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authorAl Viro <viro@zeniv.linux.org.uk>2017-07-14 16:08:29 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2017-12-02 21:24:01 -0500
commit19c5b89d8d582cce9a90335de212cf477fe15b95 (patch)
treeb998b3983df8c51352d4b519cef781246a9f7ba4 /drivers/misc/vmw_vmci
parent4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323 (diff)
vmci: fix buf_size in case of iovec-based accesses
Both qp_dequeue_locked() and qp_enqueue_locked() use the buf_size argument to decide how much would be there to copy; in case of iovec- (== msghdr-)based primitives it's not iov_size, it's msg_data_left(msg). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/misc/vmw_vmci')
-rw-r--r--drivers/misc/vmw_vmci/vmci_queue_pair.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/misc/vmw_vmci/vmci_queue_pair.c b/drivers/misc/vmw_vmci/vmci_queue_pair.c
index 8af5c2672f71..7387dedcda67 100644
--- a/drivers/misc/vmw_vmci/vmci_queue_pair.c
+++ b/drivers/misc/vmw_vmci/vmci_queue_pair.c
@@ -3253,7 +3253,7 @@ ssize_t vmci_qpair_enquev(struct vmci_qp *qpair,
result = qp_enqueue_locked(qpair->produce_q,
qpair->consume_q,
qpair->produce_q_size,
- msg, iov_size,
+ msg, msg_data_left(msg),
qp_memcpy_to_queue_iov);
if (result == VMCI_ERROR_QUEUEPAIR_NOT_READY &&
@@ -3295,7 +3295,7 @@ ssize_t vmci_qpair_dequev(struct vmci_qp *qpair,
result = qp_dequeue_locked(qpair->produce_q,
qpair->consume_q,
qpair->consume_q_size,
- msg, iov_size,
+ msg, msg_data_left(msg),
qp_memcpy_from_queue_iov,
true);
@@ -3339,7 +3339,7 @@ ssize_t vmci_qpair_peekv(struct vmci_qp *qpair,
result = qp_dequeue_locked(qpair->produce_q,
qpair->consume_q,
qpair->consume_q_size,
- msg, iov_size,
+ msg, msg_data_left(msg),
qp_memcpy_from_queue_iov,
false);