Ubuntu 19.0 使用kgdb调试的时候出现：
Thread 463 received signal SIGTRAP, Trace/breakpoint trap.
0xffffffff8117ba74 in rb_is_reader_page (page=<optimized out>)
at kernel/trace/ring_buffer.c:2478
2478 if (RB_WARN_ON(cpu_buffer,
疯了，不知道怎么解决。
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- Thread 463 received signal SIGTRAP, Trace/breakpoint trap.