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 D09B847CA78 for ; Tue, 1 Sep 2026 09:41:54 +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=1788255714; cv=none; b=WraJXNgVTDCU97NqIQnvDsysMD/iDuuKFCYPKxjE1QaXBLJKvyQmEu3tziSWvDSHi2mDPi5UgasWaBW6QE16UjmCo4pLpnlkgnLjPhFDKGs01tCu/Vt1Zdlm/S3rEy1GFDqkZTmOYb1muzFQtpvpw10+6CuoumlfuvEuOItDWMg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788255714; c=relaxed/simple; bh=1IdeQglcgfyOmS0L5IfWwQn5Kt1BEq6T3YqN/kce7EU=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=MQssvdpFP3W8zK8EF2nubhUK4HIniO3ubV44YrywdN8MoNyroUDXgaSfqau6yBl9TdhLAUmFDdLFda24Qa6IHL0tzP2cszeJx7SrXDTS0NTDmtI8ttRvG2rPMOF3yc+5TXuFeYHRm1I4RpUApBxVN5TzAUtRfM8ZU2SuGxInxNc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cPBNz8AL; 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="cPBNz8AL" Received: by smtp.kernel.org (Postfix) with ESMTPS id 0C147C2BCF5 for ; Tue, 1 Sep 2026 09:41:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1788255714; bh=1IdeQglcgfyOmS0L5IfWwQn5Kt1BEq6T3YqN/kce7EU=; h=From:To:Subject:Date:In-Reply-To:References:From; b=cPBNz8ALXPbcCzWWFnMPMQM836iV2u7Mxh78ceYoc5bvmfLI3B3n7JAUNyafQRDr5 CfgPu6H+29wYv792mlZBG6PET4pqDculJSVV1zKF7EUPKgPd4l/9g22Hsko3c00nP7 5GKImKQAORm184eZ4NjGh1YDOYWEzg3dwadyt7TpGrUQYRFiimDbvFfRvJAQj4lb8p UYG2ARfCxb5C/WMagPpN+CbCFhoIHI8MfGsBafGROIgCTFQyR7XerAldNOPh4n3TAv 1iARP4n1d9xCTCv6O4UTDTflYJn8p2CFVXR97qsChaTmivw6V8MLeXbS+9VFXvYIx+ pf7TdIphnU6Bg== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id EDFEFC41614; Tue, 1 Sep 2026 09:41:53 +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: Tue, 01 Sep 2026 09:41:53 +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: lovekeshsolanki00@gmail.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 #39 from Lovekesh Solanki (lovekeshsolanki00@gmail.com) --- (In reply to Micha=C5=82 Pecio from comment #38) > The only fully reliable workaround would be to characterize how long the = xHC > must stay asleep to reliably resume and add in-kernel timeouts to enforce > this limit, no matter what userspace (or kernel USB drivers) are trying to > do. Though there's no need for adding this workaround right if no real world situation ever hits this.. may just be extra complexity? --=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.=