[Bug gdb/34047] gdb Fatal signal: Bus error | SIGBUS (Misaligned address error)

https://sourceware.org/bugzilla/show_bug.cgi?id=34047

--- Comment #10 from Simon Marchi <simark at simark dot ca> ---
(In reply to k4lizen from comment #8)
> Here is how to reproduce the actual crash:
> 
> ```bash
> $ docker run -it --security-opt seccomp=unconfined
> ghcr.io/pwndbg/pwndbg:ubuntu24.04 /bin/bash
> # cd ~
> # apt update && apt install -y tmux 7zip
> # wget https://files.catbox.moe/fg6zkn.7z
> # 7z x fg6zkn.7z -psooreproducable
> # tmux
> $ ./exploit.py
> pwndbg> break __spawni_child
> pwndbg> continue
> pwndbg> continue
> ```

I tried with these instructions, and I do get a crash, I see this:

----- Backtrace -----
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb(_Z22gdb_internal_backtracev+0x49)[0x19c75d9]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb[0x1eff77f]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb(_Z15internal_verrorPKciS0_P13__va_list_tag+0x1b)[0x1eff5eb]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb(_Z18internal_error_locPKciS0_z+0x90)[0x24dc920]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb[0x1cdd2d6]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb(_Z24switch_to_thread_no_regsP11thread_info+0x90)[0x1eb43d0]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb(_Z16switch_to_threadP11thread_info+0x17)[0x1eb2a07]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb[0x1b91c57]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb(_Z8cmd_funcP16cmd_list_elementPKci+0x32)[0x1a01082]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb(_Z15execute_commandPKci+0x5be)[0x1ec078e]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb[0x1a07bf8]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb[0x1a0a1fb]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb[0x1ec0d02]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb(_Z20execute_fn_to_stringRNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEENS_8functionIFvvEEEb+0xad)[0x1ec0b5d]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb(_Z34execute_control_commands_to_stringP12command_lineib+0x5f)[0x1a0770f]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb[0x1d3586d]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/../../../../../../lib/libpython3.12.so.1.0(+0x1df4b8)[0x7f95d36f54b8]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/../../../../../../lib/libpython3.12.so.1.0(_PyObject_MakeTpCall+0x8f)[0x7f95d36987df]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/../../../../../../lib/libpython3.12.so.1.0(_PyEval_EvalFrameDefault+0x40ee)[0x7f95d36335ee]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/../../../../../../lib/libpython3.12.so.1.0(+0x4172bd)[0x7f95d392d2bd]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/../../../../../../lib/libpython3.12.so.1.0(_PyEval_EvalFrameDefault+0x8ec)[0x7f95d362fdec]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/../../../../../../lib/libpython3.12.so.1.0(+0x182d9e)[0x7f95d3698d9e]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/../../../../../../lib/libpython3.12.so.1.0(PyObject_CallFunctionObjArgs+0xae)[0x7f95d36992de]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb(_Z15evpy_emit_eventP7_objectP20eventregistry_object+0x75)[0x1cf3fa5]
/venv/lib/python3.12/site-packages/gdb_for_pwndbg/_vendor/bin/gdb(_Z17emit_exited_eventPKlP8inferior+0x169)[0x1cf49e9]
Backtrace might be incomplete.


This shows GDB hitting an internal error.  To investigate it, we'd probably
have to be able to reproduce it with a GDB compiled with debug info, so we can
debug it properly.

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