2015-02-09 18:13:30

by Lad, Prabhakar

Subject: Build breakage for allmodconfig

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.

Regards,
--Prabhakar Lad

2015-02-10 08:04:42

by Andrey Ryabinin

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
>