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Date: Sat, 16 Sep 2023 09:58:53 -0700
From: Alexei Starovoitov <alexei.starovoitov@...il.com>
To: davem@...emloft.net
Cc: kuba@...nel.org,
edumazet@...gle.com,
pabeni@...hat.com,
daniel@...earbox.net,
andrii@...nel.org,
netdev@...r.kernel.org,
bpf@...r.kernel.org,
kernel-team@...com
Subject: pull-request: bpf-next 2023-09-16
Hi David, hi Jakub, hi Paolo, hi Eric,
The following pull-request contains BPF updates for your *net-next* tree.
We've added 73 non-merge commits during the last 9 day(s) which contain
a total of 79 files changed, 5275 insertions(+), 600 deletions(-).
The main changes are:
1) Basic BTF validation in libbpf, from Andrii Nakryiko.
2) bpf_assert(), bpf_throw(), exceptions in bpf progs, from Kumar Kartikeya Dwivedi.
3) next_thread cleanups, from Oleg Nesterov.
4) Add mcpu=v4 support to arm32, from Puranjay Mohan.
5) Add support for __percpu pointers in bpf progs, from Yonghong Song.
6) Fix bpf tailcall interaction with bpf trampoline, from Leon Hwang.
7) Raise irq_work in bpf_mem_alloc while irqs are disabled to improve refill probabablity, from Hou Tao.
Please consider pulling these changes from:
git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git
Thanks a lot!
Also thanks to reporters, reviewers and testers of commits in this pull-request:
Alan Maguire, Andrey Konovalov, Dave Marchevsky, "Eric W. Biederman",
Jiri Olsa, Maciej Fijalkowski, Quentin Monnet, Russell King (Oracle),
Song Liu, Stanislav Fomichev, Yonghong Song
----------------------------------------------------------------
The following changes since commit 73be7fb14e83d24383f840a22f24d3ed222ca319:
Merge tag 'net-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net (2023-09-07 18:33:07 -0700)
are available in the Git repository at:
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git
for you to fetch changes up to ec6f1b4db95b7eedb3fe85f4f14e08fa0e9281c3:
Merge branch 'exceptions-1-2' (2023-09-16 09:36:44 -0700)
----------------------------------------------------------------
Alexei Starovoitov (7):
Merge branch 'bpf-add-support-for-local-percpu-kptr'
Merge branch 'bpf-enable-irq-after-irq_work_raise-completes'
Merge branch 'bpf-task_group_seq_get_next-misc-cleanups'
Merge branch 'bpf-x64-fix-tailcall-infinite-loop'
Merge branch 'seltests-xsk-various-improvements-to-xskxceiver'
Merge branch 'arm32-bpf-add-support-for-cpuv4-insns'
Merge branch 'exceptions-1-2'
Andrii Nakryiko (2):
libbpf: Add basic BTF sanity validation
Merge branch 'selftests/bpf: Optimize kallsyms cache'
Artem Savkov (1):
selftests/bpf: Skip module_fentry_shadow test when bpf_testmod is not available
Denys Zagorui (1):
bpftool: Fix -Wcast-qual warning
Hou Tao (3):
bpf: Enable IRQ after irq_work_raise() completes in unit_alloc()
bpf: Enable IRQ after irq_work_raise() completes in unit_free{_rcu}()
selftests/bpf: Test preemption between bpf_obj_new() and bpf_obj_drop()
Kumar Kartikeya Dwivedi (17):
bpf: Use bpf_is_subprog to check for subprogs
arch/x86: Implement arch_bpf_stack_walk
bpf: Implement support for adding hidden subprogs
bpf: Implement BPF exceptions
bpf: Refactor check_btf_func and split into two phases
bpf: Add support for custom exception callbacks
bpf: Perform CFG walk for exception callback
bpf: Treat first argument as return value for bpf_throw
mm: kasan: Declare kasan_unpoison_task_stack_below in kasan.h
bpf: Prevent KASAN false positive with bpf_throw
bpf: Detect IP == ksym.end as part of BPF program
bpf: Disallow fentry/fexit/freplace for exception callbacks
bpf: Fix kfunc callback register type handling
libbpf: Refactor bpf_object__reloc_code
libbpf: Add support for custom exception callbacks
selftests/bpf: Add BPF assertion macros
selftests/bpf: Add tests for BPF exceptions
Larysa Zaremba (1):
bpf: Allow to use kfunc XDP hints and frags together
Leon Hwang (4):
selftests/bpf: Correct map_fd to data_fd in tailcalls
bpf, x64: Comment tail_call_cnt initialisation
bpf, x64: Fix tailcall infinite loop
selftests/bpf: Add testcases for tailcall infinite loop fixing
Magnus Karlsson (10):
selftests/xsk: print per packet info in verbose mode
selftests/xsk: add timeout for Tx thread
selftests/xsk: add option to only run tests in a single mode
selftests/xsk: move all tests to separate functions
selftests/xsk: declare test names in struct
selftests/xsk: add option that lists all tests
selftests/xsk: add option to run single test
selftests/xsk: use ksft_print_msg uniformly
selftests/xsk: fail single test instead of all tests
selftests/xsk: display command line options with -h
Martin KaFai Lau (1):
Merge branch 'bpf: expose information about netdev xdp-metadata kfunc support'
Oleg Nesterov (5):
bpf: task_group_seq_get_next: cleanup the usage of next_thread()
bpf: task_group_seq_get_next: cleanup the usage of get/put_task_struct
bpf: task_group_seq_get_next: fix the skip_if_dup_files check
bpf: task_group_seq_get_next: kill next_task
bpf: task_group_seq_get_next: simplify the "next tid" logic
Puranjay Mohan (9):
arm32, bpf: add support for 32-bit offset jmp instruction
arm32, bpf: add support for sign-extension load instruction
arm32, bpf: add support for sign-extension mov instruction
arm32, bpf: add support for unconditional bswap instruction
arm32, bpf: add support for 32-bit signed division
arm32, bpf: add support for 64 bit division instruction
selftest, bpf: enable cpu v4 tests for arm32
bpf/tests: add tests for cpuv4 instructions
MAINTAINERS: Add myself for ARM32 BPF JIT maintainer.
