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arm64: Change .weak to SYM_FUNC_START_WEAK_PI for arch/arm64/lib/mem*.S
Commit 39d114d ("arm64: add KASAN support") added .weak directives to arch/arm64/lib/mem*.S instead of changing the existing SYM_FUNC_START_PI macros. This can lead to the assembly snippet `.weak memcpy ... .globl memcpy` which will produce a STB_WEAK memcpy with GNU as but STB_GLOBAL memcpy with LLVM's integrated assembler before LLVM 12. LLVM 12 (since https://reviews.llvm.org/D90108) will error on such an overridden symbol binding. Use the appropriate SYM_FUNC_START_WEAK_PI instead. Fixes: 39d114d ("arm64: add KASAN support") Reported-by: Sami Tolvanen <[email protected]> Signed-off-by: Fangrui Song <[email protected]> Tested-by: Sami Tolvanen <[email protected]> Tested-by: Nick Desaulniers <[email protected]> Reviewed-by: Nick Desaulniers <[email protected]> Cc: <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Will Deacon <[email protected]>
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