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bpf: Fix build without BPF_LSM.

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resolve_btfids doesn't like empty set. Add unused ID when BPF_LSM is off.

Fixes: 1e6c62a882 ("bpf: Introduce sleepable BPF programs")
Reported-by: Björn Töpel <bjorn.topel@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Song Liu <songliubraving@fb.com>
Acked-by: KP Singh <kpsingh@google.com>
Link: https://lore.kernel.org/bpf/20200831163132.66521-1-alexei.starovoitov@gmail.com
This commit is contained in:
Alexei Starovoitov 2020-08-31 09:31:32 -07:00 committed by Daniel Borkmann
parent 9667305c63
commit 29523c5e67
1 changed files with 2 additions and 0 deletions
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2
kernel/bpf/verifier.c
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@ -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)