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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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accessibility
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acpi
More power management and ACPI updates for v4.1-rc1
2015-04-26 13:56:35 -07:00
amba
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android
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ata
powerpc updates for 4.1
2015-04-16 13:53:32 -05:00
atm
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auxdisplay
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base
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-26 17:22:07 -07:00
bcma
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
2015-04-17 15:50:54 -04:00
block
xen/grant: introduce func gnttab_unmap_refs_sync()
2015-04-27 11:41:12 +01:00
bluetooth
Bluetooth: btusb: Use proper data structures for Intel vendor events
2015-04-09 10:42:18 +03:00
bus
ARM: SoC driver updates for v4.1
2015-04-22 09:18:17 -07:00
cdrom
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char
Char/Misc driver patches for 4.1-rc1
2015-04-21 09:42:58 -07:00
clk
ARM: SoC multiplatform code changes for v4.1
2015-04-22 09:20:15 -07:00
clocksource
Initial ACPI support for arm64:
2015-04-24 08:23:45 -07:00
connector
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cpufreq
cpufreq: intel_pstate: Fix an annoying !CONFIG_SMP warning
2015-04-15 23:02:24 +02:00
cpuidle
ARM: SoC fixes for v4.1
2015-04-22 09:03:30 -07:00
crypto
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2015-04-26 13:51:05 -07:00
dca
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devfreq
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dio
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dma
Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
2015-04-24 09:49:37 -07:00
dma-buf
dma-buf: cleanup dma_buf_export() to make it easily extensible
2015-04-21 14:47:16 +05:30
edac
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eisa
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extcon
Char/Misc driver patches for 4.1-rc1
2015-04-21 09:42:58 -07:00
firewire
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firmware
ARM: SoC driver updates for v4.1
2015-04-22 09:18:17 -07:00
fmc
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gpio
ARM: SoC cleanups for v4.1
2015-04-22 09:04:39 -07:00
gpu
Merge tag 'drm-intel-next-fixes-2015-04-25' of git://anongit.freedesktop.org/drm-intel into drm-fixes
2015-04-27 10:35:15 +10:00
hid
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2015-04-14 18:25:15 -07:00
hsi
HSI: cmt_speech: fix error return code
2015-04-05 14:45:27 +02:00
hv
Drivers: hv: hv_balloon: correctly handle num_pages>INT_MAX case
2015-04-03 16:20:12 +02:00
hwmon
hwmon: (w83795) use find_closest_descending() in pwm_freq_to_reg()
2015-04-17 09:03:55 -04:00
hwspinlock
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hwtracing/coresight
Char/Misc driver patches for 4.1-rc1
2015-04-21 09:42:58 -07:00
i2c
Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2015-04-26 17:44:09 -07:00
ide
ide: remove deprecated use of pci api
2015-04-17 15:32:07 -04:00
idle
Power management and ACPI updates for v4.1-rc1
2015-04-14 20:21:54 -07:00
iio
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2015-04-14 09:50:27 -07:00
infiniband
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-26 17:22:07 -07:00
input
platform/chrome: Updates for v4.1
2015-04-26 13:36:02 -07:00
iommu
Merge git://git.infradead.org/intel-iommu
2015-04-26 17:47:46 -07:00
ipack
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irqchip
Initial ACPI support for arm64:
2015-04-24 08:23:45 -07:00
isdn
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2015-04-15 09:00:47 -07:00
leds
This is the bulk of GPIO changes for the v4.1 development
2015-04-18 08:22:10 -04:00
lguest
Some virtio internal cleanups, a new virtio device "virtio input", and
2015-04-22 10:55:06 -07:00
macintosh
Merge branch 'next-remove-ldst' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc into next
2015-04-07 13:25:14 +10:00
mailbox
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mcb
mcb: request_mem_region() returns NULL on error
2015-04-03 16:15:30 +02:00
md
md updates for 4.1
2015-04-24 09:28:01 -07:00
media
v4l: xilinx: fix for include file movement
2015-04-26 09:56:08 -07:00
memory
ARM: SoC driver updates for v4.1
2015-04-22 09:18:17 -07:00
memstick
memstick: mspro_block: add missing curly braces
2015-04-17 09:04:09 -04:00
