Fix a potential socket leak in the NFS server. If a client closes its

connection after it was accepted by the userland nfsd process but before
it was handled off to svc_vc_create() in the kernel, then svc_vc_create()
would see it as a new listen socket and try to listen on it leaving a
dangling reference to the socket.  Instead, check for disconnected sockets
and treat them like a connected socket.  The call to pru_getaddr() should
fail and cause svc_vc_create() to fail.  Note that we need to lock the
socket to get a consistent snapshot of so_state since there is a window
in soisdisconnected() where both flags are clear.

Reviewed by:	dfr, rmacklem
MFC after:	1 week

0 files changed, 0 insertions, 0 deletions