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| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-12-10 15:26:55 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-12-10 16:51:10 -0300 |
| commit | ee021d42238daadc7ba49274bb0ba7dff219c6ab (patch) | |
| tree | 204b65fc9b3543e090ce762796853f1cf2018e21 /tools/perf | |
| parent | perf symbols: Constify dso->long_name (diff) | |
| download | linux-dev-ee021d42238daadc7ba49274bb0ba7dff219c6ab.tar.xz linux-dev-ee021d42238daadc7ba49274bb0ba7dff219c6ab.zip | |
perf symbols: Set freed members to NULL in dso destructor
To help in debugging use after free bugs.
Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-3ckwsob2g1q23s77nuhexrq7@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/dso.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 2c7e1899a735..19babb0d365d 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -475,13 +475,23 @@ void dso__delete(struct dso *dso) int i; for (i = 0; i < MAP__NR_TYPES; ++i) symbols__delete(&dso->symbols[i]); - if (dso->short_name_allocated) + + if (dso->short_name_allocated) { free((char *)dso->short_name); - if (dso->long_name_allocated) + dso->short_name = NULL; + dso->short_name_allocated = false; + } + + if (dso->long_name_allocated) { free((char *)dso->long_name); + dso->long_name = NULL; + dso->long_name_allocated = false; + } + dso_cache__free(&dso->cache); dso__free_a2l(dso); free(dso->symsrc_filename); + dso->symsrc_filename = NULL; free(dso); } |