Re: [PATCH stable 4.4] powerpc/boot: Request no dynamic linker for boot wrapper

[Greg KH <greg@kroah.com>]

On Tue, Nov 12, 2019 at 05:59:41PM +1100, Andrew Donnellan wrote:
> From: Nicholas Piggin <npiggin@gmail.com>
> 
> Commit ff45000fcb56b5b0f1a14a865d3541746d838a0a upstream.
> 
> The boot wrapper performs its own relocations and does not require
> PT_INTERP segment. However currently we don't tell the linker that.
> 
> Prior to binutils 2.28 that works OK. But since binutils commit
> 1a9ccd70f9a7 ("Fix the linker so that it will not silently generate ELF
> binaries with invalid program headers. Fix readelf to report such
> invalid binaries.") binutils tries to create a program header segment
> due to PT_INTERP, and the link fails because there is no space for it:
> 
>   ld: arch/powerpc/boot/zImage.pseries: Not enough room for program headers, try linking with -N
>   ld: final link failed: Bad value
> 
> So tell the linker not to do that, by passing --no-dynamic-linker.
> 
> Cc: stable@vger.kernel.org
> Reported-by: Anton Blanchard <anton@samba.org>
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
> [mpe: Drop dependency on ld-version.sh and massage change log]
> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
> [ajd: backport to v4.4 (resolve conflict with a comment line)]
> Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
> ---
>  arch/powerpc/boot/wrapper | 24 +++++++++++++++++++++++-
>  1 file changed, 23 insertions(+), 1 deletion(-)

Now queud up, thanks.

greg k-h