Merge tag 'v6.6.66' into for/openbmc/dev-6.6

This is the 6.6.66 stable release

kcsan: Turn report_filterlist_lock into a raw_spinlock

[ Upstream commit 59458fa4ddb47e7891c61b4a928d13d5f5b00aa0 ]

Ran Xiaokai reports that with a KCSAN-enabled PREEMPT_RT kernel, we can see
splat

kcsan: Turn report_filterlist_lock into a raw_spinlock

[ Upstream commit 59458fa4ddb47e7891c61b4a928d13d5f5b00aa0 ]

Ran Xiaokai reports that with a KCSAN-enabled PREEMPT_RT kernel, we can see
splats like:

| BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48
| in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 0, name: swapper/1
| preempt_count: 10002, expected: 0
| RCU nest depth: 0, expected: 0
| no locks held by swapper/1/0.
| irq event stamp: 156674
| hardirqs last enabled at (156673): [<ffffffff81130bd9>] do_idle+0x1f9/0x240
| hardirqs last disabled at (156674): [<ffffffff82254f84>] sysvec_apic_timer_interrupt+0x14/0xc0
| softirqs last enabled at (0): [<ffffffff81099f47>] copy_process+0xfc7/0x4b60
| softirqs last disabled at (0): [<0000000000000000>] 0x0
| Preemption disabled at:
| [<ffffffff814a3e2a>] paint_ptr+0x2a/0x90
| CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.11.0+ #3
| Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-0-ga698c8995f-prebuilt.qemu.org 04/01/2014
| Call Trace:
| <IRQ>
| dump_stack_lvl+0x7e/0xc0
| dump_stack+0x1d/0x30
| __might_resched+0x1a2/0x270
| rt_spin_lock+0x68/0x170
| kcsan_skip_report_debugfs+0x43/0xe0
| print_report+0xb5/0x590
| kcsan_report_known_origin+0x1b1/0x1d0
| kcsan_setup_watchpoint+0x348/0x650
| __tsan_unaligned_write1+0x16d/0x1d0
| hrtimer_interrupt+0x3d6/0x430
| __sysvec_apic_timer_interrupt+0xe8/0x3a0
| sysvec_apic_timer_interrupt+0x97/0xc0
| </IRQ>

On a detected data race, KCSAN's reporting logic checks if it should
filter the report. That list is protected by the report_filterlist_lock
*non-raw* spinlock which may sleep on RT kernels.

Since KCSAN may report data races in any context, convert it to a
raw_spinlock.

This requires being careful about when to allocate memory for the filter
list itself which can be done via KCSAN's debugfs interface. Concurrent
modification of the filter list via debugfs should be rare: the chosen
strategy is to optimistically pre-allocate memory before the critical
section and discard if unused.

Link: https://lore.kernel.org/all/20240925143154.2322926-1-ranxiaokai627@163.com/
Reported-by: Ran Xiaokai <ran.xiaokai@zte.com.cn>
Tested-by: Ran Xiaokai <ran.xiaokai@zte.com.cn>
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

show more ...

Merge branch 'next' into for-linus

Prepare input updates for 5.17 merge window.

Merge branch 'reset/of-get-optional-exclusive' of git://git.pengutronix.de/pza/linux into timers/drivers/next

"Add optional variant of of_reset_control_get_exclusive(). If the
requested reset is not

Merge branch 'reset/of-get-optional-exclusive' of git://git.pengutronix.de/pza/linux into timers/drivers/next

"Add optional variant of of_reset_control_get_exclusive(). If the
requested reset is not specified in the device tree, this function
returns NULL instead of an error."

This dependency is needed for the Generic Timer Module (a.k.a OSTM)
support for RZ/G2L.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

show more ...

Merge tag 'v5.15' into next

Sync up with the mainline to get the latest APIs and DT bindings.

Merge branch 'pruss-fix' into fixes

Merge in a fix for pruss reset issue caused by enabling pruss for am335x.

Merge tag 'v5.15-rc2' into spi-5.15

Linux 5.15-rc2

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

Catch-up on 5.15-rc1 and sync with drm-intel-gt-next
to prepare the PXP topic branch.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

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

Close the divergence which has caused patches not to apply and
have a solid baseline for the PXP patches that Rodrigo will send
a topic branch PR for.

Sign

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

Close the divergence which has caused patches not to apply and
have a solid baseline for the PXP patches that Rodrigo will send
a topic branch PR for.

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

show more ...

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

Kickstart new drm-misc-next cycle.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Merge branch 'next' into for-linus

Prepare input updates for 5.15 merge window.

Merge tag 's390-5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Heiko Carstens:

- Improve ftrace code patching so that stop_machine is not required
an

Merge tag 's390-5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Heiko Carstens:

- Improve ftrace code patching so that stop_machine is not required
anymore. This requires a small common code patch acked by Steven
Rostedt:

https://lore.kernel.org/linux-s390/20210730220741.4da6fdf6@oasis.local.home/

- Enable KCSAN for s390. This comes with a small common code change to
fix a compile warning. Acked by Marco Elver:

https://lore.kernel.org/r/20210729142811.1309391-1-hca@linux.ibm.com

- Add KFENCE support for s390. This also comes with a minimal x86 patch
from Marco Elver who said also this can be carried via the s390 tree:

https://lore.kernel.org/linux-s390/YQJdarx6XSUQ1tFZ@elver.google.com/

- More changes to prepare the decompressor for relocation.

- Enable DAT also for CPU restart path.

- Final set of register asm removal patches; leaving only three
locations where needed and sane.

- Add NNPA, Vector-Packed-Decimal-Enhancement Facility 2, PCI MIO
support to hwcaps flags.

- Cleanup hwcaps implementation.

- Add new instructions to in-kernel disassembler.

