netdev - [PATCH bpf-next 0/2] bpf: fix kernel page fault in lpm map trie_get_next

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Message-ID: <20180126230608.2175374-1-yhs@fb.com>
Date:   Fri, 26 Jan 2018 15:06:06 -0800
From:   Yonghong Song <yhs@...com>
To:     <ast@...com>, <daniel@...earbox.net>, <edumazet@...gle.com>,
        <netdev@...r.kernel.org>
CC:     <kernel-team@...com>
Subject: [PATCH bpf-next 0/2] bpf: fix kernel page fault in lpm map trie_get_next_key

A kernel page fault which happens in lpm map trie_get_next_key is reported
by syzbot and Eric. The issue was introduced by commit b471f2f1de8b
("bpf: implement MAP_GET_NEXT_KEY command for LPM_TRIE map").
Patch #1 fixed the issue in the kernel and patch #2 adds a multithreaded
test case in tools/testing/selftests/bpf/test_lpm_map.

Yonghong Song (2):
  bpf: fix kernel page fault in lpm map trie_get_next_key
  tools/bpf: add a multithreaded stress test in bpf selftests
    test_lpm_map

 kernel/bpf/lpm_trie.c                      | 26 ++++----
 tools/testing/selftests/bpf/Makefile       |  2 +-
 tools/testing/selftests/bpf/test_lpm_map.c | 95 ++++++++++++++++++++++++++++++
 3 files changed, 107 insertions(+), 16 deletions(-)

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2.9.5