On Tue, Mar 3, 2020 at 5:56 PM KP Singh <kpsingh@xxxxxxxxxxxx> wrote: > > From: KP Singh <kpsingh@xxxxxxxxxx> > > - Allow BPF_MODIFY_RETURN attachment only to functions that are: > > * Whitelisted by for error injection i.e. by checking > within_error_injection_list. Similar disucssions happened for the > bpf_overrie_return helper. 2 typos: discussions and bpf_override_return ;) > > * security hooks, this is expected to be cleaned up with the LSM > changes after the KRSI patches introduce the LSM_HOOK macro: > > https://lore.kernel.org/bpf/20200220175250.10795-1-kpsingh@xxxxxxxxxxxx/ > > - The attachment is currently limited to functions that return an int. > This can be extended later other types (e.g. PTR). > > Signed-off-by: KP Singh <kpsingh@xxxxxxxxxx> > --- Acked-by: Andrii Nakryiko <andriin@xxxxxx> > kernel/bpf/btf.c | 28 ++++++++++++++++++++-------- > kernel/bpf/verifier.c | 31 +++++++++++++++++++++++++++++++ > 2 files changed, 51 insertions(+), 8 deletions(-) > [...]
