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    SubjectRe: [PROBLEM] 2.6.22-rc2 panics on x86-64 with slub
    On Mon, May 21 2007, Christoph Lameter wrote:
    > Ok booting SLUB without "slub_debug" and having
    >
    > CONFIG_DEBUG_LOCK_ALLOC
    > CONFIG_LOCKDEP
    >
    > will trigger the problem.
    >
    > So I guess the issue is that lockdep does a slab alloc while we get the
    > slab lock during slab alloc?

    If I have CONFIG_SLUB_DEBUG set, then box boots fine. If I don't have it
    set, then it hard hangs sometime after boot:

    [...]
    ReiserFS: sda2: Using r5 hash to sort names
    VFS: Mounted root (reiserfs filesystem) readonly.
    Freeing unused kernel memory: 180k freed

    which is usually followed by messages bringing up the network link, etc.
    Let me know which tests you want run, or which patches to try.

    --
    Jens Axboe

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