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RDMA/amso1100: Fix error path in c2_llp_accept() 

Another NULL dereference spotted by the Coverity checker (cid #1395):
In case we can't alloc the vq_req, we goto bail1, where we call
vq_req_free(c2dev, vq_req); which then dereferences vq_req.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Acked-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Eric Sesterhenn 2006-09-28 10:38:32 -07:00 committed by Roland Dreier
parent 6edf602341
commit 44334bd97e
1 changed files with 7 additions and 8 deletions
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15
drivers/infiniband/hw/amso1100/c2_cm.c
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@ -302,7 +302,7 @@ int c2_llp_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
vq_req = vq_req_alloc(c2dev);
if (!vq_req) {
err = -ENOMEM;
goto bail1;
goto bail0;
}
vq_req->qp = qp;
vq_req->cm_id = cm_id;
@ -311,7 +311,7 @@ int c2_llp_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL);
if (!wr) {
err = -ENOMEM;
goto bail2;
goto bail1;
}
/* Build the WR */
@ -331,7 +331,7 @@ int c2_llp_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
/* Validate private_data length */
if (iw_param->private_data_len > C2_MAX_PRIVATE_DATA_SIZE) {
err = -EINVAL;
goto bail2;
goto bail1;
}
if (iw_param->private_data) {
@ -348,19 +348,19 @@ int c2_llp_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
err = vq_send_wr(c2dev, (union c2wr *) wr);
if (err) {
vq_req_put(c2dev, vq_req);
goto bail2;
goto bail1;
}
/* Wait for reply from adapter */
err = vq_wait_for_reply(c2dev, vq_req);
if (err)
goto bail2;
goto bail1;
/* Check that reply is present */
reply = (struct c2wr_cr_accept_rep *) (unsigned long) vq_req->reply_msg;
if (!reply) {
err = -ENOMEM;
goto bail2;
goto bail1;
}
err = c2_errno(reply);
@ -368,9 +368,8 @@ int c2_llp_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
if (!err)
c2_set_qp_state(qp, C2_QP_STATE_RTS);
bail2:
kfree(wr);
bail1:
kfree(wr);
vq_req_free(c2dev, vq_req);
bail0:
if (err) {