VirtualBox

Ticket #17227 (closed defect: fixed)

Opened 2 years ago

Last modified 2 years ago

Kernel debug problem via pipe to com port => fixed in SVN/next maintenance

Reported by: michaeljo Owned by:
Component: uart Version: VirtualBox 5.2.0
Keywords: pipe com port Cc:
Guest type: Windows Host type: Windows

Description

I have several windows guests that I have been using for driver development and kernel debugging (WinDbg) using a
.\pipe\com1 to the windows guest's com port. This has always worked but after upgrading to 5.2 WinDbg says: Retry sending the same data packet for 64 times. The transport connection between host kernel debugger and target Windows seems lost. please try resync with target, recycle the host debugger, or reboot the target Windows.

Attachments

VBox.log Download (112.9 KB) - added by michaeljo 2 years ago.
VBox.log

Change History

comment:1 Changed 2 years ago by aeichner

Please attach a VBox.log of one of the affected VMs please.

comment:2 Changed 2 years ago by vushakov

Likely a duplicate of #17239 which does provide logs.

Changed 2 years ago by michaeljo

VBox.log

comment:3 Changed 2 years ago by vushakov

  • Component changed from other to uart

comment:4 Changed 2 years ago by vushakov

Also #17093. This is likely the same regression.

comment:5 Changed 2 years ago by aeichner

  • Summary changed from Kernel debug problem via pipe to com port to Kernel debug problem via pipe to com port => fixed in SVN/next maintenance

Thanks for the report, this is indeed a regression in 5.2.0 and will be fixed with the next maintenance release.

comment:6 Changed 2 years ago by michael

  • Status changed from new to closed
  • Resolution set to fixed
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