Re: Hard system lock-ups when using encrypted swap and RAM is exhausted
From: Askar Safin
Date: Thu Dec 11 2025 - 13:24:39 EST
Mikulas Patocka <mpatocka@xxxxxxxxxx>:
> So, this is what happened to you - the machine runs out of memory, it
> needs to swap out some pages, dm-crypt encrypts the pages and generates
> write bios, the write bios are directed to the loop device, the loop
> device directs them to the filesystem, the filesystem attempts to allocate
> more memory => deadlock.
Does similar thing happen in my case? I. e. swap on top of dm-integrity on
top of partition? Is my use case supported? (I'm not talking about
hibernation now, just about swap.)
--
Askar Safin