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xprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create 

If there are failures then we must not leave the non-NULL pointers with
the error value, otherwise `rpcrdma_ep_destroy` gets confused and tries
free them, resulting in an Oops.

Signed-off-by: Dan Aloni <dan.aloni@vastdata.com>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Dan Aloni 2022-01-25 22:06:46 +02:00 committed by Anna Schumaker
parent 468d126dab
commit a9c10b5b3b
1 changed files with 3 additions and 0 deletions
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3
net/sunrpc/xprtrdma/verbs.c
View File

@ -413,6 +413,7 @@ static int rpcrdma_ep_create(struct rpcrdma_xprt *r_xprt)
IB_POLL_WORKQUEUE);
if (IS_ERR(ep->re_attr.send_cq)) {
rc = PTR_ERR(ep->re_attr.send_cq);
ep->re_attr.send_cq = NULL;
goto out_destroy;
}
@ -421,6 +422,7 @@ static int rpcrdma_ep_create(struct rpcrdma_xprt *r_xprt)
IB_POLL_WORKQUEUE);
if (IS_ERR(ep->re_attr.recv_cq)) {
rc = PTR_ERR(ep->re_attr.recv_cq);
ep->re_attr.recv_cq = NULL;
goto out_destroy;
}
ep->re_receive_count = 0;
@ -459,6 +461,7 @@ static int rpcrdma_ep_create(struct rpcrdma_xprt *r_xprt)
ep->re_pd = ib_alloc_pd(device, 0);
if (IS_ERR(ep->re_pd)) {
rc = PTR_ERR(ep->re_pd);
ep->re_pd = NULL;
goto out_destroy;
}