device property: fix for a case of use-after-free

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In device_remove_property_set(), the secondary fwnode needs
to be cleared before the pset is freed. This fixes a
use-after-free when a property set is providing the primary
fwnode.

As a result of the fix, the primary fwnode may end up
containing ERR_PTR(-ENODEV), so also adding checks for it to
the property handling code.

Reported-by: John Youn <John.Youn@synopsys.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Heikki Krogerus 2016-03-10 13:03:18 +02:00 • committed by Rafael J. Wysocki

parent 7781203416

commit 0d67e0fa16

1 changed files with 17 additions and 8 deletions

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drivers/base/property.c

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