Messages in this thread | | | Date | Tue, 16 May 2023 23:45:42 +0900 | From | Mark Brown <> | Subject | Re: arm64: fp-stress: BUG: KFENCE: memory corruption in fpsimd_release_task |
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On Tue, May 16, 2023 at 02:44:49PM +0100, Will Deacon wrote:
> Mark -- given that this is an SME allocation, please can you take a look?
I'm on holiday.
> I think the implication of the kfence report is that we're writing beyond > the end of 'task->thread.sme_state' at some point and corrupting the > redzone.
> There are two reports here, so hopefully it's not too hard to repro.
I think I *once* saw something that might be this but I've never reproduced it, and I suspect that if this just suddenly came up with LKFT in stable kernels when there's been no relevant changes AFAIR it's not showing up terribly reliably there either. [unhandled content-type:application/pgp-signature] | |