Add handling of possible allocation failure.
Reported by smatch:
drivers/staging/gasket/gasket_sysfs.c:105 put_mapping() error: potential null dereference 'files_to_remove'. (kcalloc returns null)
Signed-off-by: Ivan Bornyakov <brnkv.i1@xxxxxxxxx>
---
drivers/staging/gasket/gasket_sysfs.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/staging/gasket/gasket_sysfs.c b/drivers/staging/gasket/gasket_sysfs.c
index a4bfca43cd03..56d62aea5111 100644
--- a/drivers/staging/gasket/gasket_sysfs.c
+++ b/drivers/staging/gasket/gasket_sysfs.c
@@ -101,6 +101,11 @@ static void put_mapping(struct gasket_sysfs_mapping *mapping)
files_to_remove = kcalloc(num_files_to_remove,
sizeof(*files_to_remove),
GFP_KERNEL);
+ if (!files_to_remove) {
+ mutex_unlock(&mapping->mutex);
+ return;
+ }
+
for (i = 0; i < num_files_to_remove; i++)
files_to_remove[i] = mapping->attributes[i].attr;
--
2.16.4
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