netdev - [PATCH bpf-next 0/3] bpf: Allow helpers access ptr_to_btf

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Message-Id: <20230313235845.61029-1-alexei.starovoitov@gmail.com>
Date:   Mon, 13 Mar 2023 16:58:42 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     davem@...emloft.net
Cc:     daniel@...earbox.net, andrii@...nel.org, martin.lau@...nel.org,
        void@...ifault.com, davemarchevsky@...a.com, tj@...nel.org,
        memxor@...il.com, netdev@...r.kernel.org, bpf@...r.kernel.org,
        kernel-team@...com
Subject: [PATCH bpf-next 0/3] bpf: Allow helpers access ptr_to_btf_id.

From: Alexei Starovoitov <ast@...nel.org>

Allow code like:
bpf_strncmp(task->comm, 16, "foo");

Alexei Starovoitov (3):
  bpf: Fix bpf_strncmp proto.
  bpf: Allow helpers access trusted PTR_TO_BTF_ID.
  selftests/bpf: Add various tests to check helper access into
    ptr_to_btf_id.

 kernel/bpf/helpers.c                          |  2 +-
 kernel/bpf/verifier.c                         | 15 ++++++++
 .../selftests/bpf/progs/task_kfunc_failure.c  | 36 +++++++++++++++++++
 .../selftests/bpf/progs/task_kfunc_success.c  |  4 +++
 4 files changed, 56 insertions(+), 1 deletion(-)

-- 
2.34.1