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    SubjectRe: [patch] 2.2.9_andrea-VM1.gz
    I've got a really strange problem with the patch.

    While the system is stable and responsive under load a really idle
    system leads to processes hanging on e.g. (strace output):

    open("/var/log/nw.routes", O_WRONLY|O_CREAT|O_TRUNC, 0666

    (note: the ") = 10" is missing).

    The load goes to 1 and cpu usage is 100%. SysRq-P shows:

    ...: EIP: 0010:[schedule+421/640] EFLAGS: 00000206
    ...: EAX: 00000027 EBX: c3ca4000 ECX: c38d0000 EDX: 00000000
    ...: ESI: c01e2000 EDI: 00000000 EBP: c3ca5f10 DS: 0018 ES: 0018
    ...: CR0: 8005003b CR2: 4000d000 CR3: 01900000

    Note that the address is schedule+421 almost all the time. Sometimes
    it's schedule+406 or schedule+412.

    This resolves to the following sourcecode:

    ./kernel/sched.c:

    static inline int goodness (struct task_struct * prev,
    [...]
    if (p->policy != SCHED_OTHER) { <---- schedule+421
    weight = 1000 + p->rt_priority;
    goto out;

    The process stays hung until another process tries to access the disk.
    Accessing the cache / buffers isn't sufficient.

    Peter
    --
    _ x ___
    / \_/_\_ /,--' p.steiner@t-online.de (Peter Steiner)
    \/>'~~~~//
    \_____/ signature V0.2 alpha

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