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Tue, 25 Aug 2026 03:15:18 -0700 (PDT) Date: Tue, 25 Aug 2026 15:45:15 +0530 From: Lovekesh Solanki To: Mario Limonciello Cc: Mathieu Fluhr , Michal Pecio , Thorsten Leemhuis , Mathias Nyman , linux-usb@vger.kernel.org, regressions@lists.linux.dev, stable@vger.kernel.org, linux-kernel@vger.kernel.org, Forest , Slavik Dev Subject: Re: [REGRESSION] 6.12.36+: usb: hub: post-resume delayed work triggers > uncorrected MCE / data fabric sync flood on Threadripper 7970X > (bisected to aec11e5f9c45) Message-ID: References: <07435e6b-ee30-4c85-8c8b-0ce3a4ead1d9@leemhuis.info> <20260823174059.46fec036.michal.pecio@gmail.com> <226b2f34-fa25-4ca6-8afb-0b3dc942715c@amd.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <226b2f34-fa25-4ca6-8afb-0b3dc942715c@amd.com> On Mon, Aug 24, 2026 at 05:09:02PM -0500, Mario Limonciello wrote: > The behavior that is described here sounds like a platform firmware bug to > me. Are you on the latest BIOS available from your OEM? > > Can you please confirm: > > 1. Your CPU model number/codename > 2. Your OEM (from /sys/class/dmi/id) > 3. OEM BIOS version (from /sys/class/dmi/id) > 4. AGESA version (see commit bc91133e260c8113c1119073c03b93c12aa41738 if the > OEM didn't tear it out. Otherwise look in BIOS menus)? Though the issue's only reproducible in kernels including commmit 8f5b7e2bec1c36, which their bisection showed too. Could the trigger not be the 200ms SS hold? Regards, Lovekesh