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Commit 830bb59b authored by Tom Tucker's avatar Tom Tucker Committed by J. Bruce Fields
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SVCRDMA: Add check for XPT_CLOSE in svc_rdma_send 



SVCRDMA: Add check for XPT_CLOSE in svc_rdma_send

The svcrdma transport can crash if a send is waiting for an
empty SQ slot and the connection is closed due to an asynchronous error.
The crash is caused when svc_rdma_send attempts to send on a deleted
QP.

Signed-off-by: default avatarTom Tucker <tom@opengridcomputing.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@citi.umich.edu>
parent 9167f501

net/sunrpc/xprtrdma/svc_rdma_transport.c

+2 −0
Original line number Diff line number Diff line
@@ -1036,6 +1036,8 @@ int svc_rdma_send(struct svcxprt_rdma *xprt, struct ib_send_wr *wr) 
			wait_event(xprt->sc_send_wait,

				   atomic_read(&xprt->sc_sq_count) <

				   xprt->sc_sq_depth);

			if (test_bit(XPT_CLOSE, &xprt->sc_xprt.xpt_flags))

				return 0;

			continue;

		}

		/* Bumped used SQ WR count and post */