linux-kernel - Re: Build breakage for allmodconfig

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Date:	Tue, 10 Feb 2015 11:04:37 +0300
From:	Andrey Ryabinin <a.ryabinin@...sung.com>
To:	"Lad, Prabhakar" <prabhakar.csengg@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Build breakage for allmodconfig

On 02/09/2015 09:12 PM, Lad, Prabhakar wrote:
> Hi Andrey,
> 
> There is build breakage for allmodconfig with commit id "kasan: enable
> instrumentation of global variables"
> f39182cbcd0122ad2c943317b5f07eba91b2cfe5 on linux-next.
> 
> scripts/kconfig/conf --silentoldconfig Kconfig
> scripts/Makefile.kasan:20: CONFIG_KASAN: compiler does not support all
> options. Trying minimal configuration
>   SYSTBL  arch/x86/syscalls/../include/generated/asm/syscalls_32.h
>   SYSHDR  arch/x86/syscalls/../include/generated/asm/unistd_32_ia32.h
>   SYSHDR  arch/x86/syscalls/../include/generated/asm/unistd_64_x32.h
>   SYSTBL  arch/x86/syscalls/../include/generated/asm/syscalls_64.h
>   SYSHDR  arch/x86/syscalls/../include/generated/uapi/asm/unistd_32.h
>   SYSHDR  arch/x86/syscalls/../include/generated/uapi/asm/unistd_64.h
>   SYSHDR  arch/x86/syscalls/../include/generated/uapi/asm/unistd_x32.h
>   HOSTCC  scripts/basic/bin2c
>   HOSTCC  arch/x86/tools/relocs_32.o
>   HOSTCC  arch/x86/tools/relocs_64.o
>   HOSTCC  arch/x86/tools/relocs_common.o
>   HOSTLD  arch/x86/tools/relocs
>   CHK     include/config/kernel.release
>   UPD     include/config/kernel.release
>   WRAP    arch/x86/include/generated/asm/clkdev.h
>   WRAP    arch/x86/include/generated/asm/cputime.h
>   WRAP    arch/x86/include/generated/asm/dma-contiguous.h
>   WRAP    arch/x86/include/generated/asm/early_ioremap.h
>   WRAP    arch/x86/include/generated/asm/mcs_spinlock.h
>   WRAP    arch/x86/include/generated/asm/scatterlist.h
>   CHK     include/generated/uapi/linux/version.h
>   UPD     include/generated/uapi/linux/version.h
>   CHK     include/generated/utsrelease.h
>   UPD     include/generated/utsrelease.h
>   CHECK   arch/x86/purgatory/purgatory.c
> No such file: asan-globals=1
> make[1]: *** [arch/x86/purgatory/purgatory.o] Error 1
> make: *** [archprepare] Error 2
> 
> Note: this is observed only when sparse is enabled.
> 

This is a sparse bug. Fixed in d917662d54ba("lib.c: skip --param parameters").

https://git.kernel.org/cgit/devel/sparse/sparse.git/commit/?id=d917662d54ba68d0c3b03e994cb1fa66d7b19c30


> Regards,
> --Prabhakar Lad
> 

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