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fc590c22f9
linux/kernel/irq
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Thomas Gleixner fc590c22f9 genirq: Robustify handle_percpu_devid_irq() 
The percpu_devid handler is not robust against spurious interrupts. If a
spurious interrupt happens and no action is installed then the handler
crashes with a NULL pointer dereference.

Add a sanity check for this and log the wreckage once in dmesg.

Reported-by: Majun <majun258@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: guohanjun@huawei.com
Cc: dingtianhong@huawei.com
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1609021436160.5647@nanos
2016-09-02 18:06:49 +02:00
..
affinity.c genirq: Add a helper to spread an affinity mask for MSI/MSI-X vectors 2016-07-04 12:25:14 +02:00
autoprobe.c
chip.c genirq: Robustify handle_percpu_devid_irq() 2016-09-02 18:06:49 +02:00
cpuhotplug.c genirq: Make the cpuhotplug migration code less noisy 2015-10-22 14:34:57 +02:00
debug.h irq: hide debug macros so they don't collide with others. 2012-04-23 12:30:03 -04:00
devres.c genirq: devres: Fix testing return value of request_any_context_irq() 2015-05-13 10:47:37 +02:00
dummychip.c Merge branch 'linus' into irq/core 2015-06-05 22:25:01 +02:00
generic-chip.c genirq: Add chip_[suspend|resume] PM support to irq_chip 2015-07-27 08:09:38 +02:00
handle.c genirq: Add untracked irq handler 2016-06-18 10:00:55 +02:00
internals.h Merge branch 'irq/for-block' into irq/core 2016-07-04 12:26:05 +02:00
ipi.c genirq: Fix missing irq allocation affinity hint 2016-07-19 10:49:47 +02:00
irqdesc.c genirq: Use affinity hint in irqdesc allocation 2016-07-04 12:25:13 +02:00
irqdomain.c irqdomain: Fix irq_domain_alloc_irqs_recursive() error handling 2016-07-11 17:23:48 +02:00
Kconfig genirq: Add GENERIC_IRQ_IPI Kconfig symbol 2016-02-25 10:56:55 +01:00
Makefile genirq: Add a helper to spread an affinity mask for MSI/MSI-X vectors 2016-07-04 12:25:14 +02:00
manage.c Merge branch 'irq/for-block' into irq/core 2016-07-04 12:26:05 +02:00
migration.c genirq: Remove bogus restriction in irq_move_mask_irq() 2015-06-20 19:05:14 +02:00
msi.c genirq/msi: Fix broken debug output 2016-07-04 15:32:25 +02:00
pm.c Merge branches 'irq-urgent-for-linus' and 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-11-15 09:30:48 -08:00
proc.c Merge branch 'irq/for-block' into irq/core 2016-07-04 12:26:05 +02:00
resend.c genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
settings.h genirq: Add flag to force mask in disable_irq[_nosync]() 2015-10-11 11:33:42 +02:00
spurious.c genirq: Use a common macro to go through the actions list 2016-02-15 00:07:34 +01:00