Vincent Pelletier 5c6db4afbd usb: gadget: ffs: Forbid usb_ep_alloc_request from sleeping ... commit 30bf90ccdec1da9c8198b161ecbff39ce4e5a9ba upstream. Found using DEBUG_ATOMIC_SLEEP while submitting an AIO read operation: [ 100.853642] BUG: sleeping function called from invalid context at mm/slab.h:421 [ 100.861148] in_atomic(): 1, irqs_disabled(): 1, pid: 1880, name: python [ 100.867954] 2 locks held by python/1880: [ 100.867961] #0: (&epfile->mutex){....}, at: [<f8188627>] ffs_mutex_lock+0x27/0x30 [usb_f_fs] [ 100.868020] #1: (&(&ffs->eps_lock)->rlock){....}, at: [<f818ad4b>] ffs_epfile_io.isra.17+0x24b/0x590 [usb_f_fs] [ 100.868076] CPU: 1 PID: 1880 Comm: python Not tainted 4.14.0-edison+ #118 [ 100.868085] Hardware name: Intel Corporation Merrifield/BODEGA BAY, BIOS 542 2015.01.21:18.19.48 [ 100.868093] Call Trace: [ 100.868122] dump_stack+0x47/0x62 [ 100.868156] ___might_sleep+0xfd/0x110 [ 100.868182] __might_sleep+0x68/0x70 [ 100.868217] kmem_cache_alloc_trace+0x4b/0x200 [ 100.868248] ? dwc3_gadget_ep_alloc_request+0x24/0xe0 [dwc3] [ 100.868302] dwc3_gadget_ep_alloc_request+0x24/0xe0 [dwc3] [ 100.868343] usb_ep_alloc_request+0x16/0xc0 [udc_core] [ 100.868386] ffs_epfile_io.isra.17+0x444/0x590 [usb_f_fs] [ 100.868424] ? _raw_spin_unlock_irqrestore+0x27/0x40 [ 100.868457] ? kiocb_set_cancel_fn+0x57/0x60 [ 100.868477] ? ffs_ep0_poll+0xc0/0xc0 [usb_f_fs] [ 100.868512] ffs_epfile_read_iter+0xfe/0x157 [usb_f_fs] [ 100.868551] ? security_file_permission+0x9c/0xd0 [ 100.868587] ? rw_verify_area+0xac/0x120 [ 100.868633] aio_read+0x9d/0x100 [ 100.868692] ? __fget+0xa2/0xd0 [ 100.868727] ? __might_sleep+0x68/0x70 [ 100.868763] SyS_io_submit+0x471/0x680 [ 100.868878] do_int80_syscall_32+0x4e/0xd0 [ 100.868921] entry_INT80_32+0x2a/0x2a [ 100.868932] EIP: 0xb7fbb676 [ 100.868941] EFLAGS: 00000292 CPU: 1 [ 100.868951] EAX: ffffffda EBX: b7aa2000 ECX: 00000002 EDX: b7af8368 [ 100.868961] ESI: b7fbb660 EDI: b7aab000 EBP: bfb6c658 ESP: bfb6c638 [ 100.868973] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Siqi Lin <siqilin@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2017-12-16 10:33:57 +01:00
..
accessibility
acpi	ACPI / APEI: Add missing synchronize_rcu() on NOTIFY_SCI removal	2017-08-30 10:19:29 +02:00
amba
android	ANDROID: binder: fix proc->tsk check.	2017-08-30 10:19:26 +02:00
ata	libata: drop WARN from protocol error in ata_sff_qc_issue()	2017-12-16 10:33:52 +01:00
atm	atm: horizon: Fix irq release error	2017-12-16 10:33:55 +01:00
auxdisplay
base	isa: Prevent NULL dereference in isa_bus driver callbacks	2017-12-16 10:33:48 +01:00
bcma	bcma: use (get|put)_device when probing/removing device driver	2017-03-12 06:37:30 +01:00
block	zram: set physical queue limits to avoid array out of bounds accesses	2017-12-16 10:33:53 +01:00
bluetooth	Bluetooth: btusb: fix QCA Rome suspend/resume	2017-11-21 09:21:18 +01:00
bus	bus: mbus: fix window size calculation for 4GB windows	2017-10-27 10:23:17 +02:00
cdrom
char	ipmi: Stop timers before cleaning up the module	2017-12-16 10:33:56 +01:00
clk	clk: ti: dra7-atl-clock: fix child-node lookups	2017-11-30 08:37:23 +00:00
clocksource	clockevents/drivers/cs5535: Improve resilience to spurious interrupts	2017-10-27 10:23:17 +02:00
connector
cpufreq	cpufreq: CPPC: add ACPI_PROCESSOR dependency	2017-10-21 17:09:06 +02:00
