Dan Williams 8dd114ef78 device-dax: fix cdev leak ... commit ed01e50acd upstream. If device_add() fails, cleanup the cdev. Otherwise, we leak a kobj_map() with a stale device number. As Jason points out, there is a small possibility that userspace has opened and mapped the device in the time between cdev_add() and the device_add() failure. We need a new kill_dax_dev() helper to invalidate any established mappings. Fixes: ba09c01d2f ("dax: convert to the cdev api") Reported-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2017-05-20 14:28:41 +02:00
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Kconfig	device-dax: switch to srcu, fix rcu_read_lock() vs pte allocation	2017-04-27 09:10:39 +02:00
Makefile	…
dax.c	device-dax: fix cdev leak	2017-05-20 14:28:41 +02:00
dax.h	dax: convert devm_create_dax_dev to PTR_ERR	2016-10-07 16:45:59 -07:00
pmem.c	device-dax: check devm_nsio_enable() return value	2016-10-28 14:35:25 -07:00