Merge tag 'v6.18' into next

Sync up with the mainline to bring in the latest APIs.

Merge remote-tracking branch 'drm/drm-next' into msm-next-robclark

Back-merge drm-next to get caught up.

Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>

Merge drm/drm-next into drm-xe-next

Backmerging to bring in 6.18-rc1.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>

Merge drm/drm-next into drm-intel-next

Sync to v6.18-rc1.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Merge drm/drm-next into drm-misc-next

Updating drm-misc-next to the state of v6.18-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge branch 'objtool/core'

Bring in the UDB and objtool data annotations to avoid conflicts while further extending the bug exceptions.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>

Merge tag 'v6.18-rc6' into for-linus

Sync up with the mainline to bring in definition of
INPUT_PROP_HAPTIC_TOUCHPAD.

spi: Merge up v6.18-rc1

Ensure my CI has a sensible baseline.

Merge tag 'asoc-fix-v6.18-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v6.18

A moderately large collection of driver specific fixes, plus a f

Merge tag 'asoc-fix-v6.18-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v6.18

A moderately large collection of driver specific fixes, plus a few new
quirks and device IDs. The NAU8821 changes are a little large but more
in mechanical ways than in ways that are complex.

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Merge drm/drm-fixes into drm-misc-fixes

Updating drm-misc-fixes to the state of v6.18-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge tag 'bpf-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf updates from Alexei Starovoitov:

- Support pulling non-linear xdp data with bpf_xdp_pull_data() kfu

Merge tag 'bpf-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf updates from Alexei Starovoitov:

- Support pulling non-linear xdp data with bpf_xdp_pull_data() kfunc
(Amery Hung)

Applied as a stable branch in bpf-next and net-next trees.

- Support reading skb metadata via bpf_dynptr (Jakub Sitnicki)

Also a stable branch in bpf-next and net-next trees.

- Enforce expected_attach_type for tailcall compatibility (Daniel
Borkmann)

- Replace path-sensitive with path-insensitive live stack analysis in
the verifier (Eduard Zingerman)

This is a significant change in the verification logic. More details,
motivation, long term plans are in the cover letter/merge commit.

- Support signed BPF programs (KP Singh)

This is another major feature that took years to materialize.

Algorithm details are in the cover letter/marge commit

- Add support for may_goto instruction to s390 JIT (Ilya Leoshkevich)

- Add support for may_goto instruction to arm64 JIT (Puranjay Mohan)

- Fix USDT SIB argument handling in libbpf (Jiawei Zhao)

- Allow uprobe-bpf program to change context registers (Jiri Olsa)

- Support signed loads from BPF arena (Kumar Kartikeya Dwivedi and
Puranjay Mohan)

- Allow access to union arguments in tracing programs (Leon Hwang)

- Optimize rcu_read_lock() + migrate_disable() combination where it's
used in BPF subsystem (Menglong Dong)

- Introduce bpf_task_work_schedule*() kfuncs to schedule deferred
execution of BPF callback in the context of a specific task using the
kernel’s task_work infrastructure (Mykyta Yatsenko)

- Enforce RCU protection for KF_RCU_PROTECTED kfuncs (Kumar Kartikeya
Dwivedi)

- Add stress test for rqspinlock in NMI (Kumar Kartikeya Dwivedi)

- Improve the precision of tnum multiplier verifier operation
(Nandakumar Edamana)

- Use tnums to improve is_branch_taken() logic (Paul Chaignon)

- Add support for atomic operations in arena in riscv JIT (Pu Lehui)

- Report arena faults to BPF error stream (Puranjay Mohan)

- Search for tracefs at /sys/kernel/tracing first in bpftool (Quentin
Monnet)

- Add bpf_strcasecmp() kfunc (Rong Tao)

- Support lookup_and_delete_elem command in BPF_MAP_STACK_TRACE (Tao
Chen)

* tag 'bpf-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (197 commits)
libbpf: Replace AF_ALG with open coded SHA-256
selftests/bpf: Add stress test for rqspinlock in NMI
selftests/bpf: Add test case for different expected_attach_type
bpf: Enforce expected_attach_type for tailcall compatibility
bpftool: Remove duplicate string.h header
bpf: Remove duplicate crypto/sha2.h header
libbpf: Fix error when st-prefix_ops and ops from differ btf
selftests/bpf: Test changing packet data from kfunc
selftests/bpf: Add stacktrace map lookup_and_delete_elem test case
selftests/bpf: Refactor stacktrace_map case with skeleton
bpf: Add lookup_and_delete_elem for BPF_MAP_STACK_TRACE
selftests/bpf: Fix flaky bpf_cookie selftest
selftests/bpf: Test changing packet data from global functions with a kfunc
bpf: Emit struct bpf_xdp_sock type in vmlinux BTF
selftests/bpf: Task_work selftest cleanup fixes
MAINTAINERS: Delete inactive maintainers from AF_XDP
bpf: Mark kfuncs as __noclone
selftests/bpf: Add kprobe multi write ctx attach test
selftests/bpf: Add kprobe write ctx attach test
selftests/bpf: Add uprobe context ip register change test
...

