Re: [PATCH RFC 0/3] virtio: silence KCSAN warnings

[Alexander Graf]

On 27.01.26 09:39, Johannes Thumshirn wrote:
> When booting a Qemu VM whith KCSAN to debug filesystem races I
> encountered a bunch of KCSAN splats in virtio.
>
> I suspect them to be false positives.
>
> I decided to send this as an RFC patchset, as I have no prior knowledge
> of virtio.


All of these looks like KCSAN was just detecting the hypervisor writing 
data. Is there a more generic way we can capture that in the virtio 
helpers? So instead of patching the consumers of functions such as 
vring_interrupt(), can we annotate the whole vring struct as "ignore for 
KCSAN"?


Alex





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