import torch Segmentation fault

这两天发现开发环境坏了，查看原因，发现是import torch出现段错误。

python -c "import torch"
Segmentation fault (core dumped)

调试出现如下信息

gdb python
(gdb) r -c "import torch"
Starting program: /home/username/.local/bin/python -c "import torch"
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
type_qualname (type=0x555558790100, context=0x0) at Objects/typeobject.c:479
479     Objects/typeobject.c: No such file or directory.

(gdb) bt
#0  type_qualname (type=0x555558790100, context=0x0) at Objects/typeobject.c:479
#1  0x000055555562bae2 in type_getattro (type=0x555558790100, name=0x7ffff6ff02b0) at Objects/typeobject.c:3401
#2  0x000055555560477b in PyObject_GetAttrString (name=, v=0x555558790100) at Objects/object.c:795

解决：

不要把libtorch库的路径添加到LD_LIBRARY_PATH , 

用命令清除: unset LD_LIBRARY_PATH

在文件.bashrc  .profile  /etc/profile 里查看是否清除。