cpuidle	ARM: cpuidle: Fix error return code	2016-10-16 17:36:15 +02:00
crypto	crypto: s5p-sss - Fix completing crypto request in IRQ handler	2017-12-16 10:33:53 +01:00
dca
devfreq
dio
dma	dmaengine: pl330: fix double lock	2017-12-09 18:42:43 +01:00
dma-buf
edac	EDAC, i5000, i5400: Fix definition of NRECMEMB register	2017-12-16 10:33:54 +01:00
eisa
extcon	extcon: palmas: Check the parent instance to prevent the NULL	2017-11-21 09:21:18 +01:00
firewire	firewire: net: fix fragmented datagram_size off-by-one	2016-11-10 16:36:35 +01:00
firmware	efi: Move some sysfs files to be read-only by root	2017-12-16 10:33:48 +01:00
fmc
fpga
gpio	gpio: altera: Use handle_level_irq when configured as a level_high	2017-12-16 10:33:51 +01:00
gpu	drm/amd/amdgpu: fix console deadlock if late init failed	2017-12-16 10:33:54 +01:00
hid	HID: chicony: Add support for another ASUS Zen AiO keyboard	2017-12-16 10:33:52 +01:00
hsi
hv	Drivers: hv: fcopy: restore correct transfer length	2017-10-12 11:27:33 +02:00
hwmon	hwmon: (gl520sm) Fix overflows and crash seen when writing into limit attributes	2017-10-08 10:14:17 +02:00
hwspinlock
hwtracing	stm class: Fix a use-after-free	2017-10-12 11:27:33 +02:00
i2c	i2c: riic: fix restart condition	2017-12-16 10:33:53 +01:00
ide
idle	intel_idle: Support for Intel Xeon Phi Processor x200 Product Family	2016-09-15 08:27:46 +02:00
iio	iio: light: fix improper return value	2017-11-30 08:37:27 +00:00
infiniband	IB/mlx5: Assign send CQ and recv CQ of UMR QP	2017-12-16 10:33:55 +01:00
input	Input: ims-psu - check if CDC union descriptor is sane	2017-11-18 11:11:05 +01:00
iommu	iommu/vt-d: Fix scatterlist offset handling	2017-12-16 10:33:49 +01:00
ipack
irqchip	irqchip/crossbar: Fix incorrect type of register size	2017-12-16 10:33:52 +01:00
isdn	isdn/i4l: fetch the ppp_write buffer in one shot	2017-10-21 17:09:02 +02:00
leds	leds: ktd2692: avoid harmless maybe-uninitialized warning	2017-05-14 13:32:55 +02:00
lguest
lightnvm	lightnvm: put bio before return	2016-09-24 10:07:35 +02:00
macintosh
mailbox	mailbox: handle empty message in tx_tick	2017-08-06 19:19:41 -07:00
mcb	mcb: Fixed bar number assignment for the gdd	2016-06-01 12:15:53 -07:00
md	bcache: recover data from backing when data is clean	2017-12-09 18:42:37 +01:00
media	media: dvb: i2c transfers over usb cannot be done from stack	2017-12-16 10:33:49 +01:00
memory	ARM: OMAP2+: gpmc-onenand: propagate error on initialization failure	2017-12-16 10:33:51 +01:00
memstick	memstick: rtsx_usb_ms: Manage runtime PM when accessing the device	2016-10-28 03:01:35 -04:00
message
mfd	mfd: axp20x: Fix axp288 PEK_DBR and PEK_DBF irqs being swapped	2017-11-08 10:06:29 +01:00
misc	eeprom: at24: check at24_read/write arguments	2017-12-05 11:22:51 +01:00
mmc	mmc: core: Do not leave the block driver in a suspended state	2017-12-05 11:22:51 +01:00
mtd	mtd: nand: Fix writing mtdoops to nand flash.	2017-12-05 11:22:51 +01:00
net	ipvlan: fix ipv6 outbound device	2017-12-16 10:33:56 +01:00
nfc	nfc: fdp: fix NULL pointer dereference	2017-08-06 19:19:40 -07:00
ntb	ntb_transport: fix bug calculating num_qps_mw	2017-08-30 10:19:29 +02:00
nubus
nvdimm	libnvdimm, namespace: make 'resource' attribute only readable by root	2017-11-30 08:37:23 +00:00
nvme	nvme: Fix memory order on async queue deletion	2017-11-24 08:32:25 +01:00
nvmem	nvmem: imx-ocotp: Fix wrong register size	2017-08-06 19:19:46 -07:00
