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[74.215.254.164]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8be30e986cesm70948585a.24.2025.12.15.16.54.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Dec 2025 16:54:48 -0800 (PST) Date: Mon, 15 Dec 2025 19:54:46 -0500 From: Adam Stylinski To: linux-pci@vger.kernel.org Cc: bhelgaas@google.com Subject: Kernel regression in 6.13 Message-ID: Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/2.2.14 (2025-02-20) Hello, I seem to be encountering a regression that prevents my system from booting. The regression occurred between 6.12 and 6.13. I've bisected it to this commit: 665745f274870c921020f610e2c99a3b1613519b Some info about this system: it's ancient. It's a Q9650 that I used as a mythbackend/frontend for over a decade. This booting failure on newer kernels finally forced my hand to buy new a "new" PCI Express based tuner and upgrade the system into the modern age. It boots via MBR on a P45 based chipset (A P5Q Plus board, to be precise). Given the age, I chalked the issue up to possibly some failing hardware or memory corruption that happened at compile time. I recently pulled the system back out again to do some performance testing in zlib-ng only to find out it hangs on the latest Ubuntu server ISO. I figured at this point it wasn't something specific to my kernel config / compilation and it's likely a regression. It's also old enough that I may be in the position of the only one having this problem, so I took it upon myself to bisect what was going on. Let me know if there's anything you'd like me to test or try.