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#
# NFC sybsystem configuration
#

menuconfig NFC
	depends on NET
	depends on RFKILL || !RFKILL
	tristate "NFC subsystem support"
	default n
	help
	  Say Y here if you want to build support for NFC (Near field
	  communication) devices.

	  To compile this support as a module, choose M here: the module will
	  be called nfc.

config NFC_DIGITAL
	depends on NFC
	select CRC_CCITT
	select CRC_ITU_T
	tristate "NFC Digital Protocol stack support"
	default n
	help
	  Say Y if you want to build NFC digital protocol stack support.
	  This is needed by NFC chipsets whose firmware only implement
	  the NFC analog layer.

	  To compile this support as a module, choose M here: the module will
	  be called nfc_digital.

source "net/nfc/nci/Kconfig"
source "net/nfc/hci/Kconfig"

source "drivers/nfc/Kconfig"
49d50a6d69d1d6feb4a'>patch) tree75f65eba7eac9277971082a2d5a4cf1370562c0c /tools/testing/selftests/filesystems parent7ce7d89f48834cefece7804d38fc5d85382edf77 (diff)
cgroup: don't online subsystems before cgroup_name/path() are operational
While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems before the new cgroup is associated with it kernfs_node. This is fine for cgroup proper but cgroup_name/path() depend on the associated kernfs_node and if a subsystem makes the new cgroup_subsys_state visible, which they're allowed to after onlining, it can lead to NULL dereference. The current code performs cgroup creation and subsystem onlining in cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems visible afterwards. There's no reason to online the subsystems early and we can simply drop cgroup_apply_control_enable() call from cgroup_create() so that the subsystems are onlined and made visible at the same time. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") Cc: stable@vger.kernel.org # v4.6+
Diffstat (limited to 'tools/testing/selftests/filesystems')