request_module DoS

Michael Ellerman mpe at ellerman.id.au
Thu May 12 22:07:26 AEST 2022


Michael Ellerman <mpe at ellerman.id.au> writes:
> Luis Chamberlain <mcgrof at kernel.org> writes:
...
>
>> Can someone try this on ppc64le system? At this point I am not convinced
>> this issue is generic.
>
> Does your x86 system have at least 784 CPUs?
>
> I don't know where the original report came from, but the trace shows
> "CPU 784", which would usually indicate a system with at least that many
> CPUs.

Update, apparently the report originally came from IBM, so I'll chase it
up internally.

I think you're right that there's probably no issue in the module code,
sorry to waste your time.

cheers


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