Program terminated with signal 6, Aborted

　　Program terminated with signal 6, Aborted,有可能啥原因呢？其中一种原因就是事实上的OOM（虽然/var/log/message中没有标明操作系统kill了进行，应该是进程内部初始化已申请内存时报错了，因为malloc的申请会被OS尽可能延后的分配，所以很有可能已经申请的内存早就OOM了，但是程序还可以运行一段时间，甚至很久，除非设置了lock in memory，比如jdk和oracle、mysql都支持这么做）

　　但是也不一定，如下：

2022-04-01 06:45:04.269332C mysub zjh@postgres ::1(62148) walsender idle 55006[2022-04-01 06:45:04 UTC] 0 [88793] ERROR:  replication slot "mysub" is active for PID 192415
2022-04-01 06:45:34.277434C mysub zjh@postgres ::1(62484) walsender idle 55006[2022-04-01 06:45:34 UTC] 0 [88976] ERROR:  replication slot "mysub" is active for PID 192415
2022-04-01 06:48:30.667272C mysub zjh@postgres ::1(63883) walsender startup XX000[2022-04-01 06:46:04 UTC] 0 [89179] PANIC:  stuck spinlock detected at InitWalSenderSlot, walsender.c:2415
2022-04-01 06:48:39.594554C  @  postmaster  00000[2022-03-29 11:23:45 UTC] 0 [69880] LOG:  server process (PID 89179) was terminated by signal 6: Aborted
2022-04-01 06:48:39.594567C  @  postmaster  00000[2022-03-29 11:23:45 UTC] 0 [69880] LOG:  terminating any other active server processes
2022-04-01 06:48:39.594624C pgbench_sub zjh@postgres ::1(63882) walsender idle 57P02[2022-04-01 05:19:52 UTC] 0 [231421] WARNING:  terminating connection because of crash of another server process
2022-04-01 06:48:39.594624C pgbench_sub zjh@postgres ::1(63882) walsender idle 57P02[2022-04-01 05:19:52 UTC] 0 [231421] DETAIL:  The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory.
2022-04-01 06:48:39.594624C pgbench_sub zjh@postgres ::1(63882) walsender idle 57P02[2022-04-01 05:19:52 UTC] 0 [231421] HINT:  In a moment you should be able to reconnect to the database and repeat your command.
2022-04-01 06:48:39.594631C ltsql zjh@postgres [local] client backend idle 57P02[2022-04-01 06:14:36 UTC] 0 [254275] WARNING:  terminating connection because of crash of another server process
2022-04-01 06:48:39.594631C ltsql zjh@postgres [local] client backend idle 57P02[2022-04-01 06:14:36 UTC] 0 [254275] DETAIL:  The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory.
2022-04-01 06:48:39.594631C ltsql zjh@postgres [local] client backend idle 57P02[2022-04-01 06:14:36 UTC] 0 [254275] HINT:  In a moment you should be able to reconnect to the database and repeat your command.

 　　在postgresql/lightdb中，是因为默认（通过编译时宏S_LOCK_TEST控制）会限制自旋锁等待的时间，如果超过指定阈值（1ms-1s*1000），就会触发stuck spinlock，然后导致lightdb/postgresql自动重启。