tree ac7da3efc4748e0a2efb8e27aad0b4aae58e2c2e
parent 5ae94c0d2f0bed41d6718be743985d61b7f5c47d
author Mathias Krause <minipli@googlemail.com> 1365299514 +0000
committer David S. Miller <davem@davemloft.net> 1365366481 -0400

iucv: Fix missing msg_namelen update in iucv_sock_recvmsg()

The current code does not fill the msg_name member in case it is set.
It also does not set the msg_namelen member to 0 and therefore makes
net/socket.c leak the local, uninitialized sockaddr_storage variable
to userland -- 128 bytes of kernel stack memory.

Fix that by simply setting msg_namelen to 0 as obviously nobody cared
about iucv_sock_recvmsg() not filling the msg_name in case it was set.

Cc: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>