linux-kernel - Re: [tip:x86/urgent] x86: Use $(OBJDUMP) instead of plain objdump

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Date:	Mon, 01 Dec 2014 20:48:19 +0000
From:	Chris Clayton <chris2553@...glemail.com>
To:	linux-kernel@...r.kernel.org, eternal.n08@...il.com,
	keescook@...omium.org, hpa@...ux.intel.com, hpa@...or.com,
	tglx@...utronix.de, bp@...e.de, mingo@...nel.org,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/urgent] x86: Use $(OBJDUMP) instead of plain objdump

Hi,

Is it planned to get this fix through in time for release of 3.18? It appears to have been in -next for a week.

Chris

On 11/23/14 20:24, tip-bot for Chris Clayton wrote:
> Commit-ID:  e2e68ae688b0a3766cd75aedf4ed4e39be402009
> Gitweb:     http://git.kernel.org/tip/e2e68ae688b0a3766cd75aedf4ed4e39be402009
> Author:     Chris Clayton <chris2553@...glemail.com>
> AuthorDate: Sat, 22 Nov 2014 09:51:10 +0000
> Committer:  Thomas Gleixner <tglx@...utronix.de>
> CommitDate: Sun, 23 Nov 2014 21:21:53 +0100
> 
> x86: Use $(OBJDUMP) instead of plain objdump
> 
> commit e6023367d779 'x86, kaslr: Prevent .bss from overlaping initrd'
> broke the cross compile of x86. It added a objdump invocation, which
> invokes the host native objdump and ignores an active cross tool
> chain.
> 
> Use $(OBJDUMP) instead which takes the CROSS_COMPILE prefix into
> account.
> 
> [ tglx: Massage changelog and use $(OBJDUMP) ]
> 
> Fixes: e6023367d779 'x86, kaslr: Prevent .bss from overlaping initrd'
> Signed-off-by: Chris Clayton <chris2553@...glemail.com>
> Acked-by: Kees Cook <keescook@...omium.org>
> Acked-by: Borislav Petkov <bp@...e.de>
> Cc: Junjie Mao <eternal.n08@...il.com>
> Cc: Ingo Molnar <mingo@...nel.org>
> Cc: H. Peter Anvin <hpa@...ux.intel.com>
> Cc: stable@...r.kernel.org
> Link: http://lkml.kernel.org/r/54705C8E.1080400@googlemail.com
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> ---
>  arch/x86/boot/compressed/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
> index be1e07d..45abc36 100644
> --- a/arch/x86/boot/compressed/Makefile
> +++ b/arch/x86/boot/compressed/Makefile
> @@ -76,7 +76,7 @@ suffix-$(CONFIG_KERNEL_XZ)	:= xz
>  suffix-$(CONFIG_KERNEL_LZO) 	:= lzo
>  suffix-$(CONFIG_KERNEL_LZ4) 	:= lz4
>  
> -RUN_SIZE = $(shell objdump -h vmlinux | \
> +RUN_SIZE = $(shell $(OBJDUMP) -h vmlinux | \
>  	     perl $(srctree)/arch/x86/tools/calc_run_size.pl)
>  quiet_cmd_mkpiggy = MKPIGGY $@
>        cmd_mkpiggy = $(obj)/mkpiggy $< $(RUN_SIZE) > $@ || ( rm -f $@ ; false )
> 
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