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    SubjectRe: [2.6.22-rc7] khubd NULL deref oops...
    On 11/07/07, Chuck Ebbert <cebbert@redhat.com> wrote:
    > On 07/08/2007 05:45 PM, Daniel J Blueman wrote:
    > > When plugging in a USB 2 mass-storage device which I've been seeing
    > > problems with, I caught a khubd oops [1]. Kernel is 2.6.22-rc7 on ia32
    > > built with Ubuntu's 2.6.22 .config.
    >
    > > [ 4769.252000] sd 6:0:0:0: [sdb] Assuming drive cache: write through
    > > [ 4769.252000] sdb: sdb1 < sdb5 sdb6<6>usb 5-3: reset high speed USB
    > > device using ehci_hcd and address 8
    >
    > So the device got reset right in the middle of scanning for partitions.
    >
    > > [ 4769.544000] usb 5-3: device descriptor read/64, error -71
    > > [ 4769.760000] usb 5-3: device descriptor read/64, error -71
    > > [ 4769.976000] usb 5-3: reset high speed USB device using ehci_hcd and
    > > address 8
    > > [ 4770.088000] usb 5-3: device descriptor read/64, error -71
    > > [ 4770.304000] usb 5-3: device descriptor read/64, error -71
    > > [ 4770.520000] usb 5-3: reset high speed USB device using ehci_hcd and
    > > address 8
    > > [ 4770.928000] usb 5-3: device not accepting address 8, error -71
    > > [ 4771.040000] usb 5-3: reset high speed USB device using ehci_hcd and
    > > address 8
    >
    > Then a whole slew of these by-now-familiar messages.
    >
    > Try disabling CONFIG_USB_SUSPEND. It makes lots of USB bugs go away

    I'll give it a shot. For the record, I wasn't trying to perform a
    suspend at this time (or since booting).

    Thanks for your help,
    Daniel
    --
    Daniel J Blueman
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