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From: Eric Dumazet <eric.dumazet@gmail.com>
To: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
	David Ahern <dsahern@gmail.com>,
	"David S. Miller" <davem@davemloft.net>
Cc: Julian Anastasov <ja@ssi.bg>,
	Cong Wang <xiyou.wangcong@gmail.com>,
	syzbot <syzbot+30209ea299c09d8785c9@syzkaller.appspotmail.com>,
	ddstreet@ieee.org, dvyukov@google.com,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
	syzkaller-bugs@googlegroups.com
Subject: Re: unregister_netdevice: waiting for DEV to become free (2)
Date: Sat, 27 Apr 2019 16:52:31 -0700	[thread overview]
Message-ID: <057735f0-4475-7a7b-815f-034b1095fa6c@gmail.com> (raw)
In-Reply-To: <15b353e9-49a2-f08b-dc45-2e9bad3abfe2@i-love.sakura.ne.jp>



On 4/27/19 3:33 PM, Tetsuo Handa wrote:
> 
> I'm waiting for davem why it is safe to move the dst entry from
> "a device to unregister" to "a loopback device in that namespace".
> I'm waiting for an explanation how the dst entry which was moved to
> "a loopback device in that namespace" is released (i.e. what the
> expected shutdown sequence is).

The most probable explanation is that we make sure the loopback device
is the last one to be dismantled at netns deletion,
and this would obviously happen after all dst have been released.




  reply	other threads:[~2019-04-27 23:52 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-15 18:50 unregister_netdevice: waiting for DEV to become free (2) syzbot
2018-08-15 20:28 ` syzbot
2018-08-15 20:41   ` Dmitry Vyukov
2018-08-20  4:31 ` syzbot
2018-08-20 12:55   ` Julian Anastasov
2018-08-21  5:40     ` Cong Wang
2018-08-22  4:11       ` Julian Anastasov
2019-04-15 13:36     ` Tetsuo Handa
2019-04-15 15:35       ` David Ahern
2019-04-21 20:41         ` Stephen Suryaputra
2019-04-22 14:58           ` David Ahern
2019-04-22 16:04             ` Eric Dumazet
2019-04-22 16:09               ` Eric Dumazet
2019-04-16 14:00       ` Tetsuo Handa
2019-04-26 13:43         ` Tetsuo Handa
2019-04-27 17:16           ` David Ahern
2019-04-27 22:33             ` Tetsuo Handa
2019-04-27 23:52               ` Eric Dumazet [this message]
2019-04-28  4:22                 ` Tetsuo Handa
2019-04-28 15:04                   ` Eric Dumazet
2019-04-29 18:34                   ` David Ahern
2019-04-29 18:43                     ` David Ahern
2019-05-01 13:38                       ` Tetsuo Handa
2019-05-01 14:52                         ` David Ahern
2019-05-01 16:16                           ` Tetsuo Handa
2019-05-04 14:52                             ` [PATCH] ipv4: Delete uncached routes upon unregistration of loopback device Tetsuo Handa
2019-05-04 15:56                               ` Eric Dumazet
2019-05-04 17:09                                 ` Tetsuo Handa
2019-05-04 17:24                                   ` Eric Dumazet
2019-05-04 20:13                               ` Julian Anastasov
2019-11-28  9:56     ` unregister_netdevice: waiting for DEV to become free (2) Tetsuo Handa
2019-11-29  5:54       ` Lukas Bulwahn
2019-11-29  6:51       ` Jouni Högander
2019-12-05 10:00       ` Jouni Högander
2019-12-05 11:00         ` Tetsuo Handa
2019-12-16 11:12           ` Tetsuo Handa
2019-12-17  7:08             ` Jouni Högander
2019-10-11 10:14   ` Tetsuo Handa
2019-10-11 15:12     ` Alexei Starovoitov
2019-10-16 10:34       ` Toke Høiland-Jørgensen
2019-11-15  9:43         ` Tetsuo Handa
2019-11-21 11:36           ` Toke Høiland-Jørgensen

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