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 F010A19BD9 for ; Sun, 12 Nov 2023 20:46:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ueSsgoLD" Received: by smtp.kernel.org (Postfix) with ESMTPS id 698DEC433CB for ; Sun, 12 Nov 2023 20:46:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1699821969; bh=DCTVYPiLbdW1Ng5GHHU5suItQLo65EXdoJ8DUXgiqXs=; h=From:To:Subject:Date:In-Reply-To:References:From; b=ueSsgoLD4lDe4MHAng/gOM4zMzoGs8CMaARASZXr0UzBG3pYqIPExSxY497/HRUoQ SriCKLVbDocNa1bUuWEkTOIxscFu11im0Us1Wpprj/YArdiiKKgrpqV1joeUG/7ICT +KTDClh1ZGeJ8yfD+x7TmTwoKhr+jnbjXOlwL2NkcZ7RJ3skE1x2+wPV2T8fm3Ku3h wkeeugCHawYw8O5IHaWkwR8l6OxvpEK6xiCElF0kmUWb5HDF2IWsAXCJqeOehEkHCD 9xnHswaVuIH2AoSasiuKRZIhV/F1ym697QuXcU1/aYjRW+FtzWaLw18z/mwshIT06N C9J0eGmBCDfEw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 517BDC53BD4; Sun, 12 Nov 2023 20:46:09 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 215740] kernel warning: DMA-API: xhci_hcd: cacheline tracking EEXIST, overlapping mappings aren't supported Date: Sun, 12 Nov 2023 20:46:08 +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: ferry.toth@elsinga.info X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 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=3D215740 --- Comment #9 from Ferry Toth (ferry.toth@elsinga.info) --- Ok, it's different then in #6 above. smsc95xx behaves as a 5p hub, with an usb to ethernet adapter plugged into 1 port. So, 4 ports remain available to the user. The bug itself is likely located in hub.c. I can reproduce this with an ordinary 7p hub (EVB USB2517). Plugging the hub causes no issues. Then plugging an usb device (in my case I just plugged a mouse) into a port triggers the "cacheline tracking EEXIST". The warning occurs only once (regardless unplugging the device or the hub). Note that on Ubuntu 23.10 the warning does not occur, but they have most de= bug options not set. So, likely this is an old bug that has gone undetected for= a long while. --=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.=