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 C03634C62 for ; Mon, 5 May 2025 10:53:25 +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=1746442405; cv=none; b=Tr8UJPDqSuBexSDX8v5xhE0ed6MNdwxiPQjA0K7ZGANRuDOuvHNlHibnt0S8/bHvWDG4IpEUSgOpF5rtOMjZYmrxn/autbaA2kX8wCRr9WZ/cKIiXlP41gW62ZeOBN7KuHKEoQsDvoo7I4/j5DE7/9zX4QehRAdh248srjXzSxU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746442405; c=relaxed/simple; bh=6uSjTKSPpR0rgjekaTVBC0kiIGXtdkco4f1wbZHquaA=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=dXc+TVAaBGBnkFZLy5t/InX6Aub7dt9F5LbOM31b3zX+Z3cVadyfOQ7VfxuqXtmjUAsx1ok07KjjbXoEpbPYy59tmNgAhlMw25qFemEWWGC1+tUIwZZnfhMr1ovinkNmSESI+CkJ82KFhr1l7cmy9IKZpTQp9+E1nj/287ikie8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MSc+dekO; 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="MSc+dekO" Received: by smtp.kernel.org (Postfix) with ESMTPS id 3E839C4CEF0 for ; Mon, 5 May 2025 10:53:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746442405; bh=6uSjTKSPpR0rgjekaTVBC0kiIGXtdkco4f1wbZHquaA=; h=From:To:Subject:Date:In-Reply-To:References:From; b=MSc+dekOup1UheJYrssKKhBLCleeeS0DTLL5nmlWIOyT3vLcQd6GVrloiTEhKdRr2 /HbNFy/fOJlRNgF4OjT+litpu8rS4rYhVHtaw6LaK4ytiY6DhWKbRdYw97YXVLbPVt ErYLWLTQbKoxWSHTgA+2tMs+tNxEIRMaFYiZ5eix0B7zP3DNdjwxdHOs4TixutBDt3 DUqU3ayPzMqnp56PVLJz/mwUrhtm8Ws0mQBeTkiQEjNg+Ccd2Na6iavaPN/s09Ss86 ThMtnKolcf+JZsAigAT5/UJyH+vcwgxgNYIyYlkkj3UR39E/NoBXI9KsHdloO1NH/H NNb3NW15IO3sQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 31E8BC41616; Mon, 5 May 2025 10:53:25 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 220069] [6.13.9] regression USB controller dies Date: Mon, 05 May 2025 10:53:24 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: USB X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: mathias.nyman@linux.intel.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: 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-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D220069 --- Comment #42 from Mathias Nyman (mathias.nyman@linux.intel.com) --- The two Reset Device commands followed by an Address Device command that Michal pointed out earlier could very well be the reason for the issue. Reset Device Command: slot 16 flags C Reset Device Command: slot 19 flags C Reset Device Command: slot 19 flags C Address Device Command: ctx 00000000fff42000 slot 19 flags b:C A Reset Device command will move the slot (device) to the Default address 0 state where only one device should be at a time. In default state the device waits for a address device commands to be given a unique address. Here we have both slots 16 and 19 in default state at the same time, and bo= th devices will try to respond to the address device command. Xhci section 4.5.3.4 "Default" has a note stating that:=20 "Software shall ensure that only one Device Slot is in the Default state at time,otherwise undefined behavior may occur." The commit 2b66ef84d0d2 "usb: hub: lack of clearing xHC resource" that Mich= al pointed out earlier looks like possible cause to me as well. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=