net/smc: return 0 for ioctl calls in states INIT and CLOSED
authorUrsula Braun <ubraun@linux.ibm.com>
Wed, 23 May 2018 14:38:09 +0000 (16:38 +0200)
committerDavid S. Miller <davem@davemloft.net>
Wed, 23 May 2018 20:02:35 +0000 (16:02 -0400)
commit2351abe6f8736167a187cec867933bc66c3284c0
tree514a007832019511de2d7bac67c3ec732aeb783d
parent8156b0ba7413238e473ef567ebecd755f92275c5
net/smc: return 0 for ioctl calls in states INIT and CLOSED

A connected SMC-socket contains addresses of descriptors for the
send buffer and the rmb (receive buffer). Fields of these descriptors
are used to determine the answer for certain ioctl requests.
Add extra handling for unconnected SMC socket states without valid
buffer descriptor addresses.

Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Reported-by: syzbot+e6714328fda813fc670f@syzkaller.appspotmail.com
Signed-off-by: David S. Miller <davem@davemloft.net>
net/smc/af_smc.c