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author | Willem de Bruijn <willemb@google.com> | 2018-09-24 16:49:57 -0400 |
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committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-09-25 17:31:19 +0200 |
commit | d0e13a1488ad30dc3c2c9347b931cb10f892e3a4 (patch) | |
tree | 1a15d2fdf34411e490eb568710becbf156b97dac /arch/x86/platform/efi/efi_32.c | |
parent | 7ea3c40605e9acf12f2dda26e28cd82c0dba6923 (diff) | |
download | linux-d0e13a1488ad30dc3c2c9347b931cb10f892e3a4.tar.gz |
flow_dissector: lookup netns by skb->sk if skb->dev is NULL
BPF flow dissectors are configured per network namespace. __skb_flow_dissect looks up the netns through dev_net(skb->dev). In some dissector paths skb->dev is NULL, such as for Unix sockets. In these cases fall back to looking up the netns by socket. Analyzing the codepaths leading to __skb_flow_dissect I did not find a case where both skb->dev and skb->sk are NULL. Warn and fall back to standard flow dissector if one is found. Fixes: d58e468b1112 ("flow_dissector: implements flow dissector BPF hook") Reported-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Willem de Bruijn <willemb@google.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'arch/x86/platform/efi/efi_32.c')
0 files changed, 0 insertions, 0 deletions