[PATCH v2 0/3] dso__data asan and test fixes

[Ian Rogers]

The dso__data logic could deadlock with itself when build with asan or
reference count checking due to trying to recurively take a
non-recursive mutex. Use clang's thread safety analysis to find/fix
the problem. Running the tests would fail with -F no-fork mode as a
file descriptor wasn't cleaned up.

v2: Remove an unnecessary if as suggested by Namhyung.

Ian Rogers (3):
  perf mutex: Add annotations for LOCKS_EXCLUDED and LOCKS_RETURNED
  perf dso: Use lock annotations to fix asan deadlock
  perf test dso-data: Correctly free test file in read test

 tools/perf/tests/dso-data.c              | 28 ++++-----
 tools/perf/util/dso.c                    | 74 +++++++++++++++---------
 tools/perf/util/dso.h                    | 15 +++--
 tools/perf/util/mutex.h                  |  8 +++
 tools/perf/util/unwind-libunwind-local.c | 16 ++---
 5 files changed, 86 insertions(+), 55 deletions(-)

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2.49.0.rc1.451.g8f38331e32-goog