From: Maninder Singh <maninder1.s@samsung.com>
To: Daniel Borkmann <daniel@iogearbox.net>,
Vaneet Narang <v.narang@samsung.com>
Cc: "davem@davemloft.net" <davem@davemloft.net>,
"willemb@google.com" <willemb@google.com>,
"edumazet@google.com" <edumazet@google.com>,
"eyal.birger@gmail.com" <eyal.birger@gmail.com>,
"tklauser@distanz.ch" <tklauser@distanz.ch>,
"fruggeri@aristanetworks.com" <fruggeri@aristanetworks.com>,
"dwmw2@infradead.org" <dwmw2@infradead.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
PANKAJ MISHRA <pankaj.m@samsung.com>,
Geon-ho Kim <gh007.kim@samsung.com>,
Hak-Bong Lee <hakbong5.lee@samsung.com>
Subject: Re: [PATCH] af_packet: Raw socket destruction warning fix
Date: Thu, 21 Jan 2016 11:40:14 +0000 (GMT) [thread overview]
Message-ID: <2036003091.741801453376409338.JavaMail.weblogic@ep2mlwas01a> (raw)
Hi Daniel,
>The other sock_put() in packet_release() to drop the final ref and call into
>sk_free(), which drops the 1 ref on the sk_wmem_alloc from init time. Since you
>got into __sk_free() via sock_wfree() destructor, your socket must have invoked
>packet_release() prior to this (perhaps kernel destroying the process).
>
>What kernel do you use?
Issue is coming for 3.10.58.
>> Driver calls dev_kfree_skb_any->dev_kfree_skb_irq
>> and it adds buffer in completion queue to free and raises softirq NET_TX_SOFTIRQ
>>
>> net_tx_action->__kfree_skb->skb_release_all->skb_release_head_state->sock_wfree->
>> __sk_free->packet_sock_destruct
>>
>> Also purging of receive queue has been taken care in other protocols.
next reply other threads:[~2016-01-21 11:40 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-21 11:40 Maninder Singh [this message]
2016-01-26 0:13 ` [PATCH] af_packet: Raw socket destruction warning fix Daniel Borkmann
-- strict thread matches above, loose matches on Subject: below --
2016-02-10 12:43 Vaneet Narang
2016-02-10 14:56 ` Eric Dumazet
2016-02-05 5:23 Vaneet Narang
2016-01-18 10:11 Vaneet Narang
2016-01-18 11:08 ` Daniel Borkmann
2016-01-18 6:37 Maninder Singh
2016-01-18 9:44 ` Daniel Borkmann
2016-01-18 10:29 ` Daniel Borkmann
2016-02-05 11:26 ` Eric Dumazet
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