[PATCH net] sock_diag: don't broadcast kernel sockets

Kernel sockets do not hold a reference for the network namespace to which they point. Socket destruction broadcasting relies on the network namespace and will cause the splat below when a kernel socket is destroyed. This fix simply ignores kernel sockets when they are destroyed. Reported as:

Re: [PATCH net] sock_diag: don't broadcast kernel sockets

From: Craig Gallek kr...@google.com Date: Tue, 30 Jun 2015 12:49:32 -0400 Kernel sockets do not hold a reference for the network namespace to which they point. Socket destruction broadcasting relies on the network namespace and will cause the splat below when a kernel socket is destroyed.