Guilherme G. Piccoli a2a3baa299 net: ena: Add PCI shutdown handler to allow safe kexec ... [ Upstream commit 428c491332 ] Currently ENA only provides the PCI remove() handler, used during rmmod for example. This is not called on shutdown/kexec path; we are potentially creating a failure scenario on kexec: (a) Kexec is triggered, no shutdown() / remove() handler is called for ENA; instead pci_device_shutdown() clears the master bit of the PCI device, stopping all DMA transactions; (b) Kexec reboot happens and the device gets enabled again, likely having its FW with that DMA transaction buffered; then it may trigger the (now invalid) memory operation in the new kernel, corrupting kernel memory area. This patch aims to prevent this, by implementing a shutdown() handler quite similar to the remove() one - the difference being the handling of the netdev, which is unregistered on remove(), but following the convention observed in other drivers, it's only detached on shutdown(). This prevents an odd issue in AWS Nitro instances, in which after the 2nd kexec the next one will fail with an initrd corruption, caused by a wild DMA write to invalid kernel memory. The lspci output for the adapter present in my instance is: 00:05.0 Ethernet controller [0200]: Amazon.com, Inc. Elastic Network Adapter (ENA) [1d0f:ec20] Suggested-by: Gavin Shan <gshan@redhat.com> Signed-off-by: Guilherme G. Piccoli <gpiccoli@canonical.com> Acked-by: Sameeh Jubran <sameehj@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-04-01 11:01:34 +02:00
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accessibility	…
acpi	ACPI: PM: s2idle: Rework ACPI events synchronization	2020-04-01 11:01:29 +02:00
amba	ARM updates for 5.4-rc:	2019-10-23 06:26:33 -04:00
android	binderfs: use refcount for binder control devices too	2020-03-25 08:25:50 +01:00
ata	ata: ahci: Add shutdown to freeze hardware resources of ahci	2020-02-28 17:22:28 +01:00
atm	fore200e: Fix incorrect checks of NULL pointer dereference	2020-02-24 08:36:36 +01:00
auxdisplay	…
base	driver code: clarify and fix platform device DMA mask allocation	2020-03-18 07:17:56 +01:00
bcma	…
block	virtio-blk: fix hw_queue stopped on arbitrary error	2020-03-18 07:17:48 +01:00
bluetooth	Bluetooth: btusb: Disable runtime suspend on Realtek devices	2020-02-11 04:35:09 -08:00
bus	bus: ti-sysc: Fix 1-wire reset quirk	2020-03-12 13:00:31 +01:00
cdrom	cdrom: respect device capabilities during opening action	2020-01-04 19:18:25 +01:00
char	ipmi_si: Avoid spurious errors for optional IRQs	2020-03-18 07:17:52 +01:00
clk	clk: uniphier: Add SCSSI clock gate for each channel	2020-02-24 08:36:42 +01:00
clocksource	clocksource: davinci: only enable clockevents once tim34 is initialized	2020-02-24 08:36:46 +01:00
connector	…
counter	…
cpufreq	cpufreq: Fix policy initialization for internal governor drivers	2020-03-05 16:43:44 +01:00
cpuidle	cpuidle: teo: Avoid using "early hits" incorrectly	2020-02-05 21:22:52 +00:00
crypto	crypto: chtls - Fixed memory leak	2020-02-24 08:36:40 +01:00
dax	…
dca	…
devfreq	Revert "PM / devfreq: Modify the device name as devfreq(X) for sysfs"	2020-03-05 16:43:43 +01:00
dio	…
dma	dmaengine: coh901318: Fix a double lock bug in dma_tc_handle()	2020-03-12 13:00:30 +01:00
dma-buf	dma-buf: free dmabuf->name in dma_buf_release()	2020-03-12 13:00:30 +01:00
edac	EDAC/synopsys: Do not print an error with back-to-back snprintf() calls	2020-03-12 13:00:31 +01:00
eisa	…
