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| author | Hou Tao <houtao1@huawei.com> | 2024-10-24 09:35:58 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-11-17 15:08:58 +0100 |
| commit | d5092b0a1aaf35d77ebd8d33384d7930bec5cb5d (patch) | |
| tree | bbe44ecb8d8aa487aac7446426741cbb1401a09f /mm/page_alloc.c | |
| parent | 9dcf696124533ae54670f631cdece3bc80148e7f (diff) | |
bpf: Check validity of link->type in bpf_link_show_fdinfo()
[ Upstream commit 8421d4c8762bd022cb491f2f0f7019ef51b4f0a7 ]
If a newly-added link type doesn't invoke BPF_LINK_TYPE(), accessing
bpf_link_type_strs[link->type] may result in an out-of-bounds access.
To spot such missed invocations early in the future, checking the
validity of link->type in bpf_link_show_fdinfo() and emitting a warning
when such invocations are missed.
Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20241024013558.1135167-3-houtao@huaweicloud.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'mm/page_alloc.c')
0 files changed, 0 insertions, 0 deletions