• Vincenzo Frascino's avatar
    arm64: Fix warning in mte_get_random_tag() · fb3825cb
    Vincenzo Frascino authored
    The simplification of mte_get_random_tag() caused the introduction of the
    warning below:
    
    In file included from arch/arm64/include/asm/kasan.h:9,
                     from include/linux/kasan.h:16,
                     from mm/kasan/common.c:14:
    mm/kasan/common.c: In function ‘mte_get_random_tag’:
    arch/arm64/include/asm/mte-kasan.h:45:9: warning: ‘addr’ is used
                                             uninitialized [-Wuninitialized]
       45 |         asm(__MTE_PREAMBLE "irg %0, %0"
          |
    
    Fix the warning using "=r" for the address in the asm inline.
    
    Fixes: c8f8de4c
    
     ("arm64: kasan: simplify and inline MTE functions")
    Cc: Catalin Marinas <catalin.marinas@arm.com>
    Cc: Will Deacon <will@kernel.org>
    Cc: Andrey Konovalov <andreyknvl@google.com>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Signed-off-by: Vincenzo Frascino's avatarVincenzo Frascino <vincenzo.frascino@arm.com>
    fb3825cb