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SUNRPC: Fix a nfs4 over rdma transport oops 

Prevent an RPC oops when freeing a dynamically allocated RDMA
buffer, used in certain special-case large metadata operations.

Signed-off-by: Tom Talpey <tmt@netapp.com>
Signed-off-by: James Lentini <jlentini@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Tom Talpey 2008-02-27 15:04:26 -05:00 committed by Trond Myklebust
parent af1b8c2ff7
commit ee1a2c564f
1 changed files with 5 additions and 1 deletions
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6
net/sunrpc/xprtrdma/transport.c
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@ -614,7 +614,11 @@ xprt_rdma_free(void *buffer)
return;
req = container_of(buffer, struct rpcrdma_req, rl_xdr_buf[0]);
r_xprt = container_of(req->rl_buffer, struct rpcrdma_xprt, rx_buf);
if (req->rl_iov.length == 0) { /* see allocate above */
r_xprt = container_of(((struct rpcrdma_req *) req->rl_buffer)->rl_buffer,
struct rpcrdma_xprt, rx_buf);
} else
r_xprt = container_of(req->rl_buffer, struct rpcrdma_xprt, rx_buf);
rep = req->rl_reply;
dprintk("RPC: %s: called on 0x%p%s\n",