[dm-devel] dm-crypt hard lockup

[Bart Van Assche]

On 2020-06-26 02:07, Artur Paszkiewicz wrote:
> I'm getting regular lockups which seem to be caused by dm-crypt. I
> reproduced it on vanilla v5.8-rc2, but I started regularly seeing this
> some time ago on openSUSE Tumbleweed kernels. It's easily reproducible
> (every time, after about a minute) when I run "make -j" on the linux
> kernel sources, sometimes it occurs also when doing other IO intensive
> tasks on multiple CPUs. I'm using LVM and ext4 on dm-crypt devices,
> Intel SSDSC2KW010X6 and SSDSC2BA200G3 SSDs.

Since considerable time I'm doing kernel builds (make -j8) on an
openSUSE Tumbleweed system on top of dm-crypt and an NVMe SSD but I have
not yet encountered any kind of lockup. Maybe another driver, e.g. an
I/O scheduler, is responsible for the lockups?

Bart.