4.9-stable review patch. If anyone has any objections, please let me know.
------------------ From: Daniel Borkmann <[email protected]> [ 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 <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- net/core/filter.c | 1 + 1 file changed, 1 insertion(+) --- a/net/core/filter.c +++ b/net/core/filter.c @@ -2198,6 +2198,7 @@ bool bpf_helper_changes_skb_data(void *f func == bpf_skb_change_proto || func == bpf_skb_change_tail || func == bpf_skb_pull_data || + func == bpf_clone_redirect || func == bpf_l3_csum_replace || func == bpf_l4_csum_replace) return true;
