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[204.195.96.226]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-33ba383dbe2sm681492a91.2.2025.10.15.15.02.40 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Oct 2025 15:02:41 -0700 (PDT) Date: Wed, 15 Oct 2025 15:02:38 -0700 From: Stephen Hemminger 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 Message-ID: <20251015150238.6849de11@hermes.local> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit 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 -- You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.