Oliver Neukum d5559f43d7 usb: core: hcd: fix possible deadlock in rh control transfers ...

>From within the SCSI error handler memory allocations must not
trigger IO. Handling errors in UAS and the storage driver may
involve resetting a device. The thread doing the reset itself
relies on VM magic. However, that is insufficient, as resetting
a device involves resuming it. Resumption as well as resetting
involves conrol transfers to the parent of the device to be reset.
That may be a root hub. Hence usbcore must heed the flags passed
to usb_submit_urb() processing control transfers to root hubs.

The problem exist since the storage driver has been merged.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://patch.msgid.link/20260429094413.181038-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2026-05-22 11:34:24 +02:00

..

buffer.c

Merge tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-06-28 10:28:11 -07:00

config.c

usb: core: config: reverse the size check of the SSP isoc endpoint descriptor

2026-04-07 13:48:13 +02:00

devices.c

USB: Remove remnants of Wireless USB and UWB

2023-08-09 14:17:06 +02:00

devio.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

driver.c

usb: core: use dedicated spinlock for offload state

2026-04-02 09:43:26 +02:00

endpoint.c

usb: endpoint: drop custom sysfs attribute structure

2026-03-11 15:48:20 +01:00

file.c

USB: make usb class a const structure

2023-07-25 17:49:30 +02:00

generic.c

USB: lower "Device is not authorized for usage" message to info

2025-08-13 16:55:27 +02:00

hcd-pci.c

usb: core: modify comments xhci_hc_driver has HCD_MEMORY just like ehci ohci

2025-06-19 12:31:16 +02:00

hcd.c

usb: core: hcd: fix possible deadlock in rh control transfers

2026-05-22 11:34:24 +02:00

hub.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

hub.h

usb: hub: Fix flushing of delayed work used for post resume purposes

2025-06-30 15:36:00 +02:00

Kconfig

usb: core: Kconfig: Improve USB authorization mode help

2024-02-17 16:38:35 +01:00

ledtrig-usbport.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

Makefile

usb: core: Add tracepoints for device allocation and state changes

2025-10-22 10:58:30 +02:00

message.c

USB: core: Use krealloc() in usb_cache_string()

2026-03-18 16:03:52 +01:00

notify.c

USB: core: Remove usbfs_mutex

2019-06-26 10:28:09 +08:00

of.c

USB: of: Simplify with scoped for each OF child loop

2026-04-07 13:49:48 +02:00

offload.c

usb: core: use dedicated spinlock for offload state

2026-04-02 09:43:26 +02:00

otg_productlist.h

USB: OTG: rename product list of devices

2020-06-19 08:58:55 +02:00

phy.c

usb: core: phy: avoid double use of 'usb3-phy'

2026-04-02 09:19:31 +02:00

phy.h

usb: core: add phy notify connect and disconnect

2024-01-27 17:36:14 -08:00

port.c

usb: port: add delay after usb_hub_set_port_power()

2026-03-18 16:03:58 +01:00

quirks.c

USB: core: add NO_LPM quirk for Razer Kiyo Pro webcam

2026-04-02 09:30:44 +02:00

sysfs.c

sysfs: treewide: switch back to attribute_group::bin_attrs

2025-06-17 10:44:15 +02:00

trace.c

usb: core: Add tracepoints for device allocation and state changes

2025-10-22 10:58:30 +02:00

trace.h

usb: core: Add tracepoints for device allocation and state changes

2025-10-22 10:58:30 +02:00

urb.c

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21 01:02:28 -08:00

usb-acpi.c

usb: acpi: fix device link removal

2025-06-19 12:36:19 +02:00

usb.c

usb: core: use dedicated spinlock for offload state

2026-04-02 09:43:26 +02:00

usb.h

USB: make to_usb_device_driver() use container_of_const()

2024-11-14 17:57:33 +01:00