Am 21.05.26 um 17:14 schrieb Fiona Ebner:
> Am 21.05.26 um 4:35 PM schrieb Kevin Wolf:
>> Anyway, as it depends on a specific pattern of discard and cluster
>> allocation happening while a write request is in flight, it should be
>> possible to use tracing to find out if anything like that is happening
>> in your case.
>
> I will try to do tracing. With the following program, I see that the
> corrupt memory reads back as zeroes:
Hmm, looking at qcow2_co_pwrite_zeroes(): could the cluster state
observed before wait_for_dependencies() drops s->lock differ from what
qcow2_subcluster_zeroize() then operates on?
