### RT-Thread Version 5.2.2 ### Hardware Type/Architectures RK3500 ### Develop Toolchain GCC ### Describe the bug 在 rt-thread/examples/utest/testcases/kernel/signal_tc.c 测试代码运行过程中发现,多次执行会触发 block_ptr 为空的错误: <img width="1026" height="74" alt="Image" src="https://github.com/user-attachments/assets/ac58ad38-4bf8-4ce5-825f-861ac45608f1" /> 跟踪发现 rt_thread_kill 中会一直执行 rt_mp_alloc ,导致资源耗尽 <img width="524" height="29" alt="Image" src="https://github.com/user-attachments/assets/452c1367-73a7-4774-be69-7c99183274b5" /> ### Other additional context _No response_
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