From: Namhyung Kim <[email protected]> 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 <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Steven Rostedt <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- 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 6270ee2..27088c5 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 { -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