of	of: device: Export of_device_{get_modalias, uvent_modalias} to modules	2017-07-27 15:06:09 -07:00
oprofile
parisc	parisc: pci memory bar assignment fails with 64bit kernels on dino/cujo	2017-08-24 17:02:35 -07:00
parport	parisc, parport_gsc: Fixes for printk continuation lines	2017-06-17 06:39:37 +02:00
pci	PCI: Apply _HPX settings only to relevant devices	2017-11-30 08:37:26 +00:00
pcmcia
perf	drivers/perf: arm_pmu: Fix leak in error path	2016-10-07 15:23:41 +02:00
phy	phy: qcom-usb-hs: Add depends on EXTCON	2017-05-14 13:32:57 +02:00
pinctrl	pinctrl: samsung: Remove bogus irq_[un]mask from resource management	2017-08-16 13:40:30 -07:00
platform	platform/x86: hp-wmi: Do not shadow error values	2017-11-15 17:13:11 +01:00
pnp	PNP: Add Broadwell to Intel MCH size workaround	2016-08-16 09:30:48 +02:00
power	power: supply: bq24190_charger: Handle fault before status on interrupt	2017-05-14 13:32:54 +02:00
powercap
pps	pps: do not crash when failed to register	2016-08-10 11:49:25 +02:00
ps3
ptp
pwm	pwm: pca9685: Fix period change with same duty cycle	2017-03-15 09:57:14 +08:00
rapidio
ras
regulator	regulator: fan53555: fix I2C device ids	2017-11-02 09:40:50 +01:00
remoteproc	remoteproc: Fix potential race condition in rproc_add	2016-08-20 18:09:20 +02:00
reset
rpmsg
rtc	rtc: tegra: Implement clock handling	2017-04-21 09:30:07 +02:00
s390	s390/qeth: issue STARTLAN as first IPA command	2017-11-15 17:13:11 +01:00
sbus
scsi	scsi: lpfc: Fix crash during Hardware error recovery on SLI3 adapters	2017-12-16 10:33:52 +01:00
sfi
sh
sn
soc	soc: qcom/spm: shut up uninitialized variable warning	2016-09-24 10:07:42 +02:00
spi	Revert "spi: SPI_FSL_DSPI should depend on HAS_DMA"	2017-12-16 10:33:50 +01:00
spmi	spmi: Include OF based modalias in device uevent	2017-07-27 15:06:10 -07:00
ssb	ssb: Fix error routine when fallback SPROM fails	2017-01-09 08:07:42 +01:00
staging	mm: avoid returning VM_FAULT_RETRY from ->page_mkwrite handlers	2017-12-09 18:42:43 +01:00
target	target: Fix QUEUE_FULL + SCSI task attribute handling	2017-11-30 08:37:22 +00:00
tc
thermal	thermal: cpu_cooling: Avoid accessing potentially freed structures	2017-07-27 15:06:02 -07:00
thunderbolt	thunderbolt: Fix double free of drom buffer	2016-06-01 12:15:53 -07:00
tty	sysrq : fix Show Regs call trace on ARM	2017-12-09 18:42:40 +01:00
uio	uio: fix dmem_region_start computation	2016-10-31 04:13:59 -06:00
usb	usb: gadget: ffs: Forbid usb_ep_alloc_request from sleeping	2017-12-16 10:33:57 +01:00
uwb	uwb: ensure that endpoint is interrupt	2017-10-12 11:27:35 +02:00
vfio	vfio-pci: Handle error from pci_iomap	2017-08-06 19:19:46 -07:00
vhost	fix a page leak in vhost_scsi_iov_to_sgl() error recovery	2017-11-30 08:37:22 +00:00
video	backlight: adp5520: Fix error handling in adp5520_bl_probe()	2017-11-21 09:21:21 +01:00
virt
virtio	virtio: release virtio index when fail to device_register	2017-12-16 10:33:48 +01:00
vlynq
vme	vme: Fix wrong pointer utilization in ca91cx42_slave_get	2017-01-19 20:17:21 +01:00
w1	w1: ds2490: USB transfer buffers need to be DMAable	2017-03-12 06:37:29 +01:00
watchdog	watchdog: kempld: fix gcc-4.3 build	2017-10-21 17:09:04 +02:00
xen	xen: xenbus driver must not accept invalid transaction ids	2017-11-30 08:37:28 +00:00
zorro
Kconfig
Makefile	usb: Make sure usb/phy/of gets built-in	2017-05-20 14:26:59 +02:00