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authorUrsula Braun <ubraun@linux.ibm.com>2018-07-05 17:15:30 +0300
committerDavid S. Miller <davem@davemloft.net>2018-07-07 14:25:13 +0300
commite1bbdd57047454dad068dc36612dd60a57f4c58f (patch)
tree76e741e90f29cedf93a749cb68d9695704482958 /net/smc/smc_close.c
parent000244d3dc1f8114e38fe9ee2d9a0986404d9cbe (diff)
downloadlinux-e1bbdd57047454dad068dc36612dd60a57f4c58f.tar.xz
net/smc: reduce sock_put() for fallback sockets
smc_release() calls a sock_put() for smc fallback sockets to cover the passive closing sock_hold() in __smc_connect() and smc_tcp_listen_work(). This does not make sense for sockets in state SMC_LISTEN and SMC_INIT. An SMC socket stays in state SMC_INIT if connect fails. The sock_put in smc_connect_abort() does not cover all failures. Move it into smc_connect_decline_fallback(). Fixes: ee9dfbef02d18 ("net/smc: handle sockopts forcing fallback") Reported-by: syzbot+3a0748c8f2f210c0ef9b@syzkaller.appspotmail.com Reported-by: syzbot+9e60d2428a42049a592a@syzkaller.appspotmail.com Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_close.c')
-rw-r--r--net/smc/smc_close.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/smc/smc_close.c b/net/smc/smc_close.c
index fa41d9881741..ac961dfb1ea1 100644
--- a/net/smc/smc_close.c
+++ b/net/smc/smc_close.c
@@ -107,6 +107,8 @@ static void smc_close_active_abort(struct smc_sock *smc)
}
switch (sk->sk_state) {
case SMC_INIT:
+ sk->sk_state = SMC_PEERABORTWAIT;
+ break;
case SMC_ACTIVE:
sk->sk_state = SMC_PEERABORTWAIT;
release_sock(sk);