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| author | Heikki Krogerus <heikki.krogerus@linux.intel.com> | 2016-04-27 13:04:20 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-04-27 23:40:02 +0200 |
| commit | 0224a4a30b57385a60065aa598181868881d8fc6 (patch) | |
| tree | d1cc248a6c1f86a23977e18cf35586315f4a0704 /drivers/base/property.c | |
| parent | Linux 4.6-rc5 (diff) | |
| download | linux-0224a4a30b57385a60065aa598181868881d8fc6.tar.xz linux-0224a4a30b57385a60065aa598181868881d8fc6.zip | |
device property: Avoid potential dereferences of invalid pointers
Since fwnode may hold ERR_PTR(-ENODEV) or it may be NULL,
the fwnode type checks is_of_node(), is_acpi_node() and is
is_pset_node() need to consider it. Using IS_ERR_OR_NULL()
to check it.
Fixes: 0d67e0fa1664 (device property: fix for a case of use-after-free)
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
[ rjw: Subject & changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/base/property.c')
| -rw-r--r-- | drivers/base/property.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/property.c b/drivers/base/property.c index 9b1a65debd49..7f692accdc90 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -21,7 +21,7 @@ static inline bool is_pset_node(struct fwnode_handle *fwnode) { - return fwnode && fwnode->type == FWNODE_PDATA; + return !IS_ERR_OR_NULL(fwnode) && fwnode->type == FWNODE_PDATA; } static inline struct property_set *to_pset_node(struct fwnode_handle *fwnode) |