- Various QDIO cleanups.

- Add SCLP debug feature.

- Various other cleanups and improvements all over the place.

* tag 's390-5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (105 commits)
s390: remove SCHED_CORE from defconfigs
s390/smp: do not use nodat_stack for secondary CPU start
s390/smp: enable DAT before CPU restart callback is called
s390: update defconfigs
s390/ap: fix state machine hang after failure to enable irq
KVM: s390: generate kvm hypercall functions
s390/sclp: add tracing of SCLP interactions
s390/debug: add early tracing support
s390/debug: fix debug area life cycle
s390/debug: keep debug data on resize
s390/diag: make restart_part2 a local label
s390/mm,pageattr: fix walk_pte_level() early exit
s390: fix typo in linker script
s390: remove do_signal() prototype and do_notify_resume() function
s390/crypto: fix all kernel-doc warnings in vfio_ap_ops.c
s390/pci: improve DMA translation init and exit
s390/pci: simplify CLP List PCI handling
s390/pci: handle FH state mismatch only on disable
s390/pci: fix misleading rc in clp_set_pci_fn()
s390/boot: factor out offset_vmlinux_info() function
...

show more ...

Merge branch 'perf/urgent' into perf/core, to pick up fixes

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

Merge tag 'v5.14-rc6' into locking/core, to pick up fixes

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

kcsan: use u64 instead of cycles_t

cycles_t has a different type across architectures: unsigned int,
unsinged long, or unsigned long long. Depending on architecture this
will generate this warning:

kcsan: use u64 instead of cycles_t

cycles_t has a different type across architectures: unsigned int,
unsinged long, or unsigned long long. Depending on architecture this
will generate this warning:

kernel/kcsan/debugfs.c: In function ‘microbenchmark’:
./include/linux/kern_levels.h:5:25: warning: format ‘%llu’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘cycles_t’ {aka ‘long unsigned int’} [-Wformat=]

To avoid this simply change the type of cycle to u64 in microbenchmark(),
since u64 is of type unsigned long long for all architectures.

Acked-by: Marco Elver <elver@google.com>
Link: https://lore.kernel.org/r/20210729142811.1309391-1-hca@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

show more ...

Merge branch 'fixes-v5.14' into fixes

Merge tag 'v5.13' into next

Sync up with the mainline to get the latest parport API.

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

Bring drm-intel-next closer to drm-next and drm-intel-gt-next for a more
feasible baseline for topic branches.

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

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

Bring drm-intel-next closer to drm-next and drm-intel-gt-next for a more
feasible baseline for topic branches.

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

show more ...

Merge branch 'cpufreq/cppc-fie' into cpufreq/arm/linux-next

Merge tag 'spi-nor/for-5.14' into mtd/next

SPI NOR core changes:
- Ability to dump SFDP tables via sysfs
- Support for erasing OTP regions on Winbond and similar flashes
- Few API doc updates and fi

Merge tag 'spi-nor/for-5.14' into mtd/next

SPI NOR core changes:
- Ability to dump SFDP tables via sysfs
- Support for erasing OTP regions on Winbond and similar flashes
- Few API doc updates and fixes
- Locking support for MX25L12805D

SPI NOR controller drivers changes:
- Use SPI_MODE_X_MASK in nxp-spifi
- Intel Alder Lake-M SPI serial flash support

show more ...

Merge branch 'for-5.14/amd-sfh' into for-linus

- support for Renoir and Cezanne SoCs
- support for Ambient Light Sensor
- support for Human Presence Detection sensor

all from Basavaraj Natikar

Merge tag 'irqchip-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core

Pull irqchip updates from Marc Zyngier:

- Revamped the irqdomain internals to consistently

Merge tag 'irqchip-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core

Pull irqchip updates from Marc Zyngier:

- Revamped the irqdomain internals to consistently cache irqdata

- Expose a new API to simplify IRQ handling involving an irqdomain by
not using the IRQ number

- Convert all the irqchip drivers to this new API

- Allow the Qualcomm PDC driver to be compiled as a module

- Fix HiSi MBIGEN compile warning when CONFIG_ACPI isn't selected

- Remove a bunch of spurious printks on error paths

- The obligatory couple of DT updates

show more ...

Merge tag 'kvmarm-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 updates for v5.14.

- Add MTE support in guests, complete with tag save/restore interface
-

Merge tag 'kvmarm-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 updates for v5.14.

- Add MTE support in guests, complete with tag save/restore interface
- Reduce the impact of CMOs by moving them in the page-table code
- Allow device block mappings at stage-2
- Reduce the footprint of the vmemmap in protected mode
- Support the vGIC on dumb systems such as the Apple M1
- Add selftest infrastructure to support multiple configuration
and apply that to PMU/non-PMU setups
- Add selftests for the debug architecture
- The usual crop of PMU fixes

show more ...

Merge tag 'asoc-fix-v5.13-rc7' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next

ASoC: Fixes for v5.13

A final batch of fixes for v5.13, this is larger than I'd like du

Merge tag 'asoc-fix-v5.13-rc7' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next

ASoC: Fixes for v5.13

A final batch of fixes for v5.13, this is larger than I'd like due to
the fixes for a series of suspend issues that Intel turned up in their
testing this week.

show more ...

Merge x86/urgent into x86/fpu

Pick up dependent changes which either went mainline (x86/urgent is
based on -rc7 and that contains them) as urgent fixes and the current
x86/urgent branch which contai

Merge x86/urgent into x86/fpu

Pick up dependent changes which either went mainline (x86/urgent is
based on -rc7 and that contains them) as urgent fixes and the current
x86/urgent branch which contains two more urgent fixes, so that the
bigger FPU rework can base off ontop.

Signed-off-by: Borislav Petkov <bp@suse.de>

show more ...