[Stackless] a stackless crash
Kristján Valur Jónsson
kristjan at ccpgames.com
Fri Oct 26 16:16:28 CEST 2007
I have a crash case during early exit of stackless. The call stack is:
> python25_d.dll!slp_kill_tasks_with_stacks(_ts * ts=0x00000000) Line 344 + 0x31 bytes C
python25_d.dll!PyStackless_kill_tasks_with_stacks(int allthreads=1) Line 369 + 0x12 bytes C
python25_d.dll!Py_Finalize() Line 379 + 0x7 bytes C
blueD.dll!BluePyOS::Shutdown(int level=2) Line 899 + 0x8 bytes C++
blueD.dll!BlueOS::Shutdown() Line 554 + 0x17 bytes C++
ExeFileD.exe!ExeFile::Run() Line 286 + 0x19 bytes C++
ExeFileD.exe!WinMain_Guarded(HINSTANCE__ * hInstance=0x00400000, HINSTANCE__ * __formal=0x00000000, char * cmdline=0x00152325, HINSTANCE__ * __formal=0x00000000) Line 218 C++
ExeFileD.exe!WinMain(HINSTANCE__ * hInstance=0x00400000, HINSTANCE__ * hi2=0x00000000, char * cmdline=0x00152325, int arg=10) Line 146 + 0x15 bytes C++
ExeFileD.exe!__tmainCRTStartup() Line 589 + 0x35 bytes C
ExeFileD.exe!WinMainCRTStartup() Line 414 C
kernel32.dll!_BaseProcessStart at 4() + 0x23 bytes
And I am in the SLP_CHAIN_REMOVE macro.
the l and r variables are both null. That is why it crashes, it is trying to unlink a tasklet that has prev and next both equal to NULL.
Now, why does this happen? What is this code trying to do and is this a valid state for the tasklet object?
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