Merge branch 'for_3.0/pm-fixes' of ssh://master.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / include / net / dst.h

diff --git a/include/net/dst.h b/include/net/dst.h
index 07a0402..7d15d23 100644 (file)
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -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);