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    SubjectRe: Getting oops with 3.2.10 when removing a SD card
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    On Wed, Mar 14, 2012 at 4:49 PM, Francis Moreau <francis.moro@gmail.com> wrote:
    > On Wed, Mar 14, 2012 at 4:43 PM, Josh Boyer <jwboyer@gmail.com> wrote:
    >> On Wed, Mar 14, 2012 at 11:38 AM, Francis Moreau <francis.moro@gmail.com> wrote:
    >>> Hi,
    >>>
    >>> I'm getting this oops (pretty often) after writing to a SD card and
    >>> removing the card.
    >>>
    >>> Here's the oops:
    >>>
    >>> [17610.371580] usb 1-1.6: new high-speed USB device number 14 using ehci_hcd
    >>> [17610.469928] usb 1-1.6: New USB device found, idVendor=0bda, idProduct=0159
    >>> [17610.469935] usb 1-1.6: New USB device strings: Mfr=1, Product=2,
    >>> SerialNumber=3
    >>> [17610.469939] usb 1-1.6: Product: USB2.0-CRW
    >>> [17610.469942] usb 1-1.6: Manufacturer: Generic
    >>> [17610.469946] usb 1-1.6: SerialNumber: 20071114173400000
    >>> [17610.485966] scsi16 : usb-storage 1-1.6:1.0
    >>> [17611.489253] scsi 16:0:0:0: Direct-Access     Generic- Multi-Card
    >>>   1.00 PQ: 0 ANSI: 0 CCS
    >>> [17611.489556] sd 16:0:0:0: Attached scsi generic sg2 type 0
    >>> [17612.177470] sd 16:0:0:0: [sdb] 7744512 512-byte logical blocks:
    >>> (3.96 GB/3.69 GiB)
    >>> [17612.178347] sd 16:0:0:0: [sdb] Write Protect is off
    >>> [17612.178355] sd 16:0:0:0: [sdb] Mode Sense: 03 00 00 00
    >>> [17612.179333] sd 16:0:0:0: [sdb] No Caching mode page present
    >>> [17612.179338] sd 16:0:0:0: [sdb] Assuming drive cache: write through
    >>> [17612.182988] sd 16:0:0:0: [sdb] No Caching mode page present
    >>> [17612.182993] sd 16:0:0:0: [sdb] Assuming drive cache: write through
    >>> [17612.214565]  sdb: sdb1
    >>> [17612.218666] sd 16:0:0:0: [sdb] No Caching mode page present
    >>> [17612.218672] sd 16:0:0:0: [sdb] Assuming drive cache: write through
    >>> [17612.218677] sd 16:0:0:0: [sdb] Attached SCSI removable disk
    >>> [17620.408767] usb 1-1.6: USB disconnect, device number 14
    >>> [17620.410224] scsi 16:0:0:0: killing request
    >>> [17620.410512] BUG: unable to handle kernel NULL pointer dereference
    >>> at 0000000000000008
    >>> [17620.411480] IP: [<ffffffffa01e08ef>] sd_revalidate_disk+0x3f/0x1a10 [sd_mod]
    >>> [17620.411501] PGD 286a3067 PUD aef9f067 PMD 0
    >>> [17620.411507] Oops: 0000 [#1] SMP
    >>> [17620.411512] CPU 0
    >>
    >> There's a patch to fix this that will hopefully be pulled into Linus' tree
    >> today.  It should work it's way back to 3.2-stable after that.
    >>
    >
    > Could you just point out the patch (including the tree shipping it) so
    > I can use/test it ?
    >

    maybe this one:

    block: Fix NULL pointer dereference in sd_revalidate_disk

    or perhaps this one:

    block: fix __blkdev_get and add_disk race condition

    I'm asking because my SD card is almost unusable now: after 3 or 4
    insertion/remove, I get the oops.

    --
    Francis
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