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SubjectRe: 2.6.23-rc1-mm2
On Wed, 1 Aug 2007 22:52:44 +0200
"Torsten Kaiser" <just.for.lkml@googlemail.com> wrote:

> On 8/1/07, Andrew Morton <akpm@linux-foundation.org> wrote:
> > On Wed, 01 Aug 2007 16:30:08 -0400
> > Valdis.Kletnieks@vt.edu wrote:
> >
> > > As an aside, it looks like bits&pieces of dynticks-for-x86_64 are in there.
> > > In particular, x86_64-enable-high-resolution-timers-and-dynticks.patch is in
> > > there, adding a menu that depends on GENERIC_CLOCKEVENTS, but then nothing
> > > in the x86_64 tree actually *sets* it. There's a few other dynticks-related
> > > prep patches in there as well. Does this mean it's back to "coming soon to
> > > a CPU near you" status? :)
> >
> > I've lost the plot on that stuff: I'm just leaving things as-is for now,
> > wait for Thomas to return from vacation so we can have another run at it.
>
> For what its worth: 2.6.22-rc6-mm1 with NO_HZ works for me on an AMD
> SMP system without trouble.
>
> Next try with 2.6.23-rc1-mm2 and SPARSEMEM:
> Probably the same exception, but this time with Call Trace:
> [ 0.000000] Bootmem setup node 0 0000000000000000-0000000080000000
> [ 0.000000] Bootmem setup node 1 0000000080000000-0000000120000000
> [ 0.000000] Zone PFN ranges:
> [ 0.000000] DMA 0 -> 4096
> [ 0.000000] DMA32 4096 -> 1048576
> [ 0.000000] Normal 1048576 -> 1179648
> [ 0.000000] Movable zone start PFN for each node
> [ 0.000000] early_node_map[4] active PFN ranges
> [ 0.000000] 0: 0 -> 159
> [ 0.000000] 0: 256 -> 524288
> [ 0.000000] 1: 524288 -> 917488
> [ 0.000000] 1: 1048576 -> 1179648
> PANIC: early exception rip ffffffff807cddb5 error 2 cr2 ffffe20003000010

It's cryptically telling us that the code tried to access 0xffffe20003000010

> [ 0.000000]
> [ 0.000000] Call Trace:
> [ 0.000000] [<ffffffff807cddb5>] memmap_init_zone+0xb5/0x130
> [ 0.000000] [<ffffffff807ce874>] init_currently_empty_zone+0x84/0x110
> [ 0.000000] [<ffffffff807cec93>] free_area_init_node+0x393/0x3e0
> [ 0.000000] [<ffffffff807cefea>] free_area_init_nodes+0x2da/0x320
> [ 0.000000] [<ffffffff807c9c97>] paging_init+0x87/0x90
> [ 0.000000] [<ffffffff807c0f85>] setup_arch+0x355/0x470
> [ 0.000000] [<ffffffff807bc967>] start_kernel+0x57/0x330
> [ 0.000000] [<ffffffff807bc12d>] _sinittext+0x12d/0x140
> [ 0.000000]
> [ 0.000000] RIP memmap_init_zone+0xb5/0x130
>
> (gdb) list *0xffffffff807cddb5
> 0xffffffff807cddb5 is in memmap_init_zone (include/linux/list.h:32).
> 27 #define LIST_HEAD(name) \
> 28 struct list_head name = LIST_HEAD_INIT(name)
> 29
> 30 static inline void INIT_LIST_HEAD(struct list_head *list)
> 31 {
> 32 list->next = list;
> 33 list->prev = list;
> 34 }
> 35
> 36 /*
>
> I will test more tomorrow...

Thanks. Please send the .config?
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