Johan Hovold 4ab311d51c irqdomain: Fix mapping-creation race ...

[ Upstream commit 601363cc08da25747feb87c55573dd54de91d66a ]

Parallel probing of devices that share interrupts (e.g. when a driver
uses asynchronous probing) can currently result in two mappings for the
same hardware interrupt to be created due to missing serialisation.

Make sure to hold the irq_domain_mutex when creating mappings so that
looking for an existing mapping before creating a new one is done
atomically.

Fixes: 765230b5f0 ("driver-core: add asynchronous probing support for drivers")
Fixes: b62b2cf575 ("irqdomain: Fix handling of type settings for existing mappings")
Link: https://lore.kernel.org/r/YuJXMHoT4ijUxnRb@hovoldconsulting.com
Cc: stable@vger.kernel.org      # 4.8
Cc: Dmitry Torokhov <dtor@chromium.org>
Cc: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Hsin-Yi Wang <hsinyi@chromium.org>
Tested-by: Mark-PK Tsai <mark-pk.tsai@mediatek.com>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230213104302.17307-7-johan+linaro@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-03-17 08:45:07 +01:00

..

affinity.c

genirq/affinity: Consider that CPUs on nodes can be unbalanced

2022-04-20 09:23:29 +02:00

autoprobe.c

genirq: Delay deactivation in free_irq()

2019-07-03 10:12:28 +02:00

chip.c

irq: Fix typos in comments

2023-03-17 08:45:07 +01:00

cpuhotplug.c

genirq, sched/isolation: Isolate from handling managed interrupts

2020-01-22 16:29:49 +01:00

debug.h

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk

2018-02-01 13:36:15 -08:00

debugfs.c

Merge branch 'irq/qcom-pdc-wakeup' into irq/irqchip-next

2020-10-06 11:28:03 +01:00

devres.c

genirq/devres: Use struct_size() in devm_kzalloc()

2019-04-16 21:54:03 +02:00

dummychip.c

irq: Fix typos in comments

2023-03-17 08:45:07 +01:00

generic-chip.c

genirq: Add missing SPDX identifiers

2018-03-20 14:23:28 +01:00

handle.c

random: remove unused irq_flags argument from add_interrupt_randomness()

2022-05-30 09:33:27 +02:00

internals.h

genirq/irqdesc: Don't try to remove non-existing sysfs files

2023-01-14 10:15:18 +01:00

ipi.c

genirq: Fix various typos in comments

2018-12-18 14:22:28 +01:00

irq_sim.c

genirq/irq_sim: Simplify the API

2020-05-18 10:30:21 +01:00

irqdesc.c

irq: Fix typos in comments

2023-03-17 08:45:07 +01:00

irqdomain.c

irqdomain: Fix mapping-creation race

2023-03-17 08:45:07 +01:00

Kconfig

genirq: GENERIC_IRQ_IPI depends on SMP

2022-08-21 15:15:28 +02:00

Makefile

genirq/timings: Add selftest for circular array

2019-06-12 10:47:04 +02:00

manage.c

irq: Fix typos in comments

2023-03-17 08:45:07 +01:00

matrix.c

genirq/matrix: Prevent allocation counter corruption

2021-05-11 14:47:17 +02:00

migration.c

genirq/migration: Avoid out of line call if pending is not set

2018-06-06 15:18:20 +02:00

msi.c

irq: Fix typos in comments

2023-03-17 08:45:07 +01:00

pm.c

genirq/PM: Introduce IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND flag

2020-10-06 11:23:41 +01:00

proc.c

genirq: Allow interrupts to be excluded from /proc/interrupts

2020-09-13 17:04:38 +01:00

resend.c

genirq: Walk the irq_data hierarchy when resending an interrupt

2020-09-06 18:25:23 +01:00

settings.h

genirq: Allow interrupts to be excluded from /proc/interrupts

2020-09-13 17:04:38 +01:00

spurious.c

genirq: Add missing __must_hold() sparse annotation

2020-01-09 18:03:37 +01:00

timings.c

irq: Fix typos in comments

2023-03-17 08:45:07 +01:00