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 053CE171C2 for ; Sun, 7 Apr 2024 11:08:03 +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=1712488085; cv=none; b=iycGONLgKE4Bncu3B6Mz+s54Sy4nsz8+89tM3EiATKkNPqAORp5PQxA71sOzAZfp+zV+elB+8PXKNygLRTJHuLm19WW5xssS7HKmSCyU6XGcSwvhz0fMz88l6bczuvPoEwyvzOa6O/beNGR3FpF3Jr7zAWi2ng644Xt6kYGwhXY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712488085; c=relaxed/simple; bh=3p2A3mNtH5u0Qctglf7yCnGeYkAfugz/79M9/m8zzY4=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=DQcqsDIHFG1LgdWyVqvF1nMgKtT9uOFPfqWw4G5sweNiXtHh35tsGOBdFCbPYVi0udASc45zfpdw/ijS63jz03+TPVk0EXK6e3He2SmUKHuIntp7mve0eQ1K21fHEWIJJ2vZON8qPie9Sz9yVTvRQUxBGL+x2JBf6/J1ziSEgys= 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-7d5df223ae1so49119239f.0 for ; Sun, 07 Apr 2024 04:08:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712488083; x=1713092883; 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=rA4drQMgDKCfOP0rdP6fL+k233HpNLzBEAfubWbzETI=; b=dSLCQ5fjOLVeUsMMPRNFxVH6PSZzBLPtE04gs0hLiF55CcN5qr0fbZzRzKY+ORPdPs v5bFrMf5T42c+2l1thU3OziFReK2gMboYs4GO8LJl6IILLTnHd79A1VWS8uwkFlwFm1X JIohLLZ2PEgulDrvPArmF/62c6av4VndAE+qhPYoA8gQy6d/LXLIq7PGMihF3BODDtvH R6VqHrsbLACuqG9Bz3qxNJAnSWitI8jEs1Xg8eBRJv0oJqnPMrWEQk4FIpsT47pWWOSt pSRZq5wZDql6xRF9ENZtWFtsDlvGBBKzKdsEpymOM5CDNDrDduE3lyuPkpbx3pOuNJTM cAZg== X-Forwarded-Encrypted: i=1; AJvYcCWKfh05UIPksN56DT5XcHAPo9RrI/Uv7wwNQuAN8LvBOwznGCJcoLMM+Bkpu4y0XinDzK+BEXrvhMHN1zFlLGXCvcb7/xDrPqg/Z63A X-Gm-Message-State: AOJu0YyCT3Ur6qL3M/ZTEA+YU608qDw9f9+oPePEbIS+XXSOHW0CSTco +NeHP0VRQ+a8xCK6BuY24LzUiFeXNSEzrv5PrE/ZdwTxCWjlth0CNQZ9XKl6tGYYxnVVMM0Wpee JCBztXz9L9SE+7iZlVfw/9hvDvev/+5X7qyX3gYUdq5Gv5x9bB/834Ho= X-Google-Smtp-Source: AGHT+IGTGaCAwjbXmB7meL6B+f132kwK04l2L0PoPaNHadUBwAXhNPciiSPfjEESD3RkHmWb8J/zRsFNT01v+X/mC1nDJA5S4txC Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:1612:b0:482:801b:7216 with SMTP id x18-20020a056638161200b00482801b7216mr269225jas.4.1712488083183; Sun, 07 Apr 2024 04:08:03 -0700 (PDT) Date: Sun, 07 Apr 2024 04:08:03 -0700 In-Reply-To: <20240407103306.1364-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e16c0f06157fb3e9@google.com> Subject: Re: [syzbot] [net?] WARNING in cleanup_net (3) From: syzbot To: hdanton@sina.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in cleanup_net __do_sys_unshare kernel/fork.c:3393 [inline] __se_sys_unshare kernel/fork.c:3391 [inline] __x64_sys_unshare+0x38/0x40 kernel/fork.c:3391 do_syscall_64+0xfd/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1057 at lib/ref_tracker.c:179 ref_tracker_dir_exit+0x411/0x550 lib/ref_tracker.c:179 Modules linked in: CPU: 1 PID: 1057 Comm: kworker/u8:7 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: netns cleanup_net RIP: 0010:ref_tracker_dir_exit+0x411/0x550 lib/ref_tracker.c:179 Code: 48 8b 1c 24 48 89 df 48 8b 74 24 20 e8 08 e7 9f 06 eb 1a e8 f1 d1 b5 fc 48 8b 1c 24 48 89 df 48 8b 74 24 20 e8 f0 e6 9f 06 90 <0f> 0b 90 48 83 c3 44 48 89 df be 04 00 00 00 e8 5b 23 19 fd 48 89 RSP: 0018:ffffc90003c579e0 EFLAGS: 00010246 RAX: 75214a9c4e67f100 RBX: ffff88807a2b01d8 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: ffffffff8baac1e0 RDI: 0000000000000001 RBP: ffffc90003c57ab0 R08: ffffffff92ce55ef R09: 1ffffffff259cabd R10: dffffc0000000000 R11: fffffbfff259cabe R12: 1ffff1100fc58348 R13: dead000000000100 R14: ffff88807a2b0228 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f71ec36bfe4 CR3: 000000002dd64000 CR4: 0000000000350ef0 Call Trace: net_free net/core/net_namespace.c:462 [inline] cleanup_net+0xbf3/0xcc0 net/core/net_namespace.c:658 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa02/0x1770 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 Tested on: commit: fe46a7dd Merge tag 'sound-6.9-rc1' of git://git.kernel.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=16ad098d180000 kernel config: https://syzkaller.appspot.com/x/.config?x=fe78468a74fdc3b7 dashboard link: https://syzkaller.appspot.com/bug?extid=9ada62e1dc03fdc41982 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=165c53d3180000