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authorDaniel Borkmann <daniel@iogearbox.net>2017-05-25 01:05:07 +0200
committerDavid S. Miller <davem@davemloft.net>2017-05-25 19:44:28 +0200
commit41703a731066fde79c3e5ccf3391cf77a98aeda5 (patch)
tree829c5ce74500c834675e614803c56e31e06802cc /net
parentbpf: properly reset caller saved regs after helper call and ld_abs/ind (diff)
downloadlinux-41703a731066fde79c3e5ccf3391cf77a98aeda5.tar.xz
linux-41703a731066fde79c3e5ccf3391cf77a98aeda5.zip
bpf: add bpf_clone_redirect to bpf_helper_changes_pkt_data
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>
Diffstat (limited to 'net')
-rw-r--r--net/core/filter.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/filter.c b/net/core/filter.c
index a253a6197e6b..a6bb95fa87b2 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -2281,6 +2281,7 @@ bool bpf_helper_changes_pkt_data(void *func)
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)