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selftests/bpf: Fix arena_spin_lock selftest failure

For systems having CONFIG_NR_CPUS set to > 1024 in kernel config
the selftest fails as arena_spin_lock_irqsave() returns EOPNOTSUPP.
(eg - incase

selftests/bpf: Fix arena_spin_lock selftest failure

For systems having CONFIG_NR_CPUS set to > 1024 in kernel config
the selftest fails as arena_spin_lock_irqsave() returns EOPNOTSUPP.
(eg - incase of powerpc default value for CONFIG_NR_CPUS is 8192)

The selftest is skipped incase bpf program returns EOPNOTSUPP,
with a descriptive message logged.

Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Signed-off-by: Saket Kumar Bhaskar <skb99@linux.ibm.com>
Link: https://lore.kernel.org/r/20250913091337.1841916-1-skb99@linux.ibm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Merge drm/drm-next into drm-intel-gt-next

Need to pull in a67221b5eb8d ("drm/i915/dp: Return min bpc supported by source instead of 0")
in order to fix build breakage on GCC 9.4.0 (from Ubuntu 20.04

Merge drm/drm-next into drm-intel-gt-next

Need to pull in a67221b5eb8d ("drm/i915/dp: Return min bpc supported by source instead of 0")
in order to fix build breakage on GCC 9.4.0 (from Ubuntu 20.04).

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

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Merge drm/drm-next into drm-intel-next

Backmerge to sync with v6.15-rc, xe, and specifically async flip changes
in drm-misc.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Merge branch 'next' into for-linus

Prepare input updates for 6.16 merge window.

Merge tag 'v6.15-rc6' into next

Sync up with mainline to bring in xpad controller changes.

Merge remote-tracking branch 'drm-misc/drm-misc-next' into msm-next

Merge drm-misc-next to get commit Fixes: fec450ca15af ("drm/display:
hdmi: provide central data authority for ACR params").

Signe

Merge remote-tracking branch 'drm-misc/drm-misc-next' into msm-next

Merge drm-misc-next to get commit Fixes: fec450ca15af ("drm/display:
hdmi: provide central data authority for ACR params").

Signed-off-by: Rob Clark <robdclark@chromium.org>

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Merge drm/drm-next into drm-xe-next

Backmerge to bring in linux 6.15-rc.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>

Merge drm/drm-next into drm-misc-next

Backmerging to get v6.15-rc1 into drm-misc-next. Also fixes a
build issue when enabling CONFIG_DRM_SCHED_KUNIT_TEST.

Signed-off-by: Thomas Zimmermann <tzimmerm

Merge drm/drm-next into drm-misc-next

Backmerging to get v6.15-rc1 into drm-misc-next. Also fixes a
build issue when enabling CONFIG_DRM_SCHED_KUNIT_TEST.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

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Merge tag 'v6.15-rc1' into x86/cpu, to refresh the branch with upstream changes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge tag 'v6.15-rc1' into x86/asm, to refresh the branch

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge drm/drm-fixes into drm-misc-fixes

Backmerging to get updates from v6.15-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge tag 'bpf-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf updates from Alexei Starovoitov:
"For this merge window we're splitting BPF pull request into three

Merge tag 'bpf-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf updates from Alexei Starovoitov:
"For this merge window we're splitting BPF pull request into three for
higher visibility: main changes, res_spin_lock, try_alloc_pages.

These are the main BPF changes:

- Add DFA-based live registers analysis to improve verification of
programs with loops (Eduard Zingerman)

- Introduce load_acquire and store_release BPF instructions and add
x86, arm64 JIT support (Peilin Ye)

- Fix loop detection logic in the verifier (Eduard Zingerman)

- Drop unnecesary lock in bpf_map_inc_not_zero() (Eric Dumazet)

- Add kfunc for populating cpumask bits (Emil Tsalapatis)

- Convert various shell based tests to selftests/bpf/test_progs
format (Bastien Curutchet)

- Allow passing referenced kptrs into struct_ops callbacks (Amery
Hung)

- Add a flag to LSM bpf hook to facilitate bpf program signing
(Blaise Boscaccy)

- Track arena arguments in kfuncs (Ihor Solodrai)

- Add copy_remote_vm_str() helper for reading strings from remote VM
and bpf_copy_from_user_task_str() kfunc (Jordan Rome)

- Add support for timed may_goto instruction (Kumar Kartikeya
Dwivedi)

- Allow bpf_get_netns_cookie() int cgroup_skb programs (Mahe Tardy)

