From: Jan Kara jack@suse.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@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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/reiserfs/super.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -599,6 +599,7 @@ 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; } @@ -2208,6 +2209,7 @@ error_unlocked: kfree(qf_names[j]); } #endif + kfree(sbi->s_jdev); kfree(sbi);
s->s_fs_info = NULL;