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| author | Andrii Nakryiko <andrii@kernel.org> | 2024-05-13 20:08:03 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2024-05-15 18:34:53 +0200 |
| commit | 1de27bba6d50a909647f304eadc0f7c59a842a50 (patch) | |
| tree | ebf60051d8cd8151960eadebf7d77a493a53d0d9 /tools/lib/bpf/features.c | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next (diff) | |
| download | linux-1de27bba6d50a909647f304eadc0f7c59a842a50.tar.xz linux-1de27bba6d50a909647f304eadc0f7c59a842a50.zip | |
libbpf: fix feature detectors when using token_fd
Adjust `union bpf_attr` size passed to kernel in two feature-detecting
functions to take into account prog_token_fd field.
Libbpf is avoiding memset()'ing entire `union bpf_attr` by only using
minimal set of bpf_attr's fields. Two places have been missed when
wiring BPF token support in libbpf's feature detection logic.
Fix them trivially.
Fixes: f3dcee938f48 ("libbpf: Wire up token_fd into feature probing logic")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240513180804.403775-1-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | tools/lib/bpf/features.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/lib/bpf/features.c b/tools/lib/bpf/features.c index 4e783cc7fc4b..a336786a22a3 100644 --- a/tools/lib/bpf/features.c +++ b/tools/lib/bpf/features.c @@ -22,7 +22,7 @@ int probe_fd(int fd) static int probe_kern_prog_name(int token_fd) { - const size_t attr_sz = offsetofend(union bpf_attr, prog_name); + const size_t attr_sz = offsetofend(union bpf_attr, prog_token_fd); struct bpf_insn insns[] = { BPF_MOV64_IMM(BPF_REG_0, 0), BPF_EXIT_INSN(), |