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Message-Id: <20240118153936.11769-1-daniel@iogearbox.net>
Date: Thu, 18 Jan 2024 16:39:36 +0100
From: Daniel Borkmann <daniel@...earbox.net>
To: davem@...emloft.net
Cc: kuba@...nel.org,
pabeni@...hat.com,
edumazet@...gle.com,
daniel@...earbox.net,
ast@...nel.org,
andrii@...nel.org,
martin.lau@...ux.dev,
netdev@...r.kernel.org,
bpf@...r.kernel.org
Subject: pull-request: bpf 2024-01-18
Hi David, hi Jakub, hi Paolo, hi Eric,
The following pull-request contains BPF updates for your *net* tree.
We've added 10 non-merge commits during the last 5 day(s) which contain
a total of 12 files changed, 806 insertions(+), 51 deletions(-).
The main changes are:
1) Fix an issue in bpf_iter_udp under backward progress which prevents user
space process from finishing iteration, from Martin KaFai Lau.
2) Fix BPF verifier to reject variable offset alu on registers with a type
of PTR_TO_FLOW_KEYS to prevent oob access, from Hao Sun.
3) Follow up fixes for kernel- and libbpf-side logic around handling arg:ctx
tagged arguments of BPF global subprogs, from Andrii Nakryiko.
Please consider pulling these changes from:
git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git tags/for-netdev
Thanks a lot!
Also thanks to reporters, reviewers and testers of commits in this pull-request:
Aditi Ghag, Yonghong Song
----------------------------------------------------------------
The following changes since commit 894d7508316e7ad722df597d68b4b1797a9eee11:
net: netdev_queue: netdev_txq_completed_mb(): fix wake condition (2024-01-13 18:26:23 +0000)
are available in the Git repository at:
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git tags/for-netdev
for you to fetch changes up to 35ac085a94efe82d906d3a812612d432aa267cbe:
Merge branch 'tighten-up-arg-ctx-type-enforcement' (2024-01-17 20:20:06 -0800)
----------------------------------------------------------------
bpf-for-netdev
----------------------------------------------------------------
Alexei Starovoitov (2):
Merge branch 'bpf-fix-backward-progress-bug-in-bpf_iter_udp'
Merge branch 'tighten-up-arg-ctx-type-enforcement'
Andrii Nakryiko (5):
libbpf: feature-detect arg:ctx tag support in kernel
bpf: extract bpf_ctx_convert_map logic and make it more reusable
bpf: enforce types for __arg_ctx-tagged arguments in global subprogs
selftests/bpf: add tests confirming type logic in kernel for __arg_ctx
libbpf: warn on unexpected __arg_ctx type when rewriting BTF
Hao Sun (2):
bpf: Reject variable offset alu on PTR_TO_FLOW_KEYS
selftests/bpf: Add test for alu on PTR_TO_FLOW_KEYS
Martin KaFai Lau (3):
bpf: iter_udp: Retry with a larger batch size without going back to the previous bucket
bpf: Avoid iter->offset making backward progress in bpf_iter_udp
selftests/bpf: Test udp and tcp iter batching
include/linux/btf.h | 2 +-
kernel/bpf/btf.c | 231 ++++++++++++++++++---
kernel/bpf/verifier.c | 4 +
net/ipv4/udp.c | 22 +-
tools/lib/bpf/libbpf.c | 142 ++++++++++++-
.../selftests/bpf/prog_tests/sock_iter_batch.c | 135 ++++++++++++
.../selftests/bpf/prog_tests/test_global_funcs.c | 13 ++
.../testing/selftests/bpf/progs/bpf_tracing_net.h | 3 +
.../testing/selftests/bpf/progs/sock_iter_batch.c | 91 ++++++++
tools/testing/selftests/bpf/progs/test_jhash.h | 31 +++
.../selftests/bpf/progs/verifier_global_subprogs.c | 164 ++++++++++++++-
.../bpf/progs/verifier_value_illegal_alu.c | 19 ++
12 files changed, 806 insertions(+), 51 deletions(-)
create mode 100644 tools/testing/selftests/bpf/prog_tests/sock_iter_batch.c
create mode 100644 tools/testing/selftests/bpf/progs/sock_iter_batch.c
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