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Date: Fri, 28 Nov 2008 15:50:10 -0800 From: Greg KH <gregkh@...e.de> To: Marcin Slusarz <marcin.slusarz@...il.com> Cc: LKML <linux-kernel@...r.kernel.org>, linux-usb@...r.kernel.org, netdev@...r.kernel.org Subject: Re: option: oops on unload (2.6.27.4) On Fri, Nov 28, 2008 at 11:01:43PM +0100, Marcin Slusarz wrote: > On Fri, Nov 28, 2008 at 01:50:21PM -0800, Greg KH wrote: > > On Fri, Nov 28, 2008 at 10:32:59PM +0100, Marcin Slusarz wrote: > > > It's not new bug - I've seen this oops many times but on much older > > > kernels (2.6.18, probably on 2.6.24 too). > > > > > > I tried to rmmod it (and all usb modules) because sometimes it helps when > > > modem disconnects and can't connect again. > > > > > > [25350.138850] BUG: unable to handle kernel paging request at e0857fb4 > > > [25350.138866] IP: [<e0a22e80>] :usbcore:unlink1+0xab/0xb9 > > > [25350.138921] *pde = 1f80f067 *pte = 00000000 > > > [25350.138934] Oops: 0000 [#1] PREEMPT SMP > > > [25350.138945] Modules linked in: r128 drm ipt_REDIRECT ipt_MASQUERADE xt_tcpudp xt_multiport iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack iptable_filter ip_tables ppp_deflate zlib_deflate zlib_inflate bsd_comp ppp_async crc_ccitt ppp_generic slhc ipt_REJECT x_tables loop option usbserial snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm snd_timer snd 8139cp i2c_i801 floppy 8139too 3c59x psmouse intel_agp soundcore snd_page_alloc sg mii usbcore agpgart i2c_core sr_mod evdev dcdbas cdrom [last unloaded: uhci_hcd] > > > [25350.139052] > > > [25350.139059] Pid: 2807, comm: pppd Not tainted (2.6.27.4 #5) > > > [25350.139065] EIP: 0060:[<e0a22e80>] EFLAGS: 00010286 CPU: 0 > > > [25350.139088] EIP is at unlink1+0xab/0xb9 [usbcore] > > > > Yes, I've seen this before, what module are you unloading, uhci-hcd or > > the option module? > > I don't know :| I invoked "rmmod option usbserial uhci_hcd usbcore" Try them one at a time: rmmod option rmmod uhci-hcd that should be all you need if you really need to remove all usb devices. But why do you need to do this? thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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