arm64: memory: Add missing brackets to untagged_addr() macro

commit d0022c0ef29b78bcbe8a5c5894bd2307143afce1 upstream.

Add brackets around the evaluation of the 'addr' parameter to the
untagged_addr() macro so that the cast to 'u64' applies to the result
of the expression.

Cc: <stable@vger.kernel.org>
Fixes: 597399d0cb91 ("arm64: tags: Preserve tags for addresses translated via TTBR1")
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
index c23c473..08df42e 100644 (file)
--- a/arch/arm64/include/asm/memory.h
+++ b/arch/arm64/include/asm/memory.h
@@ -219,7 +219,7 @@ static inline unsigned long kaslr_offset(void)
        ((__force __typeof__(addr))sign_extend64((__force u64)(addr), 55))
 
 #define untagged_addr(addr)    ({                                      \
-       u64 __addr = (__force u64)addr;                                 \
+       u64 __addr = (__force u64)(addr);                                       \
        __addr &= __untagged_addr(__addr);                              \
        (__force __typeof__(addr))__addr;                               \
 })