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 3C94652F66 for ; Thu, 30 Nov 2023 19:35:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="dbvvCwug" Received: by smtp.kernel.org (Postfix) with ESMTPS id A465DC433CC for ; Thu, 30 Nov 2023 19:35:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1701372902; bh=keA5SAXwktWFzY6Yf+Fz6Qgzdt64sbkehJrJd0s3CEk=; h=From:To:Subject:Date:In-Reply-To:References:From; b=dbvvCwugtxfl+IHgRi6qPM1paqKv3ms/kCOJNc3Bhi8tsBB4orM43c5DkMkJfCCqI 75cAiBTTGdluUCR7hAZWHJoa7Zq59w4fAUfE1OeFNv//dcB01OxoRBOvgCXuLMliFx UyaxgmRKFsCdv9BcOHUSsTzHioHXy1CX30szvYxBxjK4UOqR92nVVOEsd1D9CCSpnG ozX351k+Cc4T+n0s7IqJ2U6mbNIIka56WxC70BdQdAwVsM3jbeHKTvuthnMPEv5N/f k/2JK9rEWG24BpTkR0BH0ailgb/akDSZseWDQEyDP2LsakvcBkdp0sPxK0/Q14YuGv PTw6tXbUB5FEw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 91554C53BCD; Thu, 30 Nov 2023 19:35:02 +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: Thu, 30 Nov 2023 19:35:01 +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 #38 from Ferry Toth (ferry.toth@elsinga.info) --- With Catalin Marinas's suggestion "force the kmalloc() min align to cache_line_size()" + attachment 305473 root@yuna:~# journalctl -k | grep hub=20=20 kernel: usbcore: registered new interface driver hub kernel: hub 1-0:1.0: USB hub found kernel: usb usb1: hub buffer at 71c7180, status at 71c71c0 kernel: hub 1-0:1.0: 1 port detected kernel: hub 2-0:1.0: USB hub found kernel: usb usb2: hub buffer at 71c79c0, status at 71c7a00 kernel: hub 2-0:1.0: 1 port detected kernel: hub 1-1:1.0: USB hub found kernel: usb 1-1: hub buffer at 65b36c0, status at 6639340 kernel: hub 1-1:1.0: 7 ports detected and stack trace goes away. IOW the 2 root hub kmalloc() are now also aligned to the cache line size, e= ven though these never triggered the stack trace. Strange: hub's status is alig= ned far away from hub buffer. --=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.=