Re: INFO: task hung in usbdev_release

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On Tue, Jan 11, 2022 at 03:21:50PM +0800, cruise k wrote:
> Hi,
> 
> Syzkaller found the following issue:
> 
> HEAD commit: 75acfdb Linux 5.16-rc8
> git tree: upstream
> console output: https://pastebin.com/raw/YNZPt1rA
> kernel config: https://pastebin.com/raw/XsnKfdRt
> 
> And hope the report log can help you.

Much more helpful than any of these things would be a description of 
what the test _does_.  Seeing a stack trace after the problem has 
occurred isn't much help for tracking down what events caused the 
problem; to do that we need to know what was happening before the 
problem occurred.

There are two relatively easy things you could do that might also help 
a little: 

	Decode the addresses in the stack dump into source line numbers 
	(probably requires that the kernel be built with debugging
	information).

	Make the console output document in pastebin.com include the 
	_complete_ console output, not just the part starting from when 
	the problem was detected.

Alan Stern



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