linux-kernel - Re: Kernel Oops at tty_buffer_request_room when using pppd program (2.6.37-rc4)

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Date:	Thu, 16 Dec 2010 19:00:16 +0800
From:	"baoyb" <baoyb@...t.org.cn>
To:	"Greg KH" <gregkh@...e.de>
Cc:	<linux-kernel@...r.kernel.org>, <alan@...ux.intel.com>
Subject: Re: Kernel Oops at tty_buffer_request_room when using pppd program (2.6.37-rc4)

Hi All:
I have tested 2.6.37-rc5 and the bug still exist.
I also tested 2.6.32.24, the oops frequency is much lower than 2.6.37. (Only 
happened 2 times in one week).

Regards,
Baoyb

--------------------------------------------------
From: "Greg KH" <gregkh@...e.de>
Sent: Wednesday, December 08, 2010 11:07 PM
To: "baoyb" <baoyb@...t.org.cn>
Cc: <linux-kernel@...r.kernel.org>; <alan@...ux.intel.com>
Subject: Re: Kernel Oops at tty_buffer_request_room when using pppd program 
(2.6.37-rc4)

> On Wed, Dec 08, 2010 at 09:55:09PM +0800, baoyb wrote:
>> Hi All:
>>
>> We are using a USB 3G card(HUAWEI e180) and wvdial+pppd(version
>> 2.4.5) program. Sometimes kernel will crash when pppd disconnect the
>> link. Our cpu platform is AMCC ppc405EX and kernel version is
>> 2.6.37-rc4.
>
> Can you try 2.6.37-rc5 and see if that fixed the issue?  A number of tty
> fixes went in between those two versions that should have resolved this.
>
> thanks,
>
> greg k-h
>
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> 
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