https://bugzilla.kernel.org/show_bug.cgi?id=199425
--- Comment #16 from Johannes Hirte (johannes.hirte@datenkhaos.de) --- (In reply to mikita.lipski@amd.com from comment #15)
Lyude Paul fixed this issue, please try his patch:
https://patchwork.kernel.org/patch/10480569/
Thanks
As written in https://bugzilla.kernel.org/show_bug.cgi?id=199425#c13, this patch fix another bug. It doesn't help with this use-after-free. Your patch is still needed.