Commit-ID: ee021d42238daadc7ba49274bb0ba7dff219c6ab Gitweb: http://git.kernel.org/tip/ee021d42238daadc7ba49274bb0ba7dff219c6ab Author: Arnaldo Carvalho de Melo <[email protected]> AuthorDate: Tue, 10 Dec 2013 15:26:55 -0300 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Tue, 10 Dec 2013 16:51:10 -0300
perf symbols: Set freed members to NULL in dso destructor To help in debugging use after free bugs. Reported-by: Ingo Molnar <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/util/dso.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 2c7e189..19babb0 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); } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
