From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BD5A1C43381 for ; Tue, 19 Feb 2019 03:05:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 973072177E for ; Tue, 19 Feb 2019 03:05:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726260AbfBSDFE (ORCPT ); Mon, 18 Feb 2019 22:05:04 -0500 Received: from mail-it1-f199.google.com ([209.85.166.199]:36128 "EHLO mail-it1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725379AbfBSDFE (ORCPT ); Mon, 18 Feb 2019 22:05:04 -0500 Received: by mail-it1-f199.google.com with SMTP id i4so2172109itb.1 for ; Mon, 18 Feb 2019 19:05:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=M+mkyJ/hGQngn7YX1uDc8pbk4lHG23PAGDCXhbQHtUU=; b=Zd/PAecf/61eKc/hND2UQRpwL6vmEP+jbhm+vl334jqw0tX/c4Q0P8lzcg3HsowY7p tfYB7znEhnU4usvoE9pCV+DVJtAA4SxpGuBwwbd+PW/MNIjZtbcJ4dcpwrcLeeSAbAxb 4DZTGbFOReP/R1Ppx0oKQDMpVip8P3lYFWraXhWzT8f+AgAyfe9gI7voJgY+yyiFG3Nm TQklBJrubpSWWwNBoQlT3963OHbZMZ6dG7vst+UWSaFy17yi1MUJn9jG9a0QFWHKQyp4 vRxti+Ozh0OI1i/LY5qXtql1SjzTp1V8orHLUM9+peyK99HffPxrXHnuJh2/w2Q06zwx hT5g== X-Gm-Message-State: AHQUAuYRzz6sgZ03YIzrqilBvVN/pS2ulzfzbxjyX5+Vo5RjTZ0IBrDb 7Xp8ZwEgEF3bXMhE9lyK4iLn369o4CjSy9CNZIGpaDm04KSr X-Google-Smtp-Source: AHgI3IZ5Enc6Ujqe+3v1CWhH6vAIeRrXSVIB4QEfJGeGVNJx+YG5lnvzyNaUveaL6JeUIMj69NiB3zmhHurXOTkWFd23QC4aOkTx MIME-Version: 1.0 X-Received: by 2002:a24:4d8e:: with SMTP id l136mr1215448itb.5.1550545503344; Mon, 18 Feb 2019 19:05:03 -0800 (PST) Date: Mon, 18 Feb 2019 19:05:03 -0800 In-Reply-To: <000000000000c5745b0573d62311@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ef6010058236812f@google.com> Subject: Re: WARNING in xfrm_policy_fini From: syzbot To: davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has found a reproducer for the following crash on: HEAD commit: a3b22b9f11d9 Linux 5.0-rc7 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17e3d4d0c00000 kernel config: https://syzkaller.appspot.com/x/.config?x=7132344728e7ec3f dashboard link: https://syzkaller.appspot.com/bug?extid=9bce6db6c82f06b85d8b compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=177317a8c00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+9bce6db6c82f06b85d8b@syzkaller.appspotmail.com bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves cgroup: fork rejected by pids controller in /syz3 cgroup: fork rejected by pids controller in /syz2 WARNING: CPU: 1 PID: 31 at net/xfrm/xfrm_policy.c:3871 xfrm_policy_fini+0x30c/0x3a0 net/xfrm/xfrm_policy.c:3871 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 31 Comm: kworker/u4:2 Not tainted 5.0.0-rc7 #77 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2cb/0x65c kernel/panic.c:214 __warn.cold+0x20/0x45 kernel/panic.c:571 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 kobject: 'loop1' (00000000fd200829): kobject_uevent_env RIP: 0010:xfrm_policy_fini+0x30c/0x3a0 net/xfrm/xfrm_policy.c:3871 Code: c3 e8 b8 e9 72 fb 0f 0b e9 49 fe ff ff e8 ac e9 72 fb 0f 0b e9 cd fd ff ff e8 a0 e9 72 fb 0f 0b e9 00 ff ff ff e8 94 e9 72 fb <0f> 0b e9 62 fd ff ff e8 98 e8 a9 fb e9 7d fe ff ff 4c 89 ff e8 ab kobject: 'loop1' (00000000fd200829): fill_kobj_path: path = '/devices/virtual/block/loop1' RSP: 0018:ffff8880a9a8fbb0 EFLAGS: 00010293 RAX: ffff8880a9a82100 RBX: ffff88808e30dbf0 RCX: 1ffff1101535053e RDX: 0000000000000000 RSI: ffffffff85fcf7ec RDI: ffff8880a9a8297c RBP: ffff8880a9a8fbf0 R08: ffff8880a9a82100 R09: ffff8880a9a829f0 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808e30c080 R13: ffff8880a9a8fcc8 R14: ffffffff893d5eb8 R15: dffffc0000000000 xfrm_net_exit+0x1d/0x70 net/xfrm/xfrm_policy.c:3931 ops_exit_list.isra.0+0xb0/0x160 net/core/net_namespace.c:153 cleanup_net+0x3fb/0x960 net/core/net_namespace.c:551 kobject: 'loop1' (00000000fd200829): kobject_uevent_env kobject: 'loop1' (00000000fd200829): fill_kobj_path: path = '/devices/virtual/block/loop1' cgroup: fork rejected by pids controller in /syz1 process_one_work+0x98e/0x1790 kernel/workqueue.c:2173 worker_thread+0x98/0xe40 kernel/workqueue.c:2319 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..