linux-kernel - [PATCH v2] posix_acl: fix reference leaks in posix_acl

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Date:	Sun,  8 Feb 2015 21:45:25 -0800
From:	Omar Sandoval <osandov@...ndov.com>
To:	Alexander Viro <viro@...iv.linux.org.uk>,
	Christoph Hellwig <hch@....de>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	Omar Sandoval <osandov@...ndov.com>
Subject: [PATCH v2] posix_acl: fix reference leaks in posix_acl_create

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

Reviewed-by: Christoph Hellwig <hch@....de>
Signed-off-by: Omar Sandoval <osandov@...ndov.com>
---
Hi, Al,

I'm guessing you're the one to take this one? Just a resend with the
proper format and Christoph's Reviewed-by.

Thanks!

 fs/posix_acl.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/fs/posix_acl.c b/fs/posix_acl.c
index 0855f77..515d315 100644
--- a/fs/posix_acl.c
+++ b/fs/posix_acl.c
@@ -564,13 +564,11 @@ posix_acl_create(struct inode *dir, umode_t *mode,
 
 	*acl = posix_acl_clone(p, GFP_NOFS);
 	if (!*acl)
-		return -ENOMEM;
+		goto no_mem;
 
 	ret = posix_acl_create_masq(*acl, mode);
-	if (ret < 0) {
-		posix_acl_release(*acl);
-		return -ENOMEM;
-	}
+	if (ret < 0)
+		goto no_mem_clone;
 
 	if (ret == 0) {
 		posix_acl_release(*acl);
@@ -591,6 +589,12 @@ no_acl:
 	*default_acl = NULL;
 	*acl = NULL;
 	return 0;
+
+no_mem_clone:
+	posix_acl_release(*acl);
+no_mem:
+	posix_acl_release(p);
+	return -ENOMEM;
 }
 EXPORT_SYMBOL_GPL(posix_acl_create);
 
-- 
2.3.0

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