Reproduced this on a second VM, independently of the original report. Environment: Ubuntu 24.04 LTS, linux-image-azure 7.0.0-1017.17~24.04.1 (same build as reported) VM size: Standard_B4as_v2, region Germany West Central
Accelerated Networking enabled at the time of the crash; Mellanox VF (mlx5_core loaded) Uptime at oops: ~160854 s (~45 h), date of crash: [Datum] Same signature as the original report: RIP strlen+0x0/0x30, identical call chain via kernfs_remove_by_name_ns → sysfs_remove_bin_file → pci_remove_resource_files → pci_stop_bus_device → hv_eject_device_work, and the same "kworker exited with irqs disabled" note. Slightly different fault address (0x40000 instead of 0x0) and different hv_pci instance/kworker, but otherwise matching. Full serial console Oops including the "note: kworker/u16:4[329995] exited with irqs disabled" line is attached as [Dateiname]. Aftermath: VM unresponsive, recovery only via stop Since this is the second independent occurrence on a different VM size (B4as_v2 vs. D2as_v5) and both with Mellanox VFs, this does not appear to be tied to a specific VM SKU or VF driver. ** Attachment added: "Full serial console Oops (B4as_v2, second independent occurrence" https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/2172226/+attachment/6014975/+files/serial-console-oops-B4as-v2.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2172226 Title: linux-azure 7.0.0-1017: NULL pointer dereference in hv_eject_device_work when the host removes the Accelerated Networking VF To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/2172226/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
