The callchain rbtree is rebuilt periodically, so it needs to reinitialize the root everytime. Otherwise it can be stuck in the rbtree insertion with stale pointers.
Signed-off-by: Namhyung Kim <namhy...@kernel.org> --- tools/perf/util/callchain.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index fc3b1e0d09ee..564377d2bebf 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -290,6 +290,7 @@ static void sort_chain_flat(struct rb_root *rb_root, struct callchain_root *root, u64 min_hit, struct callchain_param *param __maybe_unused) { + *rb_root = RB_ROOT; __sort_chain_flat(rb_root, &root->node, min_hit); } -- 2.6.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/