From 0ac2058f686a19fe8ab25c4f3104fc1580dce7cf Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Mon, 15 Jun 2009 10:59:17 +0800 Subject: tracing/filters: strloc should be unsigned short I forgot to update filter code accordingly in "tracing/events: change the type of __str_loc_item to unsigned short" (commt b0aae68cc5508f3c2fbf728988c954db4c8b8a53) It can cause system crash: # echo 1 > tracing/events/irq/irq_handler_entry/enable # echo 'name == eth0' > tracing/events/irq/irq_handler_entry/filter [ Impact: fix crash while filtering on __string() field ] Acked-by: Frederic Weisbecker Signed-off-by: Li Zefan LKML-Reference: <4A35B905.3090500@cn.fujitsu.com> Signed-off-by: Steven Rostedt --- kernel/trace/trace_events_filter.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index 1d8192304842..b24ab0e6ea74 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -178,7 +178,7 @@ static int filter_pred_string(struct filter_pred *pred, void *event, static int filter_pred_strloc(struct filter_pred *pred, void *event, int val1, int val2) { - int str_loc = *(int *)(event + pred->offset); + unsigned short str_loc = *(unsigned short *)(event + pred->offset); char *addr = (char *)(event + str_loc); int cmp, match; -- cgit v1.2.2