• Arnd Bergmann's avatar
    MIPS: Fix modversions · b668970e
    Arnd Bergmann authored
    kernelci.org reports tons of build warnings for linux-next:
    
    35	WARNING: "memcpy" [fs/fat/msdos.ko] has no CRC!
    35	WARNING: "__copy_user" [fs/fat/fat.ko] has no CRC!
    32	WARNING: EXPORT symbol "memset" [vmlinux] version generation failed, symbol will not be versioned.
    32	WARNING: EXPORT symbol "copy_page" [vmlinux] version generation failed, symbol will not be versioned.
    32	WARNING: EXPORT symbol "clear_page" [vmlinux] version generation failed, symbol will not be versioned.
    32	WARNING: EXPORT symbol "__strncpy_from_user_nocheck_asm" [vmlinux] version generation failed, symbol will not be versioned.
    
    The problem here is mainly the missing asm/asm-prototypes.h header file
    that is supposed to include the prototypes for each symbol that is exported
    from an assembler file.
    
    A second problem is that the asm/uaccess.h header contains some but not
    all the necessary declarations for the user access helpers.
    
    Finally, the vdso build is broken once we add asm/asm-prototypes.h, so
    we have to fix this at the same time by changing the vdso header. My
    approach here is to just not look for exported symbols in the VDSO
    assembler files, as the symbols cannot be exported anyway.
    
    Fixes: 576a2f0c ("MIPS: Export memcpy & memset functions alongside their definitions")
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    Cc: Al Viro <viro@zeniv.linux.org.uk>
    Cc: James Hogan <james.hogan@imgtec.com>
    Cc: Maciej W. Rozycki <macro@imgtec.com>
    Cc: linux-mips@linux-mips.org
    Cc: linux-kernel@vger.kernel.org
    Patchwork: https://patchwork.linux-mips.org/patch/15038/
    Patchwork: https://patchwork.linux-mips.org/patch/15069/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
    b668970e
strncpy_user.S 2.1 KB