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| author | Xin Long <lucien.xin@gmail.com> | 2019-03-03 11:50:26 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-10 09:17:17 +0300 |
| commit | 8085d6d03fe3702e9cf37fff3677c08b40b1007f (patch) | |
| tree | bd781b4b16b321bd629c5fb9dfedf90d25a122d6 /net/sctp | |
| parent | 16a006d72f333882b6affdebcaa0e84524e4a0c8 (diff) | |
| download | linux-8085d6d03fe3702e9cf37fff3677c08b40b1007f.tar.xz | |
sctp: call iov_iter_revert() after sending ABORT
[ Upstream commit 901efe12318b1ea8d3e2c88a7b75ed6e6d5d7245 ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/sctp')
| -rw-r--r-- | net/sctp/socket.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index e5e70cff5bb3..1b16250c5718 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -1884,6 +1884,7 @@ 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; } |