Unverified Commit 24d3440b authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!6895 tun: limit printing rate when illegal packet received by tun dev 

Merge Pull Request from: @ci-robot 
 
PR sync from: Liu Jian <liujian56@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/NGJGDRI7ZUU37DUO26CC3TOUBFN5WAAS/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9L4OR 
 
Link:https://gitee.com/openeuler/kernel/pulls/6895

 

Reviewed-by: default avatarYue Haibing <yuehaibing@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents a817551c 2f9bcb58

drivers/net/tun.c

+10 −8
Original line number Diff line number Diff line
@@ -2140,14 +2140,16 @@ static ssize_t tun_put_user(struct tun_struct *tun, 
					    tun_is_little_endian(tun), true,

					    vlan_hlen)) {

			struct skb_shared_info *sinfo = skb_shinfo(skb);

			pr_err("unexpected GSO type: "

			       "0x%x, gso_size %d, hdr_len %d\n",



			if (net_ratelimit()) {

				netdev_err(tun->dev, "unexpected GSO type: 0x%x, gso_size %d, hdr_len %d\n",

					   sinfo->gso_type, tun16_to_cpu(tun, gso.gso_size),

					   tun16_to_cpu(tun, gso.hdr_len));

				print_hex_dump(KERN_ERR, "tun: ",

					       DUMP_PREFIX_NONE,

					       16, 1, skb->head,

					       min((int)tun16_to_cpu(tun, gso.hdr_len), 64), true);

			}

			WARN_ON_ONCE(1);

			return -EINVAL;

		}