2019-10-19 09:54:58

by Jan Stancek

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

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