Re: [Xenomai-help] Almost running - kernel BUG in add_preempt_count at kernel/sched.c:2819!

[Jan Kiszka <jan.kiszka@domain.hid>]

[-- Attachment #1: Type: text/plain, Size: 3069 bytes --]

Gary Wallace wrote:
>   My story is the same as Jim's except I used 2.6.16.6 and a gcc 3.3.3
> cross compiler.  The ipipe patch applies just fine after the motorola
> patch.  Building with ipipe disabled results in a kernel that boots
> and runs just fine.  When ipipe is enabled, I sometimes get the error
> Jim received, sometimes the kernel just hangs.  There is never a stack
> trace on the console.  I've tried ipipe versions 1.2-01, 1.2-03,
> 1.3-00, 1.3-02, and 1.3-03, all with the same results (either the
> kernel hangs or I get the kernel BUG error).
> 
>   I haven't been able to get the board to boot without using the
> motorola patch.
> 
>   I have tried building with ipipe-tracer, but this results in compile
> errors (the tracer patch applies just fine).  Here are the compile
> errors when ipipe-tracer is enabled:
> 
> # make
>   CHK     include/linux/version.h
>   CHK     include/linux/compile.h
>   CHK     usr/initramfs_list
>   UIMAGE  arch/ppc/boot/images/uImage
> "mkimage" command not found - U-Boot images will not be built
>   Image: arch/ppc/boot/images/uImage not made
>   AS      arch/ppc/boot/simple/head.o
>   AS      arch/ppc/boot/simple/relocate.o
>   CC      arch/ppc/boot/simple/misc.o
>   CC      arch/ppc/boot/simple/misc-mv64x60.o
> powerpc-750-linux-gnu-objcopy -O elf32-powerpc \
>         --add-section=.image=arch/ppc/boot/images/vmlinux.gz \
>         --set-section-flags=.image=contents,alloc,load,readonly,data \
>         arch/ppc/boot/simple/dummy.o arch/ppc/boot/simple/image.o
> powerpc-750-linux-gnu-ld -T /usr/src/linux-2.6.14.6-ppc/arch/ppc/boot/ld.script -Ttext 0x00800000 -Bstatic -o arch/ppc/boot/simple/zvmlinux arch/ppc/boot/simple/head.o arch/ppc/boot/simple/relocate.o arch/ppc/boot/simple/misc.o arch/ppc/boot/simple/misc-mv64x60.o arch/ppc/boot/simple/image.o arch/ppc/boot/common/lib.a arch/ppc/boot/lib/lib.a
> arch/ppc/boot/simple/misc.o(.text+0x10): In function `get_mem_size':
> arch/ppc/boot/simple/misc.c:87: undefined reference to `_mcount'
> arch/ppc/boot/simple/misc.o(.text+0x54): In function `decompress_kernel':
> arch/ppc/boot/simple/misc.c:93: undefined reference to `_mcount'
> arch/ppc/boot/simple/misc.o(.text+0x4b8): In function `board_isa_init':
> arch/ppc/boot/simple/misc.c:274: undefined reference to `_mcount'
> arch/ppc/boot/simple/misc.o(.text+0x4f8): In function `load_kernel':
> arch/ppc/boot/simple/misc.c:281: undefined reference to `_mcount'
> arch/ppc/boot/simple/misc-mv64x60.o(.text+0x10): In function `mv64360_get_mem_size':
> arch/ppc/boot/simple/misc-mv64x60.c:31: undefined reference to `_mcount'
> arch/ppc/boot/simple/misc-mv64x60.o(.text+0xbc):arch/ppc/boot/simple/misc-mv64x60.c:51: more undefined references to `_mcount' follow
> make[2]: *** [arch/ppc/boot/simple/zvmlinux] Error 1
> make[1]: *** [simple] Error 2
> make: *** [zImage] Error 2
> # 
> 

Philippe, can you comment on this? I do not have an PPC build
environment at hand.

@Gary: Do you get the same error without the Motorola patch?

Jan


[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 252 bytes --]