On Thu, Jun 20, 2013 at 11:29 AM, Eric Dumazet wrote:
> On Thu, 2013-06-20 at 15:00 +0800, xiaoming gao wrote:
>
>> HI Eric
>> the problem is as follow:
>> br_del_if()-->del_nbp():
>>
>> list_del_rcu(>list);
>> dev->priv_flags &= ~IFF_BRIDGE_PORT;
>>
>> -->at this point, the nic be deleting
On Thu, Jun 20, 2013 at 11:29 AM, Eric Dumazet eric.duma...@gmail.com wrote:
On Thu, 2013-06-20 at 15:00 +0800, xiaoming gao wrote:
HI Eric
the problem is as follow:
br_del_if()--del_nbp():
list_del_rcu(p-list);
dev-priv_flags = ~IFF_BRIDGE_PORT;
--at this point, the nic be deleting
On Thu, 2013-06-20 at 15:47 +0800, xiaoming gao wrote:
>
> if you remove the test on FF_BRIDGE_PORT, and br_port_get_rcu never returns
> NULL, the problem is fixed.
> but the codes in mainline is still bugged, am i right??
> by the way, kernel-stable 3.0 and 3.4 tree also have this bug, and is
Eric Dumazet said, at 2013-6-20 15:29:
> On Thu, 2013-06-20 at 15:00 +0800, xiaoming gao wrote:
>
>> HI Eric
>> the problem is as follow:
>> br_del_if()-->del_nbp():
>>
>> list_del_rcu(>list);
>> dev->priv_flags &= ~IFF_BRIDGE_PORT;
>>
>> -->at this point, the nic be deleting still have
On Thu, 2013-06-20 at 15:00 +0800, xiaoming gao wrote:
> HI Eric
> the problem is as follow:
> br_del_if()-->del_nbp():
>
> list_del_rcu(>list);
> dev->priv_flags &= ~IFF_BRIDGE_PORT;
>
> -->at this point, the nic be deleting still have rx_handler , so , may in
> br_handle_frame()
>
Eric Dumazet said, at 2013-6-20 12:55:
> On Thu, 2013-06-20 at 11:08 +0800, xiaoming gao wrote:
>> From: newtongao
>> Date: Wed, 19 Jun 2013 14:58:33 +0800
>> Subject: [PATCH] net bridge: add null pointer check,fix panic
>>
>> in kernel 3.0, br_port_get_r
Eric Dumazet said, at 2013-6-20 12:55:
On Thu, 2013-06-20 at 11:08 +0800, xiaoming gao wrote:
From: newtongao newton...@tencent.com
Date: Wed, 19 Jun 2013 14:58:33 +0800
Subject: [PATCH] net bridge: add null pointer check,fix panic
in kernel 3.0, br_port_get_rcu() may return NULL when
On Thu, 2013-06-20 at 15:00 +0800, xiaoming gao wrote:
HI Eric
the problem is as follow:
br_del_if()--del_nbp():
list_del_rcu(p-list);
dev-priv_flags = ~IFF_BRIDGE_PORT;
--at this point, the nic be deleting still have rx_handler , so , may in
br_handle_frame()
Eric Dumazet said, at 2013-6-20 15:29:
On Thu, 2013-06-20 at 15:00 +0800, xiaoming gao wrote:
HI Eric
the problem is as follow:
br_del_if()--del_nbp():
list_del_rcu(p-list);
dev-priv_flags = ~IFF_BRIDGE_PORT;
--at this point, the nic be deleting still have rx_handler , so , may
in
On Thu, 2013-06-20 at 15:47 +0800, xiaoming gao wrote:
if you remove the test on FF_BRIDGE_PORT, and br_port_get_rcu never returns
NULL, the problem is fixed.
but the codes in mainline is still bugged, am i right??
by the way, kernel-stable 3.0 and 3.4 tree also have this bug, and is very
On Thu, 2013-06-20 at 11:08 +0800, xiaoming gao wrote:
> From: newtongao
> Date: Wed, 19 Jun 2013 14:58:33 +0800
> Subject: [PATCH] net bridge: add null pointer check,fix panic
>
> in kernel 3.0, br_port_get_rcu() may return NULL when network interface be
> de
From: newtongao
Date: Wed, 19 Jun 2013 14:58:33 +0800
Subject: [PATCH] net bridge: add null pointer check,fix panic
in kernel 3.0, br_port_get_rcu() may return NULL when network interface be
deleting from bridge,
but in function br_handle_frame and br_handle_local_finish, the pointer didn't
From: newtongao newton...@tencent.com
Date: Wed, 19 Jun 2013 14:58:33 +0800
Subject: [PATCH] net bridge: add null pointer check,fix panic
in kernel 3.0, br_port_get_rcu() may return NULL when network interface be
deleting from bridge,
but in function br_handle_frame and br_handle_local_finish
On Thu, 2013-06-20 at 11:08 +0800, xiaoming gao wrote:
From: newtongao newton...@tencent.com
Date: Wed, 19 Jun 2013 14:58:33 +0800
Subject: [PATCH] net bridge: add null pointer check,fix panic
in kernel 3.0, br_port_get_rcu() may return NULL when network interface be
deleting from bridge
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