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    SubjectRegression: ppc powerstation boot hang caused by slab initialisation code
    I'm getting a boot hang on my powerstation with recent kernels.  It
    hangs in the early prom init code:

    Please wait, loading kernel...
    Elf64 kernel loaded...
    Loading ramdisk...
    ramdisk loaded at 02500000, size: 8280 Kbytes
    OF stdout device is: /ht/isa@8/serial@2f8
    Preparing to boot Linux version 2.6.30 (jejb@claymoor) (gcc version
    4.3.3 (Debian 4.3.3-10) ) #1 SMP Mon Jun 22 09:59:35 CDT 2009
    command line: root=/dev/sda3 ro console=ttyS0,19200n1
    memory layout at init:
    alloc_bottom : 0000000002d16000
    alloc_top : 0000000030000000
    alloc_top_hi : 0000000080000000
    rmo_top : 0000000030000000
    ram_top : 0000000080000000
    instantiating rtas at 0x000000002fff5000... done
    boot cpu hw idx 0000000000000000
    starting cpu hw idx 0000000000000001... done
    starting cpu hw idx 0000000000000002... done
    starting cpu hw idx 0000000000000003... done
    copying OF device tree...
    Building dt strings...
    Building dt structure...
    Device tree strings 0x0000000003117000 -> 0x0000000003117640
    Device tree struct 0x0000000003118000 -> 0x000000000311b000
    Calling quiesce...
    returning from prom_init

    Git bisect identifies this commit:

    commit 83b519e8b9572c319c8e0c615ee5dd7272856090
    Author: Pekka Enberg <>
    Date: Wed Jun 10 19:40:04 2009 +0300

    slab: setup allocators earlier in the boot sequence

    So it's something do do with early slab initialisation. I'll try to
    track it down, but reverting it is hard because it seems to have a chain
    of dependent commits.


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      Last update: 2009-06-23 00:13    [W:0.020 / U:77.712 seconds]
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