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使用atexit调用aclFinalize会出现segmentation fault的问题
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#I5R8F3
Bug-Report
冯远滔
创建于
2022-09-15 14:43
一、问题现象(附报错日志上下文): ***注***:目前paddle-lite使用此方法在程序退出前调用aclFinalize(),也有[相关的issue](https://github.com/PaddlePaddle/Paddle-Lite/issues/9087)指出遇到同样的segmetnation fault问题。此问题在[opencv dnn中实现cann后端](https://github.com/opencv/opencv/pull/22258)时发现。 多次执行会有不同的报错,总的来说观察到有以下三种(或更多): 1. Segmentation fault (core dumped) 2. double free or corruption (!prev) 3. bus error 二、软件版本: -- CANN 版本 (e.g., CANN 3.0.x,5.x.x): 5.1.RC2.alpha007 --Tensorflow/Pytorch/MindSpore 版本: 无 --Python 版本 (e.g., Python 3.7.5): 3.7.5 -- MindStudio版本 (e.g., MindStudio 2.0.0 (beta3)): 无 --操作系统版本 (e.g., Ubuntu 18.04): Ubuntu 18.04.1 LTS 三、测试步骤: 1. 源代码中使用atexit调用aclFinalize: ```cpp static void finalizeAscend() { std::cout << "Exiting ... " << std::endl; aclFinalize(); // can only be called once in one process } void initACL() { static std::mutex mtx; static bool initialized = false; mtx.lock(); if (!initialized) { aclInit(NULL); atexit(finalizeAscend); initialized = true; } mtx.unlock(); } int main() { // 申请管理资源 initACL(); // 其他代码... } ``` 2. 编译,运行,可以得到正确结果,但在程序退出时会触发segmentation fault错误。错误日志在第四部分。 四、日志信息: ``` // 忽略前面日志 Exiting ... double free or corruption (!prev) [1] 22843 abort (core dumped) ./build/matmuldebug $ [ERROR] TBE(22963,python3):2022-09-15-14:42:30.311.177 [../../../../../../latest/python/site-packages/tbe/common/repository_manager/utils/repository_manager_log.py:29][log] [../../../../../../latest/python/site-packages/tbe/common/repository_manager/utils/common.py:97][repository_manager] The main process does not exist. We would kill multiprocess manager process: 22854. [ERROR] TBE(22959,python3):2022-09-15-14:42:30.358.406 [../../../../../../latest/python/site-packages/tbe/common/repository_manager/utils/repository_manager_log.py:29][log] [../../../../../../latest/python/site-packages/tbe/common/repository_manager/route.py:72][repository_manager] Subprocess[task_distribute] raise error[] Process ForkServerProcess-3: Traceback (most recent call last): File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/process.py", line 297, in _bootstrap self.run() File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/process.py", line 99, in run self._target(*self._args, **self._kwargs) File "/usr/local/Ascend/ascend-toolkit/latest/python/site-packages/tbe/common/repository_manager/route.py", line 73, in wrapper raise exp File "/usr/local/Ascend/ascend-toolkit/latest/python/site-packages/tbe/common/repository_manager/route.py", line 70, in wrapper func(*args, **kwargs) File "/usr/local/Ascend/ascend-toolkit/latest/python/site-packages/tbe/common/repository_manager/route.py", line 371, in task_distribute key, func_name, detail = task_queue.get() File "<string>", line 2, in get File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/managers.py", line 819, in _callmethod kind, result = conn.recv() File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/connection.py", line 250, in recv buf = self._recv_bytes() File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/connection.py", line 407, in _recv_bytes buf = self._recv(4) File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/connection.py", line 383, in _recv raise EOFError EOFError [ERROR] TBE(22958,python3):2022-09-15-14:42:31.184.824 [../../../../../../latest/python/site-packages/tbe/common/repository_manager/utils/repository_manager_log.py:29][log] [../../../../../../latest/python/site-packages/tbe/common/repository_manager/route.py:72][repository_manager] Subprocess[server] raise error[[Errno 32] Broken pipe] Process