net/smc: move sock lock in smc_ioctl()
authorUrsula Braun <ubraun@linux.ibm.com>
Wed, 8 Aug 2018 12:13:21 +0000 (14:13 +0200)
committerDavid S. Miller <davem@davemloft.net>
Thu, 9 Aug 2018 02:14:22 +0000 (19:14 -0700)
commit7311d665ca68907b9c43d6d1021f816f9a7bbd57
tree3edc813b7168552a1ca9afad1f04b698a65f371e
parentbd58c7e0860f54710907903ed6daff699d1fc5b9
net/smc: move sock lock in smc_ioctl()

When an SMC socket is connecting it is decided whether fallback to
TCP is needed. To avoid races between connect and ioctl move the
sock lock before the use_fallback check.

Reported-by: syzbot+5b2cece1a8ecb2ca77d8@syzkaller.appspotmail.com
Reported-by: syzbot+19557374321ca3710990@syzkaller.appspotmail.com
Fixes: 1992d99882af ("net/smc: take sock lock in smc_ioctl()")
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/smc/af_smc.c