[LTP] [bug?] LTP pt_test failing after 38bb8d77d0b9 "perf/x86/intel/pt: Split ToPA metadata and page layout"

Jan Stancek jstancek@redhat.com
Sat Oct 19 09:41:15 CEST 2019


Hi,

All variants of pt_test:
  https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/tracing/pt_test/pt_test.c
started failing after:
  38bb8d77d0b9 ("perf/x86/intel/pt: Split ToPA metadata and page layout")

with following error on console/dmesg:
  pt: ToPA ERROR encountered, trying to recover

on Broadwell-EP:

vendor_id       : GenuineIntel
cpu family      : 6
model           : 79
model name      : Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz
stepping        : 1

Regards,
Jan


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