linux-kernel - Re: 2.6.31.4: WARNING: at drivers/usb/serial/usb-serial.c:446 serial

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Message-ID: <BLU0-SMTP3323A290887176D9229ECE8CBE0@phx.gbl>
Date:	Thu, 22 Oct 2009 12:06:16 +0900
From:	Katsuhiko Nishimra <kat841@...mail.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Tomasz Chmielewski <mangoo@...g.org>, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org
Subject: Re: 2.6.31.4: WARNING: at drivers/usb/serial/usb-serial.c:446 serial_unthrottle

Alan Cox wrote:
> On Thu, 15 Oct 2009 15:12:03 +0200
> Tomasz Chmielewski <mangoo@...g.org> wrote:
> 
>> I see my minicom segfaulted for some reason (probably as I closed konsole window without exiting minicom first).
>>
>> And I see this warning in dmesg - anything useful?
> 
> Looks like a very very old bug in the tty code. I have a patch for this I'm
> testing for a while and will sort out properly after the kernel summit. In
> the mean time have a play with the patch below which ought to do the trick.
> 

Unfortunately, I reproduced this error after applying this patch into
v2.6.32-rc5. Kerneloops url for the bug is below.
http://www.kerneloops.org/submitresult.php?number=827635

This bug occured when I close minicom normally with C-A X.

Thx.
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