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In the case that building the parameters to the Python event callback fails, args was returned as NULL. We immediately tried to call Py_INCREF on this which crashed. Returning NULL means the Python function threw an exception, so print the exception and return (there is no way to return an error here - the event is lost). Reported-by: Yonatan Shtarkman See: https://listman.redhat.com/archives/libguestfs/2023-February/030653.html
Libguestfs is tools and a library for accessing and modifying guest disk images. For more information see the home page: http://libguestfs.org/ For discussion, development, patches, etc. please use the mailing list: http://www.redhat.com/mailman/listinfo/libguestfs To find out how to build libguestfs from source, read: docs/guestfs-building.pod http://libguestfs.org/guestfs-building.1.html man docs/guestfs-building.1 Copyright (C) 2009-2023 Red Hat Inc. The library is distributed under the LGPLv2+. The programs are distributed under the GPLv2+. Please see the files COPYING and COPYING.LIB for full license information. The examples are under a very liberal license.