https://bugs.freedesktop.org/show_bug.cgi?id=104082
--- Comment #29 from Christian König ckoenig.leichtzumerken@gmail.com --- (In reply to Matthew Scheirer from comment #27)
I do still get the swiotlib OOM errors without DC enabled, but they are fairly infrequent and don't panic crash the kernel. With DC enabled, swiotlib OOM messages happen much more often coinciding with crashes.
Thanks and yeah that only means that DC releases the memory later than the classic code path.
So actually not DC related.