David Vrabel 77bb3dfdc0 xen/events: don't bind non-percpu VIRQs with percpu chip ... A non-percpu VIRQ (e.g., VIRQ_CONSOLE) may be freed on a different VCPU than it is bound to. This can result in a race between handle_percpu_irq() and removing the action in __free_irq() because handle_percpu_irq() does not take desc->lock. The interrupt handler sees a NULL action and oopses. Only use the percpu chip/handler for per-CPU VIRQs (like VIRQ_TIMER). # cat /proc/interrupts | grep virq 40: 87246 0 xen-percpu-virq timer0 44: 0 0 xen-percpu-virq debug0 47: 0 20995 xen-percpu-virq timer1 51: 0 0 xen-percpu-virq debug1 69: 0 0 xen-dyn-virq xen-pcpu 74: 0 0 xen-dyn-virq mce 75: 29 0 xen-dyn-virq hvc_console Signed-off-by: David Vrabel <david.vrabel@citrix.com> Cc: <stable@vger.kernel.org>		2015-05-19 19:55:36 +01:00
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events_2l.c	xen/events: Clear cpu_evtchn_mask before resuming	2015-05-05 18:27:11 +01:00
events_base.c	xen/events: don't bind non-percpu VIRQs with percpu chip	2015-05-19 19:55:36 +01:00
events_fifo.c
events_internal.h
Makefile