From: ebiederm@xmission.com (Eric W. Biederman)
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David Miller <davem@davemloft.net>,
edumazet@google.com, jiri@resnulli.us,
alexander.h.duyck@intel.com, amwang@redhat.com,
netdev@vger.kernel.org, fruggeri@aristanetworks.com
Subject: Re: [PATCH net-next] net loopback: Set loopback_dev to NULL when freed
Date: Mon, 16 Sep 2013 18:52:27 -0700 [thread overview]
Message-ID: <87k3igcizo.fsf@xmission.com> (raw)
In-Reply-To: <1379382102.4751.2.camel@edumazet-glaptop> (Eric Dumazet's message of "Mon, 16 Sep 2013 18:41:42 -0700")
Eric Dumazet <eric.dumazet@gmail.com> writes:
> On Mon, 2013-09-16 at 21:34 -0400, David Miller wrote:
>> From: Eric Dumazet <eric.dumazet@gmail.com>
>> Date: Mon, 16 Sep 2013 17:50:51 -0700
>>
>> > On Mon, 2013-09-16 at 16:52 -0700, Eric W. Biederman wrote:
>> >> It has recently turned up that we have a number of long standing bugs
>> >> in the network stack cleanup code with use of the loopback device
>> >> after it has been freed that have not turned up because in most cases
>> >> the storage allocated to the loopback device is not reused, when those
>> >> accesses happen.
>> >>
>> >> Set looback_dev to NULL to trigger oopses instead of silent data corrupt
>> >> when we hit this class of bug.
>> >>
>> >> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
>> >> ---
>> >
>> > Acked-by: Eric Dumazet <edumazet@google.com>
>>
>> I'd like to apply this to 'net', any objections?
>
> No objections from me.
No objects from me I just hadn't seen it as a bug fix, but I guess it
sort of is.
Eric
next prev parent reply other threads:[~2013-09-17 1:52 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1379008796-2121-1-git-send-email-fruggeri@aristanetworks.com>
2013-09-12 20:06 ` [PATCH 1/1] net: race condition when removing virtual net_device Eric W. Biederman
2013-09-12 21:48 ` Francesco Ruggeri
2013-09-12 22:02 ` Francesco Ruggeri
2013-09-13 5:50 ` Eric W. Biederman
2013-09-13 17:54 ` Francesco Ruggeri
2013-09-14 1:46 ` Eric W. Biederman
2013-09-16 2:54 ` Francesco Ruggeri
2013-09-16 10:45 ` Eric W. Biederman
2013-09-16 20:30 ` Francesco Ruggeri
2013-09-16 23:52 ` [PATCH net-next] net loopback: Set loopback_dev to NULL when freed Eric W. Biederman
2013-09-17 0:50 ` Eric Dumazet
2013-09-17 1:34 ` David Miller
2013-09-17 1:41 ` Eric Dumazet
2013-09-17 1:52 ` Eric W. Biederman [this message]
2013-09-17 23:05 ` David Miller
2013-09-17 0:25 ` [PATCH 1/1] net: race condition when removing virtual net_device Eric W. Biederman
2013-09-17 5:12 ` Francesco Ruggeri
2013-09-17 3:49 ` [CFT][PATCH] net: Delay default_device_exit_batch until no devices are unregistering Eric W. Biederman
2013-09-17 6:54 ` Francesco Ruggeri
2013-09-17 9:38 ` Eric W. Biederman
2013-09-17 17:14 ` Francesco Ruggeri
2013-09-17 23:21 ` David Miller
2013-09-17 23:41 ` Eric W. Biederman
2013-09-18 0:15 ` David Miller
2013-09-18 3:50 ` Francesco Ruggeri
2013-09-18 3:52 ` David Miller
2013-09-18 8:19 ` Eric W. Biederman
2013-09-20 16:34 ` Francesco Ruggeri
2013-09-24 4:19 ` [PATCH] net: Delay default_device_exit_batch until no devices are unregistering v2 Eric W. Biederman
2013-09-24 17:54 ` Francesco Ruggeri
2013-09-28 22:14 ` David Miller
2013-09-14 0:16 ` [PATCH 1/1] net: race condition when removing virtual net_device David Miller
2013-09-14 1:32 ` Eric W. Biederman
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