I have been tracking down a kernel panic while running qperf udp_bw tests and it looks like ib_ipoib is using memory after freeing it.
The problem is with connected mode. I don't see the panic with datagram mode. Looking at the source code, I see that the process of creating the QP with the connection manager, ipoib_cm_create_tx(), has pointers to struct ipoib_neigh and struct ipoib_path but there doesn't seem to be a reference count or struct completion similar to the way the SA path record look up process has to prevent this. I'm working on a patch to test this theory but wanted to post this before going too far in case others are already aware of the problem and working on it. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
