linux/drivers/usb
Shuah Khan 3ea3091f1b usbip: usbip_host: fix stub_dev lock context imbalance regression
Fix the following sparse context imbalance regression introduced in
a patch that fixed sleeping function called from invalid context bug.

kbuild test robot reported on:

tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git  usb-linus

Regressions in current branch:

drivers/usb/usbip/stub_dev.c:399:9: sparse: sparse: context imbalance in 'stub_probe' - different lock contexts for basic block
drivers/usb/usbip/stub_dev.c:418:13: sparse: sparse: context imbalance in 'stub_disconnect' - different lock contexts for basic block
drivers/usb/usbip/stub_dev.c:464:1-10: second lock on line 476

Error ids grouped by kconfigs:

recent_errors
├── i386-allmodconfig
│   └── drivers-usb-usbip-stub_dev.c:second-lock-on-line
├── x86_64-allmodconfig
│   ├── drivers-usb-usbip-stub_dev.c:sparse:sparse:context-imbalance-in-stub_disconnect-different-lock-contexts-for-basic-block
│   └── drivers-usb-usbip-stub_dev.c:sparse:sparse:context-imbalance-in-stub_probe-different-lock-contexts-for-basic-block
└── x86_64-allyesconfig
    └── drivers-usb-usbip-stub_dev.c:second-lock-on-line

This is a real problem in an error leg where spin_lock() is called on an
already held lock.

Fix the imbalance in stub_probe() and stub_disconnect().

Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Fixes: 0c9e8b3cad ("usbip: usbip_host: fix BUG: sleeping function called from invalid context")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-29 13:26:32 -07:00
..
atm USB: add missing SPDX lines to Kconfig and Makefiles 2019-01-22 09:08:17 +01:00
c67x00 USB: add SPDX identifiers to all remaining Makefiles 2017-11-07 15:53:48 +01:00
chipidea usb: chipidea: msm: get optional clock by devm_clk_get_optional() 2019-04-19 14:24:26 +02:00
class USB: cdc-acm: clean up throttle handling 2019-04-29 16:14:41 +02:00
common usb: introduce usb_ep_type_string() function 2019-05-03 09:13:48 +03:00
core USB: Add LPM quirk for Surface Dock GigE adapter 2019-05-21 10:08:56 +02:00
dwc2 dwc2: gadget: Fix completed transfer size calculation in DDMA 2019-05-03 09:13:49 +03:00
dwc3 drm pull request for 5.2 2019-05-08 21:35:19 -07:00
early drivers: Remove explicit invocations of mmiowb() 2019-04-08 12:01:02 +01:00
gadget usb: gadget: atmel: tie wake lock to running clock 2019-05-03 09:13:49 +03:00
host xhci: Use %zu for printing size_t type 2019-05-22 18:17:16 +02:00
image USB: add missing SPDX lines to Kconfig and Makefiles 2019-01-22 09:08:17 +01:00
isp1760 usb: isp1760-hcd: Fix fall-through annotations 2019-05-01 18:13:52 +02:00
misc USB: rio500: simplify locking 2019-05-21 10:11:14 +02:00
mon USB: add missing SPDX lines to Kconfig and Makefiles 2019-01-22 09:08:17 +01:00
mtu3 usb: mtu3: fix up undefined reference to usb_debug_root 2019-05-21 10:08:56 +02:00
musb usb: musb: dsps: Use dev_get_drvdata() 2019-04-30 17:55:08 +02:00
phy usb: gadget: fsl: fix link error against usb-gadget module 2019-05-03 09:13:47 +03:00
renesas_usbhs USB: renesas_usbhs: fix spelling mistake "doens't" -> "doesn't" 2019-02-19 14:41:38 +01:00
roles usb: roles: Find the muxes by also matching against the device node 2019-02-14 10:52:25 +01:00
serial USB: serial: f81232: implement break control 2019-05-03 09:19:55 +02:00
storage treewide: prefix header search paths with $(srctree)/ 2019-05-18 11:49:57 +09:00
typec usb: typec: ucsi: ccg: fix missing unlock on error in ccg_cmd_write_flash_row() 2019-04-29 14:25:12 +02:00
usbip usbip: usbip_host: fix stub_dev lock context imbalance regression 2019-05-29 13:26:32 -07:00
wusbcore wusb: Remove unnecessary static function ckhdid_printf 2019-03-01 20:53:41 +01:00
Kconfig USB: add missing SPDX lines to Kconfig and Makefiles 2019-01-22 09:08:17 +01:00
Makefile usb: roles: Add Intel xHCI USB role switch driver 2018-03-22 13:49:27 +01:00
usb-skeleton.c usb: usb-skeleton: use irqsave() in USB's complete callback 2018-06-28 19:36:06 +09:00