diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c
index 585db1a..2e04231 100644
--- a/src/backend/tcop/postgres.c
+++ b/src/backend/tcop/postgres.c
@@ -2918,6 +2918,20 @@ ProcessInterrupts(void)
 			DisableNotifyInterrupt();
 			DisableCatchupInterrupt();
 			pgstat_report_recovery_conflict(RecoveryConflictReason);
+			
+			/*
+			 * If we are in DoingCommandRead state, we can't really use
+			 * ereport(ERROR) because long jumps are not recommended in this
+			 * state. By throwing longjmps in this state, we not only risks of
+			 * breaking protocol at our level, but also risks leaving openssl
+			 * in an inconsistent state, either violating the ssl protocol or
+			 * simply with internal state trashed because it got interrupted
+			 * in the middle of changing it.
+			 *
+			 * Our best possible remedy for now is to promote ERROR to FATAL
+			 * until we figure out a way to handle errors more effectively in
+			 * this state.
+			 */
 			if (DoingCommandRead)
 				ereport(FATAL,
 						(errcode(ERRCODE_T_R_SERIALIZATION_FAILURE),