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authorDaniel Borkmann <daniel@iogearbox.net>2018-06-02 23:06:37 +0200
committerAlexei Starovoitov <ast@kernel.org>2018-06-03 07:46:55 -0700
commit1fbc2e0cfcf9677683aea2b1f9ea76fbdc6fb6d1 (patch)
tree6e59f51bb75c719968536dabb35e6ababf68bff8 /tools/bpf
parentcb20b08ead401fd17627a36f035c0bf5bfee5567 (diff)
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bpf: make sure to clear unused fields in tunnel/xfrm state fetch
Since the remaining bits are not filled in struct bpf_tunnel_key resp. struct bpf_xfrm_state and originate from uninitialized stack space, we should make sure to clear them before handing control back to the program. Also add a padding element to struct bpf_xfrm_state for future use similar as we have in struct bpf_tunnel_key and clear it as well. struct bpf_xfrm_state { __u32 reqid; /* 0 4 */ __u32 spi; /* 4 4 */ __u16 family; /* 8 2 */ /* XXX 2 bytes hole, try to pack */ union { __u32 remote_ipv4; /* 4 */ __u32 remote_ipv6[4]; /* 16 */ }; /* 12 16 */ /* size: 28, cachelines: 1, members: 4 */ /* sum members: 26, holes: 1, sum holes: 2 */ /* last cacheline: 28 bytes */ }; Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/bpf')
0 files changed, 0 insertions, 0 deletions