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 4903F3595D for ; Sat, 21 Feb 2026 01:12:34 +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=1771636354; cv=none; b=JQESD3N6SDvORYxRI2TAg59pZu4imx2GiludyBctwDdIe6Cg16HxFhMR7brJ9y33A+rP7yewkrcic7jT6j3cg/HYNATIRHJjsDhbhB/hRGB0iTDchQWruHFP2U2b7T87T3Gxij6AJRy6DIbagokzTrbAOIu+id9YGBcaOcllMNg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771636354; c=relaxed/simple; bh=gC9aIGtf4NaEN8sx3JD2kFb4GMv60dX2vroGX5as7LU=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=H2uNcH3WYIscWiq9jg7FsrCnOTbMzaWjsLZdZw6gI78o/Ycm9/xFHY82vKSwOvhUc6pi8AkyXp1lturDwtbOxjmsWTG2tu+vo9afVWdUL/AQ9+E8xQBapFoJCL5SpGatD9YUA+fd7x7vq6xjrMHnxqy42Gi75wWw+yBbNN/vhAM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=h6mXMqo5; 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="h6mXMqo5" Received: by smtp.kernel.org (Postfix) with ESMTPS id D1D88C116D0 for ; Sat, 21 Feb 2026 01:12:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771636353; bh=gC9aIGtf4NaEN8sx3JD2kFb4GMv60dX2vroGX5as7LU=; h=From:To:Subject:Date:In-Reply-To:References:From; b=h6mXMqo5FWhN4/SO+kvbqCnORh6MVc/CdDWZT6Nf4l/A3S3l53LWQfqA5JmKQn4x3 45sjSUI7id+ulh9ulQVUFWFqVgWLil7c7tk592RV1Ux2OQn0YcO+6Y1B9pHm4nJRbH PzDmm6DzBEmwbYHMYxyghwGL26RS3oLGBpuxy9wQTEJxomNHYZehWN24PIURn6hd1Z UiV1qRb96lHEZ4cI4pjdiH+KpRAweynIOPaRdnhvQVO7/f8PT0naoSxt3GphsSifLz c4dAPAawzIhYjTd36GjvOfkWesOFj5SOMVAprKEOKhRXzsqI8FASPzNA6dJnNXQQyM SzFpAiuiTnxuQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id C481FC3279F; Sat, 21 Feb 2026 01:12:33 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 221103] xhci_hcd: System lockup under CPU load during usbfs polling of USB devices on AMD platforms Date: Sat, 21 Feb 2026 01:12:33 +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: paul@unnservice.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=3D221103 --- Comment #15 from Paul Alesius (paul@unnservice.com) --- (In reply to Alan Stern from comment #14) > Have you tried disabling runtime PM? Run any of the test scenarios after > booting with "usbcore.autosuspend=3D-1" on the boot command line. Disabling runtime PM for USB has eliminated the freeze, tested with hammeri= ng all devices too for 40 minutes. ---- Other logs: With runtime PM enabled, I see this in dmesg on every boot: [ 17.918387] xhci_hcd 0000:78:00.0: WARN: xHC CMD_RUN timeout [ 17.918508] xhci_hcd 0000:78:00.0: PM: suspend_common(): xhci_pci_suspend returns -110 [ 17.918586] xhci_hcd 0000:78:00.0: can't suspend (hcd_pci_runtime_suspend returned -110) But 0000:78:00.0 is a different controller than the root hub that triggers = the freeze. Here's lsusb with controller information: 0000:0e:00.0 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 0000:0e:00.0 Bus 001 Device 002: ID 13d3:3588 IMC Networks Wireless_Device (Internal) 0000:0e:00.0 Bus 001 Device 003: ID 0b05:19af ASUSTek Computer, Inc. AURA L= ED Controller (Internal) 0000:0e:00.0 Bus 001 Device 004: ID 046d:c548 Logitech, Inc. Logi Bolt Rece= iver (Plugged in) 0000:0e:00.0 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub 0000:10:00.0 Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 0000:10:00.0 Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub 0000:78:00.0 Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub (xhci_pci_suspend -110) 0000:78:00.0 Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub (xhci_pci_suspend -110) 0000:7a:00.3 Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 0000:7a:00.3 Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub 0000:7a:00.4 Bus 009 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 0000:7a:00.4 Bus 010 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub (Triggers freeze with runtime PM) 0000:7b:00.0 Bus 011 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub --=20 You may reply to this email to add a comment. 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