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 A319A13FEE for ; Sun, 19 Nov 2023 16:47:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="U3wgarXX" Received: by smtp.kernel.org (Postfix) with ESMTPS id 27877C433CC for ; Sun, 19 Nov 2023 16:47:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1700412471; bh=phxqc9rlDWHzLk6JWsDp58afweCaV4Yq1gIiT9alI7o=; h=From:To:Subject:Date:In-Reply-To:References:From; b=U3wgarXXGX8vVGxkOFyM+RvWnIbh3xBBxWOh2y+j9dXmcD8/5I1jBO3fFb6t26Sp0 tSX3MIt8GcAeZgAVWjmfmzUEkYAtHNwb6/W+75cX2quTKxBoB2KnSPMz8rTir9TBPl JREjofiAnEPhjpGnsCdNofYf5K1owmedhzuMMZ50qIKs/03xh0PEM8q1GIQkFao3nz OmNdwRjqIF+8ziQCe0fB4nbnvKLhbmLBKbTn+0MvLu0OoociKkMuMgXGzCBmz0YwnU hqrp3swERVAcFSQ0KncdVuDRXYhGb8Z6l7mkTAkxadov+VAlDxTPHBCUxyHLTjfzqP PUnBcssdw1D8g== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 10A89C53BC6; Sun, 19 Nov 2023 16:47:51 +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, 19 Nov 2023 16:47:50 +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: stern@rowland.harvard.edu 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: attachments.created 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 #15 from Alan Stern (stern@rowland.harvard.edu) --- Created attachment 305425 --> https://bugzilla.kernel.org/attachment.cgi?id=3D305425&action=3Dedit Diagnostics for overlapped DMA mapping I just tried booting a kernel with CONFIG_DMA_API_DEBUG enabled. When I plugged in a hub and then plugged some devices into that hub, nothing went wrong. So since I can't do any useful testing here, maybe one of you can test the attached patch. It won't fix anything but it should help confirm what's happening and provide a starting point for further debugging. --=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.=