From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BB739331EA8 for ; Sun, 23 Aug 2026 16:40:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787503252; cv=none; b=WttMyHqIJAfMrwxEJTZG1WDOrH8QErF6i3fUTcnrY0aic3e612Nqns0VtccsRenwo7fT7E/VyNw4d2UK8fluOkC2NOshTZfRBjTP5KCX8RFzirHO53BupsStqW/waMIjF31yEnqI2Hth1H60NcmWkb0kAcFJAQZzUYjLj9WoW9c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787503252; c=relaxed/simple; bh=/BmFo+4B8BJKStw9tjIO+Mf+W4Ya7v8vTOq0zh8E4jM=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=fdJsPOjhNYzXzLeEAKizLizSV9+Jxsbanw5p6pZf44aA1rFPpIcserP9EasSILt+pgjgQy+OVqQI/IBfIiWp7Ep5yCUJdxUU3U6aXk0+wH0C9vZIqWGu0RINBfAaGaMjxzngKMYEzpChxjtHBhpTD68/5Mhzfnf16vxkdHxBBhE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TSt4fWTv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TSt4fWTv" Received: by smtp.kernel.org (Postfix) with ESMTPS id 2BCC1C2BCFB for ; Sun, 23 Aug 2026 16:40:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1787503252; bh=/BmFo+4B8BJKStw9tjIO+Mf+W4Ya7v8vTOq0zh8E4jM=; h=From:To:Subject:Date:In-Reply-To:References:From; b=TSt4fWTvNMGI6GPwnqnQ03bFrZLShx4KAXEEeQhBmHCmFOo5AIzOdC48hwndjQYa7 oTJzi5/iUSVjJF7dXFxkGPHR+bJMdb0lEtRlH8v2w5vPZzOoXuUDSjZ0yjRcotvILE Ria5o4BOZtHg6v+pAtmgbHlSp+Mbd7MqNdnNbcpabRh0tp7hSyIdgOqDFB5oJNZ5t5 xtJQiERu0T/Ff5BAWU2NjXm2ZIOYHxB+cnos5Rz2oFTVMsO1X8KAPf6o1gknlq1prw k4lju9mBGLUt9a/NvuaCqnhnz+UKo1bGnhAKidyqc+r3gmJQPfbnztCAaSH7eNVb7I KcjCRZXocUqYA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 108FFC433E1; Sun, 23 Aug 2026 16:40:52 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-pm@vger.kernel.org Subject: [Bug 221909] amd-pstate: Cezanne (Ryzen 7 5800U) data fabric sync flood on DC gated by CPPC max_perf Date: Sun, 23 Aug 2026 16:40:51 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Power Management X-Bugzilla-Component: cpufreq X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: high X-Bugzilla-Who: l.perneel@luperco.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: linux-pm@vger.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D221909 luc (l.perneel@luperco.com) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |l.perneel@luperco.com --- Comment #2 from luc (l.perneel@luperco.com) --- I would like to add the following link: https://gist.github.com/eliottness/ded6bce8163689dc426732d0670c7a28 which contains more background and tests done. There are several people hit by this issue, which was not a problem in older kernels. Not sure when it was introduced, but my machine has run more than a year stable, until an update caused it to take a newer kernel... since then= I have such a failure on average each 14 days. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=