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H A Dlog.c24bc8088 Thu Apr 06 18:41:53 CDT 2023 Andrii Nakryiko <andrii@kernel.org> bpf: Ignore verifier log reset in BPF_LOG_KERNEL mode

Verifier log position reset is meaningless in BPF_LOG_KERNEL mode, so
just exit early in bpf_vlog_reset() if log->level is BPF_LOG_KERNEL.

This avoid meaningless put_user() into NULL log->ubuf.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Lorenz Bauer <lmb@isovalent.com>
Link: https://lore.kernel.org/bpf/20230406234205.323208-8-andrii@kernel.org