From: Andrew Morton <akpm@osdl.org>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: linux-kernel@vger.kernel.org, linux-usb-devel@lists.sourceforge.net
Subject: Re: 2.6.15-rc5-mm2: ehci_hcd crashes on load sometimes
Date: Mon, 12 Dec 2005 12:29:14 -0800 [thread overview]
Message-ID: <20051212122914.1bd36f32.akpm@osdl.org> (raw)
In-Reply-To: <200512122053.39970.rjw@sisk.pl>
"Rafael J. Wysocki" <rjw@sisk.pl> wrote:
>
> On Sunday, 11 December 2005 21:38, Andrew Morton wrote:
> > "Rafael J. Wysocki" <rjw@sisk.pl> wrote:
> > >
> > > The ehci_hcd driver causes problems like this:
> > >
> > > ehci_hcd 0000:00:02.2: EHCI Host Controller
> > > ehci_hcd 0000:00:02.2: debug port 1
> > > ehci_hcd 0000:00:02.2: new USB bus registered, assigned bus number 3
> > > ehci_hcd 0000:00:02.2: irq 5, io mem 0xfebfdc00
> > > usb 2-2: Product: USB Receiver
> > > usb 2-2: Manufacturer: Logitech
> > > usb 2-2: configuration #1 chosen from 1 choice
> > > ehci_hcd 0000:00:02.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
> > > Unable to handle kernel NULL pointer dereference at 00000000000002a4 RIP:
> > > <ffffffff880ad9d0>{:ehci_hcd:ehci_irq+224}
> >
> > Can you poke around in gdb, see which line it's dying at?
>
> It looks like at the line 620. At least here's what gdb told me:
>
> Line 620 of "ehci-hcd.c" starts at address 0x69c3 <ehci_irq+211>
> and ends at 0x69e2 <ehci_irq+242>.
On my tree that's
if ((status & STS_PCD) && device_may_wakeup(&hcd->self.root_hub->dev)) {
It's best to actually send a copy of line 620 - kernels vary a lot, and
many developers won't have that particualr -mm tree handy.
The way I normally do this is to do `gdb vmlinux' and then `l
*0xffffffff880ad9d0'. If that lands you in some inline function then poke
around, displacing the EIP by +/- amounts until it lands outside the
inlined function so you can see the callsite.
Anyway. Greg's tree seems rather buggy lately..
next prev parent reply other threads:[~2005-12-12 20:29 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-11 12:13 2.6.15-rc5-mm2 Andrew Morton
2005-12-11 12:39 ` 2.6.15-rc5-mm2 Benoit Boissinot
2005-12-11 15:17 ` 2.6.15-rc5-mm2 Benoit Boissinot
2005-12-11 15:47 ` 2.6.15-rc5-mm2 Rafael J. Wysocki
2005-12-11 15:52 ` 2.6.15-rc5-mm2: broken resume from disk on x86-64 Rafael J. Wysocki
2005-12-11 16:02 ` 2.6.15-rc5-mm2: evdev problem Rafael J. Wysocki
2005-12-11 18:22 ` Dmitry Torokhov
2005-12-11 16:06 ` 2.6.15-rc5-mm2: ehci_hcd crashes on load sometimes Rafael J. Wysocki
2005-12-11 20:38 ` Andrew Morton
2005-12-12 19:53 ` Rafael J. Wysocki
2005-12-12 20:29 ` Andrew Morton [this message]
2005-12-12 20:55 ` Rafael J. Wysocki
2005-12-12 21:09 ` Andrew Morton
2005-12-12 21:39 ` Rafael J. Wysocki
2005-12-12 21:47 ` Andrew Morton
2005-12-12 21:56 ` Ben Pfaff
2005-12-13 6:52 ` [linux-usb-devel] " David Brownell
2005-12-13 22:10 ` Rafael J. Wysocki
2005-12-13 22:22 ` David Brownell
2005-12-13 22:39 ` Rafael J. Wysocki
2005-12-13 23:31 ` David Brownell
2005-12-11 16:08 ` 2.6.15-rc5-mm2 Jesper Juhl
2005-12-11 21:13 ` [PATCH] Fix vesafb display panning regression Antonino A. Daplas
2005-12-11 21:30 ` Jesper Juhl
2005-12-11 16:12 ` 2.6.15-rc5-mm2 :-) Maciej Soltysiak
2005-12-13 5:52 ` Con Kolivas
[not found] ` <1916802326.20051213121330@dns.toxicfilms.tv>
2005-12-13 12:16 ` Con Kolivas
2005-12-13 23:30 ` Peter Williams
2005-12-11 17:56 ` 2.6.15-rc5-mm2: two cs5535 modules Adrian Bunk
2005-12-12 18:29 ` Ben Gardner
2005-12-12 22:49 ` Alan Cox
2005-12-12 0:53 ` 2.6.15-rc5-mm2 Grant Coady
2005-12-12 14:05 ` 2.6.15-rc5-mm2 Cornelia Huck
2005-12-14 8:54 ` SMP+nosmp=hang [was: Re: 2.6.15-rc5-mm2] J.A. Magallon
[not found] ` <20060120192259.4460af42.akpm@osdl.org>
2006-01-21 23:46 ` J.A. Magallon
2006-01-22 0:22 ` Randy.Dunlap
2005-12-15 13:41 ` 2.6.15-rc5-mm2 Reuben Farrelly
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