Hi Konstantin, As you might well be aware of, latest successful documentation build against linux-next at https://www.kernel.org/doc/html/next/ was that of next-20250606. I managed to reproduce the build error using debian bookworm's distro packages which can be close enough to Sphinx 5.3.0 used there. This is the error I got from "make htmldocs": ---------------------------------------------------------------- Extension error (automarkup): Handler <function auto_markup at 0x796307745bc0> for event 'doctree-resolved' threw an exception (exception: argument for warn() given by name ('stacklevel') and position (3)) ---------------------------------------------------------------- Bisection points to commit d6d1df92c25f ("docs: automarkup: Mark up undocumented entities too") queued in Jon's docs-next branch. Reverting it resolves the error, but honestly speaking, I don't have any plausible theory on how that change could cause such an issue. Actually, when I install Sphinx 5.3.0 by using venv and saying pip install "Sphinx<6.0" pyyaml on Ubuntu 24.04 today, said error doesn't reproduce. I'm not sure but there might have been some minor incompatibility between past versions of dependencies. I'd rather upgrade Sphinx to 8.2.3 (latest). Konstantin, could you try it? Thanks, Akira
