From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 56D6C187C for ; Mon, 14 Aug 2023 03:32:49 +0000 (UTC) Received: from mail-pj1-f79.google.com (mail-pj1-f79.google.com [209.85.216.79]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1DB971BCB for ; Sun, 13 Aug 2023 20:32:48 -0700 (PDT) Received: by mail-pj1-f79.google.com with SMTP id 98e67ed59e1d1-26b3c15ffeeso2561090a91.0 for ; Sun, 13 Aug 2023 20:32:48 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691983967; x=1692588767; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=+cylwmDNW7JKQ6N6AHEkHm5tFBbzoC/Jb4px0DmBX8w=; b=B+FvC/Sy1BYm84pegOiMM8x7qEBED5KxJorXo1RDANREfWjmRDdua0JXH7Sr+KTBvh QNglARvZy2ZSL89P4MH0GD2U60ZTv96vKRhlRVESrPg19fL8Vv+hNeTdOjbTAefai2v1 V3V1UseSMXMpUcHgyxnIzgYf0krKWub9i4FttDPujvlwqMjrh4zdXa5NSfDUWjDDA2Y7 V58HMaPN7LWbIGMOZa6ABIo0csD56k36ub/jW+k/8w8d8mabNhcKEwlSQO2lIEQDVFIP LqvpryK9qdRfVmFzppcF8yujTGNKVcLMIoCqTGhgES9GznCGJvtJn56fwWZAGzebZB8G wymw== X-Gm-Message-State: AOJu0Yy91BxLjLuEi50rfofG9OUFRqNHzbYur1iqq+rD1fRyS1AdqTjc 9hEsFeX2uFboqu1+14NSrh+Wz80up9vq809+0hubQJZBUCIo X-Google-Smtp-Source: AGHT+IF3hEKWeg6Nn7BUbVcgrMEiMZ6b+TxzHlqPUoCaVcZRs5GQmTy9JjgReKIT1K/+An2otTENkaPYri5UqrjT6i5O1wrLSQoc Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a17:90a:9907:b0:269:3c79:9b15 with SMTP id b7-20020a17090a990700b002693c799b15mr1973060pjp.5.1691983967680; Sun, 13 Aug 2023 20:32:47 -0700 (PDT) Date: Sun, 13 Aug 2023 20:32:47 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000005bfece0602d9b7c8@google.com> Subject: [syzbot] [net?] WARNING in ip_tunnel_delete_nets (2) From: syzbot To: davem@davemloft.net, dsahern@kernel.org, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL,SORTED_RECIPS,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Hello, syzbot found the following issue on: HEAD commit: 2ccdd1b13c59 Linux 6.5-rc6 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16e56ef7a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=8fc59e2140295873 dashboard link: https://syzkaller.appspot.com/bug?extid=b7a5f4ad84b87ee1b3ae compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/e6e598627dd6/disk-2ccdd1b1.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/486c6739d779/vmlinux-2ccdd1b1.xz kernel image: https://storage.googleapis.com/syzbot-assets/5da0f3ac1d56/bzImage-2ccdd1b1.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b7a5f4ad84b87ee1b3ae@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 18960 at net/core/dev.c:10876 unregister_netdevice_many_notify+0x14d8/0x19a0 net/core/dev.c:10876 Modules linked in: CPU: 0 PID: 18960 Comm: kworker/u4:2 Not tainted 6.5.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Workqueue: netns cleanup_net RIP: 0010:unregister_netdevice_many_notify+0x14d8/0x19a0 net/core/dev.c:10876 Code: b4 1a 00 00 48 c7 c6 e0 0e 81 8b 48 c7 c7 20 0f 81 8b c6 05 11 62 6c 06 01 e8 44 21 23 f9 0f 0b e9 64 f7 ff ff e8 d8 5f 5c f9 <0f> 0b e9 3b f7 ff ff e8 cc 8f af f9 e9 fc ec ff ff 4c 89 e7 e8 1f RSP: 0018:ffffc900002cfa28 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 000000007cf48c01 RCX: 0000000000000000 RDX: ffff8880391ba080 RSI: ffffffff8828c0e8 RDI: 0000000000000001 RBP: ffff888077db4000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 000000000000004e R12: ffff88802380c900 R13: 0000000000000000 R14: 0000000000000002 R15: ffff88802380c900 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c001ac9010 CR3: 000000001ea93000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip_tunnel_delete_nets+0x2bb/0x3a0 net/ipv4/ip_tunnel.c:1144 ops_exit_list+0x125/0x170 net/core/net_namespace.c:175 cleanup_net+0x505/0xb20 net/core/net_namespace.c:614 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600 worker_thread+0x687/0x1110 kernel/workqueue.c:2751 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 --- 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 bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup