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authorNamhyung Kim <namhyung.kim@lge.com>2012-09-19 15:58:42 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-09-24 12:01:21 -0300
commit41e51a289b3ca83e08395213f4488c9c7c6b2e29 (patch)
treee8d95edbf3b620a013744668e31dce041bd56acd /tools/lib
parent1bce6e0fec28434fd66de585773a14bf4d2c3715 (diff)
downloadlinux-linaro-stable-41e51a289b3ca83e08395213f4488c9c7c6b2e29.tar.gz
tools lib traceevent: Make sure that arg->op.right is set properly
When process_op failed, @arg will be freed on a caller with type of PRINT_OP. Thus free_arg() will try to free ->op.right field which can have stale value if something bad happens in the middle. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1348037924-17568-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib')
-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 6270ee2e9830..27088c55af1b 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -1719,6 +1719,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok)
arg->op.left = left;
arg->op.prio = 0;
+ /* it will set arg->op.right */
type = process_cond(event, arg, tok);
} else if (strcmp(token, ">>") == 0 ||
@@ -1745,6 +1746,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok)
arg->type = PRINT_OP;
arg->op.op = token;
arg->op.left = left;
+ arg->op.right = NULL;
if (set_op_prio(arg) == -1) {
event->flags |= EVENT_FL_FAILED;
@@ -1792,6 +1794,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok)
arg->op.prio = 0;
+ /* it will set arg->op.right */
type = process_array(event, arg, tok);
} else {