From: Yonghong Song <yhs@fb.com>
To: <ast@fb.com>, <daniel@iogearbox.net>, <netdev@vger.kernel.org>
Cc: <kernel-team@fb.com>
Subject: [PATCH net-next 0/3] bpf: improve verifier ARG_CONST_SIZE_OR_ZERO semantics
Date: Sat, 11 Nov 2017 16:00:33 -0800 [thread overview]
Message-ID: <20171112000036.3597189-1-yhs@fb.com> (raw)
This patch set intends to change verifier ARG_CONST_SIZE_OR_ZERO
semantics so that simpler bpf programs can be written with verifier
acceptance. Patch #1 comment provided the detailed examples and
the patch itself implements the new semantics. Patch #2
changes bpf_probe_read helper arg2 type from
ARG_CONST_SIZE to ARG_CONST_SIZE_OR_ZERO. Patch #3 fixed a few
test cases and added some for better coverage.
Yonghong Song (3):
bpf: improve verifier ARG_CONST_SIZE_OR_ZERO semantics
bpf: change helper bpf_probe_read arg2 type to ARG_CONST_SIZE_OR_ZERO
bpf: fix and add test cases for ARG_CONST_SIZE_OR_ZERO semantics
change
kernel/bpf/verifier.c | 40 +++++----
kernel/trace/bpf_trace.c | 8 +-
tools/testing/selftests/bpf/test_verifier.c | 131 ++++++++++++++++++++++++----
3 files changed, 142 insertions(+), 37 deletions(-)
--
2.9.5
next reply other threads:[~2017-11-12 0:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-12 0:00 Yonghong Song [this message]
2017-11-12 0:00 ` [PATCH net-next 1/3] bpf: improve verifier ARG_CONST_SIZE_OR_ZERO semantics Yonghong Song
2017-11-12 0:00 ` [PATCH net-next 2/3] bpf: change helper bpf_probe_read arg2 type to ARG_CONST_SIZE_OR_ZERO Yonghong Song
2017-11-12 11:20 ` Sergei Shtylyov
2017-11-12 0:00 ` [PATCH net-next 3/3] bpf: fix and add test cases for ARG_CONST_SIZE_OR_ZERO semantics change Yonghong Song
2017-11-14 7:20 ` [PATCH net-next 0/3] bpf: improve verifier ARG_CONST_SIZE_OR_ZERO semantics David Miller
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