Hi Chuck,
Different issue, so started different thread.
If I unload our driver while there is an open NFS connection I get a null pointer dereference in rpcrdma_regbuf_is_mapped
the pointer to buf received in this function is NULL.
If I check buf for NULL and return false I am able to unload the driver, though I'm not sure this is sufficient.
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index 1342f743..73066a6 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -588,7 +588,7 @@ struct rpcrdma_regbuf *rpcrdma_alloc_regbuf(size_t, enum dma_data_direction,
static inline bool
rpcrdma_regbuf_is_mapped(struct rpcrdma_regbuf *rb)
{
- return rb->rg_device != NULL;
+ return rb && (rb->rg_device != NULL);
:
Will be great if you could take a look
Thanks,
Michal
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