From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B3742DF44 for ; Fri, 15 Mar 2024 05:08:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710479287; cv=none; b=XuDcWJxNgx6idftW6cMtpv5txATWOrURbV2B6VjnbvPep9Djh7KxHpWfZRksM7lk1hr8bC351Z/sYaQ1VWDZuRlrq1SXbHIwBHO8GK/nyvMGYqx4KJzQ8ML09WDRpFjT9PpQNYRrPrOK+RlsROc7Q8zi8TAKZNk72v59cMKNJUo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710479287; c=relaxed/simple; bh=NmDOUG811XfRB16igaZyw6LFbv7sSn2UAdDeMDEa6OA=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=MYevh5Xa6rIMqeaNV3sXh95TsxY2/vTAZNSjp0f1wwpMZaDU609YHEgM+U4Fo59BJjXXtEAtk9eJYvZlAwuL2mm2qldhpTz/NxT2cx61dCS8QsHr2v4X/TuVFX/SwCrXUma0YK2v5m1KjgW+SYlcoo5dd1il4aWnVgCWRkQrdbo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f72.google.com with SMTP id ca18e2360f4ac-7c8a8526f03so145778039f.0 for ; Thu, 14 Mar 2024 22:08:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710479285; x=1711084085; 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=JVU3SwTinQlrbnvG3eYIW9m6xS2x5pbAtn9qvd7kqLU=; b=iaeXjD7LAb7OWFzzgwTi4AwsdqberdyJVIGsiMskpVKq5/ZR0YBaApN3kMKYPgp0YX hpR7QwUhgLVVsjMQBZyplPivVSRf+w7xneEKp3Zn646LWjjyixTkDiDHuNaIcbVabhgy 4avVxkbGDfgXtW8xe++XE5HqLtGT0zSMXpZoiVwaGZfKdKG+97p9FR3Ttt+pjw9OyBZ5 yLtzGlykJAaSeJ+eF0LbSpzEuXsPYRLTINpfiT8wVtlBs4+8IvlR6A6SSMrA3QzTfUo3 1zoLWLGHOCD2EwRJU9BQyBsKfk96Uce/G0Ztcdlbj8/DOrVA2qpU4cAGmdiKQSgzo3vv mL+w== X-Forwarded-Encrypted: i=1; AJvYcCXcg5JFU0Xq2J56aJ8LL/fKWmLDqrDrN6oVN15MxHXADJB1jox57MxE6C5X72H+eb56EzC/sPzNXe9eectvqj0xdasodfLsl0U4 X-Gm-Message-State: AOJu0YyJcWvtlmmb5hgh7rTZ+SJc5uXyhX9gDmHiqRzQWJzkdCfC+JHG XFhvxjAqOwK31ITMt3bKrmEUQ2qgFb0HH8hFfcyUQE8BJdQpdIUKqBXo3ngw1w4u0oM6D0iTXbq 2iOZZz13G7fVx3x0vDQ8KQABL2DYkYHjgWmiUQm4crEGlM/eByYr6r2U= X-Google-Smtp-Source: AGHT+IE4etLVdxE7NeSUJez8W2EAutCczB7gCGAguxf71D5ai0qlUnXy0kkyvk7dTFBA4qoM3k9rLzgTfGh9vvILeXfcxtJP6NXG Precedence: bulk X-Mailing-List: linux-can@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:218b:b0:365:38db:a585 with SMTP id j11-20020a056e02218b00b0036538dba585mr216452ila.1.1710479284985; Thu, 14 Mar 2024 22:08:04 -0700 (PDT) Date: Thu, 14 Mar 2024 22:08:04 -0700 In-Reply-To: <000000000000e8364c05ceefa4cf@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002d73880613abfe48@google.com> Subject: Re: [syzbot] [can?] possible deadlock in j1939_session_activate From: syzbot To: 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, o.rempel@pengutronix.de, pabeni@redhat.com, robin@protonic.nl, socketcan@hartkopp.net, syzkaller-bugs@googlegroups.com, wg@grandegger.com Content-Type: text/plain; charset="UTF-8" syzbot suspects this issue was fixed by commit: commit 6cdedc18ba7b9dacc36466e27e3267d201948c8d Author: Ziqi Zhao Date: Fri Jul 21 16:22:26 2023 +0000 can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10c1afc1180000 start commit: 296455ade1fd Merge tag 'char-misc-6.8-rc1' of git://git.ke.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=8e8eb82c088a8ac6 dashboard link: https://syzkaller.appspot.com/bug?extid=f32cbede7fd867ce0d56 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11d7b3afe80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16ba0a4fe80000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock For information about bisection process see: https://goo.gl/tpsmEJ#bisection