[syzbot] [hardening?] [mm?] BUG: bad usercopy in fpa_set

[Tetsuo Handa]

On 2024/04/15 18:02, Mark Rutland wrote:
>   08626a6056aad824 ("arm: Implement thread_struct whitelist for hardened usercopy")
> 
> That commit says that all accesses are bounce-buffered and bypass the check,
> but AFAICT the fpa_set() code hasn't changed since then, so either that was
> wrong or the user_regset_copyin() code has changed.

Then, can we go with https://lkml.kernel.org/r/0b49d91b-511f-449e-b7c3-93b2ccce6c49@I-love.SAKURA.ne.jp ?