diff options
| author | Alexei Starovoitov <ast@fb.com> | 2016-09-01 18:37:21 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-17 21:55:15 +0100 |
| commit | 3c4bb079e16e222324c68d7594b1ab6f699edfca (patch) | |
| tree | 2faaa46638307348b2a1cda220cd24584c4c43a5 /mm/hugetlb.c | |
| parent | ff3c3b181c5ee5930b9cc6ca59c4c985a3d93220 (diff) | |
bpf: support 8-byte metafield access
commit cedaf52693f02372010548c63b2e63228b959099 upstream.
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>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/hugetlb.c')
0 files changed, 0 insertions, 0 deletions