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authorUrsula Braun <ubraun@linux.vnet.ibm.com>2018-03-27 11:43:50 +0300
committerDavid S. Miller <davem@davemloft.net>2018-03-27 18:59:49 +0300
commitab6f6dd18ab801fcbbaa05fb5401e91f48778e04 (patch)
treed8b0c9a66ef652d1dca49cd06ed83846fe9816f8 /net/smc/smc_clc.c
parentb85ab56c3f81c5a24b5a5213374f549df06430da (diff)
downloadlinux-ab6f6dd18ab801fcbbaa05fb5401e91f48778e04.tar.xz
net/smc: use announced length in sock_recvmsg()
Not every CLC proposal message needs the maximum buffer length. Due to the MSG_WAITALL flag, it is important to use the peeked real length when receiving the message. Fixes: d63d271ce2b5ce ("smc: switch to sock_recvmsg()") Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_clc.c')
-rw-r--r--net/smc/smc_clc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/smc/smc_clc.c b/net/smc/smc_clc.c
index 8ac51583a063..15c213250606 100644
--- a/net/smc/smc_clc.c
+++ b/net/smc/smc_clc.c
@@ -133,7 +133,7 @@ int smc_clc_wait_msg(struct smc_sock *smc, void *buf, int buflen,
/* receive the complete CLC message */
memset(&msg, 0, sizeof(struct msghdr));
- iov_iter_kvec(&msg.msg_iter, READ | ITER_KVEC, &vec, 1, buflen);
+ iov_iter_kvec(&msg.msg_iter, READ | ITER_KVEC, &vec, 1, datlen);
krflags = MSG_WAITALL;
smc->clcsock->sk->sk_rcvtimeo = CLC_WAIT_TIME;
len = sock_recvmsg(smc->clcsock, &msg, krflags);