ForkServerProcess-2: Traceback (most recent call last): File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/process.py", line 297, in _bootstrap self.run() File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/process.py", line 99, in run self._target(*self._args, **self._kwargs) File "/usr/local/Ascend/ascend-toolkit/latest/python/site-packages/tbe/common/repository_manager/route.py", line 73, in wrapper raise exp File "/usr/local/Ascend/ascend-toolkit/latest/python/site-packages/tbe/common/repository_manager/route.py", line 70, in wrapper func(*args, **kwargs) File "/usr/local/Ascend/ascend-toolkit/latest/python/site-packages/tbe/common/repository_manager/route.py", line 300, in server while not server_event.is_set(): File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/managers.py", line 1088, in is_set return self._callmethod('is_set') File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/managers.py", line 818, in _callmethod conn.send((self._id, methodname, args, kwds)) File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/connection.py", line 206, in send self._send_bytes(_ForkingPickler.dumps(obj)) File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/connection.py", line 404, in _send_bytes self._send(header + buf) File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/connection.py", line 368, in _send n = write(self._handle, buf) BrokenPipeError: [Errno 32] Broken pipe /usr/local/python3.7.5/lib/python3.7/multiprocessing/semaphore_tracker.py:144: UserWarning: semaphore_tracker: There appear to be 91 leaked semaphores to clean up at shutdown len(cache)) ``` <!-- xxxx 请根据自己的运行环境参考以下方式搜集日志信息,如果涉及到算子开发相关的问题,建议也提供UT/ST测试和单算子集成测试相关的日志。 日志提供方式: 将日志打包后作为附件上传。若日志大小超出附件限制,则可上传至外部网盘后提供链接。 获取方法请参考wiki: https://gitee.com/ascend/modelzoo/wikis/%E5%A6%82%E4%BD%95%E8%8E%B7%E5%8F%96%E6%97%A5%E5%BF%97%E5%92%8C%E8%AE%A1%E7%AE%97%E5%9B%BE?sort_id=4097825 -->
一、问题现象(附报错日志上下文): ***注***:目前paddle-lite使用此方法在程序退出前调用aclFinalize(),也有[相关的issue](https://github.com/PaddlePaddle/Paddle-Lite/issues/9087)指出遇到同样的segmetnation fault问题。此问题在[opencv dnn中实现cann后端](https://github.com/opencv/opencv/pull/22258)时发现。 多次执行会有不同的报错,总的来说观察到有以下三种(或更多): 1. Segmentation fault (core dumped) 2. double free or corruption (!prev) 3. bus error 二、软件版本: -- CANN 版本 (e.g., CANN 3.0.x,5.x.x): 5.1.RC2.alpha007 --Tensorflow/Pytorch/MindSpore 版本: 无 --Python 版本 (e.g., Python 3.7.5): 3.7.5 -- MindStudio版本 (e.g., MindStudio 2.0.0 (beta3)): 无 --操作系统版本 (e.g., Ubuntu 18.04): Ubuntu 18.04.1 LTS 三、测试步骤: 1. 源代码中使用atexit调用aclFinalize: ```cpp static void finalizeAscend() { std::cout << "Exiting ... " << std::endl; aclFinalize(); // can only be called once in one process } void initACL() { static std::mutex mtx; static bool initialized = false; mtx.lock(); if (!initialized) { aclInit(NULL); atexit(finalizeAscend); initialized = true; } mtx.unlock(); } int main() { // 申请管理资源 initACL(); // 其他代码... } ``` 2. 编译,运行,可以得到正确结果,但在程序退出时会触发segmentation fault错误。错误日志在第四部分。 四、日志信息: ``` // 忽略前面日志 Exiting ... double free or corruption (!prev) [1] 22843 abort (core dumped) ./build/matmuldebug $ [ERROR] TBE(22963,python3):2022-09-15-14:42:30.311.177 [../../../../../../latest/python/site-packages/tbe/common/repository_manager/utils/repository_manager_log.py:29][log] [../../../../../../latest/python/site-packages/tbe/common/repository_manager/utils/common.py:97][repository_manager] The main process does not exist. We would kill multiprocess manager process: 22854. [ERROR] TBE(22959,python3):2022-09-15-14:42:30.358.406 [../../../../../../latest/python/site-packages/tbe/common/repository_manager/utils/repository_manager_log.py:29][log] [../../../../../../latest/python/site-packages/tbe/common/repository_manager/route.py:72][repository_manager] Subprocess[task_distribute] raise