Comment 11 for bug 1818547

It happens in 4.20-rc1, so should I try to bisect between 4.19 and 4.20-rc1?

I gave that a shot, but after labeling the first try "bad", the next make gave me:

...
dpkg-source: warning: no source format specified in debian/source/format, see dpkg-source(1)
dpkg-source: info: using source format '1.0'
dpkg-source: warning: source directory 'linux' is not <sourcepackage>-<upstreamversion> 'linux-4.19.0-rc8+-4.19.0-rc8+'
dpkg-source: warning: .orig directory name linux.orig is not <package>-<upstreamversion> (wanted linux-4.19.0-rc8+-4.19.0-rc8+.orig)
dpkg-source: info: building linux-4.19.0-rc8+ using existing linux-4.19.0-rc8+_4.19.0-rc8+.orig.tar.gz
dpkg-source: info: building linux-4.19.0-rc8+ in linux-4.19.0-rc8+_4.19.0-rc8+-1.diff.gz
dpkg-source: error: cannot represent change to vmlinux-gdb.py:
dpkg-source: error: new version is symlink to /opt/kernel/linux/scripts/gdb/vmlinux-gdb.py
dpkg-source: error: old version is nonexistent
dpkg-source: warning: ignoring deletion of file .scmversion, use --include-removal to override
dpkg-source: warning: the diff modifies the following upstream files:
...
dpkg-source: info: use the '3.0 (quilt)' format to have separate and documented changes to upstream files, see dpkg-source(1)
dpkg-source: error: unrepresentable changes to source
dpkg-buildpackage: error: dpkg-source -i.git -b linux subprocess returned exit status 1
scripts/package/Makefile:71: recipe for target 'deb-pkg' failed
make[1]: *** [deb-pkg] Error 1
Makefile:1357: recipe for target 'deb-pkg' failed
make: *** [deb-pkg] Error 2

So I'm not sure where to go from here.