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Juergen Gross 279f21face xen/events: avoid handling the same event on two cpus at the same time 
commit b6622798bc50b625a1e62f82c7190df40c1f5b21 upstream.

When changing the cpu affinity of an event it can happen today that
(with some unlucky timing) the same event will be handled on the old
and the new cpu at the same time.

Avoid that by adding an "event active" flag to the per-event data and
call the handler only if this flag isn't set.

Cc: stable@vger.kernel.org
Reported-by: Julien Grall <julien@xen.org>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Julien Grall <jgrall@amazon.com>
Link: https://lore.kernel.org/r/20210306161833.4552-4-jgross@suse.com
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2021-04-12 12:53:13 +08:00
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accessibility
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acpi ACPI: video: Add DMI quirk for GIGABYTE GB-BXBT-2807 2021-04-12 12:52:54 +08:00
amba amba: Fix resource leak for drivers without .remove 2021-04-12 12:52:26 +08:00
android binder: add flag to clear buffer on txn complete 2021-03-16 16:43:28 +08:00
ata ata: ahci_brcm: Add back regulators management 2021-04-12 12:52:20 +08:00
atm atm: idt77252: call pci_disable_device() on error path 2021-04-12 12:51:07 +08:00
auxdisplay auxdisplay: ht16k33: Fix refresh rate handling 2021-04-12 12:52:25 +08:00
base software node: Fix node registration 2021-04-12 12:53:05 +08:00
bcma
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block zram: fix return value on writeback_store 2021-04-12 12:53:11 +08:00
bluetooth Bluetooth: hci_h5: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for btrtl 2021-04-12 12:52:46 +08:00
bus bus: fsl-mc: fix error return code in fsl_mc_object_allocate() 2021-03-16 16:43:09 +08:00
cdrom
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char tpm, tpm_tis: Decorate tpm_get_timeouts() with request_locality() 2021-04-12 12:52:50 +08:00
clk clk: aspeed: Fix APLL calculate formula from ast2600-A2 2021-04-12 12:52:28 +08:00
clocksource clocksource/drivers/mxs_timer: Add missing semicolon when DEBUG is defined 2021-04-12 12:52:24 +08:00
connector
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counter
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cpufreq cpufreq: intel_pstate: Get per-CPU max freq via MSR_HWP_CAPABILITIES if available 2021-04-12 12:52:40 +08:00
cpuidle cpuidle: Fixup IRQ state 2021-03-16 16:35:25 +08:00
crypto crypto: sun4i-ss - initialize need_fallback 2021-04-12 12:52:36 +08:00
dax device-dax/core: Fix memory leak when rmmod dax.ko 2021-03-16 16:43:45 +08:00
dca
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devfreq PM / devfreq: tegra30: Fix integer overflow on CPU's freq max out 2021-03-16 16:36:35 +08:00
dio
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dma dmaengine: hsu: disable spurious interrupt 2021-04-12 12:52:24 +08:00
dma-buf dmabuf: fix use-after-free of dmabuf's file->f_inode 2021-04-12 12:51:14 +08:00
edac EDAC/amd64: Fix PCI component registration 2021-03-16 16:43:29 +08:00
eisa
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extcon extcon: max77693: Fix modalias string 2021-03-16 16:43:12 +08:00
firewire
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firmware firmware: imx: select SOC_BUS to fix firmware build 2021-04-12 12:51:46 +08:00
fpga fpga: dfl: fix bug in port reset handshake 2021-03-16 16:32:23 +08:00
fsi
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gnss
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gpio gpio: pcf857x: Fix missing first interrupt 2021-04-12 12:52:39 +08:00
gpu qxl: Fix uninitialised struct field head.surface_id 2021-04-12 12:53:01 +08:00
greybus
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hid HID: logitech-dj: add support for the new lightspeed connection iteration 2021-04-12 12:53:03 +08:00
