netdev - Re: Bisect'ed BUG in VLAN promisc mode (6c78dcbd47)

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Message-ID: <48DD36D2.90103@trash.net>
Date:	Fri, 26 Sep 2008 21:24:02 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	jdb@...x.dk
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: Bisect'ed BUG in VLAN promisc mode (6c78dcbd47)

Jesper Dangaard Brouer wrote:
> On Fri, 2008-09-26 at 18:14 +0200, Patrick McHardy wrote:
>> Jesper Dangaard Brouer wrote:
>>> Hi Patrick,
>>>
>>> Bisected me down to one of you changes
>>>  commit 6c78dcbd47a68a
>>>  [VLAN]: Fix promiscous/allmulti synchronization races
>>>
>>> Description:
>>> ------------
>>>  All other VLAN interfaces stop working, if a vlan is taken down
>>>  (ifconfig eth1.1025 down) _while_ there is a tcpdump running on that
>>>  interface.
>>>
>>>  The problem is a result of promisc mode being removed on the
>>>  real-device (eth1), when the vlan interface is taken down.  This
>>>  should not happen as other vlan devices exists that still need
>>>  promisc mode on the real-device (eth1).
>> I'm pretty sure we fixed this already in commit 0ed21b32.
> 
> I think that I have tested including this commit.  The first thing I did
> was to test with latest DaveM net-2.6 git tree.

Let me see if I can reproduce it ...
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