[PATCH v1 00/11] perf: Fix errors detected by Smatch

[Leo Yan]

When I used static checker Smatch for perf building, the main target is
to check if there have any potential issues in Arm cs-etm code.  So
finally I get many reporting for errors/warnings.

I used below command for using static checker with perf building:

  # make VF=1 CORESIGHT=1 -C tools/perf/ \
    CHECK="/root/Work/smatch/smatch --full-path" \
    CC=/root/Work/smatch/cgcc | tee smatch_reports.txt

I reviewed the errors one by one, if I understood some of these errors
so changed the code as I can, this patch set is the working result; but
still leave some errors due to I don't know what's the best way to fix
it.  There also have many inconsistent indenting warnings.  So I firstly
send out this patch set and let's see what's the feedback from public
reviewing.

Leo Yan (11):
  perf report: Smatch: Fix potential NULL pointer dereference
  perf stat: Smatch: Fix use-after-freed pointer
  perf top: Smatch: Fix potential NULL pointer dereference
  perf annotate: Smatch: Fix dereferencing freed memory
  perf trace: Smatch: Fix potential NULL pointer dereference
  perf hists: Smatch: Fix potential NULL pointer dereference
  perf map: Smatch: Fix potential NULL pointer dereference
  perf session: Smatch: Fix potential NULL pointer dereference
  perf intel-bts: Smatch: Fix potential NULL pointer dereference
  perf intel-pt: Smatch: Fix potential NULL pointer dereference
  perf cs-etm: Smatch: Fix potential NULL pointer dereference

 tools/perf/builtin-report.c    |  4 ++--
 tools/perf/builtin-stat.c      |  2 +-
 tools/perf/builtin-top.c       |  8 ++++++--
 tools/perf/builtin-trace.c     |  5 +++--
 tools/perf/ui/browsers/hists.c | 13 +++++++++----
 tools/perf/util/annotate.c     |  6 ++----
 tools/perf/util/cs-etm.c       |  2 +-
 tools/perf/util/intel-bts.c    |  5 ++---
 tools/perf/util/intel-pt.c     |  5 ++---
 tools/perf/util/map.c          |  7 +++++--
 tools/perf/util/session.c      |  3 +++
 11 files changed, 36 insertions(+), 24 deletions(-)

-- 
2.17.1