tree fd2f63ee5b1cf7921993a4f9a0f35c80ac2e5485
parent e3d8ecb70e16412b14fb11c1b68ecb533bd4ea64
author Alexei Starovoitov <ast@plumgrid.com> 1431411916 -0700
committer David S. Miller <davem@davemloft.net> 1431486788 -0400

x86: bpf_jit: fix FROM_BE16 and FROM_LE16/32 instructions

FROM_BE16:
'ror %reg, 8' doesn't clear upper bits of the register,
so use additional 'movzwl' insn to zero extend 16 bits into 64

FROM_LE16:
should zero extend lower 16 bits into 64 bit

FROM_LE32:
should zero extend lower 32 bits into 64 bit

Fixes: 89aa075832b0 ("net: sock: allow eBPF programs to be attached to sockets")
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>