bpf, arm: start flushing icache range from header
authorDaniel Borkmann <daniel@iogearbox.net>
Sat, 14 Nov 2015 00:26:53 +0000 (01:26 +0100)
committerDavid S. Miller <davem@davemloft.net>
Mon, 16 Nov 2015 19:40:49 +0000 (14:40 -0500)
commitebaef649c26b44ff28114b452fd067a270ca7f02
treec709914711a5168ae566eded4ca7faba0ac68210
parent30b50aa612018bd92f5a85534cc2668423e8c7e8
bpf, arm: start flushing icache range from header

During review I noticed that the icache range we're flushing should
start at header already and not at ctx.image.

Reason is that after 55309dd3d4cd ("net: bpf: arm: address randomize
and write protect JIT code"), we also want to make sure to flush the
random-sized trap in front of the start of the actual program (analogous
to x86). No operational differences from user side.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Nicolas Schichan <nschichan@freebox.fr>
Cc: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
arch/arm/net/bpf_jit_32.c