netdev - [PATCH v2 bpf-next 0/2] Fix bpf_tcp_sock and bpf_sk_fullsock issue related to bpf_sk

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Message-ID: <20190301194918.2856285-1-kafai@fb.com>
Date:   Fri, 1 Mar 2019 11:49:18 -0800
From:   Martin KaFai Lau <kafai@...com>
To:     <netdev@...r.kernel.org>
CC:     Alexei Starovoitov <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>, <kernel-team@...com>
Subject: [PATCH v2 bpf-next 0/2] Fix bpf_tcp_sock and bpf_sk_fullsock issue related to bpf_sk_release

This set addresses issue about accessing invalid
ptr returned from bpf_tcp_sock() and bpf_sk_fullsock()
after bpf_sk_release().

v2:
- Remove refcount_id arg from release_reference() because
  id == refcount_id
- Add a WARN_ON_ONCE to mark_ptr_or_null_regs() to catch
  an internal verifier bug.

Martin KaFai Lau (2):
  bpf: Fix bpf_tcp_sock and bpf_sk_fullsock issue related to
    bpf_sk_release
  bpf: Test ref release issue in bpf_tcp_sock and bpf_sk_fullsock.

 include/linux/bpf_verifier.h                  |  9 ++
 kernel/bpf/verifier.c                         | 86 +++++++++++--------
 .../selftests/bpf/verifier/ref_tracking.c     | 73 ++++++++++++++++
 3 files changed, 134 insertions(+), 34 deletions(-)

-- 
2.17.1