Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / tools / lib / traceevent / parse-filter.c

diff --git a/kernel/tools/lib/traceevent/parse-filter.c b/kernel/tools/lib/traceevent/parse-filter.c
index 0144b3d..88cccea 100644 (file)
--- a/kernel/tools/lib/traceevent/parse-filter.c
+++ b/kernel/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;