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    SubjectSYN flood = VFS: No free inodes - contact Linus?

    We've got a beefy server here that's crashed twice today. I dont know what
    the cause of the crash, but syslog reported "VFS: No free inodes - contact
    Linus" then a mix of SYN cookie warnings and inode warnings.

    ALR revolution 6x6 (6x ppro200)
    tulip.c 0.77 (only one stable with smp, locked in at 100bT/FD)
    DPT 3334UW controller
    BusLogic BT-950

    syn/rst cookies on
    always defrag
    filehandles patch
    ip_fragment.c patch (alan cox's and mount's)

    It looks like the VFS error came first, then the spew of SYN warnings and
    more VFS errors. Is this a problem with the filesyste? syn/rst cookies?

    This system hosts ~3500 web sites and has _800_ ip aliases, so its a
    regular target of attacks (any one of 800 ips), but this is the most nasty
    crash it has experienced. This specific crash has happened twice in a

    Any ideas what could be going on?

    I'm not a subscriber to this list, so please respond directly

    - liem
    Liem Bahneman
    Senior Systems Administrator
    The Cobalt Group (206) 269-6363 x300
    Seattle, Washington F(206) 269-6350

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