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VMCI: Fix deref before NULL-check of queuepair ptr

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Check for a valid queuepair ptr before trying to lock the queuepair (which will
deref it).

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andy King <acking@vmware.com>
Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy King 2013-01-10 15:41:40 -08:00 committed by Greg Kroah-Hartman
parent 42281d20cd
commit 32b083a3fd
1 changed files with 2 additions and 2 deletions
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4
drivers/misc/vmw_vmci/vmci_queue_pair.c
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@ -3355,11 +3355,11 @@ ssize_t vmci_qpair_dequev(struct vmci_qp *qpair,
{ {
ssize_t result; ssize_t result;
qp_lock(qpair);
if (!qpair || !iov) if (!qpair || !iov)
return VMCI_ERROR_INVALID_ARGS; return VMCI_ERROR_INVALID_ARGS;
qp_lock(qpair);
do { do {
result = qp_dequeue_locked(qpair->produce_q, result = qp_dequeue_locked(qpair->produce_q,
qpair->consume_q, qpair->consume_q,