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: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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@ -1036,6 +1036,8 @@ int svc_rdma_send(struct svcxprt_rdma *xprt, struct ib_send_wr *wr)
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wait_event(xprt->sc_send_wait,
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atomic_read(&xprt->sc_sq_count) <
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xprt->sc_sq_depth);
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if (test_bit(XPT_CLOSE, &xprt->sc_xprt.xpt_flags))
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return 0;
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continue;
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}
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/* Bumped used SQ WR count and post */
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