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    SubjectRe: Bug: slab corruption in 2.5.67-mm1
    From

    Andrew Morton said:
    > J Sloan <joe@tmsusa.com> wrote:
    >>
    >> This may be of interest -
    >>
    >> kernel: 2.5.67-mm1
    >>
    >> Linux distro: Red Hat 8.0 + updates
    >>
    >> Hardware:
    >> Celeron 1.2 Ghz on Intel Motherboard
    >> 512 MB RAM, 2x e100 ethernet
    >
    > whoa. Uniprocessor.
    >
    >> ---- snip ----
    >> Freeing unused kernel memory: 312k freed
    >> EXT3 FS 2.4-0.9.16, 02 Dec 2001 on ide0(3,3), internal journal
    >> Adding 514072k swap on /dev/hda2. Priority:42 extents:1
    >> kjournald starting. Commit interval 5 seconds
    >> EXT3 FS 2.4-0.9.16, 02 Dec 2001 on ide0(3,1), internal journal
    >> EXT3-fs: mounted filesystem with ordered data mode.
    >> Slab corruption: start=dfa2f320, expend=dfa2f97f, problemat=dfa2f328
    >> Data: ********6A
    >
    > Yes, this means that someone ran put_task_struct() against an
    > already-freed task_struct. There's some deubg code in -mm which is
    > supposed to trap this, but it obviously didn't trigger for some reason.
    >
    > Until someone finds a way to reproduce this we're a bit stuck. A code
    > audit may find it.

    FYI
    Same thing happend on my machine *once*, in the same place
    (i.e mounting root fs -- JFS) but i forgot the full report on my home
    machine :-(.
    Kernel 2.5.67 mm1 compiled by gcc 3.2.2 and booted with "debug"
    on kernel command line. Couldn't reproduce it :-(
    Machine: Duron 700 MHz, 256 M RAM, chipset Via KT133, ATI Radeon VE QY
    graphics card, CS4239 sound card, no ethernet.

    Distribution Slackware 8.1 + updates.

    Calin
    --
    # fortune
    fortune: write error on /dev/null --- please empty the bit bucket


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