> On Aug 31, 2020, at 9:31 AM, Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx> wrote:
>
> From: Alexei Starovoitov <ast@xxxxxxxxxx>
>
> resolve_btfids doesn't like empty set. Add unused ID when BPF_LSM is off.
>
> Reported-by: Björn Töpel <bjorn.topel@xxxxxxxxx>
> Fixes: 1e6c62a88215 ("bpf: Introduce sleepable BPF programs")
> Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
Thanks for the fix!
Tested-by: Song Liu <songliubraving@xxxxxx>
> ---
> kernel/bpf/verifier.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
> index 3ebfdb7bd427..b4c22b5ce5a2 100644
> --- a/kernel/bpf/verifier.c
> +++ b/kernel/bpf/verifier.c
> @@ -11008,6 +11008,8 @@ BTF_SET_START(btf_sleepable_lsm_hooks)
> #ifdef CONFIG_BPF_LSM
> BTF_ID(func, bpf_lsm_file_mprotect)
> BTF_ID(func, bpf_lsm_bprm_committed_creds)
> +#else
> +BTF_ID_UNUSED
> #endif
> BTF_SET_END(btf_sleepable_lsm_hooks)
>
> --
> 2.23.0
>
