#17227 closed defect (fixed)

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

Reported by:	Michael Johansen	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 (1)

VBox.log (112.9 KB ) - added by Michael Johansen 7 years ago.: VBox.log

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Change History (7)

comment:1 by aeichner, 7 years ago

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

comment:2 by Valery Ushakov, 7 years ago

Likely a duplicate of #17239 which does provide logs.

by Michael Johansen, 7 years ago

Attachment:	VBox.log added

VBox.log

comment:3 by Valery Ushakov, 7 years ago

Component:	other → uart

comment:4 by Valery Ushakov, 7 years ago

Also #17093. This is likely the same regression.

comment:5 by aeichner, 7 years ago

Summary:	Kernel debug problem via pipe to com port → 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 by Michael Thayer, 7 years ago

Resolution:	→ fixed
Status:	new → closed

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