| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.11 039/115] bpf: add bpf_clone_redirect to bpf_helper_changes_pkt_data | Date | Mon, 5 Jun 2017 18:17:12 +0200 |
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4.11-stable review patch. If anyone has any objections, please let me know.
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From: Daniel Borkmann <daniel@iogearbox.net>
[ 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 | 1 + 1 file changed, 1 insertion(+)
--- a/net/core/filter.c +++ b/net/core/filter.c @@ -2266,6 +2266,7 @@ bool bpf_helper_changes_pkt_data(void *f func == bpf_skb_change_head || func == bpf_skb_change_tail || func == bpf_skb_pull_data || + func == bpf_clone_redirect || func == bpf_l3_csum_replace || func == bpf_l4_csum_replace || func == bpf_xdp_adjust_head)
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