netdev - Fw: [Bug 220649] New: A bug is happening at __dev_change_net_namespace when runnning LXC/Incus service in 6.17

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251015150238.6849de11@hermes.local>
Date: Wed, 15 Oct 2025 15:02:38 -0700
From: Stephen Hemminger <stephen@...workplumber.org>
To: netdev@...r.kernel.org
Subject: Fw: [Bug 220649] New: A bug is happening at
 __dev_change_net_namespace when runnning LXC/Incus service in 6.17

Begin forwarded message:

Date: Thu, 09 Oct 2025 13:08:57 +0000
From: bugzilla-daemon@...nel.org
To: stephen@...workplumber.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@...workplumber.org
          Reporter: kosmx.mc@...il.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

-- 
You may reply to this email to add a comment.

You are receiving this mail because:
You are the assignee for the bug.