From: Yonghong Song <yhs@fb.com>
To: <bpf@vger.kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>, <kernel-team@fb.com>
Subject: [PATCH bpf-next v2 0/2] bpf: permits pointers on stack for helper calls
Date: Wed, 9 Dec 2020 17:33:48 -0800 [thread overview]
Message-ID: <20201210013348.943623-1-yhs@fb.com> (raw)
This patch permits pointers on stack for helper calls if permission is
granted. Patch #1 described the detailed usecase and Patch #2
added a test.
Changelog:
v1 -> v2:
- fix a verifier test failure due to verifier change.
Yonghong Song (2):
bpf: permits pointers on stack for helper calls
selftests/bpf: add a test for ptr_to_map_value on stack for helper
access
kernel/bpf/verifier.c | 3 ++-
tools/testing/selftests/bpf/progs/bpf_iter_task.c | 3 ++-
tools/testing/selftests/bpf/verifier/unpriv.c | 5 +++--
3 files changed, 7 insertions(+), 4 deletions(-)
--
2.24.1
next reply other threads:[~2020-12-10 1:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-10 1:33 Yonghong Song [this message]
2020-12-10 1:33 ` [PATCH bpf-next v2 1/2] bpf: permits pointers on stack for helper calls Yonghong Song
2020-12-10 17:18 ` Song Liu
2020-12-11 0:10 ` Daniel Borkmann
2020-12-11 2:24 ` Yonghong Song
2020-12-10 1:33 ` [PATCH bpf-next v2 2/2] selftests/bpf: add a test for ptr_to_map_value on stack for helper access Yonghong Song
2020-12-10 17:19 ` Song Liu
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