Re: 2.6.33-rc1 build failure: copy_from_user() buffer size is not provably correct

From: KOSAKI Motohiro
Date: Mon Dec 21 2009 - 04:07:40 EST


> This is triggered if using the 'allyesconfig' target.
>
> A similar issue was this: 2886a8bdfa007053b414ab01741a98c18c376a85
>
>
> debian-build:/tmp/all-yes-config/2.6.33-rc1# make deb-pkg
> make KBUILD_SRC=
> CHK include/linux/version.h
> CHK include/generated/utsrelease.h
> CALL scripts/checksyscalls.sh
> CHK include/generated/compile.h
> VDSOSYM arch/x86/vdso/vdso32-int80-syms.lds
> VDSOSYM arch/x86/vdso/vdso32-sysenter-syms.lds
> VDSOSYM arch/x86/vdso/vdso32-syms.lds
> LD arch/x86/vdso/built-in.o
> LD arch/x86/built-in.o
> CC mm/migrate.o
> In file included from /tmp/all-yes-config/2.6.33-
> rc1/arch/x86/include/asm/uaccess.h:571,
> from include/linux/uaccess.h:5,
> from include/linux/highmem.h:6,
> from include/linux/pagemap.h:10,
> from include/linux/mempolicy.h:62,
> from include/linux/migrate.h:5,
> from mm/migrate.c:15:
> In function âcopy_from_userâ,
> inlined from âdo_pages_statâ at mm/migrate.c:1009:
> /tmp/all-yes-config/2.6.33-rc1/arch/x86/include/asm/uaccess_32.h:213: error:
> call to âcopy_from_user_overflowâ declared with attribute error:
> copy_from_user() buffer size is not provably correct

afaik, ingo already queued this fix.
please wait (very) few days.

thanks.




> make[3]: *** [mm/migrate.o] Error 1
> make[2]: *** [mm] Error 2
> make[1]: *** [deb-pkg] Error 2
> make: *** [deb-pkg] Error 2
>
>
> Regards,
> Ritesh
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