On 1/27/26 9:48 AM, Alexander Graf wrote:
> 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"?
>
Oh indeed, there is a __data_racy annotation. Let me try it!
