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 E7526BE6C for ; Wed, 24 Apr 2024 02:01:03 +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=1713924065; cv=none; b=DsCt0ExQ8uSZzuW8dWqQ9q/gInVaPQEU9eAH3uUWQrQSsReeXg9DNVSaqaq+3ZHNWFHI6ra5uJeuTZCFAUL9+qUw3z0upFN0m76uPvtcRuGw3wHBSfXSx41QEQH42Vj+AXlGf1Eof+A2feeE056LigbvEIjYItv0VLB+1yQmNgs= 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=209.85.166.72 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-7d5f08fdba8so33990039f.0 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=UpuCdnBeD099i95/tT2uSONGTYse+IYbEaSwMpaJAXX2gbuI6FediMD0nyrmmKzVy4 j5HFwagDXFT7hWoxZqfGKvq0wWnCT10tRzncUABWF6z6Zlvi21HlT3swHxbVu4S6dhlA RJAvHm37uCCedfWKnlVNtq99Yl8Yjsvh25dBHGwh6RMkQooAZ30Xsw9oewUGOfpoV+tL yyAAa6MHq/MrP//TQlP1g8lz1goWMKVrGTrE1TP4nAICeK3MbJUlGCsqd43awbEX/8mh KeSQWkiPYhDrkNmVmdA8nLDuvkH6piN35a9vou/xsyAvqGA9HyjICwL4q/Lwd7JI4AHZ JwFQ== X-Forwarded-Encrypted: i=1; AJvYcCUgZDvAVbIFdH7Vs+QbLKwFdBXsZ3klqmlqz2cKkFSyKqGUEoIm44tVnMKHtdbUwo1k0mMwLwcB5qjI9Rr3r7vn7cc2pEPd X-Gm-Message-State: AOJu0Yw33njt8iHah9YTaAaFnxFGbWfH75ea943ZN//YKTYJjBoXPJWu /SOiblqO5SUVjU75L7pPqS7mzsn3bD0iBatv20yGRAeK5xMo2D5g3jS85ypJdv41Is/hr8zZUbf VDuQg89dugM7XX83od8XiUjgfSL55G1l/n/76VM9Z8EeV1y8wkZ3dTbQ= X-Google-Smtp-Source: AGHT+IFb2GitKyqtyomAW5D/rDPBgckqBsgxNNOhYgMZPpoxfwrLMRBdrlj7GvDWAclxs7KfwPhmIkStqRgo4TlEKYioi51ypkQv Precedence: bulk X-Mailing-List: netdev@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