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-rw-r--r--net/packet/af_packet.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 71ac6559e0c6..8a10d5b3c832 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1475,7 +1475,7 @@ static int packet_sendmsg_spkt(struct kiocb *iocb, struct socket *sock,
* Find the device first to size check it
*/
- saddr->spkt_device[13] = 0;
+ saddr->spkt_device[sizeof(saddr->spkt_device) - 1] = 0;
retry:
rcu_read_lock();
dev = dev_get_by_name_rcu(sock_net(sk), saddr->spkt_device);