FS#53650 - [linux] Kernel warning when using nfs server with systemd 233

Attached to Project: Arch Linux
Opened by Ochi (ochi) - Wednesday, 12 April 2017, 10:00 GMT
Last edited by Andreas Radke (AndyRTR) - Tuesday, 01 March 2022, 21:23 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To Tobias Powalowski (tpowa)
Architecture All
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 1
Private No


When using systemd v233, connecting to an nfs server running on the machine running this systemd version causes a kernel warning. Happens at least with kernel 4.10.8 and 4.9.21. This didn't happen with systemd 232. I have described this in more detail here: https://bbs.archlinux.org/viewtopic.php?id=224737

Note that this occurred with package revision -1 and still occurs with -3 (since there was a change to cgroup hybrid mode in this revision, I thought maybe this would help, but it doesn't seem so).
This task depends upon

Closed by  Andreas Radke (AndyRTR)
Tuesday, 01 March 2022, 21:23 GMT
Reason for closing:  Fixed
Additional comments about closing:  Not reproducible
Comment by Dave Reisner (falconindy) - Wednesday, 12 April 2017, 11:16 GMT
If userspace causes the kernel to complain, it's never userspace's fault. This is a bug in the kernel's cgroups implementation.
Comment by Ochi (ochi) - Wednesday, 12 April 2017, 15:12 GMT
Not sure if this is the same problem, but it looks similar: https://www.spinics.net/lists/cgroups/msg16781.html
See also the patch in the follow-up message. However, this patch doesn't seem to be in the kernel (yet?).
Comment by mattia (nTia89) - Monday, 28 February 2022, 16:54 GMT
I cannot reproduce the issue. Is it still valid for you?
Comment by Ochi (ochi) - Tuesday, 01 March 2022, 21:21 GMT
Oh wow, it's been a while. Thanks for asking – I don't see that issue anymore either.