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    SubjectRe: 2.6.25-rc: complete lockup on boot/start of X (bisected)
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    On Sun, 2008-03-23 at 20:06 +0100, Peter Zijlstra wrote:
    > On Sun, 2008-03-23 at 19:46 +0100, Marcin Slusarz wrote:
    >
    > > 4 different lockups:
    > > http://alan.umcs.lublin.pl/~mslusarz/kernel/2008.03.23-lockup/
    >
    > Brilliant, these are extremely helpful.
    >
    > What seems to happen is a classic xtime deadlock, doing a xtime
    > seq_readlock while holding a seq_writelock.
    >
    > Only need to figure out _why_ that is happening....

    Does your machine boot with the following patch applied:


    diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
    index 671af61..e300889 100644
    --- a/kernel/time/timekeeping.c
    +++ b/kernel/time/timekeeping.c
    @@ -190,9 +190,6 @@ static void change_clocksource(void)
    clocksource_calculate_interval(clock, NTP_INTERVAL_LENGTH);

    tick_clock_notify();
    -
    - printk(KERN_INFO "Time: %s clocksource has been installed.\n",
    - clock->name);
    }
    #else
    static inline void change_clocksource(void) { }



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