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bug in profile feedback optimization; found by dirt@monkey

This commit is contained in:
provos 2003-03-25 22:48:42 +00:00
parent 7576a124b2
commit 887e433ee2
1 changed files with 3 additions and 2 deletions
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5
bin/systrace/filter.c
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@ -1,4 +1,4 @@
/* $NetBSD: filter.c,v 1.15 2002/11/25 06:25:09 provos Exp $ */
/* $NetBSD: filter.c,v 1.16 2003/03/25 22:48:43 provos Exp $ */
/* $OpenBSD: filter.c,v 1.16 2002/08/08 21:18:20 provos Exp $ */
/*
* Copyright 2002 Niels Provos <provos@citi.umich.edu>
@ -30,7 +30,7 @@
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: filter.c,v 1.15 2002/11/25 06:25:09 provos Exp $");
__RCSID("$NetBSD: filter.c,v 1.16 2003/03/25 22:48:43 provos Exp $");
#include <sys/param.h>
#include <sys/types.h>
@ -167,6 +167,7 @@ filter_evaluate(struct intercept_tlq *tls, struct filterq *fls,
/* Profile feedback optimization */
filter->match_count++;
if (last != NULL && last->match_action == action &&
last->match_flags == filter->match_flags &&
filter->match_count > last->match_count) {
TAILQ_REMOVE(fls, last, next);
TAILQ_INSERT_AFTER(fls, filter, last, next);