Chris Co 1c1add911f Drivers: hv: vmbus: Allow cleanup of VMBUS_CONNECT_CPU if disconnected ... commit 92e4dc8b05 upstream. When invoking kexec() on a Linux guest running on a Hyper-V host, the kernel panics. RIP: 0010:cpuhp_issue_call+0x137/0x140 Call Trace: __cpuhp_remove_state_cpuslocked+0x99/0x100 __cpuhp_remove_state+0x1c/0x30 hv_kexec_handler+0x23/0x30 [hv_vmbus] hv_machine_shutdown+0x1e/0x30 machine_shutdown+0x10/0x20 kernel_kexec+0x6d/0x96 __do_sys_reboot+0x1ef/0x230 __x64_sys_reboot+0x1d/0x20 do_syscall_64+0x6b/0x3d8 entry_SYSCALL_64_after_hwframe+0x44/0xa9 This was due to hv_synic_cleanup() callback returning -EBUSY to cpuhp_issue_call() when tearing down the VMBUS_CONNECT_CPU, even if the vmbus_connection.conn_state = DISCONNECTED. hv_synic_cleanup() should succeed in the case where vmbus_connection.conn_state is DISCONNECTED. Fix is to add an extra condition to test for vmbus_connection.conn_state == CONNECTED on the VMBUS_CONNECT_CPU and only return early if true. This way the kexec() path can still shut everything down while preserving the initial behavior of preventing CPU offlining on the VMBUS_CONNECT_CPU while the VM is running. Fixes: 8a857c5542 ("Drivers: hv: vmbus: Always handle the VMBus messages on CPU0") Signed-off-by: Chris Co <chrco@microsoft.com> Reviewed-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20201110190118.15596-1-chrco@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-11-24 13:29:23 +01:00
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accessibility	…
acpi	ACPI: button: Add DMI quirk for Medion Akoya E2228T	2020-11-24 13:29:00 +01:00
amba	…
android	binder: Remove bogus warning on failed same-process transaction	2020-10-29 09:57:37 +01:00
ata	ata: sata_nv: Fix retrieving of active qcs	2020-11-05 11:43:12 +01:00
atm	atm: nicstar: Unmap DMA on send error	2020-11-24 13:28:55 +01:00
auxdisplay	…
base	PM: runtime: Resume the device earlier in __device_release_driver()	2020-11-10 12:37:34 +01:00
bcma	…
block	nbd: fix a block_device refcount leak in nbd_release	2020-11-18 19:20:27 +01:00
bluetooth	Bluetooth: btusb: Fix memleak in btusb_mtk_submit_wmt_recv_urb	2020-10-29 09:58:08 +01:00
bus	bus/fsl_mc: Do not rely on caller to provide non NULL mc_io	2020-11-05 11:43:19 +01:00
cdrom	…
char	virtio: virtio_console: fix DMA memory allocation for rproc serial	2020-11-18 19:20:29 +01:00
clk	clk: ti: clockdomain: fix static checker warning	2020-11-05 11:43:20 +01:00
clocksource	clocksource/drivers/timer-gx6605s: Fixup counter reload	2020-10-07 08:01:25 +02:00
connector	…
counter	counter: 104-quad-8: Add lock guards - generic interface	2020-05-02 08:48:44 +02:00
cpufreq	acpi-cpufreq: Honor _PSD table setting on new AMD CPUs	2020-11-05 11:43:25 +01:00
cpuidle	cpuidle: Fixup IRQ state	2020-09-09 19:12:21 +02:00
crypto	chelsio/chtls: fix always leaking ctrl_skb	2020-11-10 12:37:25 +01:00
dax	dax: Fix alloc_dax_region() compile warning	2020-10-01 13:17:15 +02:00
dca	…
devfreq	PM / devfreq: tegra30: Fix integer overflow on CPU's freq max out	2020-10-01 13:17:14 +02:00
dio	…
dma	dmaengine: dma-jz4780: Fix race in jz4780_dma_tx_status	2020-11-05 11:43:29 +01:00
dma-buf	dmabuf: fix NULL pointer dereference in dma_buf_release()	2020-10-01 13:18:24 +02:00
edac	EDAC/ti: Fix handling of platform_get_irq() error	2020-10-29 09:57:29 +01:00
eisa	…
extcon	extcon: ptn5150: Fix usage of atomic GPIO with sleeping GPIO chips	2020-11-05 11:43:24 +01:00
