Re: 2.6.23-rc1-mm1

Torsten Kaiser
2007-07-26T17:54:30Z

On 7/26/07, Andrew Morton <akpm@linux-foundation.org> wrote:
> On Wed, 25 Jul 2007 23:52:47 +0200 "Torsten Kaiser" <just.for.lkml@googlemail.com> wrote:
>
> > On 7/25/07, Andrew Morton <akpm@linux-foundation.org> wrote:
> > > On Wed, 25 Jul 2007 22:22:41 +0200
> > > "Torsten Kaiser" <just.for.lkml@googlemail.com> wrote:
> > > > [ 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 ffffffff807caac5 error 2 cr2 ffffe20003000010
> > > > [ 0.000000]
> > > > [ 0.000000] Call Trace:
> > > >
> > > > ... but no Call Trace follows.
> > > >
> > > > (gdb) list *0xffffffff807caac5
> > > > 0xffffffff807caac5 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 /*
> > > >
> > > > Torsten
> > >
> > > Quite a few people have been playing in that area. Can you please send the
> > > .config?
> >
> > #
> > # Automatically generated make config: don't edit
> > # Linux kernel version: 2.6.23-rc1-mm1
> > # Wed Jul 25 21:18:15 2007
>
> It boots OK on my test box, bummer. Please test -mm2 and if it also fails,

I will test it...

> it'd be great if you could run through
> http://www.zip.com.au/~akpm/linux/patches/stuff/bisecting-mm-trees.txt - it
> doesn't take very long.

I did two major changes when upgrading from 22-rc6-mm1 to 23-rc1-mm1.
I switched from DISCONTIGMEM to SPARSEMEM and from SLAB to SLUB.

The other combinations:
SPARSEMEM+SLAB:
[ 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 ffffffff807c4ac5 error 2 cr2 ffffe20003000010
[ 0.000000]
[ 0.000000] Call Trace:
DISCONTIGMEM+SLUB:
[ 39.833272] ..MP-BIOS bug: 8254 timer not connected to IO-APIC
[ 40.016659] Kernel panic - not syncing: IO-APIC + timer doesn't
work! Try using the 'noapic' kernel parameter
DISCONTIGMEM+SLAB:
Boots until it can't find / because I didn't append the correct initrd
It also hit the MP-BIOS bug, but was not bothered by it:
[ 36.696965] ..MP-BIOS bug: 8254 timer not connected to IO-APIC
[ 36.880537] Using local APIC timer interrupts.
[ 36.932215] result 12500283
[ 36.940581] Detected 12.500 MHz APIC timer.

So I think, I will postpone SPARSEMEM until -mm2, as there are seem to
be some problems in that area (Re: 2.6.23-rc1-mm1 sparsemem_vmemamp
fix)

But maybee I will get SLUB to work. ;)

Torsten