Re: Stack trace when removing Thunderbolt devices while kernel shutting down

[Bjorn Helgaas]

On Tue, Feb 18, 2020 at 02:18:40PM +0000, Nicholas Johnson wrote:
> Hi Bjorn,
> 
> If I surprise remove Thunderbolt 3 devices just as the kernel is 
> shutting down, I get stack dumps, when those devices would not normally 
> cause stack dumps if the kernel were not shutting down.
> 
> Because the kernel is shutting down, it makes it difficult to capture 
> the logs without a serial console.
> 
> In your mind, is this cause for concern? There is no harm caused and the 
> kernel still shuts down. The main thing I am worried about is if this 
> means that the locking around the subsystem is not strict enough.
> 
> If you think this is worth looking into, I will try to learn about how 
> the native interrupts are handled and try to investigate, and I will 
> also try to get my serial console working again to capture the details.

Yes, I think this is worth looking into.