From 5474ca7da6f34fa95e82edc747d5faa19cbdfb5c Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Thu, 12 Dec 2019 11:30:03 +0100
Subject: [PATCH] reiserfs: Fix memory leak of journal device string
Git-commit: 5474ca7da6f34fa95e82edc747d5faa19cbdfb5c
Patch-mainline: v5.6-rc1
References: bsc#1163867

When a filesystem is mounted with jdev mount option, we store the
journal device name in an allocated string in superblock. However we
fail to ever free that string. Fix it.

Reported-by: syzbot+1c6756baf4b16b94d2a6@syzkaller.appspotmail.com
Fixes: c3aa077648e1 ("reiserfs: Properly display mount options in /proc/mounts")
Cc: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Acked-by: Jan Kara <jack@suse.cz>

---
 fs/reiserfs/super.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 3244037b1286..d127af64283e 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -629,6 +629,7 @@ static void reiserfs_put_super(struct super_block *s)
 	reiserfs_write_unlock(s);
 	mutex_destroy(&REISERFS_SB(s)->lock);
 	destroy_workqueue(REISERFS_SB(s)->commit_wq);
+	kfree(REISERFS_SB(s)->s_jdev);
 	kfree(s->s_fs_info);
 	s->s_fs_info = NULL;
 }
@@ -2240,6 +2241,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
 			kfree(qf_names[j]);
 	}
 #endif
+	kfree(sbi->s_jdev);
 	kfree(sbi);
 
 	s->s_fs_info = NULL;
-- 
2.16.4