releases/5.9.5/ubifs-mount_ubifs-release-authentication-resource-in-error-handling-path.patch

From e2a05cc7f8229e150243cdae40f2af9021d67a4a Mon Sep 17 00:00:00 2001
From: Zhihao Cheng <chengzhihao1@huawei.com>
Date: Tue, 29 Sep 2020 20:45:31 +0800
Subject: ubifs: mount_ubifs: Release authentication resource in error handling path

From: Zhihao Cheng <chengzhihao1@huawei.com>

commit e2a05cc7f8229e150243cdae40f2af9021d67a4a upstream.

Release the authentication related resource in some error handling
branches in mount_ubifs().

Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Cc: <stable@vger.kernel.org>  # 4.20+
Fixes: d8a22773a12c6d7 ("ubifs: Enable authentication support")
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/ubifs/super.c |   10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1331,7 +1331,7 @@ static int mount_ubifs(struct ubifs_info
 
 	err = ubifs_read_superblock(c);
 	if (err)
-		goto out_free;
+		goto out_auth;
 
 	c->probing = 0;
 
@@ -1343,18 +1343,18 @@ static int mount_ubifs(struct ubifs_info
 		ubifs_err(c, "'compressor \"%s\" is not compiled in",
 			  ubifs_compr_name(c, c->default_compr));
 		err = -ENOTSUPP;
-		goto out_free;
+		goto out_auth;
 	}
 
 	err = init_constants_sb(c);
 	if (err)
-		goto out_free;
+		goto out_auth;
 
 	sz = ALIGN(c->max_idx_node_sz, c->min_io_size) * 2;
 	c->cbuf = kmalloc(sz, GFP_NOFS);
 	if (!c->cbuf) {
 		err = -ENOMEM;
-		goto out_free;
+		goto out_auth;
 	}
 
 	err = alloc_wbufs(c);
@@ -1629,6 +1629,8 @@ out_wbufs:
 	free_wbufs(c);
 out_cbuf:
 	kfree(c->cbuf);
+out_auth:
+	ubifs_exit_authentication(c);
 out_free:
 	kfree(c->write_reserve_buf);
 	kfree(c->bu.buf);