posix_acl_clone does a memory allocation and sets a reference count, so
posix_acl_release is needed afterwards to free it.
The problem was fixed using the following semantic patch.
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@@
type T;
identifier E;
expression E1, E2;
int ret;
statement S;
@@
T E;
<+...
(
E = \(posix_acl_clone\|posix_acl_alloc\|posix_acl_dup\)(...);
if (E == NULL) S
|
if ((E = \(posix_acl_clone\|posix_acl_alloc\|posix_acl_dup\)(...)) == NULL) S
)
... when != E2 = E
when strict
(
posix_acl_release(E);
|
E1 = E;
|
+ posix_acl_release(E);
return;
|
+ posix_acl_release(E);
return ret;
)
...+>
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: KaiGai Kohei <kaigai@ak.jp.nec.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>