[BUG] dm-crypt broken after 2632e2521769 ("arm64: fpsimd: Implement lazy restore for kernel mode FPSIMD")

[Mark Brown]

On Tue, May 21, 2024 at 11:23:10PM +0200, Janne Grunau wrote:
> On Tue, May 21, 2024, at 22:21, Mark Brown wrote:

> It's hard (impossible) to reproduce just with fio and fp-stress. 5
> consecutive fio runs (each 40-45 seconds) without verification error
> in fio or Mismatch from fpsimd-test.

Huh, that's interesting.  I guess the I/O or multiprocess stuff that AV1
decode implies makes the scheduling more interesting?

> In the majority of cases the mismatch is reported for reg=0.

That's about what I'd expect for a "we loaded the wrong register values"
error.
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