- Reduce bpf_cgrp_storage_busy false positives when accessing cgroup
local storage (Martin KaFai Lau)

- Introduce bpf_dynptr_copy() kfunc (Mykyta Yatsenko)

- Allow retrieving BTF data with BTF token (Mykyta Yatsenko)

- Add BPF kfuncs to set and get xattrs with 'security.bpf.' prefix
(Song Liu)

- Reject attaching programs to noreturn functions (Yafang Shao)

- Introduce pre-order traversal of cgroup bpf programs (Yonghong
Song)"

* tag 'bpf-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (186 commits)
selftests/bpf: Add selftests for load-acquire/store-release when register number is invalid
bpf: Fix out-of-bounds read in check_atomic_load/store()
libbpf: Add namespace for errstr making it libbpf_errstr
bpf: Add struct_ops context information to struct bpf_prog_aux
selftests/bpf: Sanitize pointer prior fclose()
selftests/bpf: Migrate test_xdp_vlan.sh into test_progs
selftests/bpf: test_xdp_vlan: Rename BPF sections
bpf: clarify a misleading verifier error message
selftests/bpf: Add selftest for attaching fexit to __noreturn functions
bpf: Reject attaching fexit/fmod_ret to __noreturn functions
bpf: Only fails the busy counter check in bpf_cgrp_storage_get if it creates storage
bpf: Make perf_event_read_output accessible in all program types.
bpftool: Using the right format specifiers
bpftool: Add -Wformat-signedness flag to detect format errors
selftests/bpf: Test freplace from user namespace
libbpf: Pass BPF token from find_prog_btf_id to BPF_BTF_GET_FD_BY_ID
bpf: Return prog btf_id without capable check
bpf: BPF token support for BPF_BTF_GET_FD_BY_ID
bpf, x86: Fix objtool warning for timed may_goto
bpf: Check map->record at the beginning of check_and_free_fields()
...

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Merge branch 'arena-spin-lock'

Kumar Kartikeya Dwivedi says:

====================
Arena Spin Lock

This set provides an implementation of queued spin lock for arena.
There is no support for resilie

Merge branch 'arena-spin-lock'

Kumar Kartikeya Dwivedi says:

====================
Arena Spin Lock

This set provides an implementation of queued spin lock for arena.
There is no support for resiliency and recovering from deadlocks yet.
We will wait for the rqspinlock patch set to land before incorporating
support.

One minor change compared to the qspinlock algorithm in the kernel is
that we don't have the trylock fallback when nesting count exceeds 4.
The maximum number of supported CPUs is 1024, but this can be increased
in the future if necessary.

The API supports returning an error, so resiliency support can be added
in the future. Callers are still expected to check for and handle any
potential errors.

Errors are returned when the spin loops time out, when the number of
CPUs is greater than 1024, or when the extreme edge case of NMI
interrupting NMI interrupting HardIRQ interrupting SoftIRQ interrupting
task, all of them simultaneously in slow path, occurs, which is
unsupported.

Changelog:
----------
v4 -> v5
v4: https://lore.kernel.org/bpf/20250305045136.2614132-1-memxor@gmail.com

* Add better comment and document LLVM bug for __unqual_typeof.
* Switch to precise counting in the selftest and simplify test.
* Add comment about return value handling.
* Reduce size for 100k to 50k to cap test runtime.

v3 -> v4
v3: https://lore.kernel.org/bpf/20250305011849.1168917-1-memxor@gmail.com

* Drop extra corruption handling case in decode_tail.
* Stick to 1, 1k, 100k critical section sizes.
* Fix unqual_typeof to not cast away arena tag for pointers.
* Remove hack to skip first qnode.
* Choose 100 as repeat count, 1000 is too much for 100k size.
* Use pthread_barrier in test.

v2 -> v3
v2: https://lore.kernel.org/bpf/20250118162238.2621311-1-memxor@gmail.com

* Rename to arena_spin_lock
* Introduce cond_break_label macro to jump to label from cond_break.
* Drop trylock fallback when nesting count exceeds 4.
* Fix bug in try_cmpxchg implementation.
* Add tests with critical sections of varying lengths.
* Add comments for _Generic trick to drop __arena tag.
* Fix bug due to qnodes being placed on first page, leading to CPU 0's
node being indistinguishable from NULL.

v1 -> v2
v1: https://lore.kernel.org/bpf/20250117223754.1020174-1-memxor@gmail.com

* Fix definition of lock in selftest
====================

Link: https://patch.msgid.link/20250306035431.2186189-1-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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selftests/bpf: Add tests for arena spin lock

Add some basic selftests for qspinlock built over BPF arena using
cond_break_label macro.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link

selftests/bpf: Add tests for arena spin lock

Add some basic selftests for qspinlock built over BPF arena using
cond_break_label macro.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250306035431.2186189-4-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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