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Add kfence.fault parameter to control the behavior when a KFENCE error is detected (similar in spirit to kasan.fault=<mode>). The supported modes for kfence.fault=<mode> are: - report: print the error report and continue (default). - oops: print the error report and oops. - panic: print the error report and panic. In particular, the 'oops' mode offers a trade-off between no mitigation on report and panicking outright (if panic_on_oops is not set). Link: https://lkml.kernel.org/r/20260225203639.3159463-1-elver@google.com Signed-off-by: Marco Elver <elver@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kees Cook <kees@kernel.org> Cc: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>