From: Oliver Neukum <oliver@neukum.org>
To: linux-usb-devel@lists.sourceforge.net
Cc: Pavel Machek <pavel@suse.cz>, Andrew Morton <akpm@osdl.org>,
Greg KH <greg@kroah.com>,
kernel list <linux-kernel@vger.kernel.org>
Subject: Re: [linux-usb-devel] 2.6.20-rc4: null pointer deref in khubd
Date: Thu, 11 Jan 2007 14:21:47 +0100 [thread overview]
Message-ID: <200701111421.48125.oliver@neukum.org> (raw)
In-Reply-To: <20070110203809.GA6378@ucw.cz>
Am Mittwoch, 10. Januar 2007 21:38 schrieb Pavel Machek:
> Hi!
>
> > > usb 2-1: new full speed USB device using uhci_hcd and address 68
> > > usb 2-1: USB disconnect, address 68
> > > usb 2-1: unable to read config index 0 descriptor/start
> > > usb 2-1: chopping to 0 config(s)
> >
> > Does anybody know a legitimate reasons a device should have
> > 0 configurations? Independent of the reason of this bug, should we disallow
> > such devices and error out?
>
> It is not bad device, btw, but extremely flakey connector. Bug is
> random :-(, and machine is smp, so it might even be a race.
With that config option, there's a race even on UP. probe() can
sleep.
Regards
Oliver
prev parent reply other threads:[~2007-01-11 13:21 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-10 10:49 Pavel Machek
2007-01-10 15:49 ` Oliver Neukum
2007-01-10 16:14 ` [linux-usb-devel] " Alan Stern
2007-01-10 17:01 ` Oliver Neukum
2007-01-10 17:31 ` Alan Stern
2007-01-10 19:54 ` Oliver Neukum
2007-01-10 22:35 ` Alan Stern
2007-01-10 22:56 ` Pavel Machek
2007-01-11 7:48 ` Oliver Neukum
2007-01-11 10:34 ` Pavel Machek
2007-01-11 13:08 ` Oliver Neukum
2007-01-10 20:38 ` Pavel Machek
2007-01-11 13:21 ` Oliver Neukum [this message]
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