From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 DDFE1BE58 for ; Wed, 24 Apr 2024 02:01:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713924065; cv=none; b=TBsrs3OmoDu3YUSTmt7uwKbafo9fYtojXH1YBRqE/LxAIuHshSJxpLIZGwnlr5QE4DAmmDsG3TuBoVWDxRKQnRE3kdM7rYPnlrgnW29U8VjZCUWfU752ec19oqSIRqNJANGip7GPsou8c6Feum3hB0lYnAakF38XkRa87XBlI6g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713924065; c=relaxed/simple; bh=TUP9FkX2lJl7zbsImkQch4ciYMMyBDiJtF6VqMtpXM0=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=e31HwqgaVb6UhZATRDFBERXZMEOJjgMJs3KUerAQGcnS+VLzJZ6T+yoUynSewkKiu4JdyU2/+ESYV0/qyBPiaQyGu75JkXyGd+LVvmDRy3RCbhj/D3PQXag+LRR7wyRhoVMlDaqxxCl/2wG/PzlPD6OdSI1z16pwsdbDSv4lbYc= 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=209.85.166.200 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-il1-f200.google.com with SMTP id e9e14a558f8ab-36a1c2b7172so3693085ab.1 for ; Tue, 23 Apr 2024 19:01:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713924063; x=1714528863; 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=Ifim8rK+5Cn5AylRfbIwtbU4eq2GAjVjQaY82cuTstU=; b=W1aFxu0u/RzN/j1oG2NVjgWBudZRK9OmMYBdOAST8/MdVfj5WswM7307NO6XK+F+dU 817eZpsA9vORwG+1+9tzRszqMcVPAV33wPQTeGr5OnOV49kVo+PMAfqMIcTPsT7EL7UG BvfXRMBUFidqRhetKY7LViwr8KSu8hu41tmisR4yNenXm68966oUlYAsIe0bns2NDV+N v28ZpzVDmsy8Wgh5zqCDo7B5AudEDVmnadRYq7yuQtHPSwZIz9GEWikLBRxovgeyyhpp 5EPQrq28bVxPjYUm/NuhsgsHEzDNvNSu5O6qFatluW+0b9Oo0Bcec5/2z9WsdCBj1xvK u8jQ== X-Forwarded-Encrypted: i=1; AJvYcCW4ylvMzfT+50hor5eofI5lHQsP1lWSufAWMOCRWMsYSjYYg1jVjjY6e4fNMmVkVsGuxnc9HMRtJu+HPJxDqCZC2T3eD96osrejCdxi X-Gm-Message-State: AOJu0Yycl5ifuK9A2auPB7WA5F3A4aizFq229+N+P1CIV9BdRo8WTVOE aikAM0Mozy15eD4trK6iy/DdrYIYeCeWQ1x33aJSipmNxliL7qbGiY8RDb9xmSokKSKRS4VvhUj EO9mQrdJrR+moIkc+YEevy51krtpkRnopgYWSq3JZyY3rO1ei5sPkaxY= X-Google-Smtp-Source: AGHT+IFb2GitKyqtyomAW5D/rDPBgckqBsgxNNOhYgMZPpoxfwrLMRBdrlj7GvDWAclxs7KfwPhmIkStqRgo4TlEKYioi51ypkQv Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1cac:b0:36b:1b8b:75f4 with SMTP id x12-20020a056e021cac00b0036b1b8b75f4mr165809ill.2.1713924063116; Tue, 23 Apr 2024 19:01:03 -0700 (PDT) Date: Tue, 23 Apr 2024 19:01:03 -0700 In-Reply-To: <000000000000f1761a0616c5c629@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f450900616ce0aa5@google.com> Subject: Re: [syzbot] [net?] possible deadlock in __unix_gc From: syzbot To: axboe@kernel.dk, davem@davemloft.net, edumazet@google.com, hdanton@sina.com, horms@kernel.org, kuba@kernel.org, kuni1840@gmail.com, kuniyu@amazon.com, linux-kernel@vger.kernel.org, mhal@rbox.co, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit 47d8ac011fe1c9251070e1bd64cb10b48193ec51 Author: Michal Luczaj Date: Tue Apr 9 20:09:39 2024 +0000 af_unix: Fix garbage collector racing against connect() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13f440d3180000 start commit: 4d2008430ce8 Merge tag 'docs-6.9-fixes2' of git://git.lwn... git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=100c40d3180000 console output: https://syzkaller.appspot.com/x/log.txt?x=17f440d3180000 kernel config: https://syzkaller.appspot.com/x/.config?x=98d5a8e00ed1044a dashboard link: https://syzkaller.appspot.com/bug?extid=fa379358c28cc87cc307 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16a8fb4f180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17ceeb73180000 Reported-by: syzbot+fa379358c28cc87cc307@syzkaller.appspotmail.com Fixes: 47d8ac011fe1 ("af_unix: Fix garbage collector racing against connect()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection