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 D99CA1F37D3 for ; Fri, 20 Feb 2026 07:30:19 +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=1771572619; cv=none; b=BEDEWuaPgpvw+e7Fe0UoamSh4wnrxnKkYD6Plt679RfbOJwsug5GCSuzCaxTv/c/efZDYVI2hudPZn2XFr/k0fwokujhWT82o4B3Ou5zb6oSSs88nIGXLX3tVar5IojPeCC4VD3fuWTtPmevP/JE+LjMrg1g84MfPZmmIGly14I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771572619; c=relaxed/simple; bh=HVr+P1Vpf8UuCyt3cSQRARYc0iiOuQvO+74S7i878e8=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=PEJdOgAz6FWAcdYrtkHpZNAzaUPdJyU7lffDZDptH62MF4VNKiQY1YmBNRn+ja35o7oZdbkHIkm+4XH0js3ZJuGL4+sx3TGx/PAa8cxo3DOweigL5aKmMjATP43Aqdvn62WKjeuzJz2CeYng4wsKcCIK7KBmTzowo3LnSbwNEJo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UrtBMfeQ; 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="UrtBMfeQ" Received: by smtp.kernel.org (Postfix) with ESMTPS id 77AF9C116D0 for ; Fri, 20 Feb 2026 07:30:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771572619; bh=HVr+P1Vpf8UuCyt3cSQRARYc0iiOuQvO+74S7i878e8=; h=From:To:Subject:Date:In-Reply-To:References:From; b=UrtBMfeQ1Za6COuyKuwlu4QiZF9Bf/7wOqhojl21CoG9h75x25msDnFJz3PRg0whl CflLO76Da+DAE1d4D4/H7VsUFnqNh6Soe6igqMBVurnaXHUXOEGGW/KqEPwZSLz1A0 Me+2uJET3l0rt7jIwpypDycv+kSBatW6cyqzdbd8vxewqD2VrYa+tz8KcQjcVZjcBZ BWX01vuW7hQXiB9ZeWzEUuKV8qz3iloGdLOZsHyZWy+s1ScpEwMy0iRTv0guXqMeq6 YbO2socQsIHcHDot9ydLTs45g45PWVC39zTK4VMOQjDzEn10QdGsxx02wEO4auMHeO WWXx2CJBxHTxA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 5B785C3279F; Fri, 20 Feb 2026 07:30:19 +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: Fri, 20 Feb 2026 07:30:19 +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: michal.pecio@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: 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-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D221103 Micha=C5=82 Pecio (michal.pecio@gmail.com) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |michal.pecio@gmail.com --- Comment #1 from Micha=C5=82 Pecio (michal.pecio@gmail.com) --- I tried running this and all ioctl() fail with EPERM because the usbfs file= is opened read only. If it really crashes your system, the bug may be not in U= SB. Chances are that it's a panic so I'd try to get the kernel log - serial cab= le, netconsole or something like that. At the very least, connect a PS/2 keyboa= rd and see if the lights begin to blink. --=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.=