Johan Hovold 7889dfc194 irqdomain: Fix mapping-creation race ...

[ Upstream commit 601363cc08 ]

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 08:48:58 +01:00

..

affinity.c

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

2022-04-20 09:34:20 +02:00

autoprobe.c

genirq: Delay deactivation in free_irq()

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

chip.c

genirq: Don't return error on missing optional irq_request_resources()

2022-08-17 14:23:00 +02:00

cpuhotplug.c

genirq/cpuhotplug: Demote debug printk to KERN_DEBUG

2021-08-24 09:16:20 +02:00

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

2021-03-22 04:23:14 +01:00

generic-chip.c

genirq/generic_chip: Use struct_size() in kzalloc()

2021-08-10 15:35:20 +02:00

handle.c

random: remove unused irq_flags argument from add_interrupt_randomness()

2022-05-30 09:29:00 +02:00

internals.h

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

2022-12-31 13:14:03 +01:00

ipi.c

genirq: Fix kernel-doc warnings in pm.c, msi.c and ipi.c

2021-08-11 14:33:35 +02:00

irq_sim.c

Merge tag 'irq-core-2021-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2021-04-26 09:43:16 -07:00

irqdesc.c

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

2022-12-31 13:14:03 +01:00

irqdomain.c

irqdomain: Fix mapping-creation race

2023-03-17 08:48:58 +01:00

Kconfig

genirq: GENERIC_IRQ_IPI depends on SMP

2022-08-17 14:23:01 +02:00

Makefile

genirq/timings: Add selftest for circular array

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

manage.c

genirq: Take the proposed affinity at face value if force==true

2022-12-02 17:41:12 +01:00

matrix.c

genirq/matrix: Fix kernel doc warnings for irq_matrix_alloc_managed()

2021-08-10 22:50:07 +02:00

migration.c

genirq: Fix typos and misspellings in comments

2021-03-16 15:08:29 +01:00

msi.c

genirq/msi: Shutdown managed interrupts with unsatifiable affinities

2022-12-02 17:41:11 +01:00

pm.c

genirq: Fix kernel-doc warnings in pm.c, msi.c and ipi.c

2021-08-11 14:33:35 +02:00

proc.c

genirq: Improve "hwirq" output in /proc and /sys/

2021-07-30 23:07:31 +02:00

resend.c

genirq: Fix typos and misspellings in comments

2021-03-16 15:08:29 +01:00

settings.h

genirq: Add a IRQF_NO_DEBUG flag

2021-05-17 20:01:35 +02:00

spurious.c

genirq: Reduce irqdebug cacheline bouncing

2021-04-10 13:35:54 +02:00

timings.c

Merge tag 'irq-core-2021-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2021-08-30 14:38:37 -07:00