Yasuaki Ishimatsu a37f86305c driver core: Release device_hotplug_lock when store_mem_state returns EINVAL ...

When inserting a wrong value to /sys/devices/system/memory/memoryX/state file,
following messages are shown. And device_hotplug_lock is never released.

================================================
[ BUG: lock held when returning to user space! ]
3.12.0-rc4-debug+ #3 Tainted: G        W
------------------------------------------------
bash/6442 is leaving the kernel with locks still held!
1 lock held by bash/6442:
 #0:  (device_hotplug_lock){+.+.+.}, at: [<ffffffff8146cbb5>] lock_device_hotplug_sysfs+0x15/0x50

This issue was introdued by commit fa2be40 (drivers: base: use standard
device online/offline for state change).

This patch releases device_hotplug_lcok when store_mem_state returns EINVAL.

Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Reviewed-by: Toshi Kani <toshi.kani@hp.com>
CC: Seth Jennings <sjenning@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2013-10-16 18:42:41 -07:00

..

power

ACPI and power management updates for 3.12-rc1

2013-09-03 15:59:39 -07:00

regmap

Driver core patches for 3.12-rc1

2013-09-03 11:37:15 -07:00

attribute_container.c

drivers: avoid format string in dev_set_name

2013-07-03 16:07:41 -07:00

base.h

driver core: bus_type: add drv_groups

2013-08-12 15:33:31 -07:00

bus.c

driver core: add #include <linux/sysfs.h> to core files.

2013-08-27 10:24:15 -07:00

class.c

sysfs.h: remove attr_name() macro

2013-08-22 10:25:34 -07:00

core.c

driver core : Fix use after free of dev->parent in device_shutdown

2013-09-26 14:46:11 -07:00

cpu.c

ACPI and power management updates for 3.12-rc1

2013-09-03 15:59:39 -07:00

dd.c

PM / Runtime: Idle devices asynchronously after probe|release

2013-04-11 12:42:52 -07:00

devres.c

Linux 3.9-rc3

2013-03-17 19:40:50 -07:00

devtmpfs.c

driver core: handle user namespaces properly with the uid/gid devtmpfs change

2013-04-11 11:43:29 -07:00

dma-buf.c

dma-buf: Expose buffer size to userspace (v2)

2013-09-10 11:36:45 +05:30

dma-coherent.c

drivers: dma-coherent: Fix typo in dma_mmap_from_coherent documentation

2012-10-23 14:05:32 +02:00

dma-contiguous.c

drivers: dma-contiguous: clean source code and prepare for device tree

2013-08-27 09:18:29 +02:00

dma-mapping.c

[media] dma-mapping: fix dma_common_get_sgtable() conditional compilation

2012-11-27 09:42:31 -02:00

driver.c

driver core: add #include <linux/sysfs.h> to core files.

2013-08-27 10:24:15 -07:00

firmware_class.c

firmware loader: fix pending_fw_head list corruption

2013-08-30 12:04:27 -07:00

firmware.c

firmware: change firmware_kset to firmware_kobj

2008-01-24 20:40:23 -08:00

hypervisor.c

drivers/base: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required.

2011-10-31 19:31:38 -04:00

init.c

driver-core: implement 'sysdev' functionality for regular devices and buses

2011-12-14 14:29:38 -08:00

isa.c

dma-mapping: replace all DMA_24BIT_MASK macro with DMA_BIT_MASK(24)

2009-04-07 08:31:12 -07:00

Kconfig

Merge remote-tracking branch 'dma-public/for-v3.12-cma-dma' into for-next

2013-07-15 11:13:54 +02:00

Makefile

Merge remote-tracking branch 'origin/next' into kvm-ppc-next

2013-08-29 00:41:59 +02:00

map.c

[PATCH] kobj_map semaphore to mutex conversion

2006-03-20 13:42:58 -08:00

memory.c

driver core: Release device_hotplug_lock when store_mem_state returns EINVAL

2013-10-16 18:42:41 -07:00

module.c

driver core: module.c: Use kasprintf

2010-05-21 09:37:29 -07:00

node.c

thp: account anon transparent huge pages into NR_ANON_PAGES

2013-09-12 15:38:03 -07:00

pinctrl.c

drivers: pinctrl sleep and idle states in the core

2013-06-16 11:56:52 +02:00

platform.c

driver-core: platform: convert bus code to use dev_groups

2013-08-23 14:43:44 -07:00

reservation.c

reservation: cross-device reservation support, v4

2013-06-28 12:02:15 +10:00

soc.c

mode_t whack-a-mole: ->is_visible() returns umode_t...

2012-05-29 23:28:42 -04:00

syscore.c

PM: Reintroduce dropped call to check_wakeup_irqs

2011-07-11 10:51:49 +02:00

topology.c

cpu topology: remove stale arch_provides_topology_pointers and define_siblings_show_map/list()

2013-07-29 13:12:45 -07:00

transport_class.c

drivers/base: transport_class explicitly requires EXPORT_SYMBOL

2011-10-31 19:31:15 -04:00