net: use u64_stats_t in struct pcpu_lstats
In order to fix the data-race found by KCSAN, we
can use the new u64_stats_t type and its accessors instead
of plain u64 fields. This will still generate optimal code
for both 32 and 64 bit platforms.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index 47ad247..a1c77cc 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -106,8 +106,8 @@ void dev_lstats_read(struct net_device *dev, u64 *packets, u64 *bytes)
lb_stats = per_cpu_ptr(dev->lstats, i);
do {
start = u64_stats_fetch_begin_irq(&lb_stats->syncp);
- tpackets = lb_stats->packets;
- tbytes = lb_stats->bytes;
+ tpackets = u64_stats_read(&lb_stats->packets);
+ tbytes = u64_stats_read(&lb_stats->bytes);
} while (u64_stats_fetch_retry_irq(&lb_stats->syncp, start));
*bytes += tbytes;
*packets += tpackets;
