tree 5cc5dccf2d25d7305186bbf5cf94e67563f8d9bf
parent 11ba961c916127651e12af6cad3891f8aeb25aa9
author Ursula Braun <ubraun@linux.ibm.com> 1533730399 +0200
committer David S. Miller <davem@davemloft.net> 1533780862 -0700

net/smc: no shutdown in state SMC_LISTEN

Invoking shutdown for a socket in state SMC_LISTEN does not make
sense. Nevertheless programs like syzbot fuzzing the kernel may
try to do this. For SMC this means a socket refcounting problem.
This patch makes sure a shutdown call for an SMC socket in state
SMC_LISTEN simply returns with -ENOTCONN.

Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>