Hello:
This patch was applied to netdev/net.git (main) by Paolo Abeni pabeni@redhat.com:
On Tue, 21 Oct 2025 14:17:18 +0200 you wrote:
From: Stefano Garzarella sgarzare@redhat.com
Syzbot reported a potential lock inversion deadlock between vsock_register_mutex and sk_lock-AF_VSOCK when vsock_linger() is called.
The issue was introduced by commit 687aa0c5581b ("vsock: Fix transport_* TOCTOU") which added vsock_register_mutex locking in vsock_assign_transport() around the transport->release() call, that can call vsock_linger(). vsock_assign_transport() can be called with sk_lock held. vsock_linger() calls sk_wait_event() that temporarily releases and re-acquires sk_lock. During this window, if another thread hold vsock_register_mutex while trying to acquire sk_lock, a circular dependency is created.
[...]
Here is the summary with links: - [net] vsock: fix lock inversion in vsock_assign_transport() https://git.kernel.org/netdev/net/c/f7c877e75352
You are awesome, thank you!