On Mon, Jun 24, 2019 at 08:51:04PM +0700, Phong Tran wrote:
> [arch/arm/net/bpf_jit_32.c:618]: (error) Shifting signed 32-bit value by
> 31 bits is undefined behaviour
>
> Signed-off-by: Phong Tran <tranmanphong@xxxxxxxxx>
> ---
> arch/arm/net/bpf_jit_32.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c
> index adff54c312bf..4e8ad26305ca 100644
> --- a/arch/arm/net/bpf_jit_32.c
> +++ b/arch/arm/net/bpf_jit_32.c
> @@ -612,7 +612,7 @@ static inline void emit_a32_mov_se_i64(const bool is64, const s8 dst[],
> const u32 val, struct jit_ctx *ctx) {
> u64 val64 = val;
>
> - if (is64 && (val & (1<<31)))
> + if (is64 && (val & (BIT(31))))
Extra parens are not necessary, please remove.
> val64 |= 0xffffffff00000000ULL;
> emit_a32_mov_i64(dst, val64, ctx);
> }
> --
> 2.11.0
>
>
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up
According to speedtest.net: 11.9Mbps down 500kbps up
