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-rw-r--r--tools/lib/traceevent/parse-filter.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/lib/traceevent/parse-filter.c b/tools/lib/traceevent/parse-filter.c
index 0144b3d1bb77..88cccea3ca99 100644
--- a/tools/lib/traceevent/parse-filter.c
+++ b/tools/lib/traceevent/parse-filter.c
@@ -1164,11 +1164,11 @@ process_filter(struct event_format *event, struct filter_arg **parg,
current_op = current_exp;
ret = collapse_tree(current_op, parg, error_str);
+ /* collapse_tree() may free current_op, and updates parg accordingly */
+ current_op = NULL;
if (ret < 0)
goto fail;
- *parg = current_op;
-
free(token);
return 0;