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authorXin Long <lucien.xin@gmail.com>2019-03-03 16:50:26 +0800
committerDavid S. Miller <davem@davemloft.net>2019-03-04 10:58:54 -0800
commit901efe12318b1ea8d3e2c88a7b75ed6e6d5d7245 (patch)
tree0d6425c93b6e00fe83e3938ef6f6d1921dd1d22f
parentteam: Free BPF filter when unregistering netdev (diff)
downloadlinux-dev-901efe12318b1ea8d3e2c88a7b75ed6e6d5d7245.tar.xz
linux-dev-901efe12318b1ea8d3e2c88a7b75ed6e6d5d7245.zip
sctp: call iov_iter_revert() after sending ABORT
The user msg is also copied to the abort packet when doing SCTP_ABORT in sctp_sendmsg_check_sflags(). When SCTP_SENDALL is set, iov_iter_revert() should have been called for sending abort on the next asoc with copying this msg. Otherwise, memcpy_from_msg() in sctp_make_abort_user() will fail and return error. Fixes: 4910280503f3 ("sctp: add support for snd flag SCTP_SENDALL process in sendmsg") Reported-by: Ying Xu <yinxu@redhat.com> Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/sctp/socket.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index a78e55a1bb9c..533207dbeae9 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -1866,6 +1866,7 @@ static int sctp_sendmsg_check_sflags(struct sctp_association *asoc,
pr_debug("%s: aborting association:%p\n", __func__, asoc);
sctp_primitive_ABORT(net, asoc, chunk);
+ iov_iter_revert(&msg->msg_iter, msg_len);
return 0;
}