bpf: add bpf_clone_redirect to bpf_helper_changes_pkt_data
authorDaniel Borkmann <daniel@iogearbox.net>
Wed, 24 May 2017 23:05:07 +0000 (01:05 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 7 Jun 2017 10:07:46 +0000 (12:07 +0200)
commitc1133c671a0467a8cc2fc79bdc34c764fb623043
treefec0998269ca6899dd0d77fcf60291e3d1597fed
parent988b9792b8569871ccaabc6ec0bc4d70f982be96
bpf: add bpf_clone_redirect to bpf_helper_changes_pkt_data

[ Upstream commit 41703a731066fde79c3e5ccf3391cf77a98aeda5 ]

The bpf_clone_redirect() still needs to be listed in
bpf_helper_changes_pkt_data() since we call into
bpf_try_make_head_writable() from there, thus we need
to invalidate prior pkt regs as well.

Fixes: 36bbef52c7eb ("bpf: direct packet write and access for helpers for clsact progs")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/core/filter.c