netdev - Re: [PATCH net-next] ipv6: ioam: Support for Queue depth data field

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Date:   Fri, 24 Dec 2021 13:33:43 +0100 (CET)
From:   Justin Iurman <justin.iurman@...ege.be>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, dsahern@...nel.org,
        yoshfuji@...ux-ipv6.org
Subject: Re: [PATCH net-next] ipv6: ioam: Support for Queue depth data field

On Dec 24, 2021, at 4:28 AM, Jakub Kicinski kuba@...nel.org wrote:
> On Thu, 23 Dec 2021 16:55:15 +0100 Justin Iurman wrote:
>> +		} else {
>> +			queue = skb_get_tx_queue(skb_dst(skb)->dev, skb);
>> +			qdisc_qstats_qlen_backlog(queue->qdisc, &qlen, &backlog);
>> +
>> +			*(__be32 *)data = cpu_to_be32(qlen);
>> +		}
>>  		data += sizeof(__be32);
>>  	}
>>  
> 
> sparse complains that:
> 
> net/ipv6/ioam6.c:729:56: warning: incorrect type in argument 1 (different
> address spaces)
> net/ipv6/ioam6.c:729:56:    expected struct Qdisc *sch
> net/ipv6/ioam6.c:729:56:    got struct Qdisc [noderef] __rcu *qdisc

Thanks for reporting, I indeed forgot to run sparse. I'm surprised the
bot did not report it, though. Sorry for that, will fix this in -v2.