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-rw-r--r--erts/emulator/beam/io.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index 8c67f731f4..9a67e05bfa 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -1501,8 +1501,19 @@ erts_schedule_proc2port_signal(Process *c_p,
erts_smp_proc_lock(c_p, ERTS_PROC_LOCK_MAIN);
if (sched_res != 0) {
- if (refp)
+ if (refp) {
+ /*
+ * We need to restore the message queue save
+ * pointer to the beginning of the message queue
+ * since the caller now wont wait for a message
+ * containing the reference created above...
+ */
+ ASSERT(c_p);
+ erts_smp_proc_lock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
+ JOIN_MESSAGE(c_p);
+ erts_smp_proc_unlock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
*refp = NIL;
+ }
return ERTS_PORT_OP_DROPPED;
}
return ERTS_PORT_OP_SCHEDULED;