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Ticket Resolution Summary Owner Reporter
#12783 worksforme VirtualBox 4.3.8 on Ubuntu 12.04 (AMD64) crashed multiple times in IsMultiMonitor() - SIGSEV wernerf
Description

I'm using Remote Desktop to connect to VMs running on Ubuntu from Windows 7.

VirtualBox 4.3.6 was stable in this environment, since the upgrade to 4.3.8 the VMs started crashing.

<==========================================================================================>

ExecutablePath: /usr/lib/virtualbox/VBoxHeadless

Title: VBoxHeadless crashed with SIGSEV in IsMultiMonitor()

Thread 1 (Thread 0x7fac5fcfd700 (LWP 1376)): #0 IsMultiMonitor (this=<optimized out>) at /mnt/tinderbox/extpacks-4.3/src/VBox/RDP/server/vrdpclient.h:613 No locals. #1 VRDPServer::ProcessUpdateComplete (this=0x7fac6d42a010) at /mnt/tinderbox/extpacks-4.3/src/VBox/RDP/server/server.cpp:1144 fMultiMonitor = false rectClient = {x = 1607453584, y = 32684, w = 0, h = 0} uScreenId = 1610621360 redraw = {cRectsClient = 0, aRectsClient = {{rectRedraw = {x = 0, y = 0, w = 1919, h = 1079}}, {rectRedraw = {x = 0, y = 0, w = 1921, h = 1081}}, {rectRedraw = {x = 0, y = 0, w = 0, h = 0}}, {rectRedraw = {x = 0, y = 0, w = 0, h = 0}}, {rectRedraw = {x = 0, y = 0, w = 0, h = 0}}, {rectRedraw = {x = 0, y = 0, w = 0, h = 0}}, {rectRedraw = {x = 0, y = 0, w = 0, h = 0}}, {rectRedraw = {x = 0, y = 0, w = 0, h = 0}}}, cRectsShadowBuffer = 0, aRectsShadowBuffer = {{rectRedraw = {x = 0, y = 0, w = 0, h = 0}, uScreenId = 0} <repeats 32 times>}, fFullscreen = false} rc = 0 u32ClientId = 8 pClient = 0x7fac54001400 #2 0x00007fac6e14bd1c in ?? () from /usr/lib/virtualbox/components/VBoxC.so No symbol table info available. #3 0x00007fac3b583981 in ?? () from /usr/lib/virtualbox/VBoxDD.so No symbol table info available. #4 0x00007fac6e8537be in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so No symbol table info available. #5 0x00007fac6e856634 in TMR3TimerQueuesDo () from /usr/lib/virtualbox/components/VBoxVMM.so No symbol table info available. #6 0x00007fac6e7f7358 in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so No symbol table info available. #7 0x00007fac6e7fb2ba in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so No symbol table info available. #8 0x00007fac6e7f8751 in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so No symbol table info available. #9 0x00007fac6e85fb8e in ?? () from /usr/lib/virtualbox/components/VBoxVMM.so No symbol table info available. #10 0x00007fac759b938c in ?? () from /usr/lib/virtualbox/VBoxRT.so No symbol table info available. #11 0x00007fac75a1bdcc in ?? () from /usr/lib/virtualbox/VBoxRT.so No symbol table info available. #12 0x00007fac76280e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #13 0x00007fac75da93fd in clone () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #14 0x0000000000000000 in ?? ()

#3621 worksforme iscsi device is not accessible after creating with addiscsidisk Werner Frerichs
Description

I add an existing iscsi-disk to VirtualBox withj the command

imapcl1:~ # VBoxManage addiscsidisk -server x.xxx.xxx.xxx -target iqn.2000-03.com.xxx ... Created successfull with id ...

but the command "list hdds" show:

imapcl1:~ # VBoxManage list hdds
UUID: 19c22d35-bed0-4001-a6cd-534c8ea7f703
Format: iSCSI
Location: xxx.xxx.xxx.xxx/iqn.2000-03.com.xxx
Accessible: no

that the disk is not accessible. The command showhdinfo show:

imapcl1:~ # VBoxManage showhdinfo 19c22d35-bed0-4001-a6cd-534c8ea7f703
VirtualBox Command Line Management Interface Version 2.1.4
(C) 2005-2009 Sun Microsystems, Inc.
All rights reserved.

UUID: 19c22d35-bed0-4001-a6cd-534c8ea7f703
Accessible: no
Access Error: Could not open the hard disk '192.168.102.132/iqn.2000-03.com.xxx'.
VD: error opening image file 'xxx.xxx.xxx.xxx/iqn.2000-03.com.xxx' (VERR_IO_GEN_FAILURE)
Logical size: 0 MBytes
Current size on disk: 0 MBytes
Type: normal
Storage format: iSCSI
Location: xxx.xxx.xxx.xxx/iqn.2000-03.com.xxx

that the disk was created with the Type normal and not with write-through. Maybe this is the problem, but i cannot find how to make something different or to use a flag like "-type ..."

#3766 fixed TCP checksum doesnot work Werner Frerichs
Description

Transfering large data using scp or ssh breaks with the message "Corrupted MAC on input." . This can be a bug in Virtualbox, Hardware, ... or something else. Transfering data using http for examble new packages, updates, ... never breaks because http doesnot check the transport twice (tcp should do this), so the packages are corrupt (wrong md5sum or gunzip cannot open).

I don't know, if the corruption of the transport belongs to a bug in my hardware or in the device driver for the virtual network interface, but there must be a chance to enable TCP checksum to avoid corrupted data.

I found an article/bug report on xensource which describ this better. http://lists.xensource.com/archives/html/xen-users/2006-01/msg00741.html

Thanks Werner Frerichs

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