Hi Andrew,

I see call trace followed by the kernel bug with the 2.6.23-rc3-mm1
kernel and have attached the boot log and config file.

=======================================================
SLUB: Genslabs=12, HWalign=128, Order=0-1, MinObjects=4, CPUs=4, Nodes=16

Bad page state in process 'swapper'

page:cf00000000015818 flags:0x0000020000000400 mapping:0000000000000000 
mapcount:0 count:0

Trying to fix it up, but a reboot is needed

Backtrace:

Call Trace:

[c0000000005cbab0] [c000000000010344] .show_stack+0x68/0x1b4 (unreliable)

[c0000000005cbb60] [c0000000000a6c54] .bad_page+0x84/0x138

[c0000000005cbbf0] [c0000000000aa9e0] .free_hot_cold_page+0xdc/0x21c

[c0000000005cbc90] [c0000000000ad7ec] .put_page+0x158/0x180

[c0000000005cbd30] [c0000000000d4de8] .kfree+0x74/0xf0

[c0000000005cbdb0] [c0000000000a866c] .process_zones+0x1a8/0x1f8

[c0000000005cbe60] [c0000000004b5160] .setup_per_cpu_pageset+0x24/0x48

[c0000000005cbee0] [c0000000004978d8] .start_kernel+0x304/0x3f4

[c0000000005cbf90] [c0000000003bef10] .start_here_common+0x54/0x58

Hexdump:

000: cf 00 00 00 00 01 57 d0 00 00 02 00 00 00 04 00

010: 00 00 00 01 ff ff ff ff 00 00 00 00 00 00 00 00

020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

030: cf 00 00 00 00 01 58 08 cf 00 00 00 00 01 58 08

040: 00 00 02 00 00 00 04 00 00 00 00 00 ff ff ff ff

050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

060: 00 00 00 00 00 00 00 00 cf 00 00 00 00 01 58 40

070: cf 00 00 00 00 01 58 40 00 00 02 00 00 00 04 00

080: 00 00 00 01 ff ff ff ff 00 00 00 00 00 00 00 00

090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0a0: cf 00 00 00 00 01 58 78 cf 00 00 00 00 01 58 78

0b0: 00 00 02 00 00 00 04 00 00 00 00 01 ff ff ff ff

------------[ cut here ]------------

kernel BUG at mm/page_alloc.c:2876!

cpu 0x0: Vector: 700 (Program Check) at [c0000000005cbbe0]

    pc: c0000000004b5160: .setup_per_cpu_pageset+0x24/0x48

    lr: c0000000004b5160: .setup_per_cpu_pageset+0x24/0x48

    sp: c0000000005cbe60

   msr: 8000000000029032

  current = 0xc0000000004fd1b0

  paca    = 0xc0000000004fdd80

    pid   = 0, comm = swapper

kernel BUG at mm/page_alloc.c:2876!

enter ? for help

Thanks & Regards,
Kamalesh Babulal.