On Tue, 4 Jan 2022 08:56:55 +0100, Christoph Hellwig wrote: > On Tue, Jan 04, 2022 at 04:53:15PM +0900, Akira Yokosawa wrote: >> Hmm, I can't reproduce this on docs-next. >> On which tree are you building RCU.pdf? > > Current linux-next. But I've also seen it with mainline from a few days > ago. > Still can't reproduce with sphinx-build 4.3.2 on Debian bullseye. What version of Sphinx are you using?