Quan Tian (1):
docs/bpf: update out-of-date doc in BPF flow dissector
Rong Tao (2):
selftests/bpf: trace_helpers.c: Optimize kallsyms cache
selftests/bpf: trace_helpers.c: Add a global ksyms initialization mutex
Song Liu (1):
bpf: Charge modmem for struct_ops trampoline
Stanislav Fomichev (3):
bpf: make it easier to add new metadata kfunc
bpf: expose information about supported xdp metadata kfunc
tools: ynl: extend netdev sample to dump xdp-rx-metadata-features
Tirthendu Sarkar (1):
xsk: add multi-buffer support for sockets sharing umem
Yonghong Song (13):
bpf: Add support for non-fix-size percpu mem allocation
bpf: Add BPF_KPTR_PERCPU as a field type
bpf: Add alloc/xchg/direct_access support for local percpu kptr
bpf: Add bpf_this_cpu_ptr/bpf_per_cpu_ptr support for allocated percpu obj
selftests/bpf: Update error message in negative linked_list test
libbpf: Add __percpu_kptr macro definition
selftests/bpf: Add bpf_percpu_obj_{new,drop}() macro in bpf_experimental.h
selftests/bpf: Add tests for array map with local percpu kptr
bpf: Mark OBJ_RELEASE argument as MEM_RCU when possible
selftests/bpf: Remove unnecessary direct read of local percpu kptr
selftests/bpf: Add tests for cgrp_local_storage with local percpu kptr
selftests/bpf: Add some negative tests
bpf: Mark BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE deprecated
Documentation/bpf/prog_flow_dissector.rst | 2 +-
Documentation/netlink/specs/netdev.yaml | 21 +
Documentation/networking/xdp-rx-metadata.rst | 7 +
MAINTAINERS | 5 +-
arch/arm/net/bpf_jit_32.c | 280 ++++++++-
arch/arm/net/bpf_jit_32.h | 4 +
arch/arm64/net/bpf_jit_comp.c | 2 +-
arch/s390/net/bpf_jit_comp.c | 2 +-
arch/x86/net/bpf_jit_comp.c | 149 ++++-
include/linux/bpf.h | 40 +-
include/linux/bpf_verifier.h | 9 +-
include/linux/filter.h | 58 +-
include/linux/kasan.h | 2 +
include/net/xdp.h | 19 +-
include/net/xdp_sock.h | 2 +
include/uapi/linux/bpf.h | 9 +-
include/uapi/linux/netdev.h | 16 +
kernel/bpf/bpf_struct_ops.c | 26 +-
kernel/bpf/btf.c | 34 +-
kernel/bpf/core.c | 37 +-
kernel/bpf/helpers.c | 61 ++
kernel/bpf/memalloc.c | 30 +-
kernel/bpf/offload.c | 18 +-
kernel/bpf/syscall.c | 6 +-
kernel/bpf/task_iter.c | 40 +-
kernel/bpf/trampoline.c | 4 +-
kernel/bpf/verifier.c | 645 ++++++++++++++++++---
lib/test_bpf.c | 371 ++++++++++++
mm/kasan/kasan.h | 1 -
net/core/netdev-genl.c | 12 +-
net/core/xdp.c | 4 +-
net/xdp/xsk.c | 2 +-
net/xdp/xsk_buff_pool.c | 3 +
samples/bpf/Makefile | 4 +
tools/bpf/bpftool/gen.c | 2 +-
tools/include/uapi/linux/bpf.h | 9 +-
tools/include/uapi/linux/netdev.h | 16 +
tools/lib/bpf/bpf_helpers.h | 1 +
tools/lib/bpf/btf.c | 160 +++++
tools/lib/bpf/libbpf.c | 166 +++++-
tools/net/ynl/generated/netdev-user.c | 19 +
tools/net/ynl/generated/netdev-user.h | 3 +
tools/net/ynl/samples/Makefile | 2 +-
tools/net/ynl/samples/netdev.c | 8 +-
tools/testing/selftests/bpf/DENYLIST.aarch64 | 1 +
tools/testing/selftests/bpf/DENYLIST.s390x | 1 +
tools/testing/selftests/bpf/bpf_experimental.h | 319 ++++++++++
tools/testing/selftests/bpf/prog_tests/btf.c | 4 +-
.../testing/selftests/bpf/prog_tests/exceptions.c | 408 +++++++++++++
.../selftests/bpf/prog_tests/fill_link_info.c | 2 +-
.../bpf/prog_tests/kprobe_multi_testmod_test.c | 20 +-
.../testing/selftests/bpf/prog_tests/libbpf_str.c | 6 +-
.../testing/selftests/bpf/prog_tests/linked_list.c | 4 +-
.../bpf/prog_tests/module_fentry_shadow.c | 5 +
.../selftests/bpf/prog_tests/percpu_alloc.c | 125 ++++
.../selftests/bpf/prog_tests/preempted_bpf_ma_op.c | 89 +++
tools/testing/selftests/bpf/prog_tests/tailcalls.c | 269 ++++++++-
tools/testing/selftests/bpf/progs/exceptions.c | 368 ++++++++++++
.../selftests/bpf/progs/exceptions_assert.c | 135 +++++
tools/testing/selftests/bpf/progs/exceptions_ext.c | 72 +++
.../testing/selftests/bpf/progs/exceptions_fail.c | 347 +++++++++++
.../selftests/bpf/progs/percpu_alloc_array.c | 183 ++++++
.../bpf/progs/percpu_alloc_cgrp_local_storage.c | 105 ++++
.../selftests/bpf/progs/percpu_alloc_fail.c | 164 ++++++
.../selftests/bpf/progs/preempted_bpf_ma_op.c | 106 ++++
.../selftests/bpf/progs/tailcall_bpf2bpf_fentry.c | 18 +
.../selftests/bpf/progs/tailcall_bpf2bpf_fexit.c | 18 +
tools/testing/selftests/bpf/progs/verifier_bswap.c | 3 +-
tools/testing/selftests/bpf/progs/verifier_gotol.c | 3 +-
tools/testing/selftests/bpf/progs/verifier_ldsx.c | 3 +-
tools/testing/selftests/bpf/progs/verifier_movsx.c | 3 +-
tools/testing/selftests/bpf/progs/verifier_sdiv.c | 3 +-
.../selftests/bpf/test_bpftool_synctypes.py | 9 +
tools/testing/selftests/bpf/test_xsk.sh | 40 +-
tools/testing/selftests/bpf/trace_helpers.c | 134 +++--
tools/testing/selftests/bpf/trace_helpers.h | 8 +-
tools/testing/selftests/bpf/xsk_prereqs.sh | 10 +-
tools/testing/selftests/bpf/xskxceiver.c | 535 ++++++++++-------
tools/testing/selftests/bpf/xskxceiver.h | 44 +-
79 files changed, 5275 insertions(+), 600 deletions(-)
create mode 100644 tools/testing/selftests/bpf/prog_tests/exceptions.c
create mode 100644 tools/testing/selftests/bpf/prog_tests/percpu_alloc.c
create mode 100644 tools/testing/selftests/bpf/prog_tests/preempted_bpf_ma_op.c
create mode 100644 tools/testing/selftests/bpf/progs/exceptions.c
create mode 100644 tools/testing/selftests/bpf/progs/exceptions_assert.c
create mode 100644 tools/testing/selftests/bpf/progs/exceptions_ext.c
create mode 100644 tools/testing/selftests/bpf/progs/exceptions_fail.c
create mode 100644 tools/testing/selftests/bpf/progs/percpu_alloc_array.c
create mode 100644 tools/testing/selftests/bpf/progs/percpu_alloc_cgrp_local_storage.c
create mode 100644 tools/testing/selftests/bpf/progs/percpu_alloc_fail.c
create mode 100644 tools/testing/selftests/bpf/progs/preempted_bpf_ma_op.c
create mode 100644 tools/testing/selftests/bpf/progs/tailcall_bpf2bpf_fentry.c
create mode 100644 tools/testing/selftests/bpf/progs/tailcall_bpf2bpf_fexit.c
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