linux-kernel - [PATCH 3.12 096/123] fuse: initialize fc->release before calling it

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Message-Id: <d79fdabe20f9d9aa7d5e617e222832dcc5dc1c53.1438699154.git.jslaby@suse.cz>
Date:	Tue,  4 Aug 2015 16:40:40 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Miklos Szeredi <mszeredi@...e.cz>,
	Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 096/123] fuse: initialize fc->release before calling it

From: Miklos Szeredi <mszeredi@...e.cz>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 0ad0b3255a08020eaf50e34ef0d6df5bdf5e09ed upstream.

fc->release is called from fuse_conn_put() which was used in the error
cleanup before fc->release was initialized.

[Jeremiah Mahler <jmmahler@...il.com>: assign fc->release after calling
fuse_conn_init(fc) instead of before.]

Signed-off-by: Miklos Szeredi <mszeredi@...e.cz>
Fixes: a325f9b92273 ("fuse: update fuse_conn_init() and separate out fuse_conn_kill()")
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 fs/fuse/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 4937d4b51253..68f12d51dbea 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -1028,6 +1028,7 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
 		goto err_fput;
 
 	fuse_conn_init(fc);
+	fc->release = fuse_free_conn;
 
 	fc->dev = sb->s_dev;
 	fc->sb = sb;
@@ -1042,7 +1043,6 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
 		fc->dont_mask = 1;
 	sb->s_flags |= MS_POSIXACL;
 
-	fc->release = fuse_free_conn;
 	fc->flags = d.flags;
 	fc->user_id = d.user_id;
 	fc->group_id = d.group_id;
-- 
2.5.0

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