[PATCH v3 0/3] Add error_report_end tracepoint to KFENCE and KASAN

This patchset adds a tracepoint, error_repor_end, that is to be used by
KFENCE, KASAN, and potentially other bug detection tools, when they
print an error report.
One of the possible use cases is userspace collection of kernel error
reports: interested parties can subscribe to the tracing event via
tracefs, and get notified when an error report occurs.

v3:
 - dropped the sysfs interface for log collection
 - dropped error_report_start tracepoint

v2:
 - added ABI documentation for /sys/kernel/error_report/
 - changed error_report_start and error_report end tracepoints to take
   a fixed set of values for the error detector


Alexander Potapenko (3):
  tracing: add error_report_end trace point
  kfence: use error_report_end tracepoint
  kasan: use error_report_end tracepoint

 include/trace/events/error_report.h | 74 +++++++++++++++++++++++++++++
 kernel/trace/Makefile               |  1 +
 kernel/trace/error_report-traces.c  | 12 +++++
 mm/kasan/report.c                   |  8 ++--
 mm/kfence/report.c                  |  2 +
 5 files changed, 94 insertions(+), 3 deletions(-)
 create mode 100644 include/trace/events/error_report.h
 create mode 100644 kernel/trace/error_report-traces.c

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2.30.0.296.g2bfb1c46d8-goog