Re: [Report] annoyed dma debug warning "cacheline tracking EEXIST, overlapping mappings aren't supported"

[Jens Axboe]

On 10/13/24 7:27 PM, Ming Lei wrote:
> Hello Guys,
> 
> I got more and more reports on DMA debug warning "cacheline tracking EEXIST,
> overlapping mappings aren't supported" in storage related tests:

This is easily triggerable with dio and reusing a buffer. But it looks
like this will only trigger if CONFIG_DMA_API_DEBUG is set, so should
not be a prod issue? If so, I'd say that debug printk should be killed.

Maybe turn it into a pr_warn_once() or something?

-- 
Jens Axboe