message
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mfd
platform/chrome: Updates for v4.1
2015-04-26 13:36:02 -07:00
misc
Char/Misc driver patches for 4.1-rc1
2015-04-21 09:42:58 -07:00
mmc
Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
2015-04-24 09:49:37 -07:00
mtd
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-26 17:22:07 -07:00
net
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-26 17:22:07 -07:00
nfc
NFC: logging neatening
2015-04-07 12:05:12 +02:00
ntb
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nubus
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of
Devicetree updates for 4.1:
2015-04-24 08:46:18 -07:00
oprofile
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-26 17:22:07 -07:00
parisc
parisc: Eliminate sg_virt_addr() and private scatterlist.h
2015-04-21 22:02:43 +02:00
parport
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pci
xen: features and fixes for 4.1-rc0
2015-04-16 14:01:03 -05:00
pcmcia
ARM: SoC cleanups for v4.1
2015-04-22 09:04:39 -07:00
phy
USB patches for 4.1-rc1
2015-04-13 17:07:21 -07:00
pinctrl
pinctrl: fix allmodconfig noise
2015-04-15 10:02:42 +02:00
platform
platform-drivers-x86 for 4.1
2015-04-26 13:44:46 -07:00
pnp
Power management and ACPI updates for v4.1-rc1
2015-04-14 20:21:54 -07:00
power
power: twl4030_madc_battery: Add missing MODULE_ALIAS
2015-04-06 19:39:57 +02:00
powercap
powercap / RAPL: Add support for Intel Skylake processors
2015-04-15 23:06:16 +02:00
pps
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ps3
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ptp
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pwm
pwm: Remove __init initializer for pwm_add_table()
2015-04-23 14:50:52 +02:00
rapidio
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ras
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regulator
== Changes to existing drivers ==
2015-04-14 17:29:55 -07:00
remoteproc
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reset
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rpmsg
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rtc
drivers/rtc/rtc-at91rm9200.c: make IO endian agnostic
2015-04-17 09:04:12 -04:00
s390
Some virtio internal cleanups, a new virtio device "virtio input", and
2015-04-22 10:55:06 -07:00
sbus
drivers/sbus/char/envctrl.c: ignore orderly_poweroff return value
2015-04-15 16:35:23 -07:00
scsi
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
2015-04-24 10:22:09 -07:00
sfi
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sh
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sn
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soc
- fix unused variable warning for pmic-wrapper
2015-04-14 00:43:28 +02:00
spi
Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
2015-04-24 09:49:37 -07:00
spmi
spmi: pmic_arb: remove ARM build time dependency
2015-04-03 16:15:30 +02:00
ssb
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
2015-04-17 15:50:54 -04:00
staging
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-26 17:22:07 -07:00
target
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
2015-04-24 10:22:09 -07:00
tc
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thermal
drivers: thermal: st: remove several sparse warnings
2015-04-07 13:43:28 -07:00
thunderbolt
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tty
xen/events: don't bind non-percpu VIRQs with percpu chip
2015-05-19 19:55:36 +01:00
uio
Revert "uio: constify of_device_id array"
2015-04-03 16:04:21 +02:00
usb
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-26 17:22:07 -07:00
uwb
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vfio
vfio-pci: Fix use after free
2015-04-08 08:11:51 -06:00
vhost
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
2015-04-24 10:22:09 -07:00
video
fbdev changes for v4.1
2015-04-20 15:16:25 -07:00
virt
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virtio
virtio: drop virtio_device_is_legacy_only
2015-04-15 12:41:14 +09:30
vlynq
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vme
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w1
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watchdog
Merge git://www.linux-watchdog.org/linux-watchdog
2015-04-22 11:22:55 -07:00
xen
xen/events: don't bind non-percpu VIRQs with percpu chip
2015-05-19 19:55:36 +01:00
zorro
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Kconfig
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Makefile
coresight: moving to new "hwtracing" directory
2015-04-03 16:17:04 +02:00