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| author | Martin KaFai Lau <kafai@fb.com> | 2020-09-15 11:29:59 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-09-15 18:09:43 -0700 |
| commit | 8c33dadc3e0eef1599811a55d748a0b95da0317d (patch) | |
| tree | d0e5a578f850ece30d077d78a24ba6a2b34ab58b /kernel | |
| parent | 65dce596e2b839bc324b9543eac99a923eb6d794 (diff) | |
bpf: Bpf_skc_to_* casting helpers require a NULL check on sk
The bpf_skc_to_* type casting helpers are available to
BPF_PROG_TYPE_TRACING. The traced PTR_TO_BTF_ID may be NULL.
For example, the skb->sk may be NULL. Thus, these casting helpers
need to check "!sk" also and this patch fixes them.
Fixes: 0d4fad3e57df ("bpf: Add bpf_skc_to_udp6_sock() helper")
Fixes: 478cfbdf5f13 ("bpf: Add bpf_skc_to_{tcp, tcp_timewait, tcp_request}_sock() helpers")
Fixes: af7ec1383361 ("bpf: Add bpf_skc_to_tcp6_sock() helper")
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200915182959.241101-1-kafai@fb.com
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions