nvme/039 intermittent failure

[Shin'ichiro Kawasaki]

CC+ Alan,

On Jun 29, 2026 / 15:30, John Garry wrote:
> I have noticed nvme/039 for passthru error logging intermittently failing on
> v7.2-rc1
> 
> For failures, passthrough kernel logs are missing sometimes.
> 
> I had not noticed this on older kernels.

So far I do not observe the failure with v7.2-rc1 kernel.

> 
> I do note that the passthru error logging kernel code uses
> pr_err_ratelimited(), so this can hardly ever be a reliable test.
> 
> Is this a known issue?

I wasn't aware of it. Do you observe any kernel message that indicate
that the error message, like "X: Y callbacks suppressed"? If so, the
test case maybe able to check the message to see if the test result is
reliable or not.

Alan, may I ask you to share your thoughts about the comment?