linux-kernel - Re: 2.6.31-rc5 regression: Oops when USB Serial disconnected while in use

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Message-ID: <4A7ED700.9080407@pardus.org.tr>
Date:	Sun, 09 Aug 2009 17:02:40 +0300
From:	Ozan Çağlayan <ozan@...dus.org.tr>
To:	Bruno Prémont <bonbons@...ux-vserver.org>
CC:	Greg Kroah-Hartman <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: 2.6.31-rc5 regression: Oops when USB Serial disconnected while
 in use

Bruno Prémont wrote:
> I tried bisecting this but bisect did end up on a fully unrelated commit
> (which is not even being compiled into my kernel).
> Possibly the failed bisect could be related to mis-classified kernel
> panic/hang while pulling the USB cable (there were two such panics for the
> whole iteration)?
>
> There are quite a few patches touching tty, ttyUSB and friends between
> rc4 and now so pretty hard to guess on the correct one.
>
> The oops always happens when I disconnect the USB serial console (here
> the one built into Marvell SheevaPlug) while having minicom connected
> to it.
> During the bisection for the last few bad iterations minicom got killed
> (segfault), the bad ones on the iteration left a minicom zombie in 'D'
> state.
>
> Regards,
> Bruno
>
>   

That may be a related/possible fix for that,

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b68f2fb9e73f46037fbeca5fbd4ae8a7ddd8ef6b
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