Bug 216353

Summary:	OOM in virt-manager after kernel upgrade from 5.18.13 to 5.18.16 on Fedora 35
Product:	Memory Management	Reporter:	Andrey Ponomarenko (andrei.moscow)
Component:	Other	Assignee:	Andrew Morton (akpm)
Status:	NEEDINFO ---
Severity:	normal
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	5.18.16	Subsystem:
Regression:	No	Bisected commit-id:

Description Andrey Ponomarenko 2022-08-11 07:59:53 UTC

I can't install guest OS in virt-manager due to OOM of virt-manager after upgrade of kernel from 5.18.13 to 5.18.16 on Fedora 35. Reverting back to kernel 5.18.13 fixed the issue.

Tried on this guest: https://download.acronis.com/vstorage/releases/5.0/x86_64/iso/acronis-cyber-infrastructure.iso

Have not tried yet on other guests.

Comment 1 Artem S. Tashkinov 2022-08-11 09:14:48 UTC

No hardware specs, no guest specs, no errors, nothing.

What should kernel developers deduce from this bug report?

Comment 2 Andrey Ponomarenko 2022-08-11 09:46:53 UTC

Host hardware specs: https://linux-hardware.org/?probe=69ebaebf95
Guest specs: 4 CPU, 13G RAM, 2 NIC
Error: guest OOM

Comment 3 Andrey Ponomarenko 2022-08-11 09:48:27 UTC

Not reproduced after reinstalling kernel update to 5.18.16.

Probably this is Fedora update problem or Linux kernel update problem.

Comment 4 Andrey Ponomarenko 2022-08-11 14:11:07 UTC

Reproduced again on 5.18.16.

Error:

[11591.824587] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=user.slice,mems_allowed=0,global_oom,task_memcg=/machine.slice/machine-qemu\x2d2\x2dCyberinfra\x2d5.0.1.scope/libvirt,task=qemu-system-x86,pid=64483,uid=107
[11591.824726] Out of memory: Killed process 64483 (qemu-system-x86) total-vm:18661148kB, anon-rss:12340664kB, file-rss:0kB, shmem-rss:4kB, UID:107 pgtables:26108kB oom_score_adj:0
[11591.827949] Purging GPU memory, 0 pages freed, 0 pages still pinned, 2113 pages left available.
[11591.945383] Purging GPU memory, 0 pages freed, 0 pages still pinned, 2113 pages left available.