Thomas Gleixner 927aa9a10f genirq/matrix: Deal with the sillyness of for_each_cpu() on UP ... commit 784a083037 upstream. Most of the CPU mask operations behave the same way, but for_each_cpu() and it's variants ignore the cpumask argument and claim that CPU0 is always in the mask. This is historical, inconsistent and annoying behaviour. The matrix allocator uses for_each_cpu() and can be called on UP with an empty cpumask. The calling code does not expect that this succeeds but until commit e027fffff7 ("x86/irq: Unbreak interrupt affinity setting") this went unnoticed. That commit added a WARN_ON() to catch cases which move an interrupt from one vector to another on the same CPU. The warning triggers on UP. Add a check for the cpumask being empty to prevent this. Fixes: 2f75d9e1c9 ("genirq: Implement bitmap matrix allocator") Reported-by: kernel test robot <rong.a.chen@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-09-03 11:27:06 +02:00
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Kconfig	…
Makefile	…
affinity.c	…
autoprobe.c	…
chip.c	…
cpuhotplug.c	…
debug.h	…
debugfs.c	genirq/debugfs: Add missing sanity checks to interrupt injection	2020-04-17 10:50:11 +02:00
devres.c	…
dummychip.c	…
generic-chip.c	…
handle.c	…
internals.h	…
ipi.c	…
irq_sim.c	…
irqdesc.c	…
irqdomain.c	genirq/irqdomain: Check pointer in irq_domain_alloc_irqs_hierarchy()	2020-04-17 10:50:04 +02:00
manage.c	genirq/affinity: Make affinity setting if activated opt-in	2020-08-21 13:05:20 +02:00
matrix.c	genirq/matrix: Deal with the sillyness of for_each_cpu() on UP	2020-09-03 11:27:06 +02:00
migration.c	…
msi.c	…
pm.c	genirq/PM: Always unlock IRQ descriptor in rearm_wake_irq()	2020-08-21 13:05:20 +02:00
proc.c	…
resend.c	…
settings.h	…
spurious.c	…
timings.c	…