hsi HSI: Fix PM usage counter unbalance in ssi_hw_init 2021-04-12 12:52:22 +08:00
hv Drivers: hv: vmbus: Avoid use-after-free in vmbus_onoffer_rescind() 2021-04-12 12:52:21 +08:00
hwmon hwmon: (pwm-fan) Ensure that calculation doesn't discard big period values 2021-04-12 12:51:24 +08:00
hwspinlock
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hwtracing stm class: Fix module init return on allocation failure 2021-04-12 12:51:37 +08:00
i2c i2c: rcar: optimize cacheline to minimize HW race condition 2021-04-12 12:53:02 +08:00
i3c i3c master: fix missing destroy_workqueue() on error in i3c_master_register 2021-03-16 16:43:55 +08:00
ide scsi: ide: Do not set the RQF_PREEMPT flag for sense requests 2021-04-12 12:51:06 +08:00
idle
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iio iio: ad5504: Fix setting power-down state 2021-04-12 12:51:37 +08:00
infiniband IB/mlx5: Add missing error code 2021-04-12 12:52:52 +08:00
input Input: applespi - don't wait for responses to commands indefinitely. 2021-04-12 12:53:03 +08:00
interconnect interconnect: qcom: qcs404: Remove GPU and display RPM IDs 2021-03-16 16:42:11 +08:00
iommu iommu/amd: Fix performance counter initialization 2021-04-12 12:53:03 +08:00
ipack
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irqchip irqchip/mips-cpu: Set IPI domain parent chip 2021-04-12 12:51:37 +08:00
isdn misdn: dsp: select CONFIG_BITREVERSE 2021-04-12 12:51:24 +08:00
leds leds: trigger: fix potential deadlock with libata 2021-04-12 12:51:44 +08:00
lightnvm lightnvm: fix memory leak when submit fails 2021-04-12 12:51:39 +08:00
macintosh macintosh/via-macii: Access autopoll_devs when inside lock 2021-03-16 16:33:39 +08:00
mailbox mailbox: avoid timer start from callback 2021-03-16 16:38:59 +08:00
mcb
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md dm table: fix zoned iterate_devices based device capability checks 2021-04-12 12:52:53 +08:00
media media: rc: compile rc-cec.c into rc-core 2021-04-12 12:53:01 +08:00
memory memory: ti-aemif: Drop child node when jumping out loop 2021-04-12 12:52:13 +08:00
memstick memstick: r592: Fix error return in r592_probe() 2021-03-16 16:43:02 +08:00
message scsi: mptfusion: Fix null pointer dereferences in mptscsih_remove() 2021-03-16 16:39:58 +08:00
mfd mfd: wm831x-auxadc: Prevent use after free in wm831x_auxadc_read_irq() 2021-04-12 12:52:27 +08:00
misc misc: fastrpc: restrict user apps from sending kernel RPC messages 2021-04-12 12:53:08 +08:00
mmc mmc: cqhci: Fix random crash when remove mmc module/card 2021-04-12 12:53:06 +08:00
mtd mtd: spi-nor: hisi-sfc: Put child node np on error path 2021-04-12 12:52:38 +08:00
mux
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net sh_eth: fix TRSCER mask for R7S72100 2021-04-12 12:53:10 +08:00
nfc nfc: s3fwrn5: Release the nfc firmware 2021-03-16 16:43:15 +08:00
ntb NTB: hw: amd: fix an issue about leak system resources 2021-03-16 16:39:10 +08:00
nubus
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nvdimm libnvdimm/dimm: Avoid race between probe and available_slots_show() 2021-04-12 12:51:55 +08:00
nvme nvme: release namespace head reference on error 2021-04-12 12:53:12 +08:00
nvmem nvmem: core: skip child nodes not matching binding 2021-04-12 12:52:30 +08:00
of of/fdt: Make sure no-map does not remove already reserved regions 2021-04-12 12:52:24 +08:00
opp opp: Reduce the size of critical section in _opp_table_kref_release() 2021-03-16 16:40:41 +08:00
oprofile
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parisc parisc: mask out enable and reserved bits from sba imask 2021-03-16 16:33:54 +08:00
parport
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pci PCI: Fix pci_register_io_range() memory leak 2021-04-12 12:53:04 +08:00
pcmcia
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perf drivers/perf: thunderx2_pmu: Fix memory resource error handling 2021-03-16 16:38:23 +08:00
phy phy: rockchip-emmc: emmc_phy_init() always return 0 2021-04-12 12:52:29 +08:00
pinctrl pinctrl: ingenic: Fix JZ4760 support 2021-04-12 12:51:38 +08:00
platform Platform: OLPC: Fix probe error handling 2021-04-12 12:53:02 +08:00
pnp
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power power: reset: at91-sama5d2_shdwc: fix wkupdbc mask 2021-04-12 12:52:24 +08:00
powercap powercap: restrict energy meter to root access 2021-03-16 16:40:32 +08:00
pps
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ps3 powerpc/ps3: use dma_mapping_error() 2021-03-16 16:43:15 +08:00
ptp
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pwm pwm: rockchip: rockchip_pwm_probe(): Remove superfluous clk_unprepare() 2021-04-12 12:52:30 +08:00
rapidio rapidio: fix the missed put_device() for rio_mport_add_riodev 2021-03-16 16:38:59 +08:00
ras
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regulator regulator: qcom-rpmh: fix pm8009 ldo7 2021-04-12 12:52:28 +08:00
remoteproc remoteproc: qcom: Fix potential NULL dereference in adsp_init_mmio() 2021-03-16 16:43:11 +08:00
reset
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rpmsg rpmsg: glink: Use complete_all for open states 2021-03-16 16:39:50 +08:00
rtc rtc: s5m: select REGMAP_I2C 2021-04-12 12:52:24 +08:00
s390 s390/dasd: fix hanging IO request during DASD driver unbind 2021-04-12 12:53:06 +08:00
sbus
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scsi scsi: libiscsi: Fix iscsi_prep_scsi_cmd_pdu() error handling 2021-04-12 12:53:04 +08:00
sfi
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sh
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siox
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slimbus slimbus: qcom-ngd-ctrl: Avoid sending power requests without QMI 2021-03-16 16:42:54 +08:00
soc soc: aspeed: snoop: Add clock control logic 2021-04-12 12:52:15 +08:00
soundwire soundwire: cadence: fix ACK/NAK handling 2021-04-12 12:52:29 +08:00
spi spi: stm32: make spurious and overrun interrupts visible 2021-04-12 12:53:02 +08:00
spmi spmi: spmi-pmic-arb: Fix hw_irq overflow 2021-04-12 12:52:39 +08:00
ssb
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staging staging: comedi: pcl818: Fix endian problem for AI command data 2021-04-12 12:53:10 +08:00
target scsi: target: core: Prevent underflow for service actions 2021-04-12 12:53:04 +08:00
tc
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tee tee: optee: replace might_sleep with cond_resched 2021-04-12 12:51:45 +08:00
thermal thermal/drivers/cpufreq_cooling: Update cpufreq_state only if state has changed 2021-03-16 16:43:48 +08:00
thunderbolt thunderbolt: Fix use-after-free in remove_unplugged_switch() 2021-03-16 16:42:03 +08:00
tty vt/consolemap: do font sum unsigned 2021-04-12 12:52:46 +08:00
uio uio: avoid to request_irq when the legacy irq is not connected 2021-03-16 16:43:58 +08:00
usb usbip: fix vudc usbip_sockfd_store races leading to gpf 2021-04-12 12:53:08 +08:00
vfio vfio/type1: Use follow_pte() 2021-04-12 12:52:31 +08:00
vhost vhost_net: fix ubuf refcount incorrectly when sendmsg fails 2021-04-12 12:51:09 +08:00
video udlfb: Fix memory leak in dlfb_usb_probe 2021-04-12 12:52:43 +08:00
virt virt: vbox: Do not use wait_event_interruptible when called from kernel context 2021-04-12 12:52:10 +08:00
virtio virtio_ring: Fix two use after free bugs 2021-03-16 16:43:19 +08:00
visorbus
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vlynq
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vme
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w1 w1: mxc_w1: Fix timeout resolution problem leading to bus error 2021-03-16 16:39:58 +08:00
watchdog watchdog: mei_wdt: request stop on unregister 2021-04-12 12:52:38 +08:00
xen xen/events: avoid handling the same event on two cpus at the same time 2021-04-12 12:53:13 +08:00
zorro
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Kconfig
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Makefile
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