extcon	extcon-intel-cht-wc: Don't reset USB data connection at probe	2020-02-01 09:34:46 +00:00
firewire	net: add annotations on hh->hh_len lockless accesses	2020-01-09 10:20:06 +01:00
firmware	efi: Add a sanity check to efivar_store_raw()	2020-03-18 07:17:53 +01:00
fpga	…
fsi	fsi: core: Fix small accesses and unaligned offsets via sysfs	2019-12-31 16:45:09 +01:00
gnss	…
gpio	gpiolib: Set lockdep class for hierarchical irq domains	2020-02-24 08:36:49 +01:00
gpu	drm/bridge: dw-hdmi: fix AVI frame colorimetry	2020-03-25 08:25:59 +01:00
greybus	…
hid	HID: add ALWAYS_POLL quirk to lenovo pixart mouse	2020-03-21 08:11:59 +01:00
hsi	…
hv	hv_balloon: Balloon up according to request page number	2020-02-11 04:35:21 -08:00
hwmon	hwmon: (adt7462) Fix an error return in ADT7462_REG_VOLT()	2020-03-12 13:00:30 +01:00
hwspinlock	…
hwtracing	stm class: sys-t: Fix the use of time_after()	2020-03-25 08:25:56 +01:00
i2c	i2c: acpi: put device when verifying client fails	2020-03-18 07:17:58 +01:00
i3c	…
ide	ide: serverworks: potential overflow in svwks_set_pio_mode()	2020-02-24 08:36:53 +01:00
idle	…
iio	iio: light: vcnl4000: update sampling periods for vcnl4040	2020-03-25 08:25:54 +01:00
infiniband	IB/hfi1, qib: Ensure RCU is locked when accessing list	2020-03-12 13:00:30 +01:00
input	Input: edt-ft5x06 - work around first register access error	2020-02-24 08:36:45 +01:00
interconnect	interconnect: qcom: qcs404: Walk the list safely on node removal	2019-12-17 19:55:39 +01:00
iommu	iommu/amd: Fix IOMMU AVIC not properly update the is_run bit in IRTE	2020-03-18 07:17:58 +01:00
ipack	…
irqchip	irqchip/gic-v3-its: Reference to its_invall_cmd descriptor when building INVALL	2020-02-24 08:37:01 +01:00
isdn	net: use skb_queue_empty_lockless() in poll() handlers	2019-10-28 13:33:41 -07:00
leds	leds: pca963x: Fix open-drain initialization	2020-02-24 08:36:24 +01:00
lightnvm	…
macintosh	macintosh: windfarm: fix MODINFO regression	2020-03-18 07:17:53 +01:00
mailbox	mailbox: imx: Fix Tx doorbell shutdown path	2020-01-04 19:18:30 +01:00
mcb	…
md	dm integrity: use dm_bio_record and dm_bio_restore	2020-03-25 08:25:48 +01:00
media	media: v4l2-mem2mem.c: fix broken links	2020-03-12 13:00:21 +01:00
memory	memory: mtk-smi: Add PM suspend and resume ops	2020-01-17 19:48:59 +01:00
memstick	…
message	scsi: mptfusion: Fix double fetch bug in ioctl	2020-01-23 08:22:35 +01:00
mfd	mfd: max77650: Select REGMAP_IRQ in Kconfig	2020-02-14 16:34:19 -05:00
misc	mmc: rtsx_pci: Fix support for speed-modes that relies on tuning	2020-03-25 08:25:54 +01:00
mmc	mmc: sdhci-tegra: Fix busy detection by enabling MMC_CAP_NEED_RSP_BUSY	2020-04-01 11:01:29 +02:00
mtd	mtd: sharpslpart: Fix unsigned comparison to zero	2020-02-14 16:34:18 -05:00
mux	…
net	net: ena: Add PCI shutdown handler to allow safe kexec	2020-04-01 11:01:34 +02:00
nfc	nfc: pn544: Fix occasional HW initialization failure	2020-03-05 16:43:32 +01:00
ntb	…
nubus	…
nvdimm	libnvdimm/btt: fix variable 'rc' set but not used	2020-01-04 19:18:12 +01:00
nvme	nvmet-tcp: set MSG_MORE only if we actually have more to send	2020-03-25 08:25:59 +01:00
nvmem	nvmem: core: fix memory abort in cleanup path	2020-02-11 04:35:21 -08:00
of	of: Add OF_DMA_DEFAULT_COHERENT & select it on powerpc	2020-02-11 04:35:25 -08:00
opp	opp: Free static OPPs on errors while adding them	2020-02-24 08:36:34 +01:00
oprofile	…
parisc	parisc: Remove 32-bit DMA enforcement from sba_iommu	2019-10-14 21:44:26 +02:00
parport	parport: load lowlevel driver if ports not found	2019-12-31 16:45:25 +01:00
