From a3291c14ecf0a995e30d993b7f2cae031de98727 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Thu, 14 Jan 2010 10:53:41 +0800 Subject: [PATCH] tracing/filters: Fix MATCH_END_ONLY filter matching For '*foo' pattern, we should allow any string ending with 'foo', but event filtering incorrectly disallows strings like bar_foo_foo: Signed-off-by: Li Zefan LKML-Reference: <4B4E8735.6070604@cn.fujitsu.com> Acked-by: Frederic Weisbecker Signed-off-by: Steven Rostedt --- kernel/trace/trace_events_filter.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index 11c3973e6552..49e44dd17851 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -275,9 +275,10 @@ static int regex_match_middle(char *str, struct regex *r, int len) static int regex_match_end(char *str, struct regex *r, int len) { - char *ptr = strstr(str, r->pattern); + int strlen = len - 1; - if (ptr && (ptr[r->len] == 0)) + if (strlen >= r->len && + memcmp(str + strlen - r->len, r->pattern, r->len) == 0) return 1; return 0; }