[SRU][Artful][Bionic][PATCH 0/1] powerpc/perf: Fix oops when grouping different pmu events

Joseph Salisbury joseph.salisbury at canonical.com
Fri Feb 2 20:50:13 UTC 2018


BugLink: http://bugs.launchpad.net/bugs/1746225

== SRU Justification ==
Due to this bug, perf fuzzer resulted in crash and system goes for a reboot
and results in a call trace shown in the bug.  It is due to grouping of 
different PMU events, which is fixed by mainline commit 5aa04b3eb6fca63d2e9827be656dcadc26d54e1
 
Commit 5aa04b3eb6fca63d2e9827be656dcadc26d54e11 is in mailine as of v4.15-rc5.
    

== Fix ==
commit 5aa04b3eb6fca63d2e9827be656dcadc26d54e11
Author: Ravi Bangoria <ravi.bangoria at linux.vnet.ibm.com>
Date:   Thu Nov 30 14:03:22 2017 +0530

    powerpc/perf: Fix oops when grouping different pmu events


== Regression Potential ==
Low.  This fix is specific to powerpc.

== Test Case ==
A test kernel was built with this patch and tested by the original bug reporter.
The bug reporter states the test kernel resolved the bug.


Ravi Bangoria (1):
  powerpc/perf: Fix oops when grouping different pmu events

 arch/powerpc/perf/core-book3s.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

-- 
2.7.4





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