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[2604:1380:40f1:3f00::1]) by mx.google.com with ESMTPS id t26-20020a056a00139a00b006e6c185cd94si517197pfg.104.2024.03.13.07.02.16 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Mar 2024 07:02:17 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel+bounces-101576-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:40f1:3f00::1 as permitted sender) client-ip=2604:1380:40f1:3f00::1; Authentication-Results: mx.google.com; arc=pass (i=1 spf=pass spfdomain=pengutronix.de); spf=pass (google.com: domain of linux-kernel+bounces-101576-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:40f1:3f00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-101576-linux.lists.archive=gmail.com@vger.kernel.org" Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sy.mirrors.kernel.org (Postfix) with ESMTPS id 111C6B23296 for ; Wed, 13 Mar 2024 13:59:48 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id DBB0F4652D; Wed, 13 Mar 2024 13:59:31 +0000 (UTC) Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (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 CD2B046436 for ; Wed, 13 Mar 2024 13:59:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710338371; cv=none; b=iQm0PbCI3JK9OEvQ1UKKroHpSb0tD4yNKe8hnwUSu8Ng3Amin5uV7bCNONKricOt3dEGnSpPSe/YVO84tjEMYbgq3AdKdP4tFRlETV+afh9KvLhtZk62QF1ons+NOmo+VbBFKlCpHR0J+4nBN3uhd/rYPctOLbwkdSryUvsPSYU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710338371; c=relaxed/simple; bh=iPjtTXtGBNqqHtpmj/RD96a/h3FsCnTbifhUxkUft74=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=srWiVdnBNrhOhC+7QqvM74ME/GR4oPiyknqWVjsxqsst2YDEKtIzwqKbvXelCSRSJlRFYAgFzx1mSsxKyylKXCZ0Q2CUmcaEvAmAupCzUJkPROnwUZttsRDKXxjhHYsVF9cUeaQAvpnWIkKUCBFq4z8ho+zXU/TKlkDyvokWv6Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rkP8Q-0000WY-Vx; Wed, 13 Mar 2024 14:59:11 +0100 Received: from [2a0a:edc0:2:b01:1d::c5] (helo=pty.whiteo.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1rkP8K-0067ui-OF; Wed, 13 Mar 2024 14:59:04 +0100 Received: from ore by pty.whiteo.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1rkP8K-00FZqY-26; Wed, 13 Mar 2024 14:59:04 +0100 Date: Wed, 13 Mar 2024 14:59:04 +0100 From: Oleksij Rempel To: syzbot Cc: astrajoan@yahoo.com, davem@davemloft.net, edumazet@google.com, hdanton@sina.com, kernel@pengutronix.de, kuba@kernel.org, linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, linux@rempel-privat.de, mkl@pengutronix.de, netdev@vger.kernel.org, pabeni@redhat.com, robin@protonic.nl, socketcan@hartkopp.net, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [can?] possible deadlock in j1939_sk_queue_drop_all Message-ID: References: <00000000000095640f05cb78af37@google.com> <0000000000002755ce061389d67b@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <0000000000002755ce061389d67b@google.com> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-Accept-Language: de,en X-Accept-Content-Type: text/plain X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org #syz fix: can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |