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[98.38.17.99]) by smtp.googlemail.com with ESMTPSA id 46e09a7af769-7decae2b090sm5379676a34.24.2026.05.02.17.05.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 02 May 2026 17:05:42 -0700 (PDT) From: Jim Cromie Subject: [PATCH 0/5] PATCH 0/6] dyndbg: fix i386 alignment and KEEP module sections Date: Sat, 02 May 2026 18:05:31 -0600 Message-Id: <20260502-asm-generic-1-v1-0-1103ee0152df@gmail.com> Precedence: bulk X-Mailing-List: linux-modules@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/x3MQQqAIBBA0avErBvQMSO6SrQQnWwWWShEEN49a fkX779QOAsXmLsXMt9S5EwtdN+B312KjBJaAykalVWErhwYOTXlUaMhPw3kjA1BQTNX5k2e/7e stX7TyLOVXwAAAA== X-Change-ID: 20260502-asm-generic-1-32c842a35dd0 To: Arnd Bergmann , Jason Baron , Luis Chamberlain , Petr Pavlu , Daniel Gomez , Sami Tolvanen , Aaron Tomlin Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-modules@vger.kernel.org, Jim Cromie , Louis Chauvet X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1777766741; l=1850; i=jim.cromie@gmail.com; s=20260203; h=from:subject:message-id; bh=ZKEL+uQH1FOrD2/R13JXDbIEvC1fqmuy5poleA8Qdyg=; b=0SzOGfTU03sQ5R9xI9yMhs/DNczLBjWrIIsjqxHplD8PVcZD8haEy5tc2wMV+ZofojocTNtsX J+X5ddihN8HCiVN4bRkvrV2Yz3U7NrGITeQ/KmD6maKeu9oHya8DD61 X-Developer-Key: i=jim.cromie@gmail.com; a=ed25519; pk=C6E5ODlPQo7ZBynATXH9wg7K6HxP0pIXyf4s38Qw0XE= This series starts with a fix to a section misalignement on i386, and follows with cleanups and refactoring for reuse. When CONFIG_DRM_USE_DYNAMIC_DEBUG=Y (currently marked BROKEN) and CONFIG_DRM=y, the __dyndbg_classes section gets a single struct/record. On i386 this is 28-bytes, breaking the required ALIGN(8) on the following __dyndbg section. This breaks dynamic_debug_init() with a NULL pointer dereference; the section traversal logic encounters padding bytes instead of a valid descriptor. the series: 1. adds ALIGN(8) to the BOUNDED_SECTION_* macros 2. refactors BOUNDED_SECTION_* macros for later reuse 3. adds dyndbg.lds.S to KEEP sections in modules follows codetag.lds.h model 4. drops unused HEADERED_SECTION_* macros 5. removes redundant (after patch 1) ALIGN(8)s in vmlinux.lds.h 6. adds BOUNDED_SECTION_* _ALIGN variants, usea them in ORC_UNWIND_TABLE Signed-off-by: Jim Cromie --- Jim Cromie (5): vmlinux.lds.h: refactor BOUNDED_SECTION_* macros into bounded_sections.lds.h vmlinux.lds.h: drop unused HEADERED_SECTION* macros vmlinux.lds.h: Fix ALIGN(8) omission causing NULL ptr on i386 vmlinux.lds.h: remove redundant ALIGN(8) directives dyndbg.lds.S: fix lost dyndbg sections in modules MAINTAINERS | 1 + include/asm-generic/bounded_sections.lds.h | 32 +++++++++++++++++ include/asm-generic/dyndbg.lds.h | 19 ++++++++++ include/asm-generic/vmlinux.lds.h | 58 +++++------------------------- scripts/module.lds.S | 2 ++ 5 files changed, 62 insertions(+), 50 deletions(-) --- base-commit: 254f49634ee16a731174d2ae34bc50bd5f45e731 change-id: 20260502-asm-generic-1-32c842a35dd0 Best regards, -- Jim Cromie