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 DC1AD1FD1 for ; Wed, 25 Oct 2023 06:02:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from mail-oa1-f70.google.com (mail-oa1-f70.google.com [209.85.160.70]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 611C8A3 for ; Tue, 24 Oct 2023 23:02:32 -0700 (PDT) Received: by mail-oa1-f70.google.com with SMTP id 586e51a60fabf-1e103f22f74so6540621fac.1 for ; Tue, 24 Oct 2023 23:02:32 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698213751; x=1698818551; 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=Wii8E7zHSEDik3+/ZAl9Uy7hVmIz0evyew93pf3levg=; b=T6dsoDMKeQdCNmjlmBoKTOlp0QH5XOYtvjeR3cWLOH+ZfR+oEjZZRCmZdyG2t7q2O8 N16YkM/zt6JkTTb6vlFDx1i1X0jvz9wIRd4abmXDioCsPdHkI41Ky1uP2O8V4EvZBm3Y Yd/vVBJyybfQkhmpfbFZrUQoFC9wLp8c1E7Q70pM5t1QO7HfUOKW21F0fi75awGsRGzy KPjYrQoPxwWTjEifS4CcOtCkwor+GO8303w5E7phXmfosZMDvVv7mu54asrtYZMTKqYy zqEPRnHN7M+dKRM2Idg5qQVsNiIpgICvlBDKh75PvOx6k/JN7O20k79JB4V2Jk1ywZ4R uaDw== X-Gm-Message-State: AOJu0YzYrM2J0oVGoIgkcnDNkZnWp+7OiAQ2g3gxVuuqiS/C14jJMK7h PK/aQ4mTKZCfc5w7HfGL8EcLgVobF5YYkQqjWGN45WBLDCPi X-Google-Smtp-Source: AGHT+IHssJml8McZlRux6ZXt3VOeHacpOyLeRKgWH6j9CJmj9sveOQS0uWJF+F3U2CxWMMjmBub9b2Hx+0PMCfEE4WJkoUN7Sz2i Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6870:472c:b0:1e5:7978:9ce4 with SMTP id b44-20020a056870472c00b001e579789ce4mr6743294oaq.11.1698213751574; Tue, 24 Oct 2023 23:02:31 -0700 (PDT) Date: Tue, 24 Oct 2023 23:02:31 -0700 In-Reply-To: <000000000000e8364c05ceefa4cf@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006a55890608843368@google.com> Subject: Re: [syzbot] [can?] possible deadlock in j1939_session_activate From: syzbot To: 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, wg@grandegger.com Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit 259bdba27e32368b4404f69d613b1c1014c07cbf Author: Oliver Hartkopp Date: Wed Mar 9 12:04:16 2022 +0000 vxcan: enable local echo for sent CAN frames bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14a2e55d680000 start commit: 84186fcb834e Merge tag 'urgent/nolibc.2023.10.16a' of git:.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=16a2e55d680000 console output: https://syzkaller.appspot.com/x/log.txt?x=12a2e55d680000 kernel config: https://syzkaller.appspot.com/x/.config?x=7d1f30869bb78ec6 dashboard link: https://syzkaller.appspot.com/bug?extid=f32cbede7fd867ce0d56 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15c6300d680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17e6935d680000 Reported-by: syzbot+f32cbede7fd867ce0d56@syzkaller.appspotmail.com Fixes: 259bdba27e32 ("vxcan: enable local echo for sent CAN frames") For information about bisection process see: https://goo.gl/tpsmEJ#bisection