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Sun, 22 Feb 2026 18:38:22 -0800 (PST) Received: from archie.me ([210.87.74.117]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-826f2fc0c9esm2399402b3a.8.2026.02.22.18.38.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 22 Feb 2026 18:38:21 -0800 (PST) Received: by archie.me (Postfix, from userid 1000) id C59D2420AAB4; Mon, 23 Feb 2026 09:38:18 +0700 (WIB) Date: Mon, 23 Feb 2026 09:38:18 +0700 From: Bagas Sanjaya To: Linux Kernel Mailing List , Linux Documentation , Linux Regressions Cc: Mauro Carvalho Chehab , Randy Dunlap , Jonathan Corbet Subject: [REGRESSION BISECTED] Unexpected section title false positive warnings on DOC: directive Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline [this is actually a repost of [1] since that thread didn't get any attention from the regressor.] Hi, Building htmldocs on docs-next currenly produces about 80 new warnings; which all of them are unexpected section title on DOC: kernel-doc directive, like: /home/bagas/repo/linux-kernel/Documentation/driver-api/target:25: ./drivers/target/target_core_user.c:35: CRITICAL: Unexpected section title. Userspace I/O ------------- [docutils] WARNING: kernel-doc 'scripts/kernel-doc.py -rst -enable-lineno -function 'Userspace I/O' ./drivers/target/target_core_user.c' processing failed with: SystemMessage('/home/bagas/repo/linux-kernel/Documentation/driver-api/target:25: ./drivers/target/target_core_user.c:35: (SEVERE/4) Unexpected section title.\n\nUserspace I/O\n-------------') /home/bagas/repo/linux-kernel/Documentation/driver-api/target:28: ./include/uapi/linux/target_core_user.h:14: CRITICAL: Unexpected section title. Ring Design ----------- [docutils] WARNING: kernel-doc 'scripts/kernel-doc.py -rst -enable-lineno -function 'Ring Design' ./include/uapi/linux/target_core_user.h' processing failed with: SystemMessage('/home/bagas/repo/linux-kernel/Documentation/driver-api/target:28: ./include/uapi/linux/target_core_user.h:14: (SEVERE/4) Unexpected section title.\n\nRing Design\n-----------') These turns out to be false-positive as touching the source file in question (e.g. drivers/target/target_core_user.c) and making htmldocs again makes the regression go away for the corresponding docs. Bisection (with git-bisect(1)) points to bea467aa5da1f5 ("docs: media: v4l2-ioctl.h: document two global variables") as the first bad commit, even though that I suspect that bdd1cf87847ff6 ("kernel-doc: add support to handle DEFINE_ variables") may be the actual culprit (regressor). The full bisection log: git bisect start # status: waiting for both good and bad commits # bad: [7f3c3a0a9103dc92c823f27db3284ac2914e7558] MAINTAINERS: Add doc files on real-time support to Real-time Linux git bisect bad 7f3c3a0a9103dc92c823f27db3284ac2914e7558 # status: waiting for good commit(s), bad commit known # good: [9448598b22c50c8a5bb77a9103e2d49f134c9578] Linux 6.19-rc2 git bisect good 9448598b22c50c8a5bb77a9103e2d49f134c9578 # bad: [5188f6bd408f937d81c0c37eb59ddc1035cd912c] docs: admin: devices: /dev/sr for SCSI CD-ROM git bisect bad 5188f6bd408f937d81c0c37eb59ddc1035cd912c # bad: [bea467aa5da1f51834501da3ac3c40204027a221] docs: media: v4l2-ioctl.h: document two global variables git bisect bad bea467aa5da1f51834501da3ac3c40204027a221 # good: [82e87387f6e2af9f69a7528733e953fd22e815aa] Documentation: kernel-hacking: Remove comma git bisect good 82e87387f6e2af9f69a7528733e953fd22e815aa # good: [bdd1cf87847ff6aaadd53a185209d2bb2db72165] kernel-doc: add support to handle DEFINE_ variables git bisect good bdd1cf87847ff6aaadd53a185209d2bb2db72165 # first bad commit: [bea467aa5da1f51834501da3ac3c40204027a221] docs: media: v4l2-ioctl.h: document two global variables Mauro: Since you're the author of regressor, can you please take a look on it? Thanks. #regzbot introduced: bea467aa5da1f5 [1]: https://lore.kernel.org/regressions/aUuLHzk5jdyBAxD7@archie.me/ -- An old man doll... just what I always wanted! - Clara