linux-kernel - Re: usbserial.ko/option.ko on 2.6.23: Unable to handle kernel paging request && inconsistent lock state

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Message-ID: <Pine.LNX.4.64.0711011102090.4152@twin.jikos.cz>
Date:	Thu, 1 Nov 2007 11:02:47 +0100 (CET)
From:	Jiri Kosina <jikos@...os.cz>
To:	Marcin Ślusarz <marcin.slusarz@...il.com>
cc:	linux-kernel@...r.kernel.org, greg@...ah.com
Subject: Re: usbserial.ko/option.ko on 2.6.23: Unable to handle kernel paging
 request && inconsistent lock state

On Thu, 1 Nov 2007, Marcin Ślusarz wrote:

> > > swapper/0 [HC1[1]:SC0[0]:HE0:SE1] takes:
> > >  (&port->lock){+...}, at: [<ffffffff880e212c>]
> > > usb_serial_generic_read_bulk_callback+0x6c/0x1c0 [usbserial]
> > > {hardirq-on-W} state was registered at:
> > The fix for this one has already been submitted to Greg --
> > http://lkml.org/lkml/2007/10/28/38
> with this patch I still get:
> =================================
> [ INFO: inconsistent lock state ]
> 2.6.23 #9
> ---------------------------------
> inconsistent {hardirq-on-W} -> {in-hardirq-W} usage.
> swapper/0 [HC1[1]:SC0[0]:HE0:SE1] takes:
>  (&port->lock){+...}, at: [<ffffffff880e912d>]
> usb_serial_generic_read_bulk_callback+0x6d/0x1d0 [usbserial]
> {hardirq-on-W} state was registered at:
>   [<ffffffff80251273>] __lock_acquire+0x703/0x1110
>   [<ffffffff880e93b6>] usb_serial_generic_write+0x76/0x2e0 [usbserial]

What kernel version are you using? I should have already fixed this one in 
current git -- commit acd2a847

-- 
Jiri Kosina