error[] Process ForkServerProcess-3: Traceback (most recent call last): File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/process.py", line 297, in _bootstrap self.run() File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/process.py", line 99, in run self._target(*self._args, **self._kwargs) File "/usr/local/Ascend/ascend-toolkit/latest/python/site-packages/tbe/common/repository_manager/route.py", line 73, in wrapper raise exp File "/usr/local/Ascend/ascend-toolkit/latest/python/site-packages/tbe/common/repository_manager/route.py", line 70, in wrapper func(*args, **kwargs) File "/usr/local/Ascend/ascend-toolkit/latest/python/site-packages/tbe/common/repository_manager/route.py", line 371, in task_distribute key, func_name, detail = task_queue.get() File "<string>", line 2, in get File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/managers.py", line 819, in _callmethod kind, result = conn.recv() File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/connection.py", line 250, in recv buf = self._recv_bytes() File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/connection.py", line 407, in _recv_bytes buf = self._recv(4) File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/connection.py", line 383, in _recv raise EOFError EOFError [ERROR] TBE(22958,python3):2022-09-15-14:42:31.184.824 [../../../../../../latest/python/site-packages/tbe/common/repository_manager/utils/repository_manager_log.py:29][log] [../../../../../../latest/python/site-packages/tbe/common/repository_manager/route.py:72][repository_manager] Subprocess[server] raise error[[Errno 32] Broken pipe] Process ForkServerProcess-2: Traceback (most recent call last): File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/process.py", line 297, in _bootstrap self.run() File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/process.py", line 99, in run self._target(*self._args, **self._kwargs) File "/usr/local/Ascend/ascend-toolkit/latest/python/site-packages/tbe/common/repository_manager/route.py", line 73, in wrapper raise exp File "/usr/local/Ascend/ascend-toolkit/latest/python/site-packages/tbe/common/repository_manager/route.py", line 70, in wrapper func(*args, **kwargs) File "/usr/local/Ascend/ascend-toolkit/latest/python/site-packages/tbe/common/repository_manager/route.py", line 300, in server while not server_event.is_set(): File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/managers.py", line 1088, in is_set return self._callmethod('is_set') File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/managers.py", line 818, in _callmethod conn.send((self._id, methodname, args, kwds)) File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/connection.py", line 206, in send self._send_bytes(_ForkingPickler.dumps(obj)) File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/connection.py", line 404, in _send_bytes self._send(header + buf) File "/usr/local/python3.7.5/lib/python3.7/multiprocessing/connection.py", line 368, in _send n = write(self._handle, buf) BrokenPipeError: [Errno 32] Broken pipe /usr/local/python3.7.5/lib/python3.7/multiprocessing/semaphore_tracker.py:144: UserWarning: semaphore_tracker: There appear to be 91 leaked semaphores to clean up at shutdown len(cache)) ``` <!-- xxxx 请根据自己的运行环境参考以下方式搜集日志信息,如果涉及到算子开发相关的问题,建议也提供UT/ST测试和单算子集成测试相关的日志。 日志提供方式: 将日志打包后作为附件上传。若日志大小超出附件限制,则可上传至外部网盘后提供链接。 获取方法请参考wiki: https://gitee.com/ascend/modelzoo/wikis/%E5%A6%82%E4%BD%95%E8%8E%B7%E5%8F%96%E6%97%A5%E5%BF%97%E5%92%8C%E8%AE%A1%E7%AE%97%E5%9B%BE?sort_id=4097825 -->
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