Re: [REGRESSION] 6.12.36+: usb: hub: post-resume delayed work triggers > uncorrected MCE / data fabric sync flood on Threadripper 7970X > (bisected to aec11e5f9c45)

Lovekesh Solanki <[email protected]> Tue, 25 Aug 2026 15:45:15 +0530

Newsgroups	dev.linux.lists.regressions,org.kernel.vger.linux-kernel,org.kernel.vger.linux-usb,org.kernel.vger.stable
Message-ID	<ao1qAlO8t9N3kfbZ@eggarch>

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