diff options
| author | Yonghong Song <[email protected]> | 2018-09-27 14:37:30 -0700 |
|---|---|---|
| committer | Daniel Borkmann <[email protected]> | 2018-09-28 14:15:19 +0200 |
| commit | 5bf7a60b8e70969f65c961d7e2c4eb40eb2c664d (patch) | |
| tree | 97159aaae6aa1e3502737f33f7f2d0e42b4239b2 /tools/perf/scripts/python/syscall-counts.py | |
| parent | 78e6e5c11acef7dae81d7f0e919ad5563a611a6a (diff) | |
bpf: permit CGROUP_DEVICE programs accessing helper bpf_get_current_cgroup_id()
Currently, helper bpf_get_current_cgroup_id() is not permitted
for CGROUP_DEVICE type of programs. If the helper is used
in such cases, the verifier will log the following error:
0: (bf) r6 = r1
1: (69) r7 = *(u16 *)(r6 +0)
2: (85) call bpf_get_current_cgroup_id#80
unknown func bpf_get_current_cgroup_id#80
The bpf_get_current_cgroup_id() is useful for CGROUP_DEVICE
type of programs in order to customize action based on cgroup id.
This patch added such a support.
Cc: Roman Gushchin <[email protected]>
Signed-off-by: Yonghong Song <[email protected]>
Acked-by: Alexei Starovoitov <[email protected]>
Acked-by: Roman Gushchin <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions