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Shared folders not mounted in Ubuntu guest from Win 7 Host

Posted: 26. Dec 2013, 09:03
by kiran_babu
Hello people,
I'm running an Ubuntu guest on VirtualBox (version 4.2.20) on a Windows 7 host. I'm not able to mount shared folders on my guest. I tried automount as well as manually mounting.
I'm on kernel version 3.2.0-57-generic-pae.

No error is reported by the mount command, but the command exits with error code 2.

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$ sudo mount -t vboxsf share /mnt/share
$ echo $?
$ 2
Running dmesg shows the below log; I've only copied the top few lines, the entire log is available in the attachment

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[ 1227.544321] BUG: unable to handle kernel NULL pointer dereference at   (null)
[ 1227.544329] IP: [<c1152e5f>] path_init+0x7f/0x380
[ 1227.544336] *pdpt = 0000000029607001 *pde = 0000000000000000 
[ 1227.544341] Oops: 0000 [#2] SMP 
[ 1227.544345] Modules linked in: nls_utf8 isofs vboxsf(O) talpa_vfshook(O) talpa_pedconnector(O) talpa_pedevice(O) talpa_vcdevice(O) talpa_core(O) talpa_linux(O) talpa_syscallhook(O) rfcomm bnep bluetooth binfmt_misc nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc vesafb joydev ppdev parport_pc mac_hid lp parport vboxguest(O) psmouse serio_raw vboxvideo(O) drm i2c_piix4 usbhid hid e1000
[ 1227.544364] 
[ 1227.544368] Pid: 2528, comm: mount.vboxsf Tainted: G      D    O 3.2.0-57-generic-pae #87-Ubuntu innotek GmbH VirtualBox/VirtualBox
I've also attached the result of an strace on the mount command.
The Guest shows the shared folders when I list them, but mount fails.

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kkb1kor@g3gdev-kkb1kor-1:~$ sudo VBoxControl sharedfolder list
Oracle VM VirtualBox Guest Additions Command Line Management Interface Version 4.2.20
(C) 2008-2013 Oracle Corporation
All rights reserved.

Shared Folder mappings (3):

01 - another
02 - share
03 - views
Has anyone faced such a problem? Any inputs would be greatly appreciated.

Thanks!