linux-kernel - Re: hci_usb strikes again (was Re: BUG kmalloc-2048: Poison overwritten)

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Date:	Mon, 2 Jun 2008 23:12:38 +0000
From:	"Justin Mattock" <justinmattock@...il.com>
To:	"Pavel Machek" <pavel@...e.cz>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Andrew Morton" <akpm@...ux-foundation.org>, marcel@...tmann.org,
	linux-bluetooth@...r.kernel.org
Subject: Re: hci_usb strikes again (was Re: BUG kmalloc-2048: Poison overwritten)

On Mon, Jun 2, 2008 at 10:21 PM, Pavel Machek <pavel@...e.cz> wrote:
> On Mon 2008-06-02 01:25:25, Rafael J. Wysocki wrote:
>> On Monday, 2 of June 2008, Justin Mattock wrote:
>> > I received this after the second simultaneous suspend: (I will try and
>> > see if this is re creatable or not)
>>
>> Suspend to RAM or hibernation?
>
> hci_usb... that beast is known to corrupt random data on suspend and
> surprise removal.
>
>> > [  232.270737] BUG: unable to handle kernel paging request at 6b6b6c6b
>> > [  232.270743] IP: [<c013f96d>] module_put+0x12/0x2b
>> > [  232.270750] *pde = 00000000
>> > [  232.270753] Oops: 0002 [#1] SMP
>> > [  232.270757] Modules linked in: hci_usb cpufreq_ondemand
>> > cpufreq_performance cpufreq_powersave rfcomm hidp l2cap bluetooth fan
>> > ipmi_watchdog ipmi_msghandler uinput wlan_tkip ieee80211_crypt_tkip
>> > ieee80211_crypt arpt_mangle arptable_filter arp_tables
>> > nf_conntrack_ipv4 nf_conntrack iptable_mangle iptable_filter ip_tables
>> > x_tables intelfb i2c_i810 i2c_algo_bit coretemp eeprom acpi_cpufreq
>> > fglrx(P) applesmc joydev uvcvideo appletouch wlan_scan_sta
>> > ath_rate_sample firewire_ohci firewire_core snd_hda_intel ath_pci
>> > snd_pcm wlan ohci1394 intel_agp evdev ath_hal(P) snd_timer ieee1394
>> > pata_acpi thermal ehci_hcd uhci_hcd snd_page_alloc snd_hwdep agpgart
>> > video button processor
>> > [  232.270800]
>> > [  232.270802] Pid: 2690, comm: btdelconn Tainted: P
>> > (2.6.26-rc4-00033-g5463508 #4)
>
> ...and we get oops in bluetooth.
>
> Use btusb, instead.
>
> Actually, I guess we should mark hci_usb as broken. I don't see why we
> should debug the same problem over and over again.
>                                                                Pavel
>
> --
> (english) http://www.livejournal.com/~pavelmachek
> (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
>

Well; "shizzle my frizzle," The funny thing is, is I have not seen
this after performing more suspends,
maybe this is a every once in a while scenario.
regards;

-- 
Justin P. Mattock
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