From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E70CDC433F5 for ; Fri, 30 Sep 2022 12:32:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230461AbiI3McO (ORCPT ); Fri, 30 Sep 2022 08:32:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53758 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230401AbiI3McM (ORCPT ); Fri, 30 Sep 2022 08:32:12 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D5A661114CF for ; Fri, 30 Sep 2022 05:32:11 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 72A4D622EB for ; Fri, 30 Sep 2022 12:32:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id D31C8C433B5 for ; Fri, 30 Sep 2022 12:32:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1664541130; bh=Y6w3kK9p8irnDPWj5uzQ0wR2J7QZrcFaUoLPoW9hFnw=; h=From:To:Subject:Date:In-Reply-To:References:From; b=XV7Pw/+UKkm1eilFtwpXKy9lU7ocYHKM7CUnAJuOmE+c5ONIYQP+zLTszUJHmqYEI WGseKNjnAkOQTp+ihRBQPDn1zrf3L/c8Z91amytATQLbHCLtLAFDC5M2A3mV4gWAEX jIqlHZC4utZ7OndtynxzZkKdnmA8tq4XjbrKoDQo+okIEZGFOh2/ZnBaBHvuIcxpuw ZEcfGGoziFxyFcYdtQamow89Io04c3uhNQDob6oI31Z1Bekto6h8w6cycXlUrPMIaw bDjvltCawryUmRu1PjDY4LCgpJ588gYXqnDZiBq+CbwfuEwi1hRQzqeGYW1n4fkcnE yQcHOUcy3qt+A== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id BF536C433E6; Fri, 30 Sep 2022 12:32:10 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 216543] kernel NULL pointer dereference usb_hcd_alloc_bandwidth Date: Fri, 30 Sep 2022 12:32:10 +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: gregkh@linuxfoundation.org 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 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D216543 --- Comment #5 from gregkh@linuxfoundation.org --- On Fri, Sep 30, 2022 at 11:38:46AM +0000, bugzilla-daemon@kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=3D216543 >=20 > --- Comment #4 from Nazar Mokrynskyi (nazar@mokrynskyi.com) --- > Created attachment 301906 > --> https://bugzilla.kernel.org/attachment.cgi?id=3D301906&action=3Dedit > kernel log from first crash >=20 > Previously uploaded file is from second log snippet, this is the first one > for > completeness since stack traces are slightly different there. The log file is full of warnings and other messages way before USB is ever involved. You might want to resolve those first. Anyway, yes, the device disconnects itself from the USB bus which is an electrical event and the video driver fails trying to send data to it, and then things blow up again. As there is a real solution for this (fix the cable), I recommend doing that first :) thanks, greg k-h --=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.=