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    SubjectRe: ext3 on latest -git: BUG: unable to handle kernel NULL pointer dereference at 0000000c
    On Thu, Jul 17, 2008 at 4:16 PM, Josef Bacik <jbacik@redhat.com> wrote:
    > On Thu, Jul 17, 2008 at 04:35:16PM +0200, Vegard Nossum wrote:
    >> On Thu, Jul 17, 2008 at 4:13 PM, Josef Bacik <jbacik@redhat.com> wrote:
    >> > On Thu, Jul 17, 2008 at 04:25:49PM +0200, Vegard Nossum wrote:
    >> >> On Thu, Jul 17, 2008 at 3:57 PM, Josef Bacik <jbacik@redhat.com> wrote:
    >> >> > Can you try this patch out and see if it fixes the problem? I didn't compile
    >> >> > test it, so you may need to tweak somethings, but it should work. Thanks,
    >> >> >
    >> >> > Signed-off-by: Josef Bacik <jbacik@redhat.com>
    >> >>
    >> >> Nope, seems to be the same problem:
    >> >>
    >> >> kjournald starting. Commit interval 5 seconds
    >> >> EXT3-fs warning: mounting fs with errors, running e2fsck is recommended
    >> >> EXT3 FS on loop0, internal journal
    >> >> EXT3-fs: mounted filesystem with ordered data mode.
    >> >> EXT3-fs error (device loop0): ext3_free_blocks: Freeing blocks in
    >> >> system zones - Block = 16, count = 1
    >> >> EXT3-fs error (device loop0): ext3_free_blocks: Freeing blocks in
    >> >> system zones - Block = 32, count = 1
    >> >> EXT3-fs error (device loop0): ext3_free_blocks: Freeing blocks not in
    >> >> datazone - block = 262144, count = 1
    >> >> BUG: unable to handle kernel NULL pointer dereference at 0000000c
    >> >> IP: [<c01fd210>] journal_dirty_metadata+0xa0/0x160
    >> >>
    >> >> Full log at http://folk.uio.no/vegardno/linux/log-1216304953.txt
    >> >>
    >> >>
    >> >
    >> > Ok, this should do it then. Thanks,

    -ENOLUCK

    EXT3-fs error (device loop0): ext3_free_blocks: Freeing blocks not in
    datazone - block = 524288, count = 1
    EXT3-fs error (device loop0) in ext3_free_blocks_sb: IO failure
    BUG: unable to handle kernel NULL pointer dereference at 0000000c
    IP: [<c01fd200>] journal_dirty_metadata+0xa0/0x160

    It did seem to get further, though.

    http://folk.uio.no/vegardno/linux/log-1216306142.txt


    Vegard

    --
    "The animistic metaphor of the bug that maliciously sneaked in while
    the programmer was not looking is intellectually dishonest as it
    disguises that the error is the programmer's own creation."
    -- E. W. Dijkstra, EWD1036


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