Re: [uml-devel] [PATCH] Ok, I build x86-64 -skas0, and it still segfaults.

[Rob Landley <rob@landley.net>]

On Monday 14 November 2005 17:24, Rob Landley wrote:
> On Monday 14 November 2005 15:55, Jeff Dike wrote:
> > On Sun, Nov 13, 2005 at 05:32:10PM -0600, Rob Landley wrote:
> > > moan moan
>
> And proud of it!
>
> > Can you try the x86-64-clobbers-rcx patch below?
>
> Sure.  (Rummages...)
>
> > If you don't have it already, apply the fix-x86-stubs patch first.
>
> It said it was reversed, so I'm going to assume for the moment that
> 2.6.15-rc1 already has it, try the second...
>
> patching file arch/um/sys-i386/stub_segv.c
> Hunk #2 FAILED at 19.
> 1 out of 2 hunks FAILED -- saving rejects to file
> arch/um/sys-i386/stub_segv.c.rej
>
> Ok, fix that up by hand...  And the build breaks in stub_segv.c.
>
> What version are these patches against?  Let's try a straight 2.6.14...
>
> fix-x86-stubs applied cleanly.
> x86-64-clobbers-rcx...  Still fails hunk #2.
>
> Back off to a clean 2.6.14 again and try clobbers-rcx first...
>
> Still fails hunk #2.
>
> Rob

The breakage, by the way, (which occurs when you fix the failing hunk #2 up by 
hand) stems from the inability to find asm/signal.h:

 CC      arch/um/sys-x86_64/stub_segv.o
arch/um/sys-x86_64/stub_segv.c:7:24: asm/signal.h: Nie ma takiego pliku ani 
katalogu
In file included from /usr/include/linux/siginfo.h:1,
                 from /usr/include/asm-x86_64/siginfo.h:8,
                 from /usr/include/asm/siginfo.h:12,
                 from arch/um/sys-x86_64/stub_segv.c:10:
/usr/include/linux/signal.h:2:2: warning: #warning "You should include 
<signal.h>. This time I will do it for you."
In file included from /usr/include/signal.h:333,
                 from /usr/include/linux/signal.h:4,
                 from /usr/include/linux/siginfo.h:1,
                 from /usr/include/asm-x86_64/siginfo.h:8,
                 from /usr/include/asm/siginfo.h:12,
                 from arch/um/sys-x86_64/stub_segv.c:10:

And so on...  (The x86-64 server I'm borrowing is in poland, hence the weird 
file not found messages).

This is because the actual build line is this:

  gcc -Wp,-MD,arch/um/sys-x86_64/.stub_segv.o.d -Wall -Wundef 
-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common 
-ffreestanding -O2 -fomit-frame-pointer -D__arch_um__ -DSUBARCH=\"x86_64\" 
-Dvmap=kernel_vmap -Din6addr_loopback=kernel_in6addr_loopback 
-Iarch/um/include  
-I/srv/staff/rob/firmware-build/sources/packages/linux-2.6.14/arch/um/kernel/skas/include 
-fno-builtin -D_GNU_SOURCE -D_LARGEFILE64_SOURCE  -c -o 
arch/um/sys-x86_64/stub_segv.o arch/um/sys-x86_64/stub_segv.c

And neither the arch/um/include nor the arch/um/kernel/skas/include 
directories contain an "asm" symlink.

[rob@rg4 linux-2.6.14]$ find arch/um -name "asm"
[rob@rg4 linux-2.6.14]$

I have no idea if any of this helps...

Rob


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