linux-kernel - [PATCH bpf-next v2 0/2] bpf: Fix a umin

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Date:   Tue, 14 Mar 2023 16:34:22 -0400
From:   Xu Kuohai <xukuohai@...weicloud.com>
To:     bpf@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        John Fastabend <john.fastabend@...il.com>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Song Liu <song@...nel.org>, Yonghong Song <yhs@...com>,
        KP Singh <kpsingh@...nel.org>,
        Stanislav Fomichev <sdf@...gle.com>,
        Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        Mykola Lysenko <mykolal@...com>, Shuah Khan <shuah@...nel.org>
Subject: [PATCH bpf-next v2 0/2] bpf: Fix a umin > umax reg bound error

From: Xu Kuohai <xukuohai@...wei.com>

This patchset fixes a umin > umax reg bound error and adds cases for it.

v2:
1. add bound check to avoid min > max 
2. update 32-bit reg min/max when 64-bit reg value is a constant
3. add Fixes tag

v1: https://lore.kernel.org/bpf/20230307220449.2933650-1-xukuohai@huaweicloud.com/

Xu Kuohai (2):
  bpf: Fix a umin > umax reg bound error
  selftests/bpf: check bounds not in the 32-bit range

 kernel/bpf/verifier.c                         | 143 ++++++++++++------
 tools/testing/selftests/bpf/verifier/bounds.c | 121 +++++++++++++++
 2 files changed, 214 insertions(+), 50 deletions(-)

-- 
2.30.2