Re: [PATCH net/gve] gve: fix early boot deadlock between rtnl_lock and service_task_mutex

On Tue, 4 Aug 2026 07:18:21 +0000 Rénich Bon Ćirić wrote:
> We hit a reproducible hard deadlock (AB-BA circular lock inversion) during early boot on EL10 / RHEL 10 kernels when running Google Cloud Platform VMs with the gve driver:
> 
> 1. Thread A (NetworkManager): Holds rtnl_lock during __dev_open -> gve_open -> gve_queues_start -> gve_add_napi, and attempts to acquire service_task_mutex.
> 2. Thread B (gve_service_task worker): Holds service_task_mutex, and calls reset recovery which attempts to acquire rtnl_lock.
> 
> Serial Console Trace:
> "INFO: task NetworkManager:856 is blocked on a mutex likely owned by task NetworkManager:856" at RIP: copy_net_ns+0x1a4 / selinux_netlbl_sk_security_free.

You emailed the upstream Linux list.
If the bug exists in the upstream kernel we will happily review the fix
- please post it to the list.