David Vrabel 0b80fa4b24 xen/events: don't bind non-percpu VIRQs with percpu chip ... commit 77bb3dfdc0d554befad58fdefbc41be5bc3ed38a upstream. 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> [lizf: Backported to 3.4: adjust filename] Signed-off-by: Zefan Li <lizefan@huawei.com>		2015-09-18 09:20:42 +08:00
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acpi	ACPICA: Utilities: split IO address types from data type models.	2015-09-18 09:20:30 +08:00
asm-generic
crypto
drm	drm/radeon: remove invalid pci id	2015-02-02 17:05:06 +08:00
keys
linux	libata: Ignore spurious PHY event on LPM policy change	2015-09-18 09:20:37 +08:00
math-emu
media
misc
mtd
net	net: sctp: fix skb_over_panic when receiving malformed ASCONF chunks	2015-04-14 17:33:57 +08:00
pcmcia
rdma
rxrpc
scsi	SCSI: add 1024 max sectors black list flag	2015-09-18 09:20:33 +08:00
sound	ALSA: emu10k1: Emu10k2 32 bit DMA mode	2015-09-18 09:20:34 +08:00
target
trace	tracing: Fix syscall_*regfunc() vs copy_process() race	2014-07-06 18:49:20 -07:00
video
xen	xen/events: don't bind non-percpu VIRQs with percpu chip	2015-09-18 09:20:42 +08:00
Kbuild