From: Ian Kent <raven@themaw.net>
Date: Mon, 27 Dec 2010 08:33:15 +0000 (+0800)
Subject: Btrfs: Fix memory leak on finding existing super
X-Git-Tag: Ubuntu-5.13.0-19.19~28681^2~21^2~4
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=bdc924bb4cdac92b945945c3149ab8191c92d75d;p=mirror_ubuntu-jammy-kernel.git

Btrfs: Fix memory leak on finding existing super

We missed a memory deallocation in commit 450ba0ea.

If an existing super block is found at mount and there is no
error condition then the pre-allocated tree_root and fs_info
are no not used and are not freeded.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
---

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 61bd79abb805..f50253c2279d 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -654,6 +654,8 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
 		}
 
 		btrfs_close_devices(fs_devices);
+		kfree(fs_info);
+		kfree(tree_root);
 	} else {
 		char b[BDEVNAME_SIZE];