Matt Redfearn 4589f450fb genirq: Dont allow affinity mask to be updated on IPIs ... The IPI domain re-purposes the IRQ affinity to signify the mask of CPUs that this IPI will deliver to. This must not be modified before the IPI is destroyed again, so set the IRQ_NO_BALANCING flag to prevent the affinity being overwritten by setup_affinity(). Without this, if an IPI is reserved for a single target CPU, then allocated using __setup_irq(), the affinity is overwritten with cpu_online_mask. When ipi_destroy() is subsequently called on a multi-cpu system, it will attempt to free cpumask_weight() IRQs that were never allocated, and crash. Fixes: d17bf24e69 ("genirq: Add a new generic IPI reservation code to irq core") Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com> Cc: linux-mips@linux-mips.org Cc: jason@lakedaemon.net Cc: marc.zyngier@arm.com Cc: ralf@linux-mips.org Cc: Qais Yousef <qsyousef@gmail.com> Cc: lisa.parratt@imgtec.com Link: http://lkml.kernel.org/r/1461229712-13057-1-git-send-email-matt.redfearn@imgtec.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2016-04-21 12:05:15 +02:00
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autoprobe.c
chip.c	genirq: Export IRQ functions for module use	2016-03-10 16:00:35 +01:00
cpuhotplug.c
debug.h
devres.c
dummychip.c
generic-chip.c
handle.c	genirq: Use a common macro to go through the actions list	2016-02-15 00:07:34 +01:00
internals.h	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-03-15 12:48:48 -07:00
ipi.c	genirq: Dont allow affinity mask to be updated on IPIs	2016-04-21 12:05:15 +02:00
irqdesc.c	genirq: Add default affinity mask command line option	2016-02-08 15:03:42 +01:00
irqdomain.c	genirq: Export IRQ functions for module use	2016-03-10 16:00:35 +01:00
Kconfig	genirq: Add GENERIC_IRQ_IPI Kconfig symbol	2016-02-25 10:56:55 +01:00
Makefile	genirq: Add a new generic IPI reservation code to irq core	2016-02-25 10:56:56 +01:00
manage.c	kernel/...: convert pr_warning to pr_warn	2016-03-22 15:36:02 -07:00
migration.c
msi.c
pm.c
proc.c	genirq: Use a common macro to go through the actions list	2016-02-15 00:07:34 +01:00
resend.c
settings.h
spurious.c	genirq: Use a common macro to go through the actions list	2016-02-15 00:07:34 +01:00