pci	PCI: Add DMA alias quirk for PLX PEX NTB	2020-02-24 08:36:37 +01:00
pcmcia	…
perf	drivers/perf: arm_pmu_acpi: Fix incorrect checking of gicc pointer	2020-03-25 08:25:47 +01:00
phy	phy: ti: gmii-sel: do not fail in case of gmii	2020-03-25 08:25:42 +01:00
pinctrl	pinctrl: core: Remove extra kref_get which blocks hogs being freed	2020-03-18 07:17:55 +01:00
platform	platform/x86: intel_mid_powerbtn: Take a copy of ddata	2020-02-14 16:34:12 -05:00
pnp	…
power	power: supply: ltc2941-battery-gauge: fix use-after-free	2020-02-11 04:35:24 -08:00
powercap	powercap: intel_rapl: add NULL pointer check to rapl_mmio_cpu_online()	2020-01-14 20:08:18 +01:00
pps	…
ps3	…
ptp	ptp: free ptp device pin descriptors properly	2020-01-23 08:22:51 +01:00
pwm	pwm: omap-dmtimer: put_device() after of_find_device_by_node()	2020-03-05 16:43:49 +01:00
rapidio	…
ras	…
regulator	regulator: stm32-vrefbuf: fix a possible overshoot when re-enabling	2020-03-12 13:00:29 +01:00
remoteproc	remoteproc: Initialize rproc_class before use	2020-02-24 08:36:54 +01:00
reset	reset: uniphier: Add SCSSI reset control for each channel	2020-02-24 08:36:41 +01:00
rpmsg	rpmsg: char: release allocated memory	2020-01-14 20:08:37 +01:00
rtc	rtc: max8907: add missing select REGMAP_IRQ	2020-03-25 08:25:56 +01:00
s390	s390/dasd: fix data corruption for thin provisioned devices	2020-03-18 07:17:52 +01:00
sbus	…
scsi	scsi: libfc: free response frame from GPN_ID	2020-03-21 08:11:50 +01:00
sfi	…
sh	…
siox	…
slimbus	…
soc	soc: imx-scu: Align imx sc msg structs to 4	2020-03-12 13:00:28 +01:00
soundwire	soundwire: intel: fix PDI/stream mapping for Bulk	2019-12-31 16:45:11 +01:00
spi	spi: spi_register_controller(): free bus id on error paths	2020-03-25 08:25:48 +01:00
spmi	spmi: pmic-arb: Set lockdep class for hierarchical irq domains	2020-02-19 19:53:07 +01:00
ssb	…
staging	staging: greybus: loopback_test: fix potential path truncations	2020-03-25 08:25:59 +01:00
target	scsi: Revert "target: iscsi: Wait for all commands to finish before freeing a session"	2020-02-28 17:22:25 +01:00
tc	…
tee	tee: optee: Fix compilation issue with nommu	2020-02-05 21:22:49 +00:00
thermal	thermal: brcmstb_thermal: Do not use DT coefficients	2020-03-05 16:43:50 +01:00
thunderbolt	thunderbolt: Prevent crash if non-active NVMem file is read	2020-02-28 17:22:13 +01:00
tty	tty: fix compat TIOCGSERIAL checking wrong function ptr	2020-03-25 08:25:52 +01:00
uio	uio: fix a sleep-in-atomic-context bug in uio_dmem_genirq_irqcontrol()	2020-02-24 08:36:27 +01:00
usb	xhci: Do not open code __print_symbolic() in xhci trace events	2020-03-25 08:25:56 +01:00
vfio	vfio/spapr/nvlink2: Skip unpinning pages on error exit	2020-02-24 08:36:43 +01:00
vhost	vhost: Check docket sk_family instead of call getname	2020-03-05 16:43:44 +01:00
video	vgacon: Fix a UAF in vgacon_invert_region	2020-03-12 13:00:19 +01:00
virt	virt: vbox: fix memory leak in hgcm_call_preprocess_linaddr	2019-10-10 14:50:32 +02:00
virtio	virtio_ring: Fix mem leak with vring_new_virtqueue()	2020-03-18 07:17:55 +01:00
visorbus	visorbus: fix uninitialized variable access	2020-02-24 08:36:47 +01:00
vlynq	…
vme	vme: bridges: reduce stack usage	2020-02-24 08:36:48 +01:00
w1	w1: ds250x: Fix build error without CRC16	2019-10-10 15:35:41 +02:00
watchdog	ACPI: watchdog: Set default timeout in probe	2020-03-21 08:11:48 +01:00
xen	xenbus: req->err should be updated before req->state	2020-03-25 08:25:49 +01:00
zorro	…
Kconfig	…
Makefile	…