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| author | Alexei Starovoitov <ast@fb.com> | 2016-09-01 18:37:21 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-09-02 10:46:44 -0700 |
| commit | ea2e7ce5d0fc878463ba39deb46cf2ab20398fd2 (patch) | |
| tree | 7b67c9e451afca1b570835bbd75d9be7aebc931e /kernel/trace | |
| parent | 569e937e0100c8841619bd2150d15682141a6b0b (diff) | |
| download | linux-ea2e7ce5d0fc878463ba39deb46cf2ab20398fd2.tar.gz linux-ea2e7ce5d0fc878463ba39deb46cf2ab20398fd2.tar.bz2 linux-ea2e7ce5d0fc878463ba39deb46cf2ab20398fd2.zip | |
bpf: support 8-byte metafield access
The verifier supported only 4-byte metafields in
struct __sk_buff and struct xdp_md. The metafields in upcoming
struct bpf_perf_event are 8-byte to match register width in struct pt_regs.
Teach verifier to recognize 8-byte metafield access.
The patch doesn't affect safety of sockets and xdp programs.
They check for 4-byte only ctx access before these conditions are hit.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/trace')
0 files changed, 0 insertions, 0 deletions