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| author |   Anton Protopopov <aspsk@isovalent.com> | 2023-07-19 09:29:50 +0000 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2023-07-19 09:48:52 -0700 |
| commit | 5ba190c29cf92f157bd63c9909c7050d6dc43df7 (patch) | |
| tree | 486ef54af06582d7b78ab480a9ca0f7826915f32 /kernel/bpf/helpers.c | |
| parent | bpf: consider types listed in reg2btf_ids as trusted (diff) | |
| download | linux-rng-5ba190c29cf92f157bd63c9909c7050d6dc43df7.tar.xz linux-rng-5ba190c29cf92f157bd63c9909c7050d6dc43df7.zip | |
bpf: consider CONST_PTR_TO_MAP as trusted pointer to struct bpf_map
Add the BTF id of struct bpf_map to the reg2btf_ids array. This makes the
values of the CONST_PTR_TO_MAP type to be considered as trusted by kfuncs.
This, in turn, allows users to execute trusted kfuncs which accept `struct
bpf_map *` arguments from non-tracing programs.
While exporting the btf_bpf_map_id variable, save some bytes by defining
it as BTF_ID_LIST_GLOBAL_SINGLE (which is u32[1]) and not as BTF_ID_LIST
(which is u32[64]).
Signed-off-by: Anton Protopopov <aspsk@isovalent.com>
Link: https://lore.kernel.org/r/20230719092952.41202-3-aspsk@isovalent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/helpers.c')
0 files changed, 0 insertions, 0 deletions