[PATCH v3 1/2] arm64: Handle kernel BTI exceptions

[Mark Brown]

On Thu, Sep 01, 2022 at 05:15:50PM -0700, D Scott Phillips wrote:

> Send BTI exceptions to the do_bti handler, killing the current task with
> SIGSEGV instead of panicking. This is to allow a later patch to apply a
> compiler bug workaround.

There's arguments either way here - this is less destructive, but you
could say that since these exceptions are supposed to indicate a
security issue stopping the whole kernel has some safety advantages,
though it does also open up DoS opportunities.  I don't have a strong
opinion here, I mildly prefer this approach.

Reviewed-by: Mark Brown <broonie at kernel.org>
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