Comments (4)
zkrx
commented on June 18, 2024
1
I installed GDB 13.1 (from here: https://raw.githubusercontent.com/archlinux/svntogit-community/531f42bb21a34e9a291247e6eee744931061c83a/trunk/PKGBUILD) in an attempt to debug with symbols and the bug is gone. So I guess that they fixed it upstream already!
Sorry for the noise and thanks for this awesome dashboard!
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cyrus-and
commented on June 18, 2024
This is likely a GDB bug (like #154 was), IMHO I shouldn't be able to crash GDB using its Python API, even if I wanted to.
You can try to identify which module causes the issue (start with no modules at all), my bet is on some modules that prints values from the inferior, just like the aforementioned issue. You can follow a similar approach to try to pinpoint the root cause.
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zkrx
commented on June 18, 2024
I could reproduce the issue with GDB 12.1. I got the following stack trace (sadly missing a lot of symbols):
─── Output/messages ──────────────────────────────────────────────────────────── [0/0]
0x08101c84 in ?? ()
Fatal signal: Segmentation fault
----- Backtrace -----
0x4c1515 ???
0x5a60cf ???
0x5a613f ???
0x7f1493651f4f ???
0x7ef471 ???
0x7f3e67 ???
0x542376 ???
0x542e3c ???
0x68c734 ???
0x7f14944fabad cfunction_call
Objects/methodobject.c:543
0x7f14944c0471 _PyObject_Call
Objects/call.c:305
0x7f149446e7c6 do_call_core
Python/ceval.c:5943
0x7f149446e7c6 _PyEval_EvalFrameDefault
Python/ceval.c:4277
0x7f1494580d9f _PyEval_EvalFrame
./Include/internal/pycore_ceval.h:46
0x7f1494580d9f _PyEval_Vector
Python/ceval.c:5065
0x7f1494470f98 _PyObject_VectorcallTstate
./Include/cpython/abstract.h:114
0x7f1494470f98 PyObject_Vectorcall
./Include/cpython/abstract.h:123
0x7f1494470f98 call_function
Python/ceval.c:5891
0x7f1494470f98 _PyEval_EvalFrameDefault
Python/ceval.c:4198
0x7f1494580d9f _PyEval_EvalFrame
./Include/internal/pycore_ceval.h:46
0x7f1494580d9f _PyEval_Vector
Python/ceval.c:5065
0x7f1494470f98 _PyObject_VectorcallTstate
./Include/cpython/abstract.h:114
0x7f1494470f98 PyObject_Vectorcall
./Include/cpython/abstract.h:123
0x7f1494470f98 call_function
Python/ceval.c:5891
0x7f1494470f98 _PyEval_EvalFrameDefault
Python/ceval.c:4198
0x7f1494580d9f _PyEval_EvalFrame
./Include/internal/pycore_ceval.h:46
0x7f1494580d9f _PyEval_Vector
Python/ceval.c:5065
0x7f14944c2d25 _PyObject_VectorcallTstate
./Include/cpython/abstract.h:114
0x7f14944c2d25 method_vectorcall
Objects/classobject.c:53
0x7f149446f9f1 _PyObject_VectorcallTstate
./Include/cpython/abstract.h:114
0x7f149446f9f1 PyObject_Vectorcall
./Include/cpython/abstract.h:123
0x7f149446f9f1 call_function
Python/ceval.c:5891
0x7f149446f9f1 _PyEval_EvalFrameDefault
Python/ceval.c:4231
0x7f1494580d9f _PyEval_EvalFrame
./Include/internal/pycore_ceval.h:46
0x7f1494580d9f _PyEval_Vector
Python/ceval.c:5065
0x7f14944c2c2c _PyObject_VectorcallTstate
./Include/cpython/abstract.h:114
0x7f14944c2c2c method_vectorcall
Objects/classobject.c:83
0x7f14944c0d0b _PyObject_VectorcallTstate
./Include/cpython/abstract.h:114
0x7f14944c0d0b object_vacall
Objects/call.c:734
0x7f14944c10ee PyObject_CallFunctionObjArgs
Objects/call.c:841
0x69634a ???
0x6aae6b ???
0x69be61 ???
0x60192d ???
0x5f5416 ???
0x5ff9ec ???
0x6fe3cd ???
0x880204 ???
0x88038f ???
0x6301e4 ???
0x631e94 ???
0x416c44 ???
0x7f149363c78f ???
0x7f149363c849 ???
0x41c581 ???
0xffffffffffffffff ???
---------------------
A fatal error internal to GDB has been detected, further
debugging is not possible. GDB will now terminate.
This is a bug, please report it. For instructions, see:
<https://www.gnu.org/software/gdb/bugs/>.
Segmentation fault (core dumped)
This happens very early on boot. I can no longer reproduce once in e.g. main(). Not true, not sure when and why it happens exactly.
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cyrus-and
commented on June 18, 2024
Good to know! Not at all, and thanks for your deep dive into this.
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