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| author | Namhyung Kim <namhyung.kim@lge.com> | 2012-09-19 15:58:42 +0900 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-09-24 12:01:21 -0300 |
| commit | 41e51a289b3ca83e08395213f4488c9c7c6b2e29 (patch) | |
| tree | e8d95edbf3b620a013744668e31dce041bd56acd /tools/lib | |
| parent | 1bce6e0fec28434fd66de585773a14bf4d2c3715 (diff) | |
| download | lwn-41e51a289b3ca83e08395213f4488c9c7c6b2e29.tar.gz lwn-41e51a289b3ca83e08395213f4488c9c7c6b2e29.zip | |
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.c | 3 |
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 { |