Commit e0aee1fa authored by Andrii Nakryiko's avatar Andrii Nakryiko Committed by Daniel Borkmann
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libbpf: Don't enforce unnecessary verifier log restrictions on libbpf side 



This basically prevents any forward compatibility. And we either way
just return -EINVAL, which would otherwise be returned from bpf()
syscall anyways.

Similarly, drop enforcement of non-NULL log_buf when log_level > 0. This
won't be true anymore soon.

Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Acked-by: default avatarLorenz Bauer <lmb@isovalent.com>
Link: https://lore.kernel.org/bpf/20230406234205.323208-5-andrii@kernel.org
parent 12166409

tools/lib/bpf/bpf.c

+0 −4
Original line number Diff line number Diff line
@@ -290,10 +290,6 @@ int bpf_prog_load(enum bpf_prog_type prog_type, 


	if (!!log_buf != !!log_size)

		return libbpf_err(-EINVAL);

	if (log_level > (4 | 2 | 1))

		return libbpf_err(-EINVAL);

	if (log_level && !log_buf)

		return libbpf_err(-EINVAL);



	func_info_rec_size = OPTS_GET(opts, func_info_rec_size, 0);

	func_info = OPTS_GET(opts, func_info, NULL);