Commit 1f37070d authored by Stephen Hemminger's avatar Stephen Hemminger Committed by David S. Miller
Browse files

dst: catch uninitialized metrics 



Catch cases where dst_metric_set() and other functions are called
but _metrics is NULL.

Signed-off-by: default avatarStephen Hemminger <shemminger@vyatta.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5d8bee67

include/net/dst.h

+2 −0
Original line number Diff line number Diff line
@@ -111,6 +111,8 @@ static inline u32 *dst_metrics_write_ptr(struct dst_entry *dst) 
{

	unsigned long p = dst->_metrics;



	BUG_ON(!p);



	if (p & DST_METRICS_READ_ONLY)

		return dst->ops->cow_metrics(dst, p);

	return __DST_METRICS_PTR(p);