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(parent: b1a7a48) | patch
bpf: Ignore verifier log reset in BPF_LOG_KERNEL mode
authorAndrii Nakryiko <andrii@kernel.org>
Thu, 6 Apr 2023 23:41:53 +0000 (16:41 -0700)
committerDaniel Borkmann <daniel@iogearbox.net>
Tue, 11 Apr 2023 16:05:43 +0000 (18:05 +0200)
commit24bc80887adb4d6fc0057d4f14fabeaa4502b2a0
tree3358cbc36e0e53f8512f00586215f715f0ed763atree | snapshot
parentb1a7a480a1120d4f70305f5e8859f527e0efe4a5commit | diff
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
kernel/bpf/log.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git