Memory exception during guest reset

Postings relating to old VirtualBox pre-releases

Memory exception during guest reset

Postby JoergK » 13. Oct 2017, 13:47

Hallo,

I would like to report a memory exception that occures when I try to reset a running guest.

Host: Win7 64-bit
Guest: RHEL 7.4
VirtualBox VM 5.2.0_RC1 r118201

When I try to reset the guest (Ctrl+T) I get the attached error message and the window of the virtual machine crashes. I could reproduce the error. The error appears at the same memory address each time.

Regards,
JoergK
Attachments
vbox_ram_error.png
Screenshot of error message
vbox_ram_error.png (8.93 KiB) Viewed 2245 times
JoergK
 
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Re: Memory exception during guest reset

Postby michaln » 17. Oct 2017, 09:00

You say you're resetting the guest with "Ctrl+T", but the default key combination for VM reset is Host/Ctrl+R. I expect you really mean reset (and not taking a snapshot, which is Host/Ctrl+T by default), but want to be sure.

Anyway that's really interesting, but there's not even a VBox.log, leave alone something that would actually make it possible to fix the crash, like a minidump. If there aren't lots of people complaining, it is safe to assume you're the only one seeing this problem, so it won't get fixed without detailed information.
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Re: Memory exception during guest reset

Postby socratis » 17. Oct 2017, 09:08

Just a small note: "T" and "R" are next to each other on a standard keyboard, it may be a typo...
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Re: Memory exception during guest reset

Postby JoergK » 17. Oct 2017, 12:25

Hi,

I used Machine --> Reset from the vBox main window to reset the guest. I wrote Ctrl+T because it is mentioned as the key combination in the menu and I thought this would make clear what I mean. Sorry if my post was confusing.

Please finde the vbox.log files attached. They are from my tests with the RC1. Currently I've reinstalled the BETA2 because I need to test something else on a RHEL 7.4 guest and the BETA2 is last version working for me. But maybe you could find some hint in the vbox.log files from the last days.

Regards,
JoergK
Attachments
VBox.log.3.log
(122.11 KiB) Downloaded 17 times
VBox.log.2.log
(121.15 KiB) Downloaded 12 times
JoergK
 
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Joined: 25. Aug 2017, 09:37

Re: Memory exception during guest reset

Postby michaln » 17. Oct 2017, 13:57

I see, it's Ctrl+T in the VM Manager, but Host+R in the VM window. Thanks for the clarification.

VBox.log.2.log does not show any reset but may indicate a VM process crash on shutdown. VBox.log.3.log is incomplete but does not show either a reset or a poweroff. I can't tell if it indicates any crash at all. It's still useful information, but not enough to fix the crashes. Anyway, best to wait for the next build now.
michaln
Oracle Corporation
 
Posts: 2957
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Re: Memory exception during guest reset

Postby JoergK » 17. Oct 2017, 14:56

michaln wrote:Anyway, best to wait for the next build now.


Ok, I will test with the next build again and update this thread then.
JoergK
 
Posts: 26
Joined: 25. Aug 2017, 09:37


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