Commit 41e51a28 authored by Namhyung Kim's avatar Namhyung Kim Committed by Arnaldo Carvalho de Melo

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: default avatarNamhyung 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.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 1bce6e0f
...@@ -1719,6 +1719,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok) ...@@ -1719,6 +1719,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok)
arg->op.left = left; arg->op.left = left;
arg->op.prio = 0; arg->op.prio = 0;
/* it will set arg->op.right */
type = process_cond(event, arg, tok); type = process_cond(event, arg, tok);
} else if (strcmp(token, ">>") == 0 || } else if (strcmp(token, ">>") == 0 ||
...@@ -1745,6 +1746,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok) ...@@ -1745,6 +1746,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok)
arg->type = PRINT_OP; arg->type = PRINT_OP;
arg->op.op = token; arg->op.op = token;
arg->op.left = left; arg->op.left = left;
arg->op.right = NULL;
if (set_op_prio(arg) == -1) { if (set_op_prio(arg) == -1) {
event->flags |= EVENT_FL_FAILED; event->flags |= EVENT_FL_FAILED;
...@@ -1792,6 +1794,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok) ...@@ -1792,6 +1794,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok)
arg->op.prio = 0; arg->op.prio = 0;
/* it will set arg->op.right */
type = process_array(event, arg, tok); type = process_array(event, arg, tok);
} else { } else {
......
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