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tracing/filters: Fix MATCH_MIDDLE_ONLY filter matching 

The @str might not be NULL-terminated if it's of type
DYN_STRING or STATIC_STRING, so we should use strnstr()
instead of strstr().

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4B4E8753.2000102@cn.fujitsu.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
hifive-unleashed-5.1
Li Zefan 2010-01-14 10:54:11 +08:00 committed by Steven Rostedt
parent d5f1fb5335
commit b2af211f28
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/trace_events_filter.c
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@ -268,7 +268,7 @@ static int regex_match_front(char *str, struct regex *r, int len)
static int regex_match_middle(char *str, struct regex *r, int len)
{
if (strstr(str, r->pattern))
if (strnstr(str, r->pattern, len))
return 1;
return 0;
}