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Python exception "AttributeError: module 'gdb' has no attribute 'Register'" #44

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Python exception "AttributeError: module 'gdb' has no attribute 'Register'"#44

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@agentzh
agentzh
opened on May 6, 2020

First of all, thank you for creating this debugger!

I'm trying out pycrash on Fedora 30 using the latest master branches of libdumpfile and this project but hit by a weird Python exception:

$ ./pycrash -m ~/tmp ~/tmp/./usr/lib/debug/lib/modules/2.6.32-754.24.3.el6.x86_64/vmlinux ~/tmp/bad-centos6-test2.core
Traceback (most recent call last):
  File "<string>", line 4, in <module>
  File "./build/lib/crash/__init__.py", line 5, in <module>
    import kdump.target
  File "./build/lib/kdump/target.py", line 16, in <module>
    TargetFetchRegisters = Callable[[gdb.InferiorThread, gdb.Register], None]
AttributeError: module 'gdb' has no attribute 'Register'
./test-gdb-compatibility.gdbinit:16: Error in sourced command file:
Error while executing Python code.
fatal: crash-python cannot initialize

How to work around this please? Thanks for your attention!

Activity

  1. tehcaster commented on May 7, 2020

    @tehcaster
    tehcaster
    on May 7, 2020
    Member

    Hi, sounds like you don't have the patched gdb that's required?

  2. problame commented on Feb 18, 2021

    @problame
    problame
    on Feb 18, 2021

    I am hitting the same issue on Debian bullseye.

    cs@debian-zfs-devel:[~/src/crash-python]: dpkg -l gdb
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version      Architecture Description
+++-==============-============-============-=================================
ii  gdb            10.1-1.7     amd64        GNU Debugger

    The docs only mention that gdb with python extensions and python >= 3.6 is required. AFAIK that is the case on my system. Still, I get that error.

  3. tehcaster commented on Feb 23, 2021

    @tehcaster
    tehcaster
    on Feb 23, 2021
    Member

    It's a bit unclear but it doesn't mean the standard python API in gdb, but extended with more patches, with a link to https://github.com/crash-python/gdb-python/tree/gdb-9.1-target that has them.

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