From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 E445D801 for ; Wed, 15 Nov 2023 03:54:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from mail-pg1-f197.google.com (mail-pg1-f197.google.com [209.85.215.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 90E62D7 for ; Tue, 14 Nov 2023 19:54:06 -0800 (PST) Received: by mail-pg1-f197.google.com with SMTP id 41be03b00d2f7-5c1b9860846so1472168a12.2 for ; Tue, 14 Nov 2023 19:54:06 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700020446; x=1700625246; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=l61plfqF5nHarfz7jpK6i+deFeBGlZF1Gciyjaej1pU=; b=tYPw+6kIOj17AMNmH1RfeBjj2SSh3jTGNpSCVu5n+E8URuT18Gbqeis2BN/Sj1EM/2 Yil7gz/l2z+hxcJIAysDcGpY1uVyHpXP//mU8GaUgTFF7QnE9fhVGNehfvWbk3LBy0eZ 62lNjx5gXBwMRWVKJ8In/Vrf3F49cn0Obr9yOiXMORBJO/YFR5NyQCLapbtJeb+jPR0g qtbi1gXL22NDKV0pQlmFAjWmwKz73Jsao/eu6l60wJNKPR/uJSXrgsD0MKiexvXZR/RK yrJ3njUfchImyU6toel8vfQ5hM7F/PTy70bXL3sGhlIOJD7RGsdJZBh5mmCc8chN18y1 eJzg== X-Gm-Message-State: AOJu0Ywyub1ndDPrwOZREY7gaA8hTrZAcaC2fTY4N39myg0omgwcZhTA ewxP0KsPyQ0nf42L4fJqINBvDIvBoQQQPm8Y+DGUV/kXZjSR X-Google-Smtp-Source: AGHT+IF7oCUwCwgZD8xczyFHrZBrkFObiOTryGSeBv2U1eTP1+U0YLkF1/pd5Ws0MaLMfr04sNagBgqsvJlTEqQVYDltsdAuSXeY Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a65:40c3:0:b0:5b9:63f2:e4cc with SMTP id u3-20020a6540c3000000b005b963f2e4ccmr1080000pgp.2.1700020446008; Tue, 14 Nov 2023 19:54:06 -0800 (PST) Date: Tue, 14 Nov 2023 19:54:05 -0800 In-Reply-To: <0000000000008981d905ffa345de@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000cb9c3d060a28dad8@google.com> Subject: Re: [syzbot] [can?] possible deadlock in j1939_sk_errqueue (2) From: syzbot To: arnd@arndb.de, astrajoan@yahoo.com, bridge@lists.linux-foundation.org, davem@davemloft.net, dvyukov@google.com, edumazet@google.com, hdanton@sina.com, ivan.orlov0322@gmail.com, kernel@pengutronix.de, kuba@kernel.org, linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, linux@rempel-privat.de, mkl@pengutronix.de, mudongliangabcd@gmail.com, netdev@vger.kernel.org, nikolay@nvidia.com, o.rempel@pengutronix.de, pabeni@redhat.com, robin@protonic.nl, roopa@nvidia.com, skhan@linuxfoundation.org, socketcan@hartkopp.net, stephen@networkplumber.org, syzkaller-bugs@googlegroups.com, syzkaller@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Spam-Level: ** syzbot has bisected this issue to: commit 2030043e616cab40f510299f09b636285e0a3678 Author: Oleksij Rempel Date: Fri May 21 11:57:20 2021 +0000 can: j1939: fix Use-after-Free, hold skb ref while in use bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1438c947680000 start commit: 1b907d050735 Merge tag '6.7-rc-smb3-client-fixes-part2' of.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=1638c947680000 console output: https://syzkaller.appspot.com/x/log.txt?x=1238c947680000 kernel config: https://syzkaller.appspot.com/x/.config?x=88e7ba51eecd9cd6 dashboard link: https://syzkaller.appspot.com/bug?extid=1591462f226d9cbf0564 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17fea8fb680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1633dc70e80000 Reported-by: syzbot+1591462f226d9cbf0564@syzkaller.appspotmail.com Fixes: 2030043e616c ("can: j1939: fix Use-after-Free, hold skb ref while in use") For information about bisection process see: https://goo.gl/tpsmEJ#bisection