apply commit 61cc4534b655 ("locking/lockdep: Avoid potential access of invalid memory in lock_class") to linux-5.4-stable

[Greg KH]

On Wed, Mar 16, 2022 at 02:01:12PM +0800, Cheng Jui Wang wrote:
> Hi Reviewers,
> 
> This patch fixes a use-after-free error when /proc/lockdep is read by
> user after a lockdep splat.
> 
> I checked and I think this patch can be applied to stable-5.4 and
> later. 
> 
> commit: 61cc4534b6550997c97a03759ab46b29d44c0017
> Subject: locking/lockdep: Avoid potential access of invalid memory in
> lock_class

I do not see that commit id in Linus's tree, are you sure it is correct?

thanks,

greg k-h