Harald Freudenberger 29c2680fd2 s390/ap: fix ap devices reference counting ... With the last rework of the AP bus scan function one get_device() is missing causing the reference counter to be one instance too low. Together with binding/unbinding device drivers to an ap device it may end up in an segfault because the ap device is freed but a device driver still assumes it's pointer to the ap device is valid: Unable to handle kernel pointer dereference in virtual kernel address space Failing address: 6b6b6b6b6b6b6000 TEID: 6b6b6b6b6b6b6803 Fault in home space mode while using kernel ASCE. Krnl PSW : 0404e00180000000 000000001472f3b6 (klist_next+0x7e/0x180) R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 RI:0 EA:3 Call Trace: [<000000001472f3b6>] klist_next+0x7e/0x180 ([<000000001472f36a>] klist_next+0x32/0x180) [<00000000147c14de>] bus_for_each_dev+0x66/0xb8 [<0000000014aab0d4>] ap_scan_adapter+0xcc/0x6c0 [<0000000014aab74a>] ap_scan_bus+0x82/0x140 [<0000000013f3b654>] process_one_work+0x27c/0x478 [<0000000013f3b8b6>] worker_thread+0x66/0x368 [<0000000013f44e32>] kthread+0x17a/0x1a0 [<0000000014af23e4>] ret_from_fork+0x24/0x2c Kernel panic - not syncing: Fatal exception: panic_on_oops Fixed by adjusting the reference count with get_device() on the right place. Also now the device drivers don't need to adjust the ap device's reference counting any more. This is now done in the ap bus probe and remove functions. Reported-by: Marc Hartmayer <mhartmay@linux.ibm.com> Fixes: 4f2fcccdb5 ("s390/ap: add card/queue deconfig state") Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>		2020-11-03 15:12:15 +01:00
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accessibility	…
acpi	Merge branches 'acpi-button' and 'acpi-dock'	2020-10-30 16:31:20 +01:00
amba	…
android	task_work: cleanup notification modes	2020-10-17 15:05:30 -06:00
ata	libata-5.10-2020-10-30	2020-10-30 14:51:01 -07:00
atm	…
auxdisplay	…
base	device property: Don't clear secondary pointer for shared primary firmware node	2020-10-27 19:20:03 +01:00
bcma	…
block	xsysace: use platform_get_resource() and platform_get_irq_optional()	2020-10-29 08:22:33 -06:00
bluetooth	Bluetooth: btintel: Replace zero-length array with flexible-array member	2020-10-30 16:57:41 -05:00
bus	ARM: SoC-related driver updates	2020-10-24 10:39:22 -07:00
cdrom	…
char	random32: make prandom_u32() output unpredictable	2020-10-24 20:21:57 +02:00
clk	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
clocksource	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
connector	…
counter	…
cpufreq	cpufreq: Introduce cpufreq_driver_test_flags()	2020-10-29 14:07:30 +01:00
cpuidle	powerpc updates for 5.10	2020-10-16 12:21:15 -07:00
crypto	s390 updates for the 5.10 merge window	2020-10-16 12:36:38 -07:00
dax	fuse update for 5.10	2020-10-19 14:28:30 -07:00
dca	…
devfreq	…
dio	…
dma	misc: mic: remove the MIC drivers	2020-10-28 19:12:03 +01:00
dma-buf	dma-mapping updates for 5.10	2020-10-15 14:43:29 -07:00
edac	EFI changes for v5.10:	2020-10-12 13:26:49 -07:00
eisa	…
extcon	…
firewire	…
firmware	ARM SCMI fixes for v5.10	2020-10-26 12:40:02 +01:00
fpga	…
fsi	…
gnss	…
gpio	- New Drivers	2020-10-14 15:56:58 -07:00
gpu	- Fix max memory region size calculation (Matt)	2020-10-30 11:54:11 +10:00
greybus	…
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2020-10-23 16:16:31 -07:00
hsi	…
hv	Merge branch 'akpm' (patches from Andrew)	2020-10-16 11:31:55 -07:00
hwmon	ARM: SoC platform updates	2020-10-24 10:33:08 -07:00
hwspinlock	…
hwtracing	coresight: cti: Initialize dynamic sysfs attributes	2020-10-29 20:10:25 +01:00
i2c	i2c: core: Restore acpi_walk_dep_device_list() getting called after registering the ACPI i2c devs	2020-10-25 13:33:54 +01:00
i3c	* Fix DAA for the pre-reserved address case	2020-10-17 11:01:01 -07:00
ide	block-5.10-2020-10-12	2020-10-13 12:12:44 -07:00
idle	intel_idle: Fix max_cstate for processor models without C-state tables	2020-10-27 19:03:53 +01:00
iio	chrome platform changes for 5.10	2020-10-23 10:54:13 -07:00
infiniband	RDMA/qedr: Fix memory leak in iWARP CM	2020-10-28 09:45:25 -03:00
input	Merge branch 'parisc-5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux	2020-10-25 10:59:34 -07:00
interconnect	interconnect: qcom: use icc_sync state for sm8[12]50	2020-10-27 16:01:22 +02:00
