From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f208.google.com (mail-il1-f208.google.com [209.85.166.208]) (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 9BEDB1F541E for ; Sun, 12 Oct 2025 21:35:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.208 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760304932; cv=none; b=Xltgji7ezydtX5VfcBWNVDV5rpxoyZonfjnHsHG8DJbEw+pPtV9la2xKfz7IWR9aY2vy5D+wJunq6spDWlYN5/SY/8UqaW2gusIGFhhCEcWatvTzjHOnc+0MvA7o86JOQDR/RjW9yKwCEFcr1zHNAqsNwD6cX9/3zQ1bPczyEJg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760304932; c=relaxed/simple; bh=n5f6K5I9qJtjZmu0wVLb6/9j12YuJnY3OkDnJyNabEI=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=FHcbwovaSbbT7xH8oGFiUyipWDyEK/OxuJb456xPrQSfNt1PLtp41gewjCWJFLzluYOU5lOe30mlyAt6aHsib2f9cdb+iBuw1DLVXk0chnzT5in0Uu7vbua6AS52OeTExKsVsWAhsprPKSWx/K7OJ29hnFpo9o9QsKcojyLvYkk= 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=209.85.166.208 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-f208.google.com with SMTP id e9e14a558f8ab-42a076e4f9eso129602415ab.1 for ; Sun, 12 Oct 2025 14:35:30 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1760304930; x=1760909730; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=DEb3jchtK4R0ZydGVnahMUZyWP+mwIRTiaWd4kcSJw8=; b=hkFIfvAd/e8YGEu8xHcG+LuDH9UzEAui3ZZRa6VcJaByKGpuYHn/EP9SfIMH6rgavm KW1EocEFfgDnwMMrHL8AgbmLVKKetUXD7R4ByxqKTYj3ooyzdaicWYkXdxmKHUZndUsk aoaU8Z9PkwcWi9VtmpX0j3bv1jLCsQajJcgjNye60n84ydh4poGgW1K9kQh4qj4HTK6A SCAua1ARNoWWBJSJOw/DpR65l4PhbIIYDwUqdT1A28tq2P55XAjG9T7m8ZCMXn9kEKhz HhthAOR88CeXlmspltXfm8BLUs2pqcoR6XlICUI8cwHPXC6YcZAlROBkx3WExJkVE4FJ SELw== X-Forwarded-Encrypted: i=1; AJvYcCVTwM4e1kUpKstm33EHF9xRVVoRiCrswW2f51mYScaZQyN2hOMG4MwhKUBAMap1xBugf/Nt3tw=@vger.kernel.org X-Gm-Message-State: AOJu0YyDzZ+j2hGbPN8SbxRtz9GooaI8IPZjMEqqpQAJh+byTwG9QmnP FIGLUfB4/c1vTsjTx72fht7Z0BGnLX7jVWWkMdmJ09+fuy/JaS3DJ7vP28mQ7Rr4GtPI6qQLcGQ 4jC6/3f2n19cddZ1cc5vb5zJ7jIdKIzP101aw+UOF+q8jTkptU0fu7+HJLSg= X-Google-Smtp-Source: AGHT+IGIBRV5LPjIhzSPju4tzqJl48jLymReZA+MjG7wIwLOGNYs1CTbyxa1ItYdv2q1bRiCR/Blby5WMSZZHlRUIe2btD7hi2Sf Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:216d:b0:42f:8eeb:499d with SMTP id e9e14a558f8ab-42f8eeb4a47mr144513605ab.8.1760304929709; Sun, 12 Oct 2025 14:35:29 -0700 (PDT) Date: Sun, 12 Oct 2025 14:35:29 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68ec1f21.050a0220.ac43.0010.GAE@google.com> Subject: [syzbot] [net?] WARNING in xfrm6_tunnel_net_exit (4) From: syzbot To: davem@davemloft.net, dsahern@kernel.org, edumazet@google.com, herbert@gondor.apana.org.au, horms@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, steffen.klassert@secunet.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 8765f467912f Merge tag 'irq_urgent_for_v6.18_rc1' of git:/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16eb5b34580000 kernel config: https://syzkaller.appspot.com/x/.config?x=9ad7b090a18654a7 dashboard link: https://syzkaller.appspot.com/bug?extid=3df59a64502c71cab3d5 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/afb0dad890ad/disk-8765f467.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/620faf492b85/vmlinux-8765f467.xz kernel image: https://storage.googleapis.com/syzbot-assets/7784fba6e17c/bzImage-8765f467.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+3df59a64502c71cab3d5@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 12 at net/ipv6/xfrm6_tunnel.c:341 xfrm6_tunnel_net_exit+0x7e/0x100 net/ipv6/xfrm6_tunnel.c:341 Modules linked in: CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Workqueue: netns cleanup_net RIP: 0010:xfrm6_tunnel_net_exit+0x7e/0x100 net/ipv6/xfrm6_tunnel.c:341 Code: 38 44 12 f8 4b 83 3c 2c 00 75 19 e8 0c 94 ac f7 49 81 fd f8 07 00 00 74 1d e8 fe 93 ac f7 49 83 c5 08 eb c9 e8 f3 93 ac f7 90 <0f> 0b 90 49 81 fd f8 07 00 00 75 e3 48 81 c3 00 08 00 00 45 31 f6 RSP: 0018:ffffc90000117890 EFLAGS: 00010293 RAX: ffffffff8a13affd RBX: ffff8880403b4000 RCX: ffff88801c2bdac0 RDX: 0000000000000000 RSI: ffffffff8d7e835a RDI: ffff8880403b40b8 RBP: ffffc90000117990 R08: ffffffff8f9e1177 R09: 1ffffffff1f3c22e R10: dffffc0000000000 R11: fffffbfff1f3c22f R12: ffff8880403b4000 R13: 00000000000000b8 R14: ffff88805ae1a480 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125d0c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c3845a0 CR3: 000000003cee6000 CR4: 00000000003526f0 Call Trace: ops_exit_list net/core/net_namespace.c:199 [inline] ops_undo_list+0x49a/0x990 net/core/net_namespace.c:252 cleanup_net+0x4d8/0x820 net/core/net_namespace.c:695 process_one_work kernel/workqueue.c:3263 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup