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 2CD96C433FE for ; Fri, 30 Sep 2022 11:41:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231617AbiI3Lln (ORCPT ); Fri, 30 Sep 2022 07:41:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231614AbiI3LlR (ORCPT ); Fri, 30 Sep 2022 07:41:17 -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 D7A2A14095 for ; Fri, 30 Sep 2022 04:33:01 -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 68D88622EB for ; Fri, 30 Sep 2022 11:33:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id CE971C433D6 for ; Fri, 30 Sep 2022 11:32:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1664537579; bh=wu/mqUww3JzUIuHnMzrpQZA/mEhZZH/z44S4g8ihwfA=; h=From:To:Subject:Date:In-Reply-To:References:From; b=I4SOWPIZ61Ccy4Pp67uwSoMFrDRBQDdt5xSDWjl1Bu/WHPmdK2CTdHcSwUApvgjN+ ZcIaPlZK6HpypkXgAC+CdejKt2O+90ai7/Cu7cRB/JGsedNSafcoS5kPQW31/RwlhY +4l0JiYEsBIKGgw+kitdV4OEgsPABamI4SyibYjoustC7kaMXZbLATABvvDR76BGtB IqKI3Gjwi75LHpkuvE7PjlojSoydyodxEhxz3c5NmlXc4wSKPG2uMfU4POaYo9lif+ yW52gbN5ThUjBGxcNEaU9PGuWa4l9OQofZCBZ9YSyqE20NSlrVouCD5fJDTwznc6HR RkGgJiLcXFYuA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id AA40EC433E4; Fri, 30 Sep 2022 11:32:59 +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 11:32:59 +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: nazar@mokrynskyi.com 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 #3 from Nazar Mokrynskyi (nazar@mokrynskyi.com) --- > That's really an unstable and unsupported system, sorry. If you fix your > cable it should work properly, right? Yes. And I totally understand that is not supported, the only reason I post= ed this is because it seemed to uncover some race condition in the code that m= ight be beneficial to fix. > What about any kernel log messages from right before this crashed? > There should be some disconnect or other USB messages, right? Specifics here would be good to see. Attached full kernel log. > This isn't good, we shouldn't crash when a device is removed, but this might be an issue with some reference counting. More log messages might help out here. Yes, that is the reason I decided to create a bug report, just hoping it is useful. --=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.=