iommu	IOMMU Fix for Linux v5.10:	2020-10-20 09:35:06 -07:00
ipack	…
irqchip	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
isdn	…
leds	leds: pwm: Remove platform_data support	2020-10-07 12:02:58 +02:00
lightnvm	lightnvm: fix out-of-bounds write to array devices->info[]	2020-10-16 09:28:45 -06:00
macintosh	powerpc updates for 5.10	2020-10-16 12:21:15 -07:00
mailbox	ARM: SoC-related driver updates	2020-10-24 10:39:22 -07:00
mcb	…
md	- Improve DM core's bio splitting to use blk_max_size_offset(). Also	2020-10-14 15:05:38 -07:00
media	dma-mapping updates for 5.10	2020-10-15 14:43:29 -07:00
memory	ARM: SoC-related driver updates	2020-10-24 10:39:22 -07:00
memstick	…
message	scsi: mptfusion: Fix null pointer dereferences in mptscsih_remove()	2020-10-26 16:57:18 -04:00
mfd	- New Drivers	2020-10-14 15:56:58 -07:00
misc	Char/Misc fixes/removals for 5.10-rc2	2020-11-01 10:05:16 -08:00
mmc	MMC host:	2020-10-30 11:04:11 -07:00
most	…
mtd	This pull request contains fixes for UBI and UBIFS	2020-10-18 09:56:50 -07:00
mux	…
net	flexible-array member conversion patches for 5.10-rc2	2020-10-31 14:31:28 -07:00
nfc	nfc: remove unneeded break	2020-10-20 10:36:41 -07:00
ntb	Bug fixes for v5.10	2020-10-25 11:12:31 -07:00
nubus	…
nvdimm	mm/memremap_pages: support multiple ranges per invocation	2020-10-13 18:38:28 -07:00
nvme	block-5.10-2020-10-30	2020-10-30 15:02:49 -07:00
nvmem	…
of	dma-mapping: fix 32-bit overflow with CONFIG_ARM_LPAE=n	2020-10-29 16:59:34 +01:00
opp	Merge branch 'cpufreq/arm/linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm	2020-10-06 12:26:45 +02:00
oprofile	…
parisc	dma-mapping: split <linux/dma-mapping.h>	2020-10-06 07:07:03 +02:00
parport	…
pci	VFIO updates for v5.10-rc1	2020-10-22 13:00:44 -07:00
pcmcia	…
perf	…
phy	pci-v5.10-changes	2020-10-22 12:41:00 -07:00
pinctrl	Pin control bulk changes for the v5.10 kernel cycle	2020-10-14 15:25:04 -07:00
platform	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2020-10-23 16:16:31 -07:00
pnp	PNP: fix kernel-doc markups	2020-10-27 19:23:04 +01:00
power	ARM: SoC platform updates	2020-10-24 10:33:08 -07:00
powercap	powercap: Fix typo in Kconfig "Plance" -> "Plane"	2020-10-19 17:40:53 +02:00
pps	…
ps3	…
ptp	…
pwm	ARM: SoC platform updates	2020-10-24 10:33:08 -07:00
rapidio	rapidio: fix the missed put_device() for rio_mport_add_riodev	2020-10-16 11:11:22 -07:00
ras	…
regulator	Merge remote-tracking branch 'regulator/for-5.10' into regulator-next	2020-10-05 16:54:56 +01:00
remoteproc	remoteproc updates for v5.10	2020-10-22 12:56:33 -07:00
reset	ARM: SoC-related driver updates	2020-10-24 10:39:22 -07:00
rpmsg	rpmsg updates for 5.10	2020-10-22 12:58:21 -07:00
rtc	RTC for 5.10	2020-10-21 11:22:08 -07:00
s390	s390/ap: fix ap devices reference counting	2020-11-03 15:12:15 +01:00
sbus	…
scsi	SCSI fixes on 20201030	2020-10-31 12:21:04 -07:00
sfi	…
sh	…
siox	…
slimbus	…
soc	soc: ti: ti_sci_pm_domains: check for proper args count in xlate	2020-10-29 22:13:38 +01:00
soundwire	…
spi	ARM: SoC platform updates	2020-10-24 10:33:08 -07:00
spmi	…
ssb	…
staging	staging: fieldbus: anybuss: jump to correct label in an error path	2020-10-27 13:24:51 +01:00
target	scsi: target: tcmu: Replace zero-length array with flexible-array member	2020-10-29 17:22:59 -05:00
tc	…
tee	Reenable kernel login method for kernel TEE client API	2020-10-26 10:55:56 +01:00
thermal	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
thunderbolt	…
tty	vt_ioctl: fix GIO_UNIMAP regression	2020-10-28 13:41:17 +01:00
uio	…
usb	4 bug fixes for Cadence 3 driver.	2020-10-30 11:46:49 +01:00
vdpa	vhost,vdpa: fixes	2020-10-31 14:41:48 -07:00
vfio	VFIO updates for v5.10-rc1	2020-10-22 13:00:44 -07:00
vhost	vdpa: handle irq bypass register failure case	2020-10-30 04:02:53 -04:00
video	A couple of x86 fixes which missed rc1 due to my stupidity:	2020-10-27 14:39:29 -07:00
virt	virt: vbox: simplify the return expression of vbg_input_open()	2020-10-02 11:36:13 +02:00
virtio	vhost,vdpa,virtio: cleanups, fixes	2020-10-23 11:00:57 -07:00
visorbus	…
vlynq	…
vme	…
w1	w1: w1_therm: make w1_poll_completion static	2020-10-05 14:49:24 +02:00
watchdog	ARM: SoC platform updates	2020-10-24 10:33:08 -07:00
xen	xen: branch for v5.10-rc1c	2020-10-25 10:55:35 -07:00
zorro	…
Kconfig	…
Makefile	…