firewire	…
firmware	firmware: arm_scmi: Add missing Rx size re-initialisation	2020-11-05 11:43:12 +01:00
fpga	fpga: dfl: fix bug in port reset handshake	2020-07-29 10:18:31 +02:00
fsi	…
gnss	gnss: sirf: fix error return code in sirf_probe()	2020-06-22 09:31:20 +02:00
gpio	gpio: pcie-idio-24: Enable PEX8311 interrupts	2020-11-18 19:20:31 +01:00
gpu	drm/sun4i: dw-hdmi: fix error return code in sun8i_dw_hdmi_bind()	2020-11-24 13:29:07 +01:00
greybus	…
hid	HID: logitech-dj: Fix an error in mse_bluetooth_descriptor	2020-11-24 13:29:21 +01:00
hsi	…
hv	Drivers: hv: vmbus: Allow cleanup of VMBUS_CONNECT_CPU if disconnected	2020-11-24 13:29:23 +01:00
hwmon	hwmon: (pwm-fan) Fix RPM calculation	2020-11-24 13:29:01 +01:00
hwspinlock	…
hwtracing	Revert "coresight: Make sysfs functional on topologies with per core sink"	2020-11-10 12:37:31 +01:00
i2c	i2c: sh_mobile: implement atomic transfers	2020-11-18 19:20:25 +01:00
i3c	i3c: master: Fix error return in cdns_i3c_master_probe()	2020-10-29 09:57:51 +01:00
ide	…
idle	…
iio	iio: adc: mediatek: fix unset field	2020-11-24 13:29:21 +01:00
infiniband	RMDA/sw: Don't allow drivers using dma_virt_ops on highmem configs	2020-11-24 13:29:05 +01:00
input	Input: resistive-adc-touch - fix kconfig dependency on IIO_BUFFER	2020-11-24 13:29:05 +01:00
interconnect	…
iommu	iommu/vt-d: Avoid panic if iommu init fails in tboot system	2020-11-24 13:29:17 +01:00
ipack	ipack: tpci200: fix error return code in tpci200_register()	2020-05-27 17:46:47 +02:00
irqchip	irqchip/stm32-exti: Avoid losing interrupts due to clearing pending bits by mistake	2020-09-03 11:27:06 +02:00
isdn	…
leds	leds: bcm6328, bcm6358: use devres LED registering function	2020-11-05 11:43:24 +01:00
lightnvm	lightnvm: fix out-of-bounds write to array devices->info[]	2020-10-29 09:58:00 +01:00
macintosh	macintosh/via-macii: Access autopoll_devs when inside lock	2020-08-19 08:16:15 +02:00
mailbox	mailbox: avoid timer start from callback	2020-10-29 09:57:53 +01:00
mcb	…
md	md/raid5: fix oops during stripe resizing	2020-11-05 11:43:22 +01:00
media	media: uvcvideo: Fix uvc_ctrl_fixup_xu_info() not having any effect	2020-11-05 11:43:24 +01:00
memory	memory: emif: Remove bogus debugfs error handling	2020-11-05 11:43:21 +01:00
memstick	memstick: Skip allocating card when removing host	2020-10-07 08:01:25 +02:00
message	scsi: mptfusion: Fix null pointer dereferences in mptscsih_remove()	2020-11-05 11:43:25 +01:00
mfd	mfd: sprd: Add wakeup capability for PMIC IRQ	2020-11-18 19:20:26 +01:00
misc	mei: protect mei_cl_mtu from null dereference	2020-11-18 19:20:30 +01:00
mmc	mmc: renesas_sdhi_core: Add missing tmio_mmc_host_free() at remove	2020-11-18 19:20:31 +01:00
mtd	mtd: spi-nor: Don't copy self-pointing struct around	2020-11-10 12:37:28 +01:00
mux	…
net	can: m_can: process interrupt only when not runtime suspended	2020-11-24 13:29:18 +01:00
nfc	NFC: st95hf: Fix memleak in st95hf_in_send_cmd	2020-09-17 13:47:45 +02:00
ntb	NTB: hw: amd: fix an issue about leak system resources	2020-10-29 09:58:00 +01:00
nubus	…
nvdimm	libnvdimm/security: ensure sysfs poll thread woke up and fetch updated attr	2020-08-21 13:05:35 +02:00
nvme	nvme-tcp: avoid repeated request completion	2020-11-18 19:20:24 +01:00
nvmem	nvmem: core: fix possibly memleak when use nvmem_cell_info_to_nvmem_cell()	2020-10-29 09:57:42 +01:00
of	of/address: Fix of_node memory leak in of_dma_is_coherent	2020-11-18 19:20:28 +01:00
opp	opp: Reduce the size of critical section in _opp_table_kref_release()	2020-11-18 19:20:21 +01:00
oprofile	…
parisc	parisc: mask out enable and reserved bits from sba imask	2020-08-19 08:16:26 +02:00
parport	…
pci	PCI: qcom: Make sure PCIe is reset before init for rev 2.1.0	2020-11-18 19:20:16 +01:00
pcmcia	…
perf	drivers/perf: thunderx2_pmu: Fix memory resource error handling	2020-10-29 09:57:30 +01:00
phy	phy: marvell: comphy: Convert internal SMCC firmware return codes to errno	2020-11-01 12:01:07 +01:00
pinctrl	pinctrl: rockchip: enable gpio pclk for rockchip_gpio_to_irq	2020-11-24 13:29:00 +01:00
platform	platform/x86: mlx-platform: Remove PSU EEPROM configuration	2020-10-29 09:57:44 +01:00
pnp	…
power	power: supply: test_power: add missing newlines when printing parameters by sysfs	2020-11-05 11:43:19 +01:00
powercap	powercap: restrict energy meter to root access	2020-11-10 21:13:20 +01:00
pps	…
ps3	…
ptp	…
pwm	pwm: img: Fix null pointer access in probe	2020-10-29 09:57:54 +01:00
rapidio	rapidio: fix the missed put_device() for rio_mport_add_riodev	2020-10-29 09:57:53 +01:00
ras	…
regulator	regulator: workaround self-referent regulators	2020-11-24 13:29:22 +01:00
remoteproc	remoteproc: qcom_q6v5_mss: Validate modem blob firmware size before load	2020-08-21 13:05:29 +02:00
reset	…
rpmsg	rpmsg: glink: Use complete_all for open states	2020-11-05 11:43:20 +01:00
rtc	rtc: rx8010: don't modify the global rtc ops	2020-11-05 11:43:33 +01:00
s390	s390/dasd: fix null pointer dereference for ERP requests	2020-11-24 13:29:23 +01:00
sbus	…
scsi	scsi: ufs: Fix unbalanced scsi_block_reqs_cnt caused by ufshcd_hold()	2020-11-24 13:29:00 +01:00
sfi	…
sh	…
siox	…
slimbus	slimbus: qcom-ngd-ctrl: disable ngd in qmi server down callback	2020-10-29 09:57:42 +01:00
soc	soc: fsl: qbman: Fix return value on success	2020-10-29 09:57:59 +01:00
soundwire	soundwire: bus: disable pm_runtime in sdw_slave_delete	2020-10-01 13:17:36 +02:00
spi	spi: bcm2835aux: Fix use-after-free on unbind	2020-11-24 13:29:22 +01:00
spmi	…
ssb	…
staging	staging: rtl8723bs: Add 024c:0627 to the list of SDIO device-ids	2020-11-24 13:29:21 +01:00
target	scsi: target: tcmu: Fix warning: 'page' may be used uninitialized	2020-10-29 09:57:44 +01:00
tc	…
tee	…
thermal	thermal: rcar_thermal: Handle probe error gracefully	2020-10-01 13:17:44 +02:00
thunderbolt	thunderbolt: Add the missed ida_simple_remove() in ring_request_msix()	2020-11-18 19:20:29 +01:00
tty	tty: serial: imx: keep console clocks always on	2020-11-24 13:29:20 +01:00
uio	uio: Fix use-after-free in uio_unregister_device()	2020-11-18 19:20:29 +01:00
usb	xhci: hisilicon: fix refercence leak in xhci_histb_probe	2020-11-18 19:20:29 +01:00
vfio	vfio/pci: Bypass IGD init in case of -ENODEV	2020-11-18 19:20:25 +01:00
vhost	vringh: fix __vringh_iov() when riov and wiov are different	2020-11-05 11:43:35 +01:00
video	video: fbdev: pvr2fb: initialize variables	2020-11-05 11:43:15 +01:00
virt	drivers/virt/fsl_hypervisor: Fix error handling path	2020-10-29 09:57:38 +01:00
virtio	virtio_ring: Avoid loop when vq is broken in virtqueue_poll	2020-08-26 10:40:57 +02:00
visorbus	…
vlynq	…
vme	…
w1	w1: mxc_w1: Fix timeout resolution problem leading to bus error	2020-11-05 11:43:25 +01:00
watchdog	drivers: watchdog: rdc321x_wdt: Fix race condition bugs	2020-11-05 11:43:20 +01:00
xen	xen/events: block rogue events for some time	2020-11-05 11:43:12 +01:00
zorro	…
Kconfig	…
Makefile	…