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Message-Id: <20200203161914.658593167@linuxfoundation.org>
Date: Mon, 3 Feb 2020 16:19:26 +0000
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
syzbot+1c6756baf4b16b94d2a6@...kaller.appspotmail.com,
Jan Kara <jack@...e.cz>
Subject: [PATCH 4.19 14/70] reiserfs: Fix memory leak of journal device string
From: Jan Kara <jack@...e.cz>
commit 5474ca7da6f34fa95e82edc747d5faa19cbdfb5c upstream.
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@...kaller.appspotmail.com
Fixes: c3aa077648e1 ("reiserfs: Properly display mount options in /proc/mounts")
CC: stable@...r.kernel.org
Signed-off-by: Jan Kara <jack@...e.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
fs/reiserfs/super.c | 2 ++
1 file changed, 2 insertions(+)
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -629,6 +629,7 @@ static void reiserfs_put_super(struct su
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;
}
@@ -2243,6 +2244,7 @@ error_unlocked:
kfree(qf_names[j]);
}
#endif
+ kfree(sbi->s_jdev);
kfree(sbi);
s->s_fs_info = NULL;
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