Messages in this thread Patch in this message | | | From | Pingfan Liu <> | Subject | [PATCH 1/3] tracing/filter: degrade addr in filter_pred_string() from double pointer to pointer | Date | Fri, 7 Jan 2022 12:49:49 +0800 |
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Since FILTER_PTR_STRING has the type of "char *", it is meaningless to convert it to "char **". Hence degrading addr from double pointer to single.
Signed-off-by: Pingfan Liu <kernelfans@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@redhat.com> To: linux-kernel@vger.kernel.org --- kernel/trace/trace_events_filter.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index c9124038b140..264456e1698f 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -670,11 +670,11 @@ static int filter_pred_string(struct filter_pred *pred, void *event) /* Filter predicate for char * pointers */ static int filter_pred_pchar(struct filter_pred *pred, void *event) { - char **addr = (char **)(event + pred->offset); + char *addr = (char *)(event + pred->offset); int cmp, match; - int len = strlen(*addr) + 1; /* including tailing '\0' */ + int len = strlen(addr) + 1; /* including tailing '\0' */ - cmp = pred->regex.match(*addr, &pred->regex, len); + cmp = pred->regex.match(addr, &pred->regex, len); match = cmp ^ pred->not; -- 2.31.1
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