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    SubjectRe: 2.6.18-rt1
    On Wednesday 20 September 2006 14:25, Paul E. McKenney wrote:
    >On Wed, Sep 20, 2006 at 10:41:58AM -0700, Daniel Walker wrote:
    >> On Wed, 2006-09-20 at 10:38 -0700, Paul E. McKenney wrote:
    >> > On Wed, Sep 20, 2006 at 10:00:38AM -0700, Daniel Walker wrote:
    >> > > On Wed, 2006-09-20 at 12:50 -0400, Gene Heskett wrote:
    >> > > > LD .tmp_vmlinux1
    >> > > >
    >> > > > kernel/built-in.o(.text+0x16f25): In function `hrtimer_start':
    >> > > > : undefined reference to `hrtimer_update_timer_prio'
    >> > > >
    >> > > > make: *** [.tmp_vmlinux1] Error 1
    >> > > >
    >> > > > about half way thru the normal time. config attached. I don't
    >> > > > think hires timers are enabled.
    >> > > >
    >> > > > Comments?
    >> > >
    >> > > Fix attached.
    >> > >
    >> > > Daniel
    >> >
    >> > Compiles for me with this patch. Will try it out on a couple of
    >> > machines.
    >>
    >> Ingo actually updated with a similar fix , in
    >>
    >> http://people.redhat.com/~mingo/realtime-preempt/patch-2.6.18-rt2
    >
    >OK, using that instead.
    >
    >I get the following at startup, which probably means that I need to use
    >some machine other than a NUMA-Q. Trying a different machine...
    >
    > Thanx, Paul
    >
    >BUG: unable to handle kernel NULL pointer dereference at virtual address
    > 00000000 printing eip:
    >c01151ff
    >*pde = 34d21001
    >*pte = 00000000
    >stopped custom tracer.
    >Oops: 0000 [#1]
    >PREEMPT SMP
    >Modules linked in:
    >CPU: 2
    >EIP: 0060:[<c01151ff>] Not tainted VLI
    >EFLAGS: 00010246 (2.6.18-rt2-autokern1 #1)
    >EIP is at __wake_up_common+0x10/0x55
    >eax: 00000000 ebx: 00000001 ecx: c113629c edx: 00000000
    >esi: c113629c edi: c113629c ebp: dff25f34 esp: dff25f24
    >ds: 007b es: 007b ss: 0068 preempt: 00000001
    >Process softirq-timer/2 (pid: 27, ti=dff24000 task=dff20e30
    > task.ti=dff24000) Stack: 00000000 00000000 c113629c 00000001 dff25f60
    > c0115267 c113629c 00000006 00000001 00000001 00000000 00000006 00000007
    > dffd5e40 c1136270 c1136240 c012ecf6 00000000 00000001 c11360e4 00000001
    > 00000000 dff12000 c043b2c0 Call Trace:
    > [<c0115267>] __wake_up+0x23/0x52
    > [<c012ecf6>] hrtimer_run_queues+0xf6/0x10f
    > [<c0123db3>] run_timer_softirq+0x13b/0x31b
    > [<c011fba0>] ksoftirqd+0xff/0x194
    > [<c011faa1>] ksoftirqd+0x0/0x194
    > [<c012beee>] kthread+0x82/0xa7
    > [<c012be6c>] kthread+0x0/0xa7
    > [<c0101031>] kernel_thread_helper+0x5/0xb
    >---------------------------
    >
    >| preempt count: 00000001 ]
    >| 1-level deep critical section nesting:
    >
    >----------------------------------------
    >.. [<c02fd493>] .... __spin_lock_irqsave+0xe/0x35
    >.....[<00000000>] .. ( <= _stext+0x3feffd68/0x41)
    >
    >Code: 45 14 00 00 00 00 8b 45 08 83 ca 01 89 55 0c 8b 40 04 89 45 08 5d
    > e9 62 e2 ff ff 55 89 e5 57 56 53 50 8b 7d 08 8b 5d 10 8b 57 20 <8b> 02
    > 89 45 f0 8d 47 20 39 c2 74 31 8b 72 f4 8d 42 f4 ff 75 18 EIP:
    > [<c01151ff>] __wake_up_common+0x10/0x55 SS:ESP 0068:dff25f24

    That looks like the chorus of the song I saw when it crashed on boot,
    pretty darned close to identical.

    --
    Cheers, Gene
    "There are four boxes to be used in defense of liberty:
    soap, ballot, jury, and ammo. Please use in that order."
    -Ed Howdershelt (Author)
    Yahoo.com and AOL/TW attorneys please note, additions to the above
    message by Gene Heskett are:
    Copyright 2006 by Maurice Eugene Heskett, all rights reserved.
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