] xhci_hcd 0000:00:14.0: WARN Event TRB for slot 8 ep 14 with no TDs queued?
[ 1814.231100] show_signal_msg: 39 callbacks suppressed
[ 1814.231105] USBDevIo--1[6402]: segfault at 7ff6fc019258 ip 00007ff6fc019258 sp 00007ff703b4be88 error 15

I am also now on Kernel 4.5rc6

uname -a
Linux other-laptop 4.5.0-040500rc6-generic #201602281230 SMP Sun Feb 28 17:33:02 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

[Frank Mehnert]

Just an update. We analyzed the core dump and see where it crashes. So far no idea how to fix.

[Guy Taylor]

It may be due to something about the "DisplayLink (b2b044eac00)" device. I am seeing the following error when this device is attached to the Windows guest AND DisplayLink driver is installed, followed by a crash (without deattaching the device as above).

[ 8753.313256] traps: USBDevIo--1[15357] general protection ip:7fca806b5ae0 sp:7fc9d14b4e20 error:0 in VBoxDD.so[7fca805f1000+282000]

Other DisplayLink issues:

• https://www.virtualbox.org/ticket/12032
• https://www.virtualbox.org/ticket/12985

I am now running

Version 5.0.16 r105871
Linux other-laptop 4.5.0-040500rc6-generic #201602281230 SMP Sun Feb 28 17:33:02 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux