@realtimeradio found a missing "->next".

jaycedowell · web-flow · commit 15ef4d28dec7 · 2021-07-20T04:55:55.000-06:00
diff --git a/src/ib_verbs.hpp b/src/ib_verbs.hpp
@@ -647,7 +647,7 @@ class Verbs {
                     recv_head = &(_verbs.pkt_buf[wr_id]);
                     recv_tail = &recv_head->wr;
                 } else {
-                    recv_tail = &(_verbs.pkt_buf[wr_id].wr);
+                    recv_tail->next = &(_verbs.pkt_buf[wr_id].wr);
                     recv_tail = recv_tail->next;
                 }
             } // for each work completion

Original file line number	Diff line number	Diff line change
`@@ -647,7 +647,7 @@ class Verbs {`
`647`	`647`	`recv_head = &(_verbs.pkt_buf[wr_id]);`
`648`	`648`	`recv_tail = &recv_head->wr;`
`649`	`649`	`} else {`
`650`		`- recv_tail = &(_verbs.pkt_buf[wr_id].wr);`
	`650`	`+ recv_tail->next = &(_verbs.pkt_buf[wr_id].wr);`
`651`	`651`	`recv_tail = recv_tail->next;`
`652`	`652`	`}`
`653`	`653`	`} // for each work completion`