Merge tag 'bpf-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf updates from Alexei Starovoitov:

- Convert selftests/bpf/test_tc_edt and test_tc_tunnel from .sh to

Merge tag 'bpf-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf updates from Alexei Starovoitov:

- Convert selftests/bpf/test_tc_edt and test_tc_tunnel from .sh to
test_progs runner (Alexis Lothoré)

- Convert selftests/bpf/test_xsk to test_progs runner (Bastien
Curutchet)

- Replace bpf memory allocator with kmalloc_nolock() in
bpf_local_storage (Amery Hung), and in bpf streams and range tree
(Puranjay Mohan)

- Introduce support for indirect jumps in BPF verifier and x86 JIT
(Anton Protopopov) and arm64 JIT (Puranjay Mohan)

- Remove runqslower bpf tool (Hoyeon Lee)

- Fix corner cases in the verifier to close several syzbot reports
(Eduard Zingerman, KaFai Wan)

- Several improvements in deadlock detection in rqspinlock (Kumar
Kartikeya Dwivedi)

- Implement "jmp" mode for BPF trampoline and corresponding
DYNAMIC_FTRACE_WITH_JMP. It improves "fexit" program type performance
from 80 M/s to 136 M/s. With Steven's Ack. (Menglong Dong)

- Add ability to test non-linear skbs in BPF_PROG_TEST_RUN (Paul
Chaignon)

- Do not let BPF_PROG_TEST_RUN emit invalid GSO types to stack (Daniel
Borkmann)

- Generalize buildid reader into bpf_dynptr (Mykyta Yatsenko)

- Optimize bpf_map_update_elem() for map-in-map types (Ritesh
Oedayrajsingh Varma)

- Introduce overwrite mode for BPF ring buffer (Xu Kuohai)

* tag 'bpf-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (169 commits)
bpf: optimize bpf_map_update_elem() for map-in-map types
bpf: make kprobe_multi_link_prog_run always_inline
selftests/bpf: do not hardcode target rate in test_tc_edt BPF program
selftests/bpf: remove test_tc_edt.sh
selftests/bpf: integrate test_tc_edt into test_progs
selftests/bpf: rename test_tc_edt.bpf.c section to expose program type
selftests/bpf: Add success stats to rqspinlock stress test
rqspinlock: Precede non-head waiter queueing with AA check
rqspinlock: Disable spinning for trylock fallback
rqspinlock: Use trylock fallback when per-CPU rqnode is busy
rqspinlock: Perform AA checks immediately
rqspinlock: Enclose lock/unlock within lock entry acquisitions
bpf: Remove runqslower tool
selftests/bpf: Remove usage of lsm/file_alloc_security in selftest
bpf: Disable file_alloc_security hook
bpf: check for insn arrays in check_ptr_alignment
bpf: force BPF_F_RDONLY_PROG on insn array creation
bpf: Fix exclusive map memory leak
selftests/bpf: Make CS length configurable for rqspinlock stress test
selftests/bpf: Add lock wait time stats to rqspinlock stress test
...

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Merge branch 'bpf-introduce-file-dynptr'

Mykyta Yatsenko says:

====================
bpf: Introduce file dynptr

From: Mykyta Yatsenko <yatsenko@meta.com>

This series adds a new dynptr kind, file d

Merge branch 'bpf-introduce-file-dynptr'

Mykyta Yatsenko says:

====================
bpf: Introduce file dynptr

From: Mykyta Yatsenko <yatsenko@meta.com>

This series adds a new dynptr kind, file dynptr, which enables BPF
programs to perform safe reads from files in a structured way.
Initial motivations include:
* Parsing the executable’s ELF to locate thread-local variable symbols
* Capturing stack traces when frame pointers are disabled

By leveraging the existing dynptr abstraction, we reuse the verifier’s
lifetime/size checks and keep the API consistent with existing dynptr
read helpers.

Technical details:
1. Reuses the existing freader library to read files a folio at a time.
2. bpf_dynptr_slice() and bpf_dynptr_read() always copy data from folios
into a program-provided buffer; zero-copy access is intentionally not
supported to keep it simple.
3. Reads may sleep if the requested folios are not in the page cache.
4. Few verifier changes required:
* Support dynptr destruction in kfuncs
* Add kfunc address substitution based on whether the program runs in
a sleepable or non-sleepable context.

Testing:
The final patch adds a selftest that validates BPF program reads the
same data as userspace, page faults are enabled in sleepable context and
disabled in non-sleepable.

Changelog:
---
v4 -> v5
v4: https://lore.kernel.org/all/20251021200334.220542-1-mykyta.yatsenko5@gmail.com/
* Inlined and removed kfunc_call_imm(), run overflow check for call_imm
only if !bpf_jit_supports_far_kfunc_call().

v3 -> v4
v3: https://lore.kernel.org/bpf/20251020222538.932915-1-mykyta.yatsenko5@gmail.com/
* Remove ringbuf usage from selftests
* bpf_dynptr_set_null(ptr) when discarding file dynptr
* call kfunc_call_imm() in specialize_kfunc() only, removed
call from add_kfunc_call()

v2 -> v3
v2: https://lore.kernel.org/bpf/20251015161155.120148-1-mykyta.yatsenko5@gmail.com/
* Add negative tests
* Rewrote tests to use LSM for bpf_get_task_exe_file()
* Move call_imm overflow check into kfunc_call_imm()

v1 -> v2
v1: https://lore.kernel.org/bpf/20251003160416.585080-1-mykyta.yatsenko5@gmail.com/
* Remove ELF parsing selftest
* Expanded u32 -> u64 refactoring, changes in include/uapi/linux/bpf.h
* Removed freader.{c,h}, instead move freader definitions into
buildid.h.
* Small refactoring of the multiple folios reading algorithm
* Directly return error after unmark_stack_slots_dynptr().
* Make kfuncs receive trusted arguments.
* Remove enum bpf_is_sleepable, use bool instead
* Remove unnecessary sorting from specialize_kfunc()
* Remove bool kfunc_in_sleepable_ctx; field from the struct
bpf_insn_aux_data, rely on non_sleepable field introduced by Kumar
* Refactor selftests, do madvise(...MADV_PAGEOUT) for all pages read by
the test
* Introduce the test for non-sleepable case, verify it fails with -EFAULT
====================

Link: https://lore.kernel.org/r/20251026203853.135105-1-mykyta.yatsenko5@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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selftests/bpf: add file dynptr tests

Introducing selftests for validating file-backed dynptr works as
expected.
* validate implementation supports dynptr slice and read operations
* validate destr

selftests/bpf: add file dynptr tests

Introducing selftests for validating file-backed dynptr works as
expected.
* validate implementation supports dynptr slice and read operations
* validate destructors should be paired with initializers
* validate sleepable progs can page in.

Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Reviewed-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20251026203853.135105-11-mykyta.yatsenko5@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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