Re: 2.6.21-rc6-mm1 USB related boot hang

On Thu, Apr 12, 2007 at 09:47:47AM -0700, Andrew Morton wrote:
> On Thu, 12 Apr 2007 13:42:57 +0200 Helge Hafting <[email protected]> wrote:
> 
> > Jiri Kosina wrote:
> > > On Thu, 12 Apr 2007, Jiri Kosina wrote:
> > >
> > >   
> > >> Could you please
> > >> - try booting without any HID devices plugged in (i.e. usb mice, usb 
> > >>   keyboards) if the problem persists?
> > >> - recompile 2.6.21-rc6-mm1 with git-hid.patch reverted to see if it helps?
> > >>     
> > >
> > > Do you compile with CONFIG_HIDRAW?
> > >   
> > No, that one is not set. 
> > 
> > I did use the new SLUB thing - could that possibly be the cause?
> 
> yup.

Went back to SLAB, got a compile error. Did a make clean
and compiled again. Got some warnings:

  LD      vmlinux
  SYSMAP  System.map
  SYSMAP  .tmp_System.map
  MODPOST vmlinux
WARNING: init/built-in.o - Section mismatch: reference to
.init.text:kernel_init
 from .text.rest_init after 'rest_init' (at offset 0xe)
WARNING: mm/built-in.o - Section mismatch: reference to .init.text: from
.text.k
mem_cache_create after 'kmem_cache_create' (at offset 0x40b)
WARNING: mm/built-in.o - Section mismatch: reference to .init.text: from
.text.k
mem_cache_create after 'kmem_cache_create' (at offset 0x568)
  AS      arch/x86_64/boot/bootsect.o
  LD      arch/x86_64/boot/bootsect
  AS      arch/x86_64/boot/setup.o
  LD      arch/x86_64/boot/setup
  AS      arch/x86_64/boot/compressed/head.o
  CC      arch/x86_64/boot/compressed/misc.o
  OBJCOPY arch/x86_64/boot/compressed/vmlinux.bin
  GZIP    arch/x86_64/boot/compressed/vmlinux.bin.gz
  LD      arch/x86_64/boot/compressed/piggy.o
  LD      arch/x86_64/boot/compressed/vmlinux
  OBJCOPY arch/x86_64/boot/vmlinux.bin
  HOSTCC  arch/x86_64/boot/tools/build
  BUILD   arch/x86_64/boot/bzImage
Root device is (8, 49)
Boot sector 512 bytes.
Setup is 7302 bytes.
System is 3075 kB
Kernel: arch/x86_64/boot/bzImage is ready  (#11)


Then I booted this - and it hung exactly the same way.

I thought SLUB was reasonbably safe, it is new but not marked experimental.

Helge Hafting

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