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60b09c51bb
linux/kernel/irq
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Thomas Gleixner 60b09c51bb genirq/cpuhotplug: Add sanity check for effective affinity mask 
The effective affinity mask handling has no safety net when the mask is not
updated by the interrupt chip or the mask contains offline CPUs.

If that happens the CPU unplug code fails to migrate interrupts.

Add sanity checks and emit a warning when the mask contains only offline
CPUs.

Fixes: 415fcf1a22 ("genirq/cpuhotplug: Use effective affinity mask")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1710042208400.2406@nanos
2017-10-09 13:26:48 +02:00
..
affinity.c pci-v4.13-changes 2017-07-08 15:51:57 -07:00
autoprobe.c genirq: Add force argument to irq_startup() 2017-06-22 18:21:24 +02:00
chip.c genirq: Fix cpumask check in __irq_startup_managed() 2017-09-16 20:20:56 +02:00
cpuhotplug.c genirq/cpuhotplug: Add sanity check for effective affinity mask 2017-10-09 13:26:48 +02:00
debug.h irq: hide debug macros so they don't collide with others. 2012-04-23 12:30:03 -04:00
debugfs.c genirq/debugfs: Triggering of interrupts from userspace 2017-08-18 10:36:24 +02:00
devres.c irq/generic-chip: Provide devm_irq_setup_generic_chip() 2017-06-21 15:53:11 +02:00
dummychip.c Merge branch 'linus' into irq/core 2015-06-05 22:25:01 +02:00
generic-chip.c irq/generic-chip: Don't replace domain's name 2017-09-28 12:18:59 +02:00
handle.c There has been a fair amount of activity in the docs tree this time 2017-07-03 21:13:25 -07:00
internals.h genirq: Fix for_each_action_of_desc() macro 2017-08-14 12:10:37 +02:00
ipi.c genirq/ipi: Fixup checks against nr_cpu_ids 2017-08-20 10:49:05 +02:00
irq_sim.c genirq/irq_sim: Add a devres variant of irq_sim_init() 2017-08-16 16:40:02 +02:00
irqdesc.c genirq: Make sparse_irq_lock protect what it should protect 2017-09-07 09:30:38 +02:00
irqdomain.c irqdomain: Add __rcu annotations to radix tree accessors 2017-09-25 21:23:44 +02:00
Kconfig genirq: Add handle_fasteoi_{level,edge}_irq flow handlers 2017-08-18 11:21:41 +02:00
Makefile genirq/irq_sim: Add a simple interrupt simulator framework 2017-08-16 16:40:02 +02:00
manage.c genirq: Warn when effective affinity is not updated 2017-10-09 13:26:48 +02:00
migration.c genirq: Provide irq_fixup_move_pending() 2017-06-22 18:21:13 +02:00
msi.c genirq/msi: Fix populating multiple interrupts 2017-09-06 11:41:20 +02:00
pm.c genirq/PM: Properly pretend disabled state when force resuming interrupts 2017-07-17 22:32:20 +02:00
proc.c genirq/proc: Avoid uninitalized variable warning 2017-08-25 22:40:26 +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: Clarify logic calculating bogus irqreturn_t values 2017-02-16 15:32:19 +01:00
timings.c genirq/timings: Add infrastructure for estimating the next interrupt arrival time 2017-06-24 11:44:39 +02:00