From: Stephen Hemminger <stephen@networkplumber.org>
To: netdev@vger.kernel.org
Subject: Fw: [Bug 220649] New: A bug is happening at __dev_change_net_namespace when runnning LXC/Incus service in 6.17
Date: Wed, 15 Oct 2025 15:02:38 -0700 [thread overview]
Message-ID: <20251015150238.6849de11@hermes.local> (raw)
Begin forwarded message:
Date: Thu, 09 Oct 2025 13:08:57 +0000
From: bugzilla-daemon@kernel.org
To: stephen@networkplumber.org
Subject: [Bug 220649] New: A bug is happening at __dev_change_net_namespace when runnning LXC/Incus service in 6.17
https://bugzilla.kernel.org/show_bug.cgi?id=220649
Bug ID: 220649
Summary: A bug is happening at __dev_change_net_namespace when
runnning LXC/Incus service in 6.17
Product: Networking
Version: 2.5
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: Other
Assignee: stephen@networkplumber.org
Reporter: kosmx.mc@gmail.com
Regression: No
Created attachment 308780
--> https://bugzilla.kernel.org/attachment.cgi?id=308780&action=edit
Archive containing the dmesg slice with stack trace, and the git bisect log
Log from kernel dmesg is attached.
Steps to Reproduce in a Libvirt/QEMU VM:
1) Install ArchLinux (all dependencies are available). I recommend using
archinstall, but anything can go
2) Install LXC/Incus (pacman -S incus)
3) configure incus for running: usermod -v 1000000-1000999999 -w
1000000-1000999999 root &&
incus admin init &&
incus launch images:debian/12 first
4) Previous step should trigger incus to do namespaces. I'm not sure what
syscall is causing the bug, so I do not have a mini C program. This should be
enough to see the log in the dmesg. (it can be done on any OS, VM is not
needed, but it was easier for me)
I also did a git bisect on the kernel, the first commit to have the bug is
0c17270f9b920e4e1777488f1911bbfdaf2af3be
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next reply other threads:[~2025-10-15 22:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-15 22:02 Stephen Hemminger [this message]
2025-10-16 0:07 ` [Bug 220649] New: A bug is happening at __dev_change_net_namespace when runnning LXC/Incus service in 6.17 Jakub Kicinski
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