[PATCH] posix_acl: fix reference leaks in posix_acl_create

From: Omar Sandoval
Date: Tue Jan 27 2015 - 01:17:49 EST


get_acl gets a reference which we must release in the error cases.

Signed-off-by: Omar Sandoval <osandov@xxxxxxxxxxx>
---
fs/posix_acl.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/posix_acl.c b/fs/posix_acl.c
index 0855f77..f8f3cc2 100644
--- a/fs/posix_acl.c
+++ b/fs/posix_acl.c
@@ -555,28 +555,31 @@ posix_acl_create(struct inode *dir, umode_t *mode,
p = get_acl(dir, ACL_TYPE_DEFAULT);
if (IS_ERR(p)) {
if (p == ERR_PTR(-EOPNOTSUPP))
goto apply_umask;
return PTR_ERR(p);
}

if (!p)
goto apply_umask;

*acl = posix_acl_clone(p, GFP_NOFS);
- if (!*acl)
+ if (!*acl) {
+ posix_acl_release(p);
return -ENOMEM;
+ }

ret = posix_acl_create_masq(*acl, mode);
if (ret < 0) {
posix_acl_release(*acl);
+ posix_acl_release(p);
return -ENOMEM;
}

if (ret == 0) {
posix_acl_release(*acl);
*acl = NULL;
}

if (!S_ISDIR(*mode)) {
posix_acl_release(p);
*default_acl = NULL;
--
2.2.2

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