From: ebiederm@xmission.com (Eric W. Biederman)
To: David Miller <davem@davemloft.net>
Cc: eric.dumazet@gmail.com, xemul@parallels.com,
sjur.brandeland@stericsson.com, levinsasha928@gmail.com,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
davej@redhat.com, sjurbren@gmail.com
Subject: Re: [PATCH] netns: fix net_alloc_generic()
Date: Thu, 26 Jan 2012 15:57:18 -0800 [thread overview]
Message-ID: <m1liouc90h.fsf@fess.ebiederm.org> (raw)
In-Reply-To: <20120126.180754.679593869814492219.davem@davemloft.net> (David Miller's message of "Thu, 26 Jan 2012 18:07:54 -0500 (EST)")
David Miller <davem@davemloft.net> writes:
> From: ebiederm@xmission.com (Eric W. Biederman)
> Date: Thu, 26 Jan 2012 14:57:02 -0800
>
>> It is not a chicken and egg problem. It is a bug in caif.
>> caif is claiming to be a network device when it is acting as a subsytem.
>> That means it is being initialized too late.
>>
>> Untested but this should trivially fix the problem, and a bunch
>> of others of the same ilk.
>>
>> It is not safe to shutdown subsystems until all of the devices
>> are gone, otherwise there will be problems with packets in flight.
>
> If you guys can agree that this is the better fix, and we can
> get testing showing that it works, I'll revert Eric D.'s patch
> and apply the final version of this one.
Eric D.'s change is correct, but it is just an optimization of
net_assign_generic. Eric D.'s change is not a bug fix.
Tested fix in a moment.
Eric
next prev parent reply other threads:[~2012-01-26 23:54 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-24 7:30 [PATCH] net: caif: Don't act on notification for non-caif devices Sasha Levin
2012-01-24 10:52 ` Sjur Brændeland
2012-01-24 14:49 ` Sasha Levin
2012-01-24 15:06 ` Sjur Brændeland
2012-01-24 15:23 ` Sasha Levin
2012-01-24 22:27 ` [PATCH net] caif: Fix crash due to uninitialized net name-space Sjur Brændeland
2012-01-24 22:44 ` David Miller
2012-01-25 16:13 ` Sasha Levin
2012-01-25 20:33 ` Sjur Brændeland
2012-01-26 6:14 ` Eric Dumazet
2012-01-26 10:41 ` [PATCH] netns: fix net_alloc_generic() Eric Dumazet
2012-01-26 10:44 ` Pavel Emelyanov
2012-01-26 10:51 ` Eric Dumazet
2012-01-26 22:57 ` Eric W. Biederman
2012-01-26 23:07 ` David Miller
2012-01-26 23:57 ` Eric W. Biederman [this message]
2012-01-27 0:02 ` [PATCH 1/2] netns: Fail conspicously if someone uses net_generic at an inappropriate time Eric W. Biederman
2012-01-27 0:04 ` [PATCH 2/2] net caif: Register properly as a pernet subsystem Eric W. Biederman
2012-01-27 13:24 ` Sasha Levin
2012-01-27 14:48 ` Sjur BRENDELAND
2012-01-28 2:07 ` David Miller
2012-01-28 2:07 ` [PATCH 1/2] netns: Fail conspicously if someone uses net_generic at an inappropriate time David Miller
2012-01-27 6:09 ` [PATCH] netns: fix net_alloc_generic() Eric Dumazet
2012-01-27 6:54 ` Eric W. Biederman
2012-01-27 7:07 ` Eric Dumazet
2012-01-26 14:40 ` Sasha Levin
2012-01-26 18:37 ` David Miller
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