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authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>2016-02-09 23:40:16 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-03-03 17:10:38 +0300
commit9ec72eafee61f68cd57310a99db129ffb71302f3 (patch)
tree44c814b7d977765424c15eda214be62cb58a5844
parent21a30100453516004905d4d5f0806ebaffa95131 (diff)
downloadlinux-9ec72eafee61f68cd57310a99db129ffb71302f3.tar.xz
tools lib traceevent: Set int_array fields to NULL if freeing from error
Had a bug where on error of parsing __print_array() where the fields are freed after they were allocated, but since they were not set to NULL, the freeing of the arg also tried to free the already freed fields causing a double free. Fix process_hex() while at it. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20160209204237.188327674@goodmis.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/lib/traceevent/event-parse.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index ce59f4891fa2..fb790aa757eb 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -2635,6 +2635,7 @@ process_hex(struct event_format *event, struct print_arg *arg, char **tok)
free_field:
free_arg(arg->hex.field);
+ arg->hex.field = NULL;
out:
*tok = NULL;
return EVENT_ERROR;
@@ -2659,8 +2660,10 @@ process_int_array(struct event_format *event, struct print_arg *arg, char **tok)
free_size:
free_arg(arg->int_array.count);
+ arg->int_array.count = NULL;
free_field:
free_arg(arg->int_array.field);
+ arg->int_array.field = NULL;
out:
*tok = NULL;
return EVENT_ERROR;