On 11/11/18 9:25 AM, Omar Sandoval wrote:
From: Omar Sandoval <[email protected]>

When copying to the latency type, we should be passing LATENCY_TYPE_LEN,
not DOMAIN_LEN. This isn't a problem in practice because we only pass
"total" or "I/O", but let's fix it.

Reported-by: Jordan Glover <[email protected]>
Signed-off-by: Omar Sandoval <[email protected]>
---
  include/trace/events/kyber.h | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/trace/events/kyber.h b/include/trace/events/kyber.h
index a9834c37ac40..7aaa298375ad 100644
--- a/include/trace/events/kyber.h
+++ b/include/trace/events/kyber.h
@@ -32,7 +32,7 @@ TRACE_EVENT(kyber_latency,
        TP_fast_assign(
                __entry->dev         = 
disk_devt(dev_to_disk(kobj_to_dev(q->kobj.parent)));
                strlcpy(__entry->domain, domain, DOMAIN_LEN);
-               strlcpy(__entry->type, type, DOMAIN_LEN);
+               strlcpy(__entry->type, type, LATENCY_TYPE_LEN);
                __entry->percentile  = percentile;
                __entry->numerator   = numerator;
                __entry->denominator = denominator;

Can both strlcpy() invocations be changed such that the third argument is a sizeof() expression instead of an explicit constant? I think that would make the Kyber tracing code easier to verify for humans.

Thanks